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本文着重分析了重庆无缝钢管厂穿孔机45~#钢水冷顶头失效的原因。根据观测和分析,对顶头的形状、尺寸和表面状态作了某些修改。初步试验表明:试验顶头的使用寿命是旧顶头的2.67倍,并且没出现鼻部熔化和扭断现象。
This article focuses on the analysis of Chongqing seamless steel pipe factory 45 # steel piercing head failure causes. Based on observations and analysis, some changes have been made to the shape, size and surface condition of the head. Preliminary tests showed that: the test head life is 2.67 times the old head, and no nose melting and twisting phenomenon.