日本在高清AV不卡

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1.2738模具鋼概述

      1.2738模具鋼是預硬塑膠模具鋼,采用先進的模具鋼精煉技術, 為真空熔煉的Cr-Ni-Mo合金鋼。這種鋼有著良好的拋光性、光蝕刻花性、可加工型和耐磨性;大型模具不需要熱處理,因為它沒有無淬裂和熱處理變形風險;模具在淬火前一定要軟化退火,淬火后也要及時回火,慢慢加熱?;鼗鸷蟮哪>邔嵭心ハ骷庸r要注意冷卻,磨削和加工,不然表面就會軟化,產生磨削裂紋。
德國撒斯特1.2738模具鋼
      這種鋼預硬鋼材具有著優良的拋光性,一般會用氧化鋁/石膏拋光。那又該怎么拋光呢?起先我們先是粗拋,然后愈來愈細的磨料拋光,注意每換一次磨料拋光,它的方向都要改變,而且最后那道拋光的時間不要太長,不然就會影響模具表面的粗糙程度。氮化能增加表面的硬度,增強其的耐磨性和耐蝕性。雖然1.2738模具鋼已經過預硬化處理,但是還是可以使用熱處理提高硬度。
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日本在高清AV不卡
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