20 # steel products for the matrix, inner hole covered with a
special wear-resistant copper alloy material, the surface of copper
alloy can be processed into fuel tank rules to enhance lubrication
performance. The product of alternative sets of thick-walled
bronze, can greatly reduce the production costs. At the same time
with a small friction coefficient, good wear resistance, high
dimensional accuracy, impact resistance, high temperature
resistance characteristics. Mainly used for building mechanical
sliding parts, fuel tank-oriented high-precision stamping parts and
mold, automotive mold coverage, such as frequent job introduction
sets the reciprocating motion. |
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