What is Tungsten and Tungsten alloy?

Tungsten was identified as a new element in 1781, and it was the first isolated as a metal in 1783.There are two important tungsten ores include wolframite and scheelite.Tungsten has the highest melting point of all the non-alloyed metals and the 2nd highest melting point of all the elements after carbon. Also tungsten metal has high density of 19.3 g/cc which is comparable to that of uranium and gold, and it is much higher about 2 times than that of lead.

Most of tungsten chemical compounds are Tungsten oxides and tungsten trioxides(WO3), tungsten oxides are always named tungsten intermediate products they are tungstic acid, ammonium paratungstate (APT, tungsten oxide content 88.5% );ammonium metatungstate (AMT), sodium tungstate,yellow tungsten oxide (YTO),blue tungsten oxide (BTO), tungsten trioxide (WO3), violet tungsten oxide (VTO). The other tungsten chemical compounds are most often used industrially as tungsten catalysts, there are tungstic anhydride,pure tungsten oxide, extra pure tungsten oxide (refined tungsten oxide) yellow-green tungsten oxide, Tungstic acid anhydride (Wolframic acid anhydrous, Wolframic acid anhydride), puratronic tungsten(vi) oxide,etc.

Tungsten metal it is also named pure tungsten, the unalloyed elemental form of tungsten is used mainly in electrical applications, for example, most notably in incandescent tungsten light bulb filaments, X-ray tubes (as both the tungsten filament and tungsten target), tungsten electrodes and also tungsten metal always used in tungsten steel.

All tungsten sintered products are made by the method of powder metallurgy (PM), tungsten powder is the most important raw materials and the starting point for tungsten mill products. Tungsten powder is made from tungsten oxide and by roasting and heating in a hydrogen atmosphere. Purity, Oxygen, grain size are very important for tungsten powder. With mixing other element powder,Tungsten powder can be made into a variety of tungsten alloy. Another important application of the tungsten powder is made of tungsten carbide powder which is major materials of madding tungsten carbide sintered products.

Tungsten metal has many different alloys which have numerous applications. Tungsten alloy always called super alloys, for the high density and nice TRS of tungsten alloy may used as military applications in penetrating projectiles, aircraft and helicopter jets’ parts, aircraft and helicopter breaking plates and shoes, and our tungsten alloy swaged rod with perfect physical properties can be used for bullets of antitank missiles and canons’ bullet, especially tungsten alloy cubes can be used for smart bomb (e.g. AHEAD); and other military applications. Also, tungsten alloy always used as tungsten alloy counterweight and tungsten alloy balance weight, the main application of tungsten alloys are as followings:

Philadelphia Carbide Company:Precision manufacturer of tungsten carbide, ceramic

We’re not your average machine shop. Where others leave off, we begin. Our specialty is manufacturing precision-ground wear parts, machine parts and dies for the most demanding industrial applications. We work primarily with tungsten carbide, silicon carbide and ceramic materials that have a proven ability to stand up under the stress of wear, corrosion, abrasion and shock.

Wear & Machine Replacement Parts

 

• Micronizing wear parts • Granulator blades • Pelletizer blades • Plungers • Pump Parts • Nozzles • Carbide tubing • Tube expanders • Can tooling • Pulverizing trim • Scrub plates • Cutoff knives • Gages • Valve seats • Core rods • Finished pins • Wire eyelets • Ashgates • Liner sleeves • Slitting knives• Cocoa hammers • Solid carbide augers • Carbide tooling for mixers/pulverizers and jet mills • Mandrels • Preforms • Can tooling • Knife gates • Carbide seats • Carbide check rings • Carbide guide rings (g rings) • Tool inserts • Pump plungers • End mills • Tipped tools • Blanks • Custom components

You may be especially interested in the following diverse products that we have been called on to manufacture for our industrial clients. The parts described here are not stock items, but have been custom-manufactured to client specifications. If you have a need for similar products– or, for that matter, any wear parts, machine parts or dies not shown here– we will be pleased to work with you to develop and produce a high-performance, precision part meeting or exceeding your most demanding specifications.

Tungsten carbide
Industrial Dies & Punches
Replacement parts for homogenizer/homogenization equipment
Cerbide™ machine & wear parts
Slitting blades for cigar manufacturing cellophane overwrap machines
Mixer pins for high viscosity material processing
Replacement plungers for water jet pumps
Threaded rods
Industrial guide rings
Industrial flow nozzles
Industrial spray nozzles
Tungsten carbide & ceramic tooling
Industrial replacement parts

Dies & Punches
• Complete forms • Draw dies • Punches • Rolls
• Die parts • Refractory tooling • Carbide mold tooling 

Extraordinary Challenges. Extraordinary Materials.

Ours is an unusual niche. We are generally called on to produce parts that will hold up under the stress of exceedingly harsh service conditions. Because of this, Philadelphia Carbide has tended to specialize in materials with  exceptional properties, such as tungsten carbide rods, ceramics and silicon carbide. Find out more about the benefits and properties of these extraordinary materials.

