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冷拔精密无缝钢管表面磨削裂纹产生的原因分析

时间:2020-07-23 10:53:33 来源:山东精密钢管厂 http://0915xx.com

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  冷拔精密无缝钢管欧冠联赛下注app表面磨削裂纹产生的原因分析

  1.冷拔精密无缝钢管表面大块状和粗网状碳化物增加了表面的脆性,降低了基体的强度,尤其是沿晶界处的强度低、韧性差,碳化物的热导率只为残余奥氏体的一半,故散热性更差,增加了磨削裂纹的倾向。一般而言,磨削裂纹易于沿晶界扩张,因此呈龟裂状。

  2.SHENTANLINGJIANRECHULIHOUDEMOXUEGUOCHENGZHONG,LINGJIANDEBIAOMIANHUIYINCICHANSHENGDALIANGDERELIANG,SHIBIAOMIANWENDUSHENGGAO,CANLIUDEAOSHITIZUZHIZHUANBIANWEIMASHITIZUZHI,BIRONGZENGDA,GUZENGJIALEBIAOMIANCENGDELAYINGLIERDAOZHILINGJIANDEKAILIE。

<a href=http://0915xx.com/lbjmwfgg/ target=_blank class=infotextkey>冷拔精密无缝钢管</a>表面磨削裂纹产生的原因分析

  另外残余奥氏体的导热性比马氏体差,过多的残余冷拔精密无缝钢管欧冠联赛下注app奥氏体使磨削热量的散热减慢,故造成表层升温速度加快,热应力增大,促使开裂倾向的加剧。

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