热处理后表面硬度HV560-750
栏目:钻尾螺丝 发布时间:2019-10-31 19:41
也可直接点“搜索资料”搜索整个问题   1.碳钢钻尾螺丝,1022A,标准热处理钢可做为钻尾螺丝生产使用材料,热处理后表面硬度HV560-750,心部硬度HV240-450.普通表面处理易生锈,硬度高,成本低   3.不锈钢钻尾螺丝,304,不可做热处理,防锈能力强,硬度低,成本高,只能钻铝板,木板,胶板   4.复合钻尾螺丝,钻头是用碳钢生产,螺纹和头部用304不锈钢相结合的工艺生产

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