 

Solid Tungsten Carbide rods for end mill

 

carbide  rods with hole

1.With strict tolerance extent control

2.Enjoy excellent wear resistance & high toughness

3.Have very good thermal & chemical stability

4.Anti-deformation & deflection

5.A special Hot Isostatic Press (HIP) process provides quality improvement to the finished products to ensure meterial reliability.

Welcome your enquiries.

Also we can send you some samples for your testing.

 

 

Carbide rods with hole usage:
carbide rods used for making the drill bits/  end-mills / reamers .automobile special cutters, printed circuit board special cutters, engine special cutters, Horologe  processing special cutters, integral vertical milling cutter, graver and etc. Besides, they can be used for making of cemented carbide stamping head, Core bar and perforation tools

 

More informations about Tungsten Carbide Rods with Hole, please contact as following:

Relying on the advantages of Zhuzhou  Hard Alloy Production Bases, the company integrates the production, R&D, technical service and sale of hard alloy products, and is devoted to producing hard alloy products and developing hard alloy precision parts.

All of our tungsten Carbide Products are made from the high-purity Original/Virgin Raw Materials and HIP/Sintered, with very high quality and excellent performances. Also the price is very competitive. If you have any question for the payment,Please let us know.

The demand for cemented carbide rods is rising and the detection is facing dilemmas (Figure)

In recent years, the output of domestic cemented carbide bars has continued to increase, but as the demand continues to expand, the market is in short supply  , Its quality inspection requirements are also facing difficulties.At present, the domestic inspection of cemented carbide bars generally adopts manual methods, which consume a lot of manpower and the inspection results are unstable. Automatic inspection equipment is gradually being favored by the majority of manufacturers..

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According to relevant information, cemented carbide bars have a series of excellent properties such as high hardness, high wear resistance, high strength, bending resistance, and long tool life..Cemented carbide bars are blanks for making drills and tools, and currently mainly use powder extrusion molding technology.Nowadays, it is widely used in the production of drill bits, automotive tools, printed circuit board tools, engine tools, integral end mills, integral reamers, engraving knives, etc., as well as punches, mandrels, top and perforation tools.

With the rapid increase in market demand, ultra-fine grained cemented carbide bars have been more and more widely used.In the field of high-speed cutting, by carbide rods Due to the high standards of tool safety, reliability, and durability, the internal and surface quality requirements of solid carbide tools are also more stringent..With the continuous improvement of the internal quality of cemented carbide bars, especially ultra-fine cemented carbide materials, the quality of the surface of the overall cemented carbide tools has received more and more attention.

It is reported that a domestic company provides a large number of solid carbide tools (such as milling cutters, drills, engraving knives, gauges, plug gauges) with cemented carbide bars. There are a variety of materials to choose from, and the hardness can reach up to 94.5 (HRA) can process various difficult-to-process materials such as titanium alloy.At the same time provide a variety of hard alloy bars for punches and punches.It can be seen that the use of cemented carbide bars is quite extensive, and the market prospects are very impressive.Faced with the increasing demand for cemented carbide bars year by year, traditional inspection methods simply cannot achieve fast, accurate, and effective inspections. Therefore, many manufacturers are increasingly demanding automatic inspection equipment..

Recently, Beijing Lingbang Instrument Technology Co., Ltd. (hereinafter referred to as “Lingbang Instrument”) has developed a new type of automatic inspection equipment for cemented carbide bars, which detects the size and appearance of cemented carbide bars..For manufacturers of cemented carbide rods, this equipment changes the current manual inspection indicators that are subjective and poorly consistent with the product return problem, and at the same time solves the current situation of low manual inspection efficiency, thereby improving cemented carbide rods Product quality, improve inspection efficiency, enhance market competitiveness.

With the rapid increase in the output of cemented carbide bars, automatic inspection equipment is very useful.As a domestic supplier of customized testing equipment, Leading Instruments has strong innovative research and development capabilities. Currently, it is mainly engaged in the R&D and production of national defense, military, and civilian testing equipment.In recent years, the concept of customized testing advocated by Leading Instruments has been widely accepted by the manufacturing industry.It can be expected that in the next few years, non-standard customized automatic inspection equipment will inevitably replace the traditional backward inspection mode, thereby creating greater value for cemented carbide bar manufacturers.

Aluminum alloy bar manufacturer-manufacturer

Aluminum alloy rod manufacturer-manufacturer, the chemical composition of industrial aluminum alloy is aluminum-magnesium-silicon, and aluminum accounts for more than 95%. Magnesium and silicon are a small amount of alloy components, but the content of a few percent should not be underestimated. The addition of magnesium makes industrial aluminum alloys more resistant to corrosion, and corrosion resistance is an important factor in increasing service life.Silicon is the main element that increases the strength of industrial aluminum alloys.

