足彩跟单app


42CrMo轴承断裂失效分析

2017-02-15  浏览量:1219

XIANWEISHIYANSHI

足彩跟单app(SHENZHENSHIMEIXINJIANCEJISHUGUFENYOUXIANGONGSI,SHENZHENBAOAN,518108)

 

摘要:本文通过经过对失效件进行外观检查、SEM+EDS检查、硬度试验、金相分析化学成分分析等方法,找到失效原因为:轴颈位置补焊后存在较大的热应力,轴肩过渡圆角位置存在未焊合的缺口,加上轴肩过渡圆角属于易应力集中位置,在扭力作用下未焊合的缺口成为疲劳源,最终导致扭转疲劳断裂失效。

 

GUANJIANCI :SEM+EDS;YINGDUSHIYAN;JINXIANGFENXI;HUAXUECHENGFENFENXI;PILAODUANLIE

 

1 前言

SHIXIAOJIANWEIQICHEDIANJIZHOU,CAIZHIWEI42CrMo,RECHULIGONGYIWEIDIAOZHICHULI,JIJIAGONGSHUNXUWEICHE、MO、XIAN。GAIDIANJIZHOUZAISHIYONG4NIANZUOYOU,ZHOUCHENGSUNHUAIBINGGENGHUANGUOZHOUCHENG,GENGHUANZHOUCHENGHOUSHIYONGYIDUANSHIJIANFASHENGDUANZHOU,DUANMIANZHENGHAOYUZHOUCHENGBEIMIANTIEPING。RUTU1SUOSHI,DUANLIEWEIZHIWEIYUP1HEP2ZHIJIAN,P2HEP3BENWEIYITI,CHANGJIAYIJIANGP2、P3ZHIJIANBUFENJUQIEDIAO,CIBUFENJULIDUANKOUJIAOYUAN,BUYINGXIANGDUANZHOUYUANYINFENXI。

 

失效分析

TU1.DIANJIZHOU

 

2 检查分析

2.1 外观检查

足彩跟单appRUTU2、TU3SUOSHI,DUANKOULIANGBUFENNENGWUFENGDUIJIE,WUMINGXIANSUXINGBIANXING;P1KAOJINDUANKOUBUFENBIAOMIANCHENGGAOWENYANGHUASE,DAYUEZHANBANGENZHOUDEZHANGDU,DUANKOUWEIYUDAJINGYUXIAOJINGJIHECHICUNTUBIANTAIJIEDERJIAO。

RUTU4、TU5SUOSHI,P1DUANKOUWAIQUANLIANGSEQIEYOUTONGXINYUANZHOUHENDEWEIZHIWEIZHOUJIANTAIJIEMIAN,KAOJINWAIBIAOMIANYOURONGZHUZHUANGJINSHUNIANFUZAIBIAOMIAN,RONGZHUCHENGGAOWENYANGHUASE;DUANKOUWAIQUANJIBENSHANGYIBEIMOCAZHUANGJIPOHUAI,ZHIYOUZHONGJIANQUYUDUANKOUWANHAO,KEGUANCHADAOMINGXIANDENIUZHUANPILAOTIAOWEN。

RUTU6SUOSHI,P2BIAOMIANJUYOUMINGXIANYUANZHOUFANGXIANG、KUANDUYIZHIDEMOCAHENJI,MOCAHENJIAOQIAN,WEIZHOUJINGWEIZHI;ZAIZHOUJINGDELIANGCEKEGUANCHADAOMINGXIANWEIRONGHEJINSHUCENG,JIEHEP1DUANKOUBIAOMIANCUNZAIRONGZHUXIANXIANG,TUIDUANDIANJIZHOUKENENGCUNZAIBUHAN,HOUXUTONGGUOJINXIANGFENXIHESEM/EDSFENXIZAIYANZHENG。

RUTU7SUOSHI, P2DUANKOUPINGZHENG,DUANMIANYUZHOUXIANGCHUIZHI,DUANKOUWAIBIAOMIANDUOCHUCUNZAIQUEKOUJILIEWEN,QUEKOUNEIBIAOMIANCHENGYANGHUASEQIEYOUJIAODUOWURANWU;DUANKOUWAIQUANGUANGHUAQIECHENGANSE,ZHANZHENGGEDUANKOUMIANJI3/4ZUOYOU,BUFENLIANGSEQUYUWEIDUANZHOUHOUZHUANGJIMOCAXINGCHENG;ZHONGXINQUYURUOGANTONGXINYUANZHUANGDENIUZHUANPILAOTIAOWEN,ZHANZHENGGEDUANKOUMIANJI1/4ZUOYOU,CHENGNIUZHUANPILAOTEZHENG。

