真空回火
Hardness and strength of the substrate of vacuum melting Ni based alloy-WC composite coating is low. After hardening and tempering, hardness and strength of the substrate was increased.
经过真空熔烧Ni基合金+WC复合涂层的45钢基体的硬度和强度都很低,为了提高基体的硬度,对涂层后的材料进行调质处理。
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