 

Aluminum pipe, mainly used in the refrigeration system of 10 to -45 cold storage, is the evaporator used in all kinds of food freezing cold storage.The inlet and outlet parts of the aluminum pipe use high-frequency resistance welding copper-aluminum joints, the thickness of the aluminum pipe is 2mm without drop, and the pressure is 5Mpa.Aluminum exhaust refrigeration capacity, K value 10W/(m[average value], according to cold storage design specifications, Q=KAt, temperature difference t taken in the actual proportioning process t=10.Iron Fe0.35 chromium Cr0.10 Titanium Ti0.10 manganese Mn0.10 zinc Zn0.10 mg Mg0.450.9 Copper Cu0.10 silicon Si0.200.60 Aluminum Al remaining chemical composition editing The molten aluminum after casting is cooled and cast into various specifications of round casting rods through the deep well casting system under certain casting process conditions.

40 represents that the model is 40 series aluminum alloy, and also represents that the width of the aluminum alloy is 40mm. In the circular section aluminum alloy, it represents the arc radius.8 This type of aluminum alloy uses M8 bolts and T-nuts, and it is also the groove width code of the aluminum alloy.xx is usually defined by the manufacturer itself, usually the English abbreviation of the manufacturer’s name.The format of the specific model name of the 40 series aluminum alloy is xx-8-40xx, the specific meaning of each part.

Hoof and casters as shown in the figure. Other accessories Industrial aluminum alloy. Other accessories include hinge end cover, movable hook, flat seal groove strip, U-shaped groove strip handle and lifting eyes, etc..Hinge is used for active connection between profile and profile or profile and plate.The end cover is installed on the end face of the profile, which is both beautiful and safe.The movable hook can be inserted into the groove of the profile to slide back and forth.

 

There are three key points in the selection of industrial aluminum alloy..From these three aspects, it is easy to choose the profile specifications you want.Load-bearing plays a major role. Generally, when customizing the frame, the problem of load-bearing is considered more..Because it affects the stability of the overall framework.Different specifications represent different load-bearing, so you can’t go wrong as long as you choose according to the load-bearing.In addition to your own preferences, it is enough to choose national standard profiles and European standard profiles.The thing to remember is that the larger the load, the larger the specifications.Only let the aluminum alloy make the best use of it, use it within its own load-bearing range, and play its own value.Of course, the load-bearing capacity is not only affected by the specifications, but also by the frame structure, profile wall thickness and other factors.Different frame structure, profile load-bearing is also different.This requires a powerful manufacturer to design and select.This will help everyone meet their needs and save costs.

Aluminum alloy bar manufacturer-manufacturer, with mold design and development, aluminum extrusion production industrial frame and assembly line conveyor line equipment, development and installation of aluminum products deep processing and other non-standard industrial aluminum alloy products.After years of development, we have a complete aluminum alloy structure installation accessories.The design of various accessories is reasonable, which can greatly improve the assembly efficiency of the aluminum alloy frame and reduce the cost of customers. Various precision machining equipment.

 

Aluminum alloy bar manufacturer-manufacturer, Alcoa invented 2017 alloy in 1915 and 2024 alloy in 1933, which enabled the rapid expansion of aluminum applications in aircraft.In 1933, Alcoa invented 61 alloy, and then created the extruder quenching process, which significantly expanded the application range of extruded profiles.In 19, Alcoa invented the electrical aluminum alloy 10 and made it into a steel core aluminum stranded wire, creating a pioneer in high-voltage remote power transmission.

 

Aluminum pipe, mainly used in the refrigeration system of 10 to -45 cold storage, is the evaporator used in all kinds of food freezing cold storage.The inlet and outlet parts of the aluminum pipe use high-frequency resistance welding copper-aluminum joints, the thickness of the aluminum pipe is 2mm without drop, and the pressure is 5Mpa.Aluminum exhaust cooling capacity, K value 10W/(m[average value], according to cold storage design specifications, Q=KAt, the temperature difference t taken during the actual proportioning process t=1Tungsten Carbide Rods .Iron Fe0.35 chromium Cr0.10 Titanium Ti0.10 manganese Mn0.10 zinc Zn0.10 mg Mg0.450.9 Copper Cu0.10 silicon Si0.200.60 Aluminum Al remaining chemical composition editing The molten aluminum after casting is cooled and cast into various specifications of round casting rods through the deep well casting system under certain casting process conditions.

 

Aluminum pipe, mainly used in the refrigeration system of 10 to -45 cold storage, is the evaporator used in all kinds of food freezing cold storage.The inlet and outlet parts of the aluminum pipe use high-frequency resistance welding copper-aluminum joints, the thickness of the aluminum pipe is 2mm without drop, and the pressure is 5Mpa.Aluminum exhaust refrigeration capacity, K value 10W/(m[average value], according to cold storage design specifications, Q=KAt, temperature difference t taken in the actual proportioning process t=10.Iron Fe0.35 chromium Cr0.10 Titanium Ti0.10 manganese Mn0.10 zinc Zn0.10 mg Mg0.450.9 Copper Cu0.10 silicon Si0.200.60 Aluminum Al remaining chemical composition editing The molten aluminum after casting is cooled and cast into various specifications of round casting rods through the deep well casting system under certain casting process conditions.

