水平连铸结晶器铜套失效分析
Failure Analysis on Copper Sleeve in Horizontal Continuous Casting Mould
王冀恒1, 洪 昌1, 谢春生1, 田汉普2
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作者单位:(1.江苏科技大学 先进焊接技术省级重点实验室,江苏 镇江 212003;2.湖南省衡阳华菱连轧管有限公司,湖南 衡阳421001)
中文关键字:水平连铸; 结晶器; CuCo2Be铜合金; 失效分析
英文关键字:horizontal continuous casting; mould; CuCo2Be copper alloy; failure analysis
中文摘要:通过宏观分析、金相检验、SEM断口分析及力学性能测试等手段,对连铸钢坯炉次少的CuCo2Be水平连铸结晶器铜套进行失效分析。结果表明:晶界氧化夹杂和铸造、锻造造成的组织缺陷是引起结晶器铜套快速失效的主要原因。
英文摘要: By means of macroscopic and microstructure examination, SEM fractography, mechanical properties testing and so on, the failure of CuCo2Be copper sleeve only used a few times was analyzed. The results show that oxide inclusion in grain boundary and structure defects from casting and forging process are the main reasons for failure of the copper sleeve.