交变磁场及铸造参数对铜管坯凝固组织和性能影响

阎志明; 刘辉; 李廷举; 张小青; 曹志强; 张小立

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交变磁场及铸造参数对铜管坯凝固组织和性能影响
Effects of alternating magnetic field and casting parameters on solidification structure and mechanical properties of copper tube billets
2008年第S1期页码：99-102
纸质出版日期： 2008 ，
DOI：

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[1]阎志明,刘辉,李廷举,张小青,曹志强,张小立.交变磁场及铸造参数对铜管坯凝固组织和性能影响[J].特种铸造及有色合金,2008(S1):99-102.

Yan Zhiming1, Liu Hui3, Li Tingju1, et al. Effects of alternating magnetic field and casting parameters on solidification structure and mechanical properties of copper tube billets[J]. Special Casting & Nonferrous Alloys, 2008,(S1):99-102.
[1]阎志明,刘辉,李廷举,张小青,曹志强,张小立.交变磁场及铸造参数对铜管坯凝固组织和性能影响[J].特种铸造及有色合金,2008(S1):99-102. DOI：

Yan Zhiming1, Liu Hui3, Li Tingju1, et al. Effects of alternating magnetic field and casting parameters on solidification structure and mechanical properties of copper tube billets[J]. Special Casting & Nonferrous Alloys, 2008,(S1):99-102. DOI：

摘要

探索了在水平连铸紫铜管坯工业生产线上施加工频交变磁场

考查了磁场强度及铸造参数对管坯凝固组织及力学性能的影响。结果表明

在交变磁场作用下

铜管坯的凝固组织及力学性能有了明显的改善

各向异性的柱状晶得到了显著的细化

均为细小均匀的粒状晶和等轴晶

当输入电流为50A

铸造速度为0.0042m/s

浇注温度为1150℃

冷却水为1m3/h时

管坯的抗拉强度提高了15.9%

伸长率提高了63.8%。

Abstract

Alternating magnetic field of commercial frequency was used in industrial product line of horizontal continuous casting copper tube billets. The effects of input current intensity of alternating magnetic field and casting parameters were studied to obtain good quality production. The results show that the formerly unhomogeneous columnar grain structure get into homogeneous equiaxed grain structure with the application of alternating magnetic field. When the input current intensity is 50 A

casting speed is 0.0042 m/s

casting temperature is 1 150 ℃ and primary cooling intensity is 1 m3/h

the tensile strength is increased by 15.9% and the elongation is improved by 63.8% compared to those without alternating magnetic field.