Get the latest large-size bars

1.
Trial production of TC4 alloy 450 mm super large gauge bar through two forging schemes.Analyzed the differences in the structure, mechanical properties and clutter level of the bars produced by the two schemes.The results show that: the ingot is forged through the upsetting-drawing process and forging is carried out once, and then .
2.
Briefly introduces the development of large-size 0Cr15Ni5Cu2Ti steel bars for a large ring-rolled piece.The results show that the performance of the large-size 280mm bar produced by it can meet the standards of a large-scale ring-rolled part, indicating the production of the current large-size bar .
3.
Through experimental research, the main influencing factors of the mechanical properties of 6082T6 large-size bars are analyzed, and it is pointed out that the heat treatment process is the key factor affecting the mechanical properties of 6082T6 large-size bars. The main reason for the low mechanical properties of the bars is the heating and holding time in production. Do not . Tungsten Carbide Plates
4.
Introduced the process and equipment of full-tandem rolling to produce large-size bars, as well as the current product level, and discussed the direction of future technological transformation.
5.
Research on the microstructure and properties of large-size TC11 titanium alloy bars after double annealing.The results show that after the heat treatment of the TC11 alloy bar, the central part of the structure changes significantly due to the slow cooling rate..The organization does not match the performance .
6.
A multi-channel temperature controller is used to monitor the temperature changes of different parts of the material during the quenching process. Through the test and analysis of the material hardness and mechanical properties, the hardness and the hardness of the large-size 2D70 aluminum alloy bar at different distances from the edge are depicted. Changes in mechanical properties .
7.
Shougang adopted the SUFC process to trial-produce large-size (40mm) bars. In this paper, the deformation process parameters are determined through experiments, the CCT curve of the sample is measured, and the radial temperature field of the bar section is simulated, and the sample structure is analyzed..Industrial production shows that flexibility .
8.
The performance of 2A1 4 aluminum alloy large-size bars is unstable, and the tensile strength often fails to meet the national standard requirements in production.After a series of heat treatment process tests, the artificial aging system for 2A1 4-T6 alloy large-size bars has been determined.
9.
The effect of forging process on the microstructure, mechanical properties and flaw detection of TA12 titanium alloy large-size bars was studied..Studies have shown that the structure, mechanical properties and flaw detection of TA12 large-size bars produced by the upsetting process meet the XJ/BS5372-2007 standard .
10.
With the rapid development of my country’s aviation, aerospace, petroleum, chemical and other industries, the requirements for the quality of beryllium copper alloy processing materials are increasing. Ultrasonic flaw detection technology is increasingly important as the main quality control method of beryllium copper alloy processing materials..This article introduces the ultra-large beryllium copper alloy bar . 

Manufacturing method of aluminum strontium alloy production process

The invention belongs to the technical field of aluminum-strontium alloy production, and specifically relates to an aluminum-strontium alloy production process.

Background technique:

As the name suggests, aluminum-strontium alloy is an alloy whose main elements are metal aluminum and metal strontium.Aluminum-strontium alloy profiles include plates, bars, wires, etc..Among them, the production process of aluminum-strontium alloy wire usually includes batching, smelting, casting and extrusion..That is, select suitable elemental aluminum raw materials and elemental strontium raw materials, mix them according to requirements, and then smelt and cast them into aluminum-strontium alloy bars, and finally extrude the aluminum-strontium alloy bars into aluminum-strontium alloy wires.

In the existing production process, extrusion molding usually involves placing the heated and softened aluminum-strontium alloy bar in a bar containing cavity outside the forming die, as shown in Figure 1, the forming die (2) and the bar containing cavity ( 1) Both are straight cylindrical and coaxial. In order to avoid deformation of the aluminum-strontium alloy rod in the radial direction, the radial dimension of the rod-containing cavity (1) is the same as that of the aluminum-strontium alloy rod. The extrusion of the aluminum-strontium alloy bar by the extrusion head makes the aluminum-strontium alloy enter the forming die (2) for extrusion molding, in order to avoid the softened bar from the gap between the extrusion head and the bar containing cavity (1) Extrusion, the radial size of the extrusion head is the same as the radial size of the bar containing cavity (1).

During the extrusion molding operation, the extrusion head is against the end of the aluminum-strontium alloy bar away from the forming die (2), and pressure is applied to the aluminum-strontium alloy bar. The softened aluminum-strontium alloy bar undergoes axial deformation and gradually enters In the cavity of the forming die (2), and extruded from the other end of the forming cavity to form a smaller aluminum-strontium alloy wire.As the wire is extruded, the height of the bar is gradually reduced. When the height of the bar is reduced to a certain level, the extrusion head will press the remaining bar on the end of the forming die (2), and the remaining The lower bar cannot be squeezed into the forming die (2) for forming. Due to the restriction of the bar containing cavity (1), it cannot move outwards and is separated from the wire, and finally left in the extrusion head and forming die (2) In between, it is extruded into a block shape to form wire scrap.If the scrap is not cleaned, the molded wire cannot be demolded, and the scrap is cleaned, on the one hand, the extrusion molding cannot be continuously performed, and the efficiency of the extrusion molding is low. On the other hand, it is molded into a block When the waste material is recycled and reused, it needs to be reheated for smelting, which is troublesome..

