Abstract：The surface defects of the hot piercing capillary of 30CrMo steel were analyzed by means of macroscopical，scanning electron microscopy，metallographic microscopy and spectroscopy.The results showed that the surface defects of the capillary were caused by sticking foreign bodies on the surface of a certain roll or serious wear of the rollduring tube rolling，which resulted in the formation of bumps on the surface of the roll embossing on the surface of the steel pipe during rolling to for made pression.Then the defects on outer surface of the capillary was deformed and extended in to aspiral and strip depression with anangle of about 30 degrees to the axial direction.
收稿日期: 2018-08-20
出版日期: 2019-04-15
引用本文:
王得礼，谢新亮，林生秀. 30CrMo钢热穿轧毛管表面缺陷分析[J]. 物理测试, 2019, 37(2): 47-49.
WANG De-li， XIE Xin-liang， LIN Sheng-xiu. Analysis of surface defect hot piercing capillary of 30CrMo steel. PHYSICS EXAMINATION AND TESTING, 2019, 37(2): 47-49.
2019, Vol. 37 
