TP2铜管坯水平连铸表面裂纹研究

肖寒; 张士宏; 张海渠; 张兴国

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TP2铜管坯水平连铸表面裂纹研究
Surface Cracks in TP2 Copper Tube Billets in Horizontal Continuous Casting
2007年第11期页码：864-866
纸质出版日期： 2007 ，
DOI：

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[1]肖寒,张士宏,张海渠,张兴国.TP2铜管坯水平连铸表面裂纹研究[J].特种铸造及有色合金,2007(11):864-866+818.

Xiao Han1, Zhang Shihong1, Zhang Haiqu3, et al. Surface Cracks in TP2 Copper Tube Billets in Horizontal Continuous Casting[J]. Special Casting & Nonferrous Alloys, 2007,(11):864-866.
[1]肖寒,张士宏,张海渠,张兴国.TP2铜管坯水平连铸表面裂纹研究[J].特种铸造及有色合金,2007(11):864-866+818. DOI：

Xiao Han1, Zhang Shihong1, Zhang Haiqu3, et al. Surface Cracks in TP2 Copper Tube Billets in Horizontal Continuous Casting[J]. Special Casting & Nonferrous Alloys, 2007,(11):864-866. DOI：

摘要

通过光谱分析仪、测氧仪、扫描电镜对水平连铸TP2铜管坯裂纹试样进行了分析。结果表明

裂纹主要位于管坯上部

沿圆周方向分布

裂纹属于热裂纹

沿晶界开裂;裂纹断口严重氧化

氧含量为3.15%

裂纹长度为5～15mm

裂纹深度为0.1～1.5mm。控制冷却水的水压和流量、增加牵引速度可以减少裂纹的产生。

Abstract

The surface crack in TP2 copper tube billets in horizontal continuous casting was analyzed by spectral analysis

oxygen content analysis and scanning electron microscope.The results reveal that hot crack is mainly located in the upper of the tube billet

distributing along the circumference of the tube billets and propagating along the grain boundary.In addition

the crack fracture with 5

5 mm in length and 0.1

.5mm in depth is seriously oxidized with the oxygen content of 3.15%.The crack can be effectively eliminated by controlling the pressure and flow volume of cooling water as well as increasing drawing speed.