13361| 60
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軸承箱主軸斷裂,請大家看看是否經(jīng)過調(diào)質(zhì)處理? |
評分
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點評
還有更好的材料啊。比如錳鋼系列,60si2Mn,55CrSi,
45鋼和40Cr性能上沒有本質(zhì)的差別。
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