45圆钢冷拔加工开裂原因分析
Analysis on Cracking Reason of 45 Round Steel in Cold Drawing Processing
摘 要
针对45圆钢冷拔加工开裂的问题,从材料成分、组织、夹杂物、尺寸精度等方面进行了分析.结果表明：由于圆钢的椭圆度较大,圆钢直径较大一侧在拉拔过程中承受较大的拉应力,当拉应力超过圆钢表面的抗拉强度时,在圆钢表面形成横裂纹,出现横裂纹的圆钢在进一步加工时发生开裂.
冷拔加工
开裂
表面裂纹
椭圆度
45 round steel
cold drawing processing
cracking
surface crack
ovality
Abstract
Pointing at the cracking problem of 45 round steel in cold drawing processing, the analysis was carried out from the aspects of material composition, microstructure, inclusions, dimensional accuracy and so on.The results showed that the larger side of round steel bore the large tensile stress in the process of drawing, as a result of the larger ovality of round steel.When the stress exceeded the tensile strength of steel surface, a transverse crack emerged in the surface of round steel, and expanded in further processing.
中图分类号 TG316.1+2
所属栏目 质量控制与失效分析
基金项目
收稿日期 2014/5/28
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作者单位点击查看
备注张海旺(1981-),男,工程师,硕士.
引用该论文: ZHANG Hai-wang,LI Zhao-hui,WANG Peng. Analysis on Cracking Reason of 45 Round Steel in Cold Drawing Processing[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2015, 51(5): 368～371
张海旺,李朝辉,汪鹏. 45圆钢冷拔加工开裂原因分析[J]. 理化检验－物理分册, 2015, 51(5): 368～371
被引情况:
【1】万长杰,白瑞娟,申丽娟,王清波,赵新伟, "45钢原始奥氏体晶界的显示方法",理化检验－物理分册 52, 174-176(2016)
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参考文献
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【3】管庆刚,栾兆亮.45钢棒材拉拔中心横向裂纹原因分析[J].山东冶金,2004,26(4):38-40.
【2】戚新军.圆钢表面裂纹的原因分析及解决措施[J].金属制品,2006,32(3):26-27.
【3】管庆刚,栾兆亮.45钢棒材拉拔中心横向裂纹原因分析[J].山东冶金,2004,26(4):38-40.
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