機床床身鑄件為什麼需要回火處理：gangtieshijixiegongyezhongyingyongguangdecailiao，gangtiexianweizuzhifuza
，keyitongguorechuliyuyikongzhi，suoyigangtiederechulishijinshurechulidezhuyaoneirong。weishihejichuangzhujianyousuoxuyaodelixuexingneng
、物理性能和化學性能
，除合理選用材料和各種成形工藝外，熱處理工藝是必不可少的。另外，鋁
、銅、鎂
、鈦等及其合金也都可以通過熱處理改變其力學、wulihehuaxuexingneng，yihuodebutongdeshiyongxingneng。zhengtirechulishiduizhutiepingban
，zhutiewanbanhuojichuangchuangshenzhujianjinxingzhengtijiare，ranhouyishidangdesudulengque，yigaibianzhutiepingtai，pingban
，zhutiewanbanhuojichuangchuangshenzhujiandezhengtilixuexingnengdejinshurechuligongyi。

機ji床chuang鑄zhu件jian的de熱re處chu理li是shi機ji械xie製zhi造zao中zhong的de重zhong要yao工gong藝yi環huan節jie，與yu其qi它ta加jia工gong工gong藝yi相xiang比bi，熱re處chu理li一yi般ban不bu改gai變bian工gong件jian的de形xing狀zhuang和he整zheng體ti的de化hua學xue成cheng分fen，而er是shi通tong過guo改gai變bian工gong件jian內nei部bu的de顯xian微wei組zu織zhi

，或huo改gai變bian鑄zhu鐵tie平ping台tai和he機ji床chuang鑄zhu件jian表biao麵mian的de化hua學xue成cheng分fen，賦fu予yu或huo改gai善shan工gong件jian的de使shi用yong性xing能neng。其qi特te點dian是shi改gai善shan鑄zhu鐵tie平ping台tai和he機ji床chuang床chuang身shen鑄zhu件jian的de內nei在zai質zhi量liang。 機ji床chuang床chuang身shen鑄zhu件jian產chan品pin作zuo為wei一yi種zhong大da型xing鑄zhu件jian必bi須xu要yao經jing過guo時shi效xiao處chu理li才cai能neng提ti高gao本ben身shen的de使shi用yong性xing能neng，改gai善shan床chuang身shen鑄zhu件jian的de內nei在zai質zhi量liang。機ji床chuang床chuang身shen鑄zhu件jian，床chuang身shen立li柱zhu，機ji床chuang工gong作zuo台tai等deng鑄zhu件jian整zheng體ti熱re處chu理li大da致zhi有you退tui火huo、正火、淬cui火huo和he回hui火huo四si種zhong基ji本ben工gong藝yi。機ji床chuang床chuang身shen鑄zhu件jian回hui火huo時shi應ying嚴yan格ge遵zun守shou回hui火huo工gong藝yi，筋jin板ban密mi集ji或huo易yi變bian形xing部bu位wei應ying加jia支zhi撐cheng筋jin，防fang止zhi應ying回hui火huo溫wen度du導dao致zhi變bian形xing和he斷duan裂lie。應ying有you專zhuan人ren看kan管guan回hui火huo爐lu溫wen度du計ji，及ji時shi控kong製zhi溫wen度du，防fang止zhi溫wen度du過guo高gao或huo過guo低di，這zhe樣yang會hui對dui回hui火huo工gong件jian有you很hen大da的de影ying響xiang。