tungsten spot welding electrode for copper wire and copper sheet resistance welding
Tungsten electrode has high melting point. It has excellent proporites for high temperature strength, creep resistance, electron emission. Moreover, tungsten is low coefficient of expansion and the lowest metal vapor pressure. In generally, we adopt powder metallurgy to produce tungsten alloy.
HOSO tungsten electrode typical specification
| Pure tungsten (W) | Tungsten lanthanum (WLa) | Tungsten heavy alloy | Tungsen copper alloy | |
| W content (%wt.) | 99.95 | 98.0-99.0 | 90.0 | 80.0 |
| Density (g/cm3) | 19.3 | 18.9 | 17.1 | 15.3 |
| Hardness | 30 HRC | 28 HRC | 25 HRC | 98 HRB |
| Electrical conductivity (%IACS) | 30 | 25 | 5-10 | 40 |
| Thermal conductivity (W/m/K) | 160 | 150 | 120 | 220 |
| machining capability | - | + | ++ | +++ |
HOSO Metal design the electrode especially for the resistance welding. For more details refer to our tungstent electrode catalogue. Normally, Our tungsten electrode has two types:
1: pure tungsten electrode
2: tungsten-faced electrode, shank material copper, BeCu, or CuCrlZr.
| pure tungsten electrode | tungsten heavy alloy electrode | WLa electrode | copper join tungsten by back casting | copper tungsten composite electrode |
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Materials
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