The qualified rate of hot upset forging is an important index reflecting the physical quality of hot rolled round steel. On the basis of summarizing the research results of the hot upset forging quality control of hot rolled round steel at home and abroad, the hot upset forging