Technical realization elements:

The present invention intends to provide an aluminum-strontium alloy production process to solve the technical problems that the existing production process cannot be continuously extruded and has low efficiency.

The aluminum-strontium alloy production process in this scheme includes batching, smelting, casting and extrusion molding, and is characterized in that the extrusion molding is:

Step 1) Set up a residual material cavity between the straight cylindrical molding die and the bar containing cavity. The shape of the residual material cavity is frustum shape, the bottom diameter of the frustum shape is 30mm, and the taper of the cone is 1/3. The remaining material cavity is coaxial with the forming mold, and the bottom surface of the remaining material cavity is close to the forming mold;

Step 2) Put the cast aluminum strontium bar into the remaining material cavity, and extrude the aluminum strontium bar, so that the aluminum strontium bar is extruded into a wire through a forming die, and the remaining height of the bar is 10 -20mm, put in the next bar and continue to squeeze.

The frustum shape refers to the remaining part of the cone after the tip is removed, the bottom surface of the frustum shape refers to the bottom surface of the cone, and the top of the frustum shape refers to the end of the cone opposite to the bottom surface.

The technical principles and technical effects of the aluminum-strontium alloy production process of this program are:

Put the aluminum-strontium alloy bar through the bar containing cavity from the top of the residual material cavity into the residual material cavity, and the extrusion head enters from the bar containing cavity to apply pressure to the aluminum strontium alloy bar, and the residual material cavity Under the action of the extrusion force, the bars in the squeeze into the molding die for extrusion molding.To be bar Tungsten Weight When the remaining height is 10-20mm, put in the next bar and continue to squeeze. Under the extrusion of the next bar, the previous bar continues to enter the molding die for extrusion molding. At the same time, because The bar located in the residual material cavity has a cavity left in the circumferential direction, and the bar will bulge and deform in the circumferential direction. In particular, the end of the previous bar located outside the forming mold will bulge outward and follow the residual material shape. The inner wall of the cavity moves in the direction of the rod accommodating cavity to wrap the next rod and squeeze the next softened rod radially inward, so that the two front and rear rods move in the radial direction. It will be fused together under double extrusion in the axial direction to realize continuous extrusion of the bar..With this extrusion method, the previous bar will not produce excess waste, and it will be extruded continuously with the next bar, thus saving the time for cleaning the excess waste and processing the excess waste..

In the prior art, in order to avoid the inconvenient extrusion of the bar material in the circumferential direction, or to avoid the bar material from being extruded from the feed end, the technicians will always think of using the feed end of the forming die to accommodate and transport aluminum. The size of the cavity of the strontium alloy bar is designed to be the same as that of the aluminum-strontium alloy bar, and the cavity that contains the bar is designed to be a simple straight cylinder. This is the most conventional choice for technicians according to the existing thinking. However, this The shortcoming brought by the design is the generation of excess waste. Even with reference to the technical means in this solution, when the remaining height of the bar is 10-20mm, the next bar is placed, and the two front and rear bars are only on the axis. It will not fuse together under the pressure of the direction. When the previous bar is squeezed to the end, the material on the inner side will enter the forming mold, but due to the small amount of material, it is inconvenient to form a complete wire, while the outer material Since it is not fused with the latter bar, the latter bar can drain it to the inside.Because of the intermolecular force, it will not flow to the inside. Due to the restriction of the inner wall of the bar containing cavity, it will not flow to the outside. Therefore, it can only stay between the next bar and the forming mold to form excess waste. , It affects the demoulding of the previous wire and the extrusion of the next wire. Therefore, after each bar is extruded, the excess waste must be cleaned up, resulting in low production efficiency and troublesome operation.

The following are the preferred solutions based on the above-mentioned basic solutions:

Preferred solution 1: In the step 1), the bottom diameter of the frustum shape is 30mm, the taper of the frustum shape is 1/3, and the height of the frustum shape is 30mm..

Preferred plan two: based on the basic plan or preferred plan one, in the step 2), when the remaining height of the bar is 15mm, put in the next bar to continue extrusion.

