改进轧制工艺提高圆管坯质量

Improving Rolling Process to Enhance Quality of Bloom for Tube- making

优质的圆管坯是生产高质量无缝钢管的前提。管坯的表面裂纹会对无缝钢管的质量产生极坏的影响。通过技术攻关，解决了圆管坯的表面裂纹问题，为生产高质量的无缝钢管提供了优质的原料。

No quality round bloom, no quality seamless steel tube. Any surface cracking of the bloom will cause ser－ ious quality problem. Thanks to technical efforts, surface cracking of the round bloom is eliminated, which provides a good basis for producing quality seamless steel tubes in terms of material preparation.