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螺栓硬度規定 - 咖迷社區(CAXA彩神iv) - Powered by Discuz!


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標題: 螺栓硬度規定 [打印本頁]

作者: wodiqinlang    時間: 2016-9-3 15:45
標題: 螺栓硬度規定
M8的螺栓。材質45鋼調質處理,調質硬度20-30HRC,通過金相砂輪片剖開螺紋部分、檢查其心部硬度,會導致硬度降低嗎?




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