Preferred solution three: Based on preferred solution two, the smelting is:

Step 1) Heat the molten aluminum to 771-850��C;

Step 2) Press the strontium ingot into the molten aluminum with a special tool until the strontium ingot is completely melted. The special tool includes a support rod. The lower end of the support rod is provided with a pressure cover, and the wall of the pressure cover is distributed with multiple through holes.In the prior art, strontium ingots are usually directly poured into molten aluminum, and the density of strontium is 2.54*103kg/m3, The density of aluminum is 2.7*103kg/m3, Strontium will float upwards after being put into molten aluminum, contact with air, it will be burnt easily at high temperature.In this solution, a pressure cover is used to press the strontium ingot to the bottom of the molten aluminum. On the one hand, it can prevent the strontium ingot from floating upwards and contacting the air and burning. Easier to dissolve in molten aluminum.Moreover, the strontium ingot reacts violently during the process of melting. The pressure cover is used to press it into the aluminum liquid. Compared with the pressure applied by an independent pressure rod, the strontium ingot will not continuously float upwards. Need to repeatedly apply pressure.There are a number of through holes distributed on the wall of the pressure cover. The through holes can facilitate the circulation of liquid aluminum and liquid strontium and the transfer of heat to facilitate the rapid melting of strontium ingots.

Preferred Option Four: Based on Preferred Option Three, during the smelting process, nitrogen is introduced into the molten aluminum for refining.Nitrogen refining can remove the oxygen in the aluminum liquid, avoid the oxidation of metal aluminum and metal strontium, which affects the alloy performance, and can also avoid the burning loss caused by the presence of oxygen in the aluminum liquid.

Preferred solution five: Based on preferred solution four, the support rod is provided with an air passage communicating with the pressure hood, and nitrogen gas is introduced into the molten aluminum through the air passage.In this way, nitrogen can be introduced into the molten aluminum. At the same time, the nitrogen can be introduced into the pressure hood, which can agitate the liquid in the pressure hood, which facilitates the melting of strontium ingots, and facilitates the circulation of liquid and the transfer of heat.

Preferred solution 6: Based on preferred solution 3 or 4 or 5, during the smelting process, while pressing the strontium ingot into the molten aluminum, a special tool is used to stir the molten aluminum.In order to facilitate the mixing of metal aluminum and metal strontium, and reduce the additional stirring process, the use of special tools in the present invention can skillfully achieve multiple functions at the same time: 1. Press the strontium ingot into the aluminum liquid to avoid the strontium ingot. Burnout; 2. Pour nitrogen into the molten aluminum to refine the molten aluminum. At the same time, it can strengthen the circulation and heat transfer of the liquid and accelerate the melting of the strontium ingot; 3. Stir the liquid to facilitate the mixing of the two metals.

Description of the drawings

Fig. 1 is a schematic diagram of the structure of an extrusion molding die in the prior art;

Figure 2 is a schematic diagram of the structure of the extrusion molding die in the embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below through specific implementations:

Aluminum-strontium alloy production process, including four processes of batching, melting, casting and extrusion molding.among them:

Ingredients: select aluminum ingots and strontium ingots, weigh 100kg of strontium ingots and 1000kg of aluminum ingots in a ratio of 1:10, and mix.

Smelting:

Step 1) Put the aluminum ingot into the melting furnace and raise the temperature to melt the aluminum ingot into molten aluminum;

Step 2) Raise the temperature of the molten aluminum to 771-850C, and use special tools to press the strontium ingot into the molten aluminum. The special tools include a support rod. The lower end of the support rod is equipped with a pressure cover. The air passage connected by the hood, and the wall of the pressure hood is evenly distributed with multiple through holes.In the process of pressing the strontium ingot into the molten aluminum to melt the strontium ingot, use a special tool to stir the molten aluminum. At the same time, pass nitrogen into the molten aluminum through the air passage in the support rod for refining until the strontium ingot is completely melted.

Casting: The above-mentioned molten solution is slagged, and after standing for 5 minutes, it is cast into a cylindrical aluminum-strontium alloy bar to be extruded. The bar is 4kg/piece, the diameter of the bar is 20mm, and the height is 400mm; cooling with water.

Extrusion:

Step 1). As shown in Figure 2, a residual material cavity 2 is set between the straight cylindrical forming mold 3 and the bar containing cavity 1. The height of the forming mold 3 is 10mm and the diameter is 9.8mm; the shape of the residual material cavity 2 is frustum shape, the bottom diameter of the frustum shape is 30mm, the top diameter is 20mm, the taper of the cone is 1/3, the bottom surface of the residual material cavity 2 is close to the forming mold 3; the forming mold 3 The discharging end of the discharging end is provided with a discharging die 4, the discharging die 4 is frustum-shaped, the bottom diameter of the discharging die 4 is 20mm, and the top diameter is 9.8mm, the height of the output die 4 is 35mm.The bar containing cavity 1, the remaining material cavity 2, the forming mold 3, and the discharging mold 4 are coaxial, and the remaining material cavity 2, the forming mold 3, and the discharging mold 4 are integrally formed.

Step 2) Heat the aluminum-strontium alloy bar to 480-550 C, and put it into the residual material cavity 2 through the bar containing cavity 1, and use the extrusion head to resist the end of the aluminum-strontium alloy bar , Use a 600-ton extruder to extrude the aluminum-strontium alloy bar, so that the aluminum-strontium bar is extruded into a wire through the forming die 3. When the remaining height of the bar is 15mm, put in the next bar to continue extrusion , And so on, to achieve continuous extrusion of aluminum-strontium alloy wire.

