Tungsten-rhenium wire surface is smooth, no glitches, uniform diameter.

Tungsten-Rhenium Wire Production Process

Preparation of raw materials - raw materials separation - mixing - reduction treatment - second mixing - Pressed Sintered - swaging, drawing processing - Finished

1 Raw material preparation: raw materials for the tungsten powder and ammonium perrhenate powder, tungsten powder particle size less than 4um, ammonium perrhenate size of less than 200um

2.Separating material: tungsten powder and powder of ammonium perrhenate were separated in the separator, so that agglomerated particles well dispersed

3. Mixing: The separation had separated ammonium tungsten powder and rhenium powder together into efficient mixer for mixing, mixing time 10-24 hours

4. Reduction treatment: mixed alloy powder under the protection of the hydrogen reduction treatment. Reduction treatment is divided into three phases:

First stage: reduction temperature 200-350 ° Time 1-2h
Second stage: reduction temperature 400-600 ° Time 1-2h
Third stage: the reduction temperature 700-900 ° Time 1-2h

The processing time for each stage according to the processing equipment conditions, furnace volume, loading capacity may be

5.Second Mixture
The restored again into high alloy powder were mixed mixer, mixing time 8-20h

6.Pressed Sintered
For the second time after mixing the alloy powder pressed into a billet, billet temperature of 1100-1300 ° now and hydrogen under the protection of pre-sintering time 0.4-1h, after the pre-sintered billet at a temperature of 2600-3000 ° and hydrogen under the protection of the final vertical melt sintering time 1-2h

7.Swaging, Drawing Processing
Sintered billet in rotary swaging machine for swaging processed into thin rods, thin rods made ​​in wire drawing machine pull tungsten rhenium alloy wire.


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Tungsten alloy warhead is adopted by SM-3, for its high density, high hardness and other properties. The RIM-161 Standard Missile 3 (SM-3) is a ship-based missile system used by the US Navy to intercept short- to intermediate-range ballistic missiles as a part of Aegis Ballistic Missile Defense System. Although primarily designed as an anti-ballistic missile missile, the SM-3 has also been employed in an anti-satellite capacity against a satellite at the lower end of low Earth orbit. The SM-3 is primarily used and tested by the United States Navy and also operated by the Japan Maritime Self-Defense Force.

The SM-3 evolved from the proven SM-2 Block IV design. The SM-3 uses the same booster and dual thrust rocket motor as the Block IV missile for the first and second stages and the same steering control section and midcourse missile guidance for maneuvering in the atmosphere. To support the extended range of an exo-atmospheric intercept, additional missile thrust is provided in a new third stage for the SM-3 missile, containing a dual pulse rocket motor for the early exo-atmospheric phase of flight.

Using tungsten alloy warhead, SM-3 can destroy aircraft, satellite and even ballistic missile.

Tungsten alloy hunting shot is adopted as shot of USAS-12 for its high density, high hardness and resistance to high temperature.The Daewoo Precision Industries USAS-12 (Universal Sports Automatic Shotgun 12 gauge) is an automatic shotgun designed as a combat shotgun manufactured in South Korea by Daewoo Precision Industries during the 1980s.

The USAS-12 is a gas-operated, selective-fire weapon which is designed to provide sustained firepower in close-combat scenarios. It accepts detachable 10-round box magazines or 20-round drum magazines. Both types of magazine are made of polymer, and drum magazines have their rear side made from translucent polymer for quick determination of the number of shot shells left. It has an effective range of 40m.

The latest version of the USAS-12 is capable of fully automatic fire.

Tungsten alloy hunting shot highly improves lethality of USAS-12 for its high density and high hardness.



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Tungsten alloy hunting shot is adopted as shot of Remington Model 870 for its high density, high hardness and resistance to high temperature. The Remington Model 870 is a U.S.-made pump-action shotgun manufactured by Remington Arms Company, LLC. It is widely used by the public for sport shooting, hunting, and self-defense. It is also commonly used by law enforcement and military organizations worldwide.

The Remington 870 was the fourth major design in a series of Remington pump shotguns. John Pedersen designed the fragile Remington Model 10 (and later the improved Remington Model 29). John Browning designed the Remington Model 17 (which was later adapted by Ithaca into the Ithaca 37), which served as the basis for the Remington 31. The Model 31 was well liked,[4] but struggled for sales in the shadow of the Winchester Model 12. Remington sought to correct that in 1949 by introducing a modern, streamlined, rugged, reliable, and relatively inexpensive shotgun – the 870. It was an adaptation of the Remington 11–48 autoloader, itself an adaptation of the John Browning-designed Remington 11.

Tungsten alloy hunting shot highly improves lethality of Remington Model 870 for its high density and high hardness.



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Tungsten alloy hunting shot is used as the shot of CAWS with its high density high hardness and resistance to high temperature. The Heckler & Koch HK CAWS (H&K CAWS) is a prototype automatic shotgun—designed as a combat shotgun—co-produced by Heckler & Koch and Winchester/Olin during the 1980s. It was Heckler & Koch's entry into the U.S military's Close Assault Weapon System program.

