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Copper-Tungsten Alloy High Voltage Discharge Electrode
1. Application Of Copper-Tungsten Alloy High Voltage Discharge Electrode:
Copper-tungsten alloy high-voltage discharge electrodes are mainly used in:
1. Electrode material: It is applied to high hardness materials and flat sheet electrode discharge machining. The surface finish of electro-processed products is high, high precision, low loss, and effective saving.
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 welding nozzle, wireless resistance factory (production of carbon film resistance, metal coating resistance) resistance butt welding machine butt welding material (copper-tungsten alloy welding disc).
4. Guide material: various wire rolled steel, used for guiding and protecting materials.
2. Specification Of Copper-Tungsten Alloy High Voltage Discharge Electrode:
70W30Cu type:
70W30Cu type tungsten-copper alloy electrode is a composite material refined through static pressure molding, high-temperature sintering, and copper infiltration by utilizing the excellent metal properties of high-purity tungsten powder and the high conductivity and fluidity of copper powder with high purity.
75W25Cu type:
75W25Cu type tungsten-copper alloy electrode is a composite material of tungsten and copper, which has the excellent characteristics of copper's thermal performance and low expansion. 75%W tungsten-copper alloy electrode has the characteristics of high heat resistance, high thermal conductivity and low expansion, so 75%W tungsten-copper alloy electrode is often used in resistance welding, electrical contact and radiator.
80W20Cu type:
The tungsten content of the 80W20Cu type tungsten-copper alloy electrode is 80%, and the grade is expressed as CuW80. The hardness of CuW80 is about 98HRB, and the density is about 15.58g/cm3. The thermal expansion characteristics of tungsten copper composite materials are similar to those of silicon carbide, aluminum oxide and beryllium oxide, and are used for substrates and chips.
85W15Cu type:
The 85W15Cu type tungsten-copper alloy electrode is a two-phase structure pseudo-alloy mainly composed of tungsten and copper elements. Powder alloy technology for production.
3.Main properties of tungsten copper for electronic applications:
| Type | Density (g/cm3) | HB(MPa) | Conductivity (% IACS) |
| WCu10 | 16.8-17.2 | ≥2550 | > 27 |
| WCu20 | 15.2-15.6 | ≥2160 | > 34 |
| WCu25 | 14.5-15.0 | ≥1940 | > 38 |
| WCu30 | 13.8-14.4 | ≥1720 | > 42 |
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