Through many experimental observations, when the production process in the embodiment is used to produce aluminum-strontium alloy wire, the strontium ingot will not be burnt, and during the extrusion process, no excess waste will be produced, and there is no need to extrude each one. The bar will treat the leftover waste.

What grade of cemented carbide bar is suitable for cutting tools?

YG3X 14.6-15.2 1320 92 Suitable for high-speed finishing of small cutting sections of cast iron, non-ferrous metals and alloy quenched steel alloy steel. K01 YG3X YG6A 14.6-15.0 1370 91.5 Suitable for semi-finishing machining of hard cast iron, non-ferrous metals and their alloys, and also suitable for semi-finishing and finishing machining of high manganese steel, quenched steel and alloy steel. K05 YG6A YG6X 14.6-15.0 1420 91 It has been proved by production and use that this alloy can obtain good results in processing chilled alloy cast iron and heat-resistant alloy steel, and is also suitable for the finishing of ordinary cast iron. K10 YG6X YK15 14.2-14.6 2100 91 Suitable for processing solid alloy drilling, milling, reaming and other tools.Has high wear resistance and toughness. K15 K20 YK15 YG6 14.5-14.9 1380 89 Suitable for semi-finish machining with cast iron, non-ferrous metals and alloy non-metallic materials at moderate cutting speeds. K20 YG6 YG6X-1 14.6-15.0 1500 90 Suitable for fine turning during continuous cutting of cast iron, non-ferrous metals and their alloys and non-metallic materials, semi-finishing turning, fine turning, small section fine turning, rough threading, semi-finishing milling and fine milling of continuous section during discontinuous cutting Milling, rough expansion and fine expansion of holes. K20 YG6X-1 YG8N 14.5-14.8 2000 90 Suitable for high-speed cutting of cast iron, white cast iron, ductile iron, chromium, nickel stainless steel and other alloy materials. K30 YG8N YG8 14.5-14.9 1600 89.5 Suitable for rough turning, rough planing, rough milling in the processing of cast iron, non-ferrous metals and their alloys and non-metallic materials, uneven section and intermittent cutting, drilling and reaming of general and deep holes. K30 YG8 YG10X 14.3-14.7 2200 89.5 Suitable for manufacturing small diameter micro drills, end mills, rotary files, etc.. K35 YG10X YS2T 14.4-14.6 2200 91.5 It belongs to ultra-fine particle alloy, suitable for low-speed rough turning, milling of heat-resistant alloy and titanium alloy, especially as cutting cutter, tap, saw blade milling cutter. K30 YS2T YL10.1 14.9 1900 91.5 With good wear resistance and bending strength, it is mainly used to produce extruded bars, suitable for general drills, knives and other wear-resistant parts. K15-K25 YL10.1 YL10.2 14.5 2200 91.5 With good wear resistance and bending strength, it is mainly used to produce extruded bars, small-diameter micro-drills, cutting tools for watch processing, integral reamers and other cutting tools and wear-resistant parts. K25-K35 YL10.2 YG15 13.9-14.2 2100 87 Suitable for upsetting, piercing and stamping tools for steel rods and steel pipes under high compressibility and working under greater stress. YG15 YG20 13.4-13.7 2500 85 Suitable for making stamping dies, such as stamping watch parts, musical instrument springs, etc.; stamping dies for battery shells and toothpaste skins; stamping dies for small size steel balls, screws, nuts, etc.; pressing plates for hot-rolled twist drills. YG20 YG20C 13.4-13.7 2200 82 Suitable for making cold heading, cold punching and cold pressing molds for standard parts, bearings, tools and other industries; stamping molds for bullets against bullet shells. YG20C YT15 11.0-11.7 1150 91 Suitable for rough turning, semi-finish turning and finishing turning during continuous cutting in carbon steel and alloy steel processing, small-section finishing turning during intermittent cutting, semi-finishing milling and finishing milling of continuous surface, rough hole Expansion and refinement. P10 YT15 YT14 11.2-12.0 1270 90.5 Suitable for rough turning of uneven section and continuous cutting in the processing of carbon steel and alloy steel, semi-finish turning and fine turning of discontinuous cutting, rough milling of continuous section, expansion and rough expansion of casting holes. P20 YT14 YT5 12.5-13.2 1430 89.5 Suitable for rough turning, rough planing, semi-finishing planing, rough milling and drilling of discontinuous surfaces when processing uneven sections and intermittent cutting of carbon steel and alloy steel (including the skin of steel forgings, stampings and castings). P30 YT5 YS25 12.8-13.2 2000 91 Suitable for rough turning, milling and planing of carbon steel, cast steel, high manganese steel, high strength steel and alloy steel. P20, P40 YS25 YS3 carbide rods 0 12.45 1800 91 It is an ultra-fine particle alloy, suitable for high-efficiency milling of various steels with large passes, especially