CAWS is a 10-round, 12-gauge, bullpup shotgun with two firing modes: semi-auto and full-auto. The gun is fully ambidextrous.

Tungsten alloy hunting shot can improve lethality of CAWS for its high density and high hardness.


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Tungsten alloy ball is small in volume but very dense, which means the product can be used in various fields requiring small but heavy parts. Tungsten alloy ball is used as the warhead of DF-21.

The Dong-Feng 21 (DF-21; NATO reporting name CSS-5-Dong-Feng Chinese: 东风; literally "East Wind") is a two-stage, solid-propellant, single-warhead medium-range ballistic missile (MRBM) in the Dong Feng series developed by China Changfeng Mechanics and Electronics Technology Academy. Development started in the late 1960s and was completed around 1985-86, but it was not deployed until 1991. It was developed from the submarine-launched JL-1 missile, and is China's first solid-fuel land-based missile. The U.S. Department of Defense in 2008 estimated that China had 60-80 missiles and 60 launchers.

Originally developed as a strategic weapon, the DF-21's later variants were designed for both nuclear and conventional missions. As well as a nuclear warhead of around 300 kt, it is thought that high explosive, submunition and chemical warheads are available. The latest DF-21D was said to be the world's first anti-ship ballistic missile (ASBM). The DF-21 has also been developed into a space-capable anti-satellite/anti-missile weapon carrier. DF-21 can destroy satellite or aircraft carrier.



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Tungsten alloy military sphere can be also used as bullets or pellets in military filed.

These are the pellets from inside a shotgun shell. Lead shot and bullets have been banned in many areas because they poison the environment. The main substitute materials are steel, bismuth and tungsten. The main advantages of tungsten alloy military sphere which made as pellet are that it's very dense, and very hard. The density allows the pellets to fly long distances without slowing down, while the hardness allows the pellets to keep their shape while being accelerated by the powder charge, which increases the muzzle velocity.

As well tungsten alloy military sphere is widely used in hand grenade, armor piercing projectile, prefabricated fragments.

Tungsten alloy military sphere is in small volume with high density, which means it could be used in some fields need the little but heavy parts, such as counterweights for military defense, projectiles in the missile weapons, armor piercing ammunition, hunting equipment, counterweights for hunting gun, prefabricated fragments, the missile weapons, armor piercing ammunitio,  tungsten alloy bullet.


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Back-relief angle and bearing geometry are the best key factors in achieving rapid die finishing and the best die performance. In particular for the smallest bores, drawing and exit cones must be perfectly co-axial in order to achieve an accurate final geometry. With Cemented Carbide, one can manufacture tools and drawing nibs for the full range of wire drawing applications as High-carbon wire, Steel cord for rubber reinforcement, Bead wire, Welding wire, Stainless steel wire, Spring wire, etc.
 

A long experience and commitment to research and development enables Sandvik to offer a range of carbide grades to meet the drawing requirements for all applications.

H3F contains 3% cobalt and has a true sub-micron WC grain size. It is the benchmark for leading edge wet drawing of tire cord wire. Sandvik continually develops new grades and materials in order to offer improved performance to the industry.

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Much of the equipment used in the Oil & Gas industry is subject to an aggressive environment that must not only resist erosion from high velocity fluids containing sand particles and other abrasive media, but it must also be resistant to corrosion damage. The combination of these two factors has caused this industry to migrate towards using more components that are made from Cemented Carbide. These components have natural properties that tend to resist such wear resistant mechanisms; however, Sandvik Hard Materials has dramatically improved the resistance to erosion and corrosion by focusing on the binder phase of grades used in this field. In order to improve the wear characteristics of the Cemented Carbide grades used specifically for choke valves in this industry, multi-binder (Ni, Cr, Mo, and Co) corrosion/erosion resistant materials were introduced.

Today, there are more than 100 choke control valves in service using these Cemented Carbide grades operating in subsea and other extreme environments. These materials have contributed to an improvement of up to 5 times service life when compared to conventional grades. Sandvik Hard Materials has now taken this performance increase to another level. Based on feedback gained from the field and the experiences of equipment design engineers working with these grades, Sandvik has carried out development work focused on improving material toughness and strength. Success has been achieved by carefully optimizing the relationship between wear (material hardness) and toughness for the multi-binder materials without any loss of resistance to corrosion or erosion.
 

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Extremely fine grain sizes for the smallest holes

The progressive miniaturization of printed circuit board design requires ever smaller cutting tools. In order to meet performance requirements in terms of wear resistance, rigidity and toughness.

Today the trend is miniaturization: digital cameras, laptops and mobile phones become smaller and should include more features. To be able to meet this demand the PCB manufacturers have to drill more and smaller holes (less than 0,1 mm) carbide components and carbide tools can develop spindles with increasing rpm, to facilitate the use of very small drills and to increase productivity.

The grades for the PCB drill blanks industry have been developed through an extensive research program which utilizes an entirely new patented Cemented Carbide processing technology. This new process ensures that the Tungsten Carbide (WC) grain size is maintained within narrow limits and that the Cobalt (Co) binder phase is distributed in such a way as to fully maximize strength and toughness at all hardness levels.

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