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42CrMo钢管如何选材?

文章出处:http://bagsbig.com 发表时间:2017/6/9 9:07:37 点击:3

42CrMo钢管如何选材?

42CrMo钢管材料选材的总体原则与其他机械零件的选材相同,即应满足使用性、工艺性和经济性的要求。根据这些原则,结合42CrMo钢管的使用特点,42CrMo钢管选材应具体考虑被加工零件的批量、被加工材料的性质和被选42CrMo钢管材料的性能特点.

1  BEIJIAGONGLINGJIANDEPILIANG

42CrMoGANGGUANDEYUQISHOUMINGSHIYOUBEIJIAGONGLINGJIANDESHENGCHANPILIANGLAIJUEDINGDE。SHENGCHANPILIANGDEDAXIAOSHIHELIXUANYONG42CrMoGANGGUANCAILIAODEZHONGYAOYINSUZHIYI。SHENGCHANPILIANGHENXIAOSHI,ZAIMANZU42CrMoGANGGUANZHENGCHANGGONGZUODEQIANTIXIA,KEXUANYONGJIAGEDILIAN,BIANYUJIAGONGZHIZAODE42CrMoGANGGUANCAILIAO,RUXINHEJIN、ZHUTIEDENG,RUODUICAILIAOYAOQIUGUOGAOHUIZAOCHENGLANGFEI。ZAIDALIANGJIAXIACHANPINSHI,ZEYINGXUANYONGGAOXINGNENG、GAOZHILIANGDECAILIAO,YIMANZUDUI42CrMoGANGGUANGAOSHOUMINGDEYAOQIU,FOUZEXUYAODUOTAO42CrMoGANGGUANCAINENGWANCHENGSHENGCHANRENWU,YESHIBUJINGJIDE。

2  42CrMoGANGGUANCAILIAODEXINGNENGJISHIXIAOTEDIAN

ANZHAOXUANCAIDESHIYONGJIANYUANZE,42CrMoGANGGUANCAILIAODEJIANNENGBIXUMANZU42CrMoGANGGUANDESHIYONGYAOQIU。YINERBIXULEJIE42CrMoGANGGUANCAILIAOZHONGSHENDEXINGNENGTEDIAN,YIYUFASHENGDESHIXIAOXINGSHI,YIJICAIYONGDINGYISHOUDUANFAHUIQIXINGNENGQIANLIDEKENENGXING,YIBIANZHENGQUEPINGJIATAZAITEDINGTIAOSHENXIADECHENGZAINENGLI。

RENHECAILIAODOUXIAOSHINENGTONGSHIJUBEIGEGEFANGMIANDEYOULIANGXINGNENG。42CrMoGANGGUANDEXUANCAI*SHIZHIBUSHIXUANZEXINGNENG,YONGQISUOZHANG,BIQISUODUANcJUTIDISHUO,JIUSHITONGGUOFENQIQIQIEDEj:ZUOTIAOJIAN、SHIXIAOXINGSHI,TICHUCAIJIFANGMIANDEXINGNENGYAOQIU,JINERXUANXIAOZUINENGMANZUZHEIXIEXINGNENGYAOQIUERYIZUIQIESHInfXINGDECAILIAO。YINCI,ZHANGWOCAILIAODEXINGNENGTEZHANG.FAHUICAILIAODEXINGNENGTEZHANGSHIFEICHANGZHONGYAODE。

例如,莱螺栓冷辙r1横.原地cr12钢制作,工作小常出现学期劈裂失效,寿命仅1千—2千件。先采用增加凹模壁厚的方法,结果壁厚达40mm也尤多大效果。后改用碳素工具销咒a制作,采用内孔喷水激冷游壳淬火,有效地克服了r—期劈裂现象,寿命高达2万件以内。这一选材实例说明掌握材料性能特点,在使用时扬长避短的重要性。类似厚壁筒状的凹模.在工作时内壁承受很大的脉动循环切向拉应力。cr12钢的韧性、塑性很差,抗拉强度和疲劳强度较低,在脉动拉应力的作用卜很容易发生白内馈起始的纵向劈裂;这时,cr12钢的高抗压强度和高耐磨性术能发挥作灼。而咒a创相对地韧性较高,内壁的薄壳硬化层不仅硬度较高,耐磨性也较好,而且产生根大的农面压应力,使其疲劳抗力大为提高,钢的性能潜力得到很好的发挥。
3  被加工材料的性质

BEIJIAGONGCAILIAODEXINGZHI,RUBIANXINGKANGLI、MOHAOZUOYONG、YAOHEQINGXIANGJIFUSHIXINGDENG.DUI42CrMoGANGGUANDESHOUMINGYOUHENDADEYINGXIANG,YINERYESHI42CrMoGANGGUANXUANCAIBIXUKAOLVDEYINSU。LIRU,BEIJIYACAILIAOBUTONGSHI,LENGJIYA42CrMoGANGGUANSUOCHENGSHOUDEZAIHECHABIEHENDA,RUBIAO1—1SUOSHI。RUOYONGcr12movGANGZHIZUOLENGJIYAMO,DANGJIYALVCAISHI,SHOUMINGKEDA5WANJIANYISHANG,SHIXIAOXINGSHIWEIMOSUN、LAMAO;ERDANGYONGTAFANJIZHANGGANGCAISHI,YOUYUFANJICONGYINGLIYIJIEJINcr12movGANGDEJIXIANCHENGZAINENGLI,TUMOSHOUMINGZHIYOUJISHIJIAN,SHIXIAOXINGSHIWEIXICUBIANXINGHUODUANLIE。ZHEISHI,XUANYONGCHENGZAINENGLIGENGGAODEGAOSUGANGCAINENGJIBENMANZUSHIYONGYAOQIU,SHOUMINGZAI30LEIJIANYISHANG。

LASHENNIEJIHEJINBANLIAOSHIJIYIFASHENGYAOTAI,CAIYONGcr12movGANGZHIZUOLASHENMO,JIADINGSHIHENKUAIJIUHUICHUXIANYAOHE、LAMAOXIANXIANG,SHIYONGSHOUMINGJIDI。CAIYONG〔gt35XINGGANGJIEYINGZHIHEJINZHIZUOLASHENAOMO,YINGDUWEI65—67hrc,KEDADAJIANRUOYAOHEQINGXIANG,SHOUMINGDAWEITIGAO。

SULIAOZHIJIANDESANGMIANZHILIANGYAOQIUHENGAO.YINERZHUSHEMOXINGQIANGBIXUJINGXIJIADING,JIACHANGDIANYONGSUOZHANBILIHENDA。ZHEIYAOQIUSULIAO42CrMoGANGGUANCAILIAOFUZAIMANZUSHIYONGSHOUMINGDEJICHUSHANG,JUYOULIANGHAODEJIAGONGHEPAOGUANGGONGYIXINGNENG。

JULVYIXIDENGSULIAOZAIZHUSHECHENGXINGGUOCHENGXIAOHUIFENJIECHUFUSHIXINGQITI,RUOCAIYONG—BANGANGCAIZHIZUO42CrMoGANGGUANJIANGHENKUAIFUSHISHIXIAO。CAIYONGMUXIUGANGHUONENGJINXINGBIAOMIANFANGFUSHIGAIXINGDECAILIAOZHIZUO42CrMoGANGGUAN.CAINENGQUDELIANGHAOXIAOGUO。

 


文章来源:http://bagsbig.com

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