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16mndg钢管产品材质与应用

浏览次数:33 次 发布日期:2018-09-12 15:55:55 信息来源:山东省龙川钢管制造有限公司|http://idamumbai.com
 
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标签: 16mndg钢管

16mndgGANGGUANSHENCENGQUEXIANCHANSHENGJILIJIASHE


500万彩票  “深层缺陷产生机理假设”是目前分析缺陷一种方法,特别在钢铁产品的缺陷分析用途广泛。认为深层缺陷是材料延性降低引起的一种缺陷。当发生深层缺陷的长轴制品的锻造时间要比未发生缺陷的制品长,可以预料由于温度降低,材料的延性降低。在实际发生的表面缺陷附近,除了成为问题的深层缺陷之外,还可确认多个细小的缺陷。缺陷前端锐利,为应力集中部位,所以形成细小缺陷后,由于施加拉伸应力,缺陷前端裂纹有扩展的可能。

  某钢铁公司针对16mndg钢管表面出现的质量缺陷,研究了表面深层缺陷的产生机理,认为与通常使用的热拉伸试验的延性评价方法相比,采用热压缩试验评价延性,可以评价自由锻造深层缺陷的发生,由此可以确定,抑制表面缺陷产生的温度等锻造极限条件,从而抑制表面缺陷的形成。这种缺陷分析思路就是基于深层缺陷产生机理假设。

500万彩票  MOUGANGTIEGONGSIZAIZHIZAOCHUANBOYONGQUZHOUDEYUANCAILIAOHECHUANDONGZHOU、FANYINGDUIQIAOTIDENGDAXINGDUANGANGJIANDEZIYOUDUANZAOZHONG,YOUSHIHUICHANSHENGBIAOMIANQUEXIAN,DUANZAOZUOYEZHONGCAIYONGHUOYANQINGLIQUCHU。DANSHI,RENWEIREYANXINGLIANGHAODEGANGZHONGHENSHAO,YEYOUZAIDUANZAOHOUHETUIHUO、DIAOZHIHOUFAXIANSHENCENGQUEXIANDEQINGKUANG。RUGUOCANLIUYOUBIAOMIANQUEXIAN,JISHIJIAOQIANDEBIAOMIANQUEXIANYEBIXUYONGSHALUNMOXUEQUCHUQUEXIANHESHISHICIFENTANSHANGJIANCEDENG,ZAOCHENGCHENGBENDEZENGJIAHESHENGCHANLVDEXIAJIANG。RUGUOSHISHENCENGQUEXIAN,XUYAOXIUFUZUOYESHI,YEYOUBUNENGQUEBAOJIXIEJIAGONGDEJIAGONGLIANG,BUNENGZAIZUOWEICHANPINSHIYONGDEQINGKUANG,ZHEIYANGSUNSHIJIUHUIFEICHANGDA。

  GAIQUEXIANCHANGFASHENGZAIDUANGANGJIANDEZHANGZHOUZHIPIN。GAIZHIPINJINGTUIHUO、DIAOZHIHOU,QUERENLEDUOGEZHOUXIANGBIAOMIANQUEXIAN。ZAIQUERENDEDUOGEZHOUXIANGBIAOMIANQUEXIANZHONG,XUANZELEJIAOSHENDEQUEXIAN,GAIZHOUXIANGBIAOMIANQUEXIAN,WAIGUANSHANGKEYIKANJIANXIANGZHEHEN。DANSHI,TONGCHANGDUANZAODAOZHIDEBIAOMIANCAILIAOLIUDONGYINQIDEZHEHENZHUANGQUEXIANZUISHENBUGUOSHI5mmDESHENDU,ERGAIQUEXIANZUIDASHENDUWEI20mmYISHANG。ZHEIZHONGZHEHENZHUANGJIAOSHENDEQUEXIANHENSHAOFASHENG,QIFASHENGJILIMUQIANSHANGBUMINGQUE。

  SHOUXIAN,HUAIYIKENENGSHIYOUYUTUIHUO、DIAOZHISHIDEREYINGLICHANSHENGLIEWEN,HUOSHIXIXIAOQUEXIANDEKUOZHAN。ZAIQUEXIANZHOUBIANQUERENLEKUANYUE400μmDETUOTANCENG。QUEXIANZHOUBIANDETUOTANCENGHOUDUSHOUCONGQUEXIANFASHENGDAOJIANCECHUDEQUEXIANZHOUBIANDERELVLIDEYINGXIANG。YINCI,SHICT(JINCOULASHEN)SHIYANGFASHENGPILAOLIEWEN,JIANGPILAODUANLIEBUFENQIECHU,MONILEDUANZAOWENDU①1100℃,②800℃YIHOU,③DIAOZHISHIDELENGQUEGONGXUYIHOUDESANZHONGTIAOJIAN。GUANCHAJIEGUO,LIEWENZHOUBIANCHANSHENGDETUOTANCENGHOUDUFENBIESHI650μm、500μmHE300μm。CONGZHEIYIJIEGUORENWEI,GAIQUEXIANBUSHIDIAOZHISHIFASHENGDE,ERSHIFASHENGZAIDUANZAOGUOCHENGZHONG。

  RANHOU,DIAOCHALEDUANZAOZUOYEZHONGHESHIFASHENGQUEXIAN。BIJIAOHEGUANCHALEGAIDUANJIANDERELVLIHEQUEXIANZHOUBIANZUZHI,JINXINGLEDUANZAOZUOYEXIANCHANGHEZUOYESHIPINQUERENDENGDEZHUANGKUANGDIAOCHA。DUANZAOZUOYEZHONGJUTIDEQUEXIANFASHENGSHIQIBUNENGTEDING。TEBIESHIZHOUXIANGQUEXIAN,ZAIRETAIXIA,JISHISHISHULIANDEZUOYERENYUANYEHENNANFAXIAN,DANGCHANGQUERENDEZHIPINZHONGYEYOUTUIHUO、DIAOZHIHOUFAXIANSHOUGEQUEXIANDEQINGKUANG。ZAIDUANZAOZUOYEZHONGDECAILIAOBIAOMIANZHANFUZHEYANGHUATIELIN、DUANZAOJIANBIAOMIANAOTUBUPING,SUOYIHENNANFAXIANQUEXIAN。

  采用“深层缺陷产生机理的假设”,分析结果马上得到了确认,如果压下量增大,缺陷周边会产生拉伸应力。假设16mndg钢管表面发生的深层缺陷是由于锻造时材料的延性降低,折痕状细小的缺陷扩展而形成的缺陷,研究了材料延性和缺陷扩展的评价方法。

  CONGRELASHENSHIYANDEJIEGUODEDAOSUOYOUGANGZHONGZAI650℃YISHANG,CAILIAOYANXINGMEIYOUJIAODACHAYIDEJIEGUO。GAIJIEGUOYUSHIJIZHIZAOZHONGDEBIAOMIANQUEXIANFASHENGPINLVBUYIZHI,SUOYIWEILEPINGJIAZIYOUDUANZAOZHONGDEYANXING,YANJIULEQITAFANGFA。ZHOUXIANGHUOZHOUXIANGSUOYOUDEBIAOMIANQUEXIAN,JIASHEFASHENGSHENCENGQUEXIAN,SHEJILESHIYONGDAIQUEKOUYUANZHUDEREYASUOSHIYAN。SHIYANXIANJIANGJIAGONGCHENGQUEKOUDEYUANZHULIAOJIAREDAOGUIDINGDEWENDUHOU,ZAIMONISHIJIBIAOCENGHUANLENGDAOSHIYANWENDU,SHIYONGDUANMIANJUSHUJIAJUJINXINGYASUO。YUANBENYINGGAIZAIXIANGDUIHEZHONGFANGXIANGDECHUIZHIFANGXIANGJIAGONGYIGEQUEKOU,DANJUQUEKOUQIANDUANDESHENZHANLIANGHENXIAO,SUOYICHAYIBUMINGXIAN。YINCI,WEISHISHENZHANLIANGCHANSHENGMINGXIANDECHAYI,JIANGQUEKOUSHEZAIYUHEZHONGPINGXINGDEFANGXIANG,JINXINGLESHIYAN。CIWAI,JISHIBIANHUAQUEKOUFANGXIANG,YOUYUYINGLIJIZHONG,JUQUEKOUQIANDUANDELIEWENFASHENGDEZHUANGKUANGBENSHENMEIYOUCHAYI。SHIYANTIAOJIANXIA,MINGQUELELIEWENRONGYISHENZHANDEGANGZHONGSHUNXU,YUGEGANGZHONGSHIJIZHIZAOSHIDEBIAOMIANQUEXIANFASHENGDEPINLVYIZHI。

  YIBANCAIYONGRELASHENSHIYANDEDUANMIANSHOUSUOLVPINGJIABIAOMIANQUEXIANFASHENGPINLV,DANREYASUOSHIYANKEYIGENGHAODIPINGJIABIAOMIANQUEXIANFASHENGPINLV。GENJUSHANGSHUJIEGUORENWEI,GANGZHONGJIANDEYANXINGCHAYIYOUKENENGCAIYONGREYASUOSHIYANDESHENZHANZHANGDUJIUKEYIGENGLINGMINDIPINGJIA,ZHENGRUJIASHEDEQUEXIANCHANSHENGJILINEIYANG,SHIJISHENCENGQUEXIANDECHANSHENGYESHIYOUXIXIAOQUEXIANSHENZHANDAOZHIDEKENENGXINGJIAODA。

  YANJIUDEREYASUOSHIYANDESHENZHANZHANGDUYURELASHENSHIYANDEDUANMIANSHOUSUOLVZHICUNZAIXIANGGUANXING,YUCHUANTONGSHANGTONGCHANGSHIYONGDERELASHENSHIYANDEYANXINGPINGJIAFANGFAXIANGBI,CAIYONGREYASUOSHIYANPINGJIAYANXING,KEYIPINGJIAZIYOUDUANZAODESHENCENGQUEXIANDECHANSHENG。FENXISHIRENWEIREYASUOSHIYANKEYIGENGLINGMINDIPINGJIAZIYOUDUANZAOZHONGGEGANGZHONGDEREQUJIANDEYANXING。ZHEIJIUSHISHENCENGQUEXIANCHANSHENGJILIJIASHEDEQIMIAOZHICHU。


文章来源:http://idamumbai.com

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