alloy steels.. P25 P30 YS30 YW1 12.6-13.5 1180 91.5 Suitable for processing difficult-to-process steel such as heat-resistant steel, high manganese steel, stainless steel, and ordinary steel and cast iron. M10 YW1 YW2 12.4-13.5 1350 90.5 Suitable for finishing and semi-finishing of heat-resistant steel, high manganese steel, stainless steel and high-grade alloy steel, etc..Processing of ordinary steel and cast iron. M20 YW2 YT15 11.0-11.7 1150 91 Applicable to carbon steel and alloy steel processing, rough turning, semi-finishing turning and finishing turning during continuous cutting, small-section finishing turning during discontinuous cutting, semi-finishing milling and finishing milling of continuous surfaces, roughing of holes Expansion and refinement. P10 YT14 11.2-12.0 1200 90.0 Suitable for rough turning of uneven section and continuous cutting in the processing of carbon steel alloy steel, semi-finish turning and fine turning during intermittent cutting, continuous section rough milling, and expansion and rough expansion of casting holes. P20 YT5 12.5-13.2 1400 89.5 Suitable for rough turning, rough planing, semi-finishing planing, rough milling and drilling of discontinuous surfaces when processing uneven sections and intermittent cutting of carbon steel and alloy steel (including the skin of steel forgings, stampings and castings). P30 YS30 12.45 1800 91.0 It is an ultra-fine particle alloy, suitable for high-efficiency milling of various steel materials, especially alloy steel.. P25 P30 YS25 12.8-13.2 2000 91.0 Suitable for carbon steel, cast steel, high manganese steel, highTungsten Carbide RodsRough turning, milling and planing of strength steel and alloy steel. M20, M30P20, P40 YS2T 14.4-14.6 2200 91.5 It is an ultra-fine particle alloy, suitable for low-speed rough turning, milling of heat-resistant alloys and titanium alloys, and is especially good for cutting cutters, taps, and saw blade milling cutters.. K30 M30 YW1 12.6-13.5 1200 91.5 Suitable for the processing of heat-resistant, high-manganese steel, stainless steel and other difficult-to-machine steels, as well as ordinary steel and cast iron. M10 YW2 12.4-13.5 1350 90.5 Suitable for finishing and finishing of special hard-to-machine steels such as heat-resistant steel, high manganese steel, stainless steel and high-grade alloy steel.Processing of ordinary steel and cast iron. M20 YW3 12.7-13.3 1300 92 Suitable for finishing and semi-finishing of alloy steel, high strength steel, low alloy and super strength steel.Can also be finished with low impact. M10 M20 YG6A 14.6-15.0 1400 91.5 Suitable for semi-finishing machining of hard cast iron, non-ferrous metals and their alloys, and also suitable for semi-finishing and finishing of high manganese steel, hardened steel, and alloy steel. K10 YG6X 14.6-15.0 1400 91 It has been proved by production and use that this alloy can obtain good results in processing chilled alloy cast iron and heat-resistant alloy steel, and is also suitable for the finishing of ordinary cast iron. K10 YG6 14.6-15.0 1450 89.5 Suitable for fine turning during continuous cutting of cast iron, non-ferrous metals and their alloys and non-metallic materials, semi-finishing turning, fine turning, small section fine turning, rough threading, semi-finishing milling and fine milling of continuous section during intermittent cutting, Rough expansion and fine expansion of holes. K20 YG8 14.5-14.9 1500 89 Suitable for rough turning, rough planing and rough milling of uneven section and intermittent cutting in the processing of cast iron, non-ferrous metals and their alloys and non-metallic materials, drilling and reaming of general and deep holes. K30 YK15 14.2-14.6 2100 91 Suitable for processing solid alloy drilling, milling, reaming and other tools.Has high wear resistance and toughness. K15 K20 YG15 13.9-14.2 2100 87 Suitable for upsetting, piercing and stamping tools for steel rods and steel pipes under high compressibility and working under greater stress. YG20 13.4-13.7 2500 85 Suitable for making stamping dies, such as stamping watch parts, musical instrument springs, etc.; stamping dies for battery shells and toothpaste skins; stamping dies for small size steel balls, screws, nuts, etc.; pressing plates for hot-rolled twist drills. YG20C 13.4-13.7 2200 82 Suitable for making cold heading, cold punching and cold pressing molds for standard parts, bearings, tools and other industries; stamping molds for bullets against bullet shells. YL10.1 14.9 1900 91.5 With good wear resistance and bending resistance, it is mainly used to produce extruded bars, suitable for general drills, knives and other wear-resistant parts. K12-K25 M10-M30 YL10.2 14.5 2200 91.5 It has good wear resistance and bending resistance. It is mainly used to produce extruded bars, small-diameter micro drills, cutting tools for watch processing, integral reamers and other cutting tools and wear-resistant zeros.