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40cr无缝钢管厂家加热缺陷及控制

  • 所属:行业新闻
  • 时间:2019-06-25 09:21:53
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  40cr无缝钢管厂家加热缺陷及控制

  YI GUOREXIANXIANG

  WOMENZHIDAORECHULIGUOCHENGZHONGJIAREGUOREZUIYIDAOZHIAOSHITIJINGLIDECUDA,SHILINGJIANDEJIXIEXINGNENGXIAJIANG。

  1.YIBANGUORE:JIAREWENDUGUOGAOHUOZAIGAOWENXIABAOWENSHIJIANGUOZHANG,YINQIAOSHITIJINGLICUHUACHENGWEIGUORE。CUDADEAOSHITIJINGLIHUIDAOZHIGANGDEQIANGRENXINGJIANGDI,CUIXINGZHUANBIANWENDUSHENGGAO,ZENGJIACUIHUOSHIDEBIANXINGKAILIEQINGXIANG。ERDAOZHIGUOREDEYUANYINSHILUWENYIBIAOSHIKONGHUOHUNLIAO(CHANGWEIBUDONGGONGYIFASHENGDE)。GUOREZUZHIKEJINGTUIHUO、ZHENGHUOHUODUOCIGAOWENHUIHUOHOU,ZAIZHENGCHANGQINGKUANGXIAZHONGXINAOSHIHUASHIJINGLIXIHUA。

  2.DUANKOUYICHUAN:YOUGUOREZUZHIDEGANGCAI,ZHONGXINJIARECUIHUOHOU,SUINENGSHIAOSHITIJINGLIXIHUA,DANYOUSHIRENGCHUXIANCUDAKELIZHUANGDUANKOU。CHANSHENGDUANKOUYICHUANDELILUNZHENGYIJIAODUO,YIBANRENWEICENGYINJIAREWENDUGUOGAOERSHIMnSZHILEIDEZAWURONGRUAOSHITIBINGFUJIYUJINGJIEKOU,ERLENGQUESHIZHEIXIEJIAZAWUYOUHUIYANJINGJIEKOUXICHU,SHOUCHONGJISHIYIYANCUDAAOSHITIJINGJIEDUANLIE。

  3.粗大组织的遗传:有粗40cr无缝钢管厂家中国彩票大马氏体、贝氏体、魏氏体组织的钢件重新奥氏化时,以慢速加热到常规的淬火温度,甚至再低一些,其奥氏体晶粒仍然是粗大的,这种现象称为组织遗传性。要消除粗大组织的遗传性,可采用中间退火或多次高温回火处理

  ER 、TUOTANHEYANGHUA

中国彩票  GANGZAIJIARESHI,BIAOCENGDETANYUJIEZHI(HUOQIFEN)ZHONGDEYANG、QING、ERYANGHUATANJISHUIZHENGQIDENGFASHENGFANYING,JIANGDILEBIAOCENGTANNONGDUCHENGWEITUOTAN,TUOTANGANGCUIHUOHOUBIAOMIANYINGDU、PILAOQIANGDUJINAIMOXINGJIANGDI,ERQIEBIAOMIANXINGCHENGCANYULAYINGLIYIXINGCHENGBIAOMIANWANGZHUANGLIEWEN。

  加热时,钢表层的铁及合金与元素与介质(或气氛)中的氧、二氧化碳、水蒸气等发生反应生成氧化物膜的现象称为氧化。高温(一般570度以上)工件氧化后尺寸精度和表面光亮度恶化,具有氧化膜的淬透性差的40cr无缝钢管厂家钢件易出现淬火软点。

  WEILEFANGZHIYANGHUAHEJIANSHAOTUOTANDECUOSHIYOU:GONGJIANBIAOMIANTULIAO,YONGBUXIUGANGBOBAOZHUANGMIFENGJIARE、CAIYONGYANYULUJIARE、CAIYONGBAOHUQIFENJIARE(RUJINGHUAHOUDEDUOXINGQITI、KONGZHILUNEITANSHI)、HUOYANRANSHAOLU(SHILUQICHENGHAIYUANXING)

  SAN 、QINGCUIXIANXIANG

  GAOQIANGDUGANGZAIFUQINGQIFENZHONGJIARESHICHUXIANSUXINGHERENXINGJIANGDIDEXIANXIANGCHENGWEIQINGCUI。CHUXIANQINGCUIDEGONGJIANTONGGUOCHUQINGCHULI(RUHUIHUO、SHIXIAODENG)YENENGXIAOCHUQINGCUI,CAIYONGZHENKONG、DIQINGQIFENHUODUOXINGQIFENJIAREKEBIMIANQINGCUI。

  SI 、GUOSHAOXIANXIANG

  加热温度过高,不仅引起奥氏体晶粒粗大,而且晶界局部出40cr无缝钢管厂家现氧化或熔化,导致晶界弱化,称为过烧。钢过烧后性能严重恶化,淬火时形成龟裂。过烧组织无法恢复,只能报废。因此在工作中要避免过烧的发生。


40crGANGGUAN,40crHEJINGUAN,40crWUFENGGUAN,40crHEJINGANGGUAN,40crWUFENGGANGGUANCHANGJIA

中国彩票XIAOSHOUREXIAN:13210456668   0635-8882302  0635-8882303 YINJINGLI


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中国彩票HAODONGXI,YIDINGYAOJIDEFENXIANGYO!^_^