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42CrMo无缝钢管的调质处理

文章出处:http://bagsbig.com 发表时间:2017/6/9 8:48:34 点击:1

42CrMo无缝钢管的调质处理

 

    Cr能增加钢的淬透性,提高钢的强度和回火稳定性,具有优良的机械性能。截面尺寸大或重要的调质42CrMo无缝钢管捕鱼游戏网页版,应采用Cr钢。但Cr钢有第二类回火脆性。

    42CrMo无缝钢管捕鱼游戏网页版调质的淬回火,各种参数工艺卡片都有规定,我们在实际操作中体会是:

捕鱼游戏网页版    (YI)42CrMoWUFENGGANGGUANCUIHUOHOUYINGCAIYONGYOULENG,40CrGANGDECUITOUXINGJIAOHAO,ZAIYOUZHONGLENGQUENENGCUIYING,ERQIE42CrMoWUFENGGANGGUANDEBIANXING、KAILIEQINGXIANGXIAO。DANSHIXIAOXINGQIYEZAIGONGYOUJINZHANGDEQINGKUANGXIA,DUIXINGZHUANGBUFUZADE42CrMoWUFENGGANGGUAN,KEYIZAISHUIZHONGCUIHUO,BINGWEIFAXIANKAILIE,ZHISHICAOZUOZHEYAOPINGJINGYANYANGEZHANGWORUSHUI、CHUSHUIDEWENDU。

    (二)42CrMo无缝钢管捕鱼游戏网页版 调质后硬度仍然偏高,第二次回火温度就要增加20~50℃,不然,硬度降低困难。

    (SAN)42CrMoWUFENGGANGGUANGAOWENHUIHUOHOU,XINGZHUANGFUZADEZAIYOUZHONGLENGQUE,JIANDANDEZAISHUIZHONGLENGQUE,MUDESHIBIMIANDIERLEIHUIHUOCUIXINGDEYINGXIANG。HUIHUOKUAILENGHOUDE42CrMoWUFENGGANGGUAN,BIYAOSHIZAISHIYIXIAOCHUYINGLICHULI。

 

捕鱼游戏网页版YINGXIANGDIAOZHI42CrMoWUFENGGANGGUANDEZHILIANG,CAOZUOGONGDESHUIPINGSHIGEZHONGYAOYINSU,TONGSHI,HAIYOUSHEBEI、CAILIAOHEDIAOZHIQIANJIAGONGDENGDUOFANGMIANDEYUANYIN,WOMENRENWEI:

     (一)42CrMo无缝钢管从加热炉转移到冷却槽速度缓慢,42CrMo无缝钢管入水的温度已降到低于Ar3临界点,产生部分分解,42CrMo无缝钢管 得到不完全淬火组织,达不到硬度要求。所以小零件冷却液要讲究速度,大42CrMo无缝钢管予冷要掌握时间。

     (ER)42CrMoWUFENGGANGGUANZHUANGLULIANGYAOHELI,YI1~2CENGWEIYI,42CrMoWUFENGGANGGUANXIANGHUZHONGDIEZAOCHENGJIAREBUJUNYUN,DAOZHIYINGDUBUYUN。

     (SAN)42CrMoWUFENGGANGGUANRUSHUIPAILIEYINGBAOCHIYIDINGJULI,GUOMISHI42CrMoWUFENGGANGGUANJINCHUZHENGQIMOPOLIESHOUZU,ZAOCHENG42CrMoWUFENGGANGGUANJIEJINMIANYINGDUPIANDI。

     (四)开炉淬火,不能一口气淬完,应视炉温下降程度,中途闭炉重新升温,以便前后42CrMo无缝钢管淬后硬度一致。

捕鱼游戏网页版     (WU)YAOZHUYILENGQUEYEDEWENDU,10%YANSHUIDEWENDURUGAOYU60℃,BUNENGSHIYONG。LENGQUEYEBUNENGYOUYOUWU、NIJIANGDENGZAZHI,BURAN,HUICHUXIANYINGDUBUZUHUOBUJUNYUNXIANXIANG。

     (LIU)WEIJINGJIAGONGMAOPIDIAOZHI,YINGDUBUHUIJUNYUN,RUYAODEDAOHAODEDIAOZHIZHILIANG,MAOPIYINGCUCHE,BANGLIAOYAODUANDA。

     (QI)YANBAZHILIANGGUAN,CUIHUOHOUYINGDUPIANDI1~3GEDANWEI,KEYIDIAOZHENGHUIHUOWENDULAIDADAOYINGDUYAOQIU。DANCUIHUOHOU42CrMoWUFENGGANGGUANYINGDUGUODI,YOUDESHENZHIZHIYOUHRC25~35,BIXUZHONGXINCUIHUO,JUEBUNENGZHISHIYIZHONGWENHUODIWENHUIHUOYIDADAOTUZHIYAOQIUWANSHI,BURAN,SHIQULEDIAOZHIDEYIYI,BINGYOUKENENGCHANSHENGYANZHONGDEHOUGUO。

 

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