摘要
采用金相等方法，对Ｊ５５钢套管坯上的裂纹进行了分析。结果表明：管坯裂纹是因热轧宽钢带基材中存在大量聚集分布的稀土硫氧化物和氧化铝夹杂所致。
The analysis has been taken on the cracks occuring in semi-products of J55 sleeve pipes.The results show that these cracks are caused by the inclusions of rare earth sulphur oxides and alumina distributing in mass in base steel for hot rolled wide strips.
出处
《炼钢》
CAS
北大核心
1999年第2期39-41,共3页
Steelmaking
