CuW/QCu Solid Contact Materials
CuW/QCu Solid Contact Materials
|
|
Examine content |
CuW80 |
CuW70 |
CuW60 |
|
WCu part |
Rigidity（HB） |
≥220 |
≥175 |
≥140 |
|
Resistivity（uΩ﹒cm） |
≤5.0 |
≤4.1 |
≤3.7 |
|
Density（g/cm3） |
15.15 |
13.8 |
12.76 |
|
Ingredient (Cu wt%) |
20±2 |
30±2 |
40±2 |
|
Tensile strength（MPa） |
≥736 |
≥667 |
|
|
Junction part tensile strength |
Copper alloy≥216 MPa |
|
Conduct electricity
part |
Resistivity |
Copper alloy≤2.1 uΩ﹒cm |
|
Rigidity（HB） |
Copper alloy≥98 |
|
Ingredient（wt%） |
impurity≤0.5，additive≤1.2 |
It applies to self-elastic contactor component of high voltage SF6 circuit breakers. It has self-elasticity, don’t need spring at work. Its structure is simple, installation and usage is convenient, contactor volume is small, so it improves the switch-character of circuit breakers. We develop a type of WCu20/CuCr0.5 solid contact materials by upright integrated sinter vacuum infiltration method. It has good electric arc resistance, good elasticity and it is not easy to bend contactor finger.
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