 

失效分析 失效分析
图2. 断口位置外观检查 图3. 断口匹配检查
失效分析 失效分析
图4. P1断口低倍观察 图5. P2断口低倍观察
失效分析 失效分析
图6. P2外圆周检查 图7.P2断口低倍观察

 

2.2 SEM+EDS检查

足彩跟单appRUTU8-TU13SUOSHI,P1DUANKOUBIANYUANWEIZHOUJIANWEIZHI,KEGUANCHADAOMINGXIANDERONGZHU;DUANKOUWAIQUANDABUFENQUYUYIBEIMOCAZHUANGJIPOHUAI,WEIPOHUAIQUYUCHENGANSE,BIAOMIANGUANGHUA,WEICHUANJINGJIELITEZHENG;DUANKOUXINBUKEGUANCHADAOMINGXIANDETONGXINYUANXINGPILAOTIAODAI,WEINIUZHUANPILAODUANKOU。

RUTU14-TU19SUOSHI,P2DUANKOUXINGMAOYUP1LEISI,WAIBIANCUNZAIJIAODUOQUEKOU,DUIQUEKOUJINXIANGEDSWEIQUCHENGFENFENXI,JIEGUOJIANBIAO1,WAIBIANYUANCHENGFENYUXINBUCHENGFENCUNZAICHAYI(WAIBIANYUANBUHANCr、Mn),QUERENWAIBIANYUANBUTONGXINGMAOWEIZHIWEIBUHANCENG。

 

失效分析 失效分析
图8.P1断口中间位置SEM观察 图9.P1断口中间位置SEM放大观察
失效分析 失效分析
图10.P1断口1/2位置SEM观察 图11.P1断口1/2位置SEM放大观察
失效分析 失效分析
图12.P1断口轴肩位置SEM观察 图13.P1轴肩位置SEM放大观察
失效分析 失效分析
图14.P2断口中间位置SEM观察 图15.P2断口中间位置SEM放大观察
失效分析 失效分析
图16.P2断口边缘位置SEM观察 图17.P2断口边缘位置SEM放大观察
失效分析 失效分析
图18.图17中位置1的EDS测试谱图 图19.图17中位置2的EDS测试谱图

 

BIAO1.P2DUANKOUBIANYUANEDSFENXIJIEGUO(wt%)

Spectrum C O Na Al Si P Cl Ca Cr Mn Fe Total
1 13.2 16.8 0.8 / 1.0 / 0.5 / / / 67.8 100.0
2 5.4 5.0 / 0.9 1.3 0.5 / 0.7 1.3 0.6 84.2 100.0

 

2.3 硬度试验

ANGB/T 230.1-2009BIAOZHUNFANGFAJIANYANSHIXIAOJIANHENGJIEMIANXINBUHEWAIBIAOMIANYINGDU,JIEGUOJIRUBIAO2。

GB/T 3077-199ZHONG42CrMoDECUIHUO+HUIHUO(DIAOZHICHULI)GONGYIHOUDEYINGDUYAOQIUWEI≤217HBW,CANZHAOASTM E140-05E1《JINSHUBIAOZHUNYINGDUHUANSUANBIAO》BIAOZHUNZHUANHUANCHENGLUOSHIYINGDUYUEWEI20HRC,XINBUYINGDUPIANGAO,WAIBIAOMIANYINGDUPIANDI。

 

足彩跟单appBIAO2. YINGDUJIANCHAJIEGUO(HRC)

测试位置 1 2 3 平均值
外表面 9.0 11.2 15.8 12.0
心部 27.3 27.8 28.2 27.8

 

2.4 金相分析

RUTU20-TU25SUOSHI,YANP1ZHOUXIANGZUOQIEPIAN,PAOGUANGFUSHIHOUFAXIANZHOUBIAOMIANYUXINBUZUZHIJUYOUBUTONGZUZHI,JIEXIANMINGXIAN,QUEDINGZHOUCHENGZHUANGPEIWEIZHICUNZAIBUHANCAOZUO,DUANKOUWEIYUBUHANBIANYUANDEREYINGXIANGQU,JIANGTUZHONGBUTONGZUZHIQUYUYICIBIAOJIWEIA、B、C:AWEIBUHANRONGRONGQU,BWEIZHOUREYINGXIANGQU,CWEIZHOUJICAI,JINXIANGZUZHIYICI:AQUWEIWANGZHUANG、CUZHENZHUANGTIESUTI+LIZHUANGHEZHENZHUANGMASHITI+ZHENPIANZHUANGWEISHITI,ANGB/T1329-1991PINGDINGWEISHITIZUZHIWEIBXILIE5JI;BQUWEISHAOLIANGLIZHUANGTITIESUTIJITIZHUGUANGTI;CQUWEISHAOLIANGZHENZHUANGWEISHITI+BAOLIUMASHITIWEIXIANGDEZHENZHUANGSUOSHITI,XINBUDAIZHUANGZUZHIMINGXIAN,ANGB/T1329-1991PINGDINGDAIZHUANGZUZHIJIBIEWEICXILIE5JI。

 

失效分析  
图20.P2金相切片宏观图  
失效分析 失效分析
图21.补焊区金相检查(50X) 图22.A区金相检查(500X)
失效分析 失效分析
图23.B区金相检查(500X) 图24.C区低金相检查(100X)
失效分析  
图25.心部金相检查(500X)  

 

2.5 化学成分分析  

CAIYONGICPFENXIDIANJIZHOUCAIZHICHENGFEN,FENXIJIEGUOJIANBIAO3,YUGB/T 3077-1999DUIZHAO,FUHE42CrMoPAIHAOGANGCAIDEBIAOZHUNYAOQIU,WUCUOLIAOXIANXIANG。

 

BIAO3:HUAXUEYUANSUFENXIJIEGUO(wt%)

元素 测试结果(%) 检出限(%) 3标准要求(%)
碳(C) 0.4162 0.0010 0.38~0.45
硫(S) 0.0053 0.0005 ≤0.25
硅(Si) 0.2530 0.0010 0.17~0.37
锰(Mn) 0.7595 0.0010 0.50~0.80
磷(P) 0.0137 0.0010 ≤0.25
铬(Cr) 1.145 0.0010 0.90~1.20
镍(Ni) 0.0298 0.0010 ≤0.30
钼(Mo) 0.1737 0.0010 0.15~0.25
铜(Cu) 0.0242 0.0010 ≤0.20

 

3 理论分析

YIBANZHOUJINGBUHANGUOCHENGZHONGYAOZUNXUNDEYIXIAYUANZE:

(1)YOUYUSUOHANJIEDEDIANJIZHOUSHIJINGGUODIAOZHICHULIDE,ZAIHANJIEJIAGONGHOUBUKENENGDUIQIJINXINGHUIFURECHULIGONGYI,YINCI,HANJIEHOUDEQIANGDUYAODADAOHUOJIEJINDIANJIZHOUYUANYOUDEJIXIEXINGNENG,BINGZAIHANJIEGUOCHENGZHONGCAIQUHELICUOSHIJIANXIAOREYINGXIANGQUDERUANHUA。

(2)JINKENENGJIANXIAOHANJIEBIANXING,WEIHOUXUDEJIJIAGONGDAILAIFANGBIAN。

(3)TANLIANGJIHEJINYUANSUHANLIANGJIAOGAO,HANJIESHIYOUJIAODADERELIEWENMINGANXINGBINGYOUJIAODADELENGLIEWENQINGXIANG,HANJIESHIYINGBIMIANHANJIELIEWENDECHANSHENG。

CONGWAIGUANJIANCHAJIDIBEIFENXIKEZHI,DUANKOUWEIYUZHOUJIANGUODUYUANJIAOWEIZHI,GAIWEIZHICUNZAIJIAODUOBUHANHOUWEIHANHEDEQUEKOU,QIEQUEKOUDECHICUNJIAODA,YUEBANGENZHOUBIAOMIANCHENGGAOWENYANGHUASE,SHUOMINGZAIBUHANGUOCHENGZHONGSHOURECHENGDUTEBIEGAO,YINGXIANGFANWEIDA,JIBUHANHOUCANLIUJIAOGAODEREYINGLI。

足彩跟单appHOUXUSEM/EDS、JINXIANGFENXIQUEDINGDUANLIEQIYUANYUBIAOMIANDEWEIHANHEDEQUEKOU,YESHIBUHANHOUDEREYINGXIANGQU,CHENGDUOYUANFENBUTEZHENG。RONGRONGQUCUNZAIJIAODUODEWEISHITIZUZHI,XINBUYECUNZAISHAOLIANGWEISHITIZUZHIHEHEJIAOYANZHONGDEDAIZHUANGZUZHI,WEISHITIZUZHISUXINGCHA、RENXINGDI,HUIMINGXIANJIANGDIZHOUDEQIANGDU,YESHIREYINGLICANLIUJIAOGAODETEZHENGZHIYI,KEJIANDIANJIZHOUZAIBUHANHOUWEINENGXIAOCHUREYINGLIYINGXIANG。

CONGYINGDUSHANGKAN,CANKAOGB/T 3077-199BIAOZHUN,XINBUSHOUHANJIEREYINGXIANG,DAOZHIYINGDUPIANGAO。

足彩跟单appCONGCHENGFENSHANGKAN,DIANJIZHOUYONGLIAOZHENGQUE,WUCUOLIAOXIANXIANG。

足彩跟单appZONGSHANG,DIANJIZHOUSHIXIAOYUANYINWEIBUHANWEIZHICUNZAIJIAODAREYINGLI,QIEYIYINGLIJIZHONGDEZHOUJIANGUODUYUANJIAOWEIZHICUNZAIBIAOMIANQUEXIAN,SHOUNIULIZUOYONGTIAOJIANXIAZAIBIAOMIANQUEKOUQUEXIANWEIZHIPILAOQIYUANKAILIE,DAOZHIDIANJIZHOUNIUZHUANPILAOSHIXIAO。

 

4 结论

足彩跟单appDIANJIZHOUSHIXIAODEYUANYINWEIZHOUJINGWEIZHIBUHANHOUCUNZAIJIAODADEREYINGLI,ZHOUJIANGUODUYUANJIAOWEIZHICUNZAIWEIHANHEDEQUEKOU,JIASHANGZHOUJIANGUODUYUANJIAOSHUYUYIYINGLIJIZHONGWEIZHI,ZAINIULIZUOYONGXIAWEIHANHEDEQUEKOUCHENGWEIPILAOYUAN,ZUIZHONGDAOZHINIUZHUANPILAODUANLIESHIXIAO。

 

5 参考文献

足彩跟单app[1] LIUQUNQIDENG.40CrDIANJIZHOUDEHANBUJIHANHOUJIAGONGGONGYI[J]. 《MEIKUANGJIXIE》.2010.31(7)

足彩跟单app[2] YANGLIFEI.HEDIANCHANGTONGFENGXITONGDIANJIZHOUDUANLIEGENBENYUANYINFENXI[J]. HEDONGLIGONGCHENG. 2013.34(3)

[3] BAFAHAI.JINGYAJIDIANJIZHOUDUANLIEYUANYINFENXI[J].JIXIEGONGCHENGCAILIAO.2010.34(8) 

[4] LIDONGLIN.NEIRANJICHEQIANYINDIANJIZHOUDUANLIEFENXIJIJIEJUEFANGAN.2014.11

[5] LIYAJIANG.SHIYONGHANJIEJISHUSHOUCE[K].SHIJIAZHUANG:HEBEIJISHUCHUBANSHE,2002.

[6] CHENGDAXIAN.JIXIESHEJISHOUCE[K].BEIJING:HUAXUEGONGYECHUBANSHE,2002.

[7] CHENYUCHUAN.HANJIEGONGYIPINGDINGSHOUCE[K].BEIJING:JIXIEGONGYECHUBANSHE,1999.

[8] WANGYINGJIE.JINSHUCAILIAOJIRECHULI[M].BEIJING:JIXIEGONGYECHUBANSHE,2006.

足彩跟单app[9] LIJIONGHUI.JINSHUCAILIAOJINXIANGTUPU[M].BEIJING:JIXIEGONGYECHUBANSHE,2006.

 

*** YISHANGNEIRONGJUNWEIYUANCHUANG,RUXUZHUANZAI,QINGZHUMINGCHUCHU ***

 

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