the failure mechanism and service sttaus quo of hot piercer point in seamless steel tube were analyzed and its failure was mainly caused by piercer point collapsing nose, sticking steel and cracking.
穿孔顶头是无缝钢管生产中最重要的模具之一,文章通过分析穿孔机顶头的失效形式,并从顶头外形、材质、表面氧化等方面探索提高顶头使用寿命的方法。