ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2018, Vol. 39 ›› Issue (6): 40-42.

• 工艺技术 • 上一篇    下一篇

不锈钢022Cr25Ni22Mo2N电渣锭锻造裂纹原因分析和工艺改进

张 军1, 李造宇1, 杨 娥1, 张永强1, 贾余超2   

  1. 大冶特殊钢股份有限公司1高品质特殊钢湖北省重点实验室;2锻造厂,黄石435001


  • 收稿日期:2018-06-12 出版日期:2018-12-01 发布日期:2022-05-26
  • 作者简介:张军(1983-),男,工程师,2006年太原理工大学(本科)毕业,不锈钢产品研发。

An Analysis on Forging Cracks of ESR Ingot of Stainless Steel 022Cr25Ni22Mo2N and Process Improvement

Zhang Jun1 , Li Zaoyu1, Yang E1 , Zhang Yongqiang1 , Jia Yuchao2   

  1. 1 Hubei Key Laboratory of High Quality Special Steel;
    2 Forging Works,
    Daye Special Steel Co Ltd, Huangshi 435001
  • Received:2018-06-12 Published:2018-12-01 Online:2022-05-26

摘要: 20 t EAF-VOD-LF-VD-铸棒-2.5 t电渣重熔锭锻成Φ200 mm圆棒上发现大量表面横向裂纹,采用扫描电镜对裂纹的微观形貌进行观察,分析结果表明,裂纹是由于锻造前加热温度过高,导致了晶界熔融而造成的。通过试验和生产实践得出,022Cr25Ni22Mo2N钢电渣锭加热温度由原1180℃降至1110℃时,消除了锻材裂纹。

Abstract: It is found that a large amount of surface transverse cracks at Φ200 mm round bar forged from 2.5 t ESR ingot remelted from 20 t EAF-VOD-LF-VD-casting electrode. To observe the morphology of cracks by scanning electron microscope the analysis results show that overheating of ingot before forging leads to melting of grain boundary to form forging cracks. It is obtained by test and production practice that as steel 022Cr25Ni22Mo2N ingot heating temperature decreases from original 1 180 to 1 100 X. the forgings cracks are eliminated.