Tungsten Copper Rod

 Tungsten copper alloy (W-Cu) is the composite of tungsten and copper which own it excellent performance of tungsten and copper. It is used widely in such industries as engine, electric power, electron, metallurgy, spaceflight and aviation.
Tungsten copper rod is a combination of tungsten and copper.
The manufacturing process is as follows: press the refractory metal, sinter the pressed compact at a high temperature, and infiltrate it with copper. All this is done under very closely controlled conditions. The result is a relatively hard material with superior arc and wear resistance, high physical Properties: at elevated temperatures, and good  electrical and thermal conductivity.

Copper Tungsten Alloy Refractory Metal Composites

Eagle refractory metal composite materials are a combination of tungsten or tungsten carbide combined with copper or silver. The manufacturing process is to press the refractory (tungsten or tungsten carbide), sinter the pressed compact at a high temperature, and infiltrate with copper or silver. All this is done under very closely controlled conditions. The result is a relatively hard materials with superior arc and wear resistance, high physical properties at elevated temperatures, and good electrical and thermal conductivity.

Tungsten Copper Military Shaped Charge Liner

Tungsten copper military shaped charge liner is part of armor-piercing projectile which plays an important role in action. Commonly used shaped charge liner is taper angle form. Generally, cone angle is ranging from 120 to 160 degrees.

Armor-piercing projectile rely on kinetic energy of the projectile to penetrate armor and destroy the target. Armor-piercing projectile are high velocity, long shooting distance and high precision of shooting, is the main ammunition of tank guns and the anti-tank guns. It also used in naval gun, coastal gun , anti-aircraft artillery and airborne cannon and used for mutilating tanks, self-propelled guns, armored vehicles, ships, aircraft, etc.

The theory of tungsten copper military shaped charge liner is called cavity effect .When the armor-piercing projectile detonates, the high temperature and high pressure instantaniously melting shaped charge ,then forming high temperature and speed metal jet which can sear even burnthrough the armored steel. So it is show that armor-piercing projectile take effective action by the cavity effect rather than rely on the kinetic energy.

Armor-piercing projectile’s armor ability is different when adopting different material of shaped charge. Copper used as material for shaped charge liner with low melting point and good ductility, however the density of copper is low and easily deformation, so it commonly mixed with tungsten to improve the density, which increase the armor ability of tungsten copper military shaped charge liner.

Tungsten Copper Military Alloy

There are many methods making tungsten copper military alloy.
Traditionally, tungsten copper military alloy making commonly adopt copper permeability and liquid sintering technique. However as tungsten and copper indissolve each other and the sintering sex also poorer, it is difficult to implement fully sintering to optimize dense and form the uniform microstructure, and also hard to flexible adjustment of composition of copper tungsten. The followings are the commonly.

Infiltration Method
Infiltration method is that firstly prepare fixed density and strength of porous tungsten substrate skeleton, than infiltrate low melting point mental copper into the tungsten skeleton.

The mechanism of infiltration method is when the liquid copper wetting tungsten porous substrate, under capillary pressure, the liquid copper flow long with the particle’s porous skeleton and padding the porous skeleton, resulting in comprehensive good materials.

The merits of tungsten copper military alloy made from this method are high density, good sintering performance, good thermal and electricity conductivity. However, this tungsten copper military alloy needs further machining, which increase the machining cost, reduce the yield.
High temperature liquid sintering method

As there is a huge distance between the tungsten and copper of the melting point, so we can adopt high temperature liquid sintering method to make tungsten copper military alloy, through which densificate its density at the temperature higher than copper melting point.

This method’s advantage is that the processing is simple and easily control, while high sintering temperature, long sintering time and low sintering density which make the finished products can not meet the requirements of usage. In order to improve the density, repress, hot –press and hot forging after liquid sintering.

Arc melting method
Arc melting method is making into electrode with the copper tungsten, then melting in the arc furnace, so tiny grain, low density ,high densify and good corrosion resistance tungsten copper military alloy come out.

Copper tungsten PCD disk erosion electrode

Our copper tungsten rotary electrode has high physical and mechanical properties to answer the PCD tools disk erosion need. We put lots of effort research and optimize our process to develop quality product for this application. Our copper tungsten alloys are designated as ASTM B702, RWMA Class 10, RWMA Class 11, RWMA Class 12, GB/T8320-2003.

Copper tungsten electrode for EDM PCD tools disk erosion has below advantage:
-High electrical conductivity and regular component maintain electrical plus generator stable.
-High thermal conductivity guarantee PCD without damage by heat.
-High density make sure PCD insert surface has the lowest roughness.

Copper tungsten Bi-Metal Alloy plate

Our copper tungsten bimetal product is created for EDM electrode and electrical contact rivet. Copper tungsten bi-metal plate is made by diffusing bonding technology. it is very reliable and cost saving solution can be quickly replaced  without machine break down. Multiple electrode assembly bring the high efficiency of operation.

EDM copper tungsten bimetal electrode bond the copper tungsten and iron metal, iron side magnetic adsorption on the base working plate, and copper tungsten side maintain the good wearing to machining the precision mould working piece.

Copper tungsten thread tapping electrode

Copper tungsten thread tapping use for EDMing due to it unmatched wear resistance, together with very well in sharp corner and machined without burr issues associated with copper. Our copper tungsten alloy is made by PSI(press-sinter- infiltration) process which bring higher quality than the conventional PS(Mix.-press-sinter) process to virtually eliminates the alloy porosity issue.

Our Copper tungsten thread tapping has below advantage:
• Maturity press- sinter- infiltration process without porosity issue.
• High electrical conductivity get rapid cutting speed.
• Different tungsten ratio product available depend on the demanding.