45钢010 mm材冷锻裂纹的分析和工艺改进措施

特殊钢 ›› 2009, Vol. 30 ›› Issue (1): 50-51.

45钢010 mm材冷锻裂纹的分析和工艺改进措施

李勇^1,2, 战东平¹, 韩作宽², 魏东², 于学渊², 宋西平³

1东北大学材料与冶金学院，沈阳110004；
2抚顺新钢铁有限责任公司，抚顺113001；
3北京科技大学，北京100083

收稿日期:2008-07-16 出版日期:2009-02-01 发布日期:2022-11-30
作者简介:李勇(1972-),男，工程师，技术副厂长，鞍山钢铁学院毕业，钢铁冶金.

An Analysis on Cold Upsetting Crack of 0. 45 C Steel 010 mm Products and Process Improved Measures

Li Yong^1,2, Zhan Dongping¹ , Han Zuokuan², Wei Dong², Yu Xueyuan² , Song Xiping³

1东北大学材料与冶金学院，沈阳110004；
2抚顺新钢铁有限责任公司，抚顺113001；
3北京科技大学，北京100083

Received:2008-07-16 Published:2009-02-01 Online:2022-11-30

摘要/Abstract

摘要： 通过对新抚钢40 t LD-钢包吹氩-CC-高速线材轧制的φ10mm 45钢冷镦裂纹的分析,得出钢中Al₂O₃、MnS夹杂和片状珠光体组织是冷镦裂纹产生的主要原因。通过采用降低炉料中的硫含量使[S]从0.029%降至0.020%,控制LD终点[C]和降低终点[O],轧材经球化退火后钢的伸长率从21.6%提高到30.4%等措施,避免了冷镦裂纹的发生。

关键词: 45钢, LD, 钢包吹氩, 冷镦裂纹, 工艺改进

Abstract: According to analysis on cold upsetting crack of 0. 45C steel φ10 mm rolled products produced by 40 t LD- ladle argon blowing- CC- high speed rod mill process flow sheet at New Fushun Steel, it was obtained that the inclusions Al₂O₃, MnS and the lamellar pearlite in steel were main reason to form cold upsetting crack. With decreasing the sulphur content in charge, decreasing ［S］from 0. 029% to 0. 020%，controlling LD end ［C] and decreasing end [O] , spheroidizing annealing rolled products to increase elongation of steel from original 21. 6% to 30. 4% , the formation of cold upsetting crack was avoided.

Key words: 0. 45C Steel, LD, Ladle Argon Blowing, Cokl L psetting Crack, Process Improvement

李勇, 战东平, 韩作宽, 魏东, 于学渊, 宋西平. 45钢010 mm材冷锻裂纹的分析和工艺改进措施[J]. 特殊钢, 2009, 30(1): 50-51.

Li Yong, Zhan Dongping , Han Zuokuan, Wei Dong, Yu Xueyuan, Song Xiping. An Analysis on Cold Upsetting Crack of 0. 45 C Steel 010 mm Products and Process Improved Measures[J]. Special Steel, 2009, 30(1): 50-51.