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Copper Tungsten Sheet CuW Alloy Plate Metal Products
Copper Tungsten Sheet Copper-tungsten alloy combines the advantages of copper and tungsten, high strength / high specific gravity / high temperature resistance / arc ablation resistance / good electrical and thermal conductivity / good processing performance, tungsten copper alloy uses high-quality tungsten powder and oxygen-free copper powder, applications, etc. Static pressure forming-(high temperature sintering)-copper infiltration to ensure product purity and accurate proportioning, fine structure and excellent performance. The company’s copper tungsten is a domestic high-quality tungsten-copper alloy material, which is very suitable for high-hardness materials and thin electrode electrical discharge machining. The electrical processed products have high surface finish, high precision and low loss, which can effectively save electrode materials, increase electrical discharge processing speed and improve mold accuracy. . It can also be used as spot welding/butt welding electrode. Tungsten copper and die steel are welded together, which is very convenient in the use of electrodes.
Specifications of WCu Alloy :
Code No. | Chemical Composition % | Mechanical properties | ||||||
CU | Impurity | W | Density (g/cm3 ) | Hardness HB | RES( cm) | Conductivity IACS/ % | TRS/ Mpa | |
CuW(50) | 50±2.0 | 0.5 | Balance | 11.85 | 115 | 3.2 | 54 | |
CuW(55) | 45± 2.0 | 0.5 | Balance | 12.30 | 125 | 3.5 | 49 | |
CuW(60) | 40±2.0 | 0.5 | Balance | 12.75 | 140 | 3.7 | 47 | |
CuW(65) | 35±2.0 | 0.5 | Balance | 13.30 | 155 | 3.9 | 44 | |
CuW(70) | 30±2.0 | 0.5 | Balance | 13.80 | 175 | 4.1 | 42 | 790 |
CuW(75) | 25±2.0 | 0.5 | Balance | 14.50 | 195 | 4.5 | 38 | 885 |
CuW(80) | 20±2.0 | 0.5 | Balance | 15.15 | 220 | 5.0 | 34 | 980 |
CuW(85) | 15±2.0 | 0.5 | Balance | 15.90 | 240 | 5.7 | 30 | 1080 |
CuW(90) | 10±2.0 | 0.5 | Balance | 16.75 | 260 | 6.5 | 27 | 1160 |
Copper Tungsten Sheet are mainly used in:
1. Electrode material: used in high-hardness materials and
electro-discharge machining of pu-chip electrodes. The surface of
the electro-processed products has high surface finish, high
precision, low loss, and effective savings.
2. Contact materials: arc contacts and vacuum contacts of high and
medium voltage switches or circuit breakers, circuit board welding
and electrical contact points.
3. Welding materials: submerged arc welding machine, gas shielded
welding machine nozzle, radio resistance factory (production of
carbon film resistance, metal coating resistance) resistance butt
welding machine butt welding material (copper-tungsten alloy
welding disc).
4. Guiding and guarding materials: various wire-rolled steel, used
for guiding and protecting materials [1].
Electrical materials
Tungsten copper alloy electrical materials: mainly divided into
electrical contact materials and electrical processing materials.
(1) Electrical contact material. This is the most important type of
electrical materials. They have high arc ablation resistance and
fusion welding resistance. They are used as electrical contacts,
electrical contacts and electrodes in various high and low voltage
switch appliances and some meters. Electrical contacts are the most
widely used type of tungsten-copper materials, especially
tungsten-copper materials with a copper content of 20% to 40%. They
are mainly used for medium and high voltage and medium and high
current switching appliances. Such as the contact of the protection
circuit breaker of the transmission grid and other contacts and
contacts. Tungsten copper contacts containing 15% to 20% Cu can be
used on circuit breakers with voltages up to 500,000 V or higher.
(2) Electrical processing materials. Refers to electrode and die
materials used in resistance welding, electric riveting, electric
upsetting, and electric discharge machining technology. Electrical
discharge machining requires electrode or mold material to have
good electrical conductivity and arc ablation resistance to ensure
machining accuracy, so tungsten copper materials are mostly used.
Resistance welding also uses tungsten copper materials. Electric
riveting and electric upsetting also use tungsten copper materials
in some occasions.
Instantaneous high temperature material
Instantaneous high temperature material is an important and special
tungsten copper material. It can be used at temperatures close to
the melting point of tungsten and slightly above the melting point
of tungsten. The working time is very short, and the mission is
completed within a few seconds to 200 seconds, so it is called
instantaneous high temperature material. This type of material is
mainly used to manufacture high-temperature parts of spacecraft,
such as rocket nozzles, gas rudders that guide the flight direction
of missiles, missile ends (noseces, nose cones) and other
components. Ablation resistance and thermal shock resistance are
the most important performances of instantaneous high-temperature
materials, because the gas temperature of solid fuels is generally
as high as 2700~3300℃, and the gas stream contains a large number
of solid particles, which is very important for nozzles, gas
rudders and other components. Severe scouring and ablation; and
these parts are working under conditions of rapid temperature rise
(raising to working temperature in a few seconds), so intense
thermal shock damage to the parts is produced. As far as the tip is
concerned, when the aircraft flies into space and then enters the
atmosphere, it is subject to intense friction from the particle
cloud to produce high temperature and erosion due to its high
speed. Tungsten copper material is a better material that can meet
the above requirements.
With the successful development and development of carbon-carbon (C-C) fiber composite materials, because of its light weight and good thermal shock resistance, rocket nozzle throat linings are increasingly manufactured with it. However, its ablation resistance is far inferior to that of tungsten copper materials. For those nozzle throat linings, gas rudders and other components that require high ablation resistance, they still need to be made of tungsten-based materials.
Sunder material
Tungsten copper material can be used as a piercing material, which
is a so-called "medicine-type cover" material. A cup-shaped or
funnel-shaped cover is made of tungsten copper material (commonly
used W-30Cu material), and it is mounted upside down on the front
end of the ammunition cartridge. The temperature and pressure of
the gunpowder transform the cover into a jet to penetrate the
armor. This kind of medicine mask was first made of red copper and
used in a large amount. In order to increase the unit mass of the
cover and improve the armor-piercing ability, later developed a
tungsten guillotine medicine-type cover with a unit mass larger
than that of copper. Under ideal circumstances, its armor-piercing
ability is about 30% higher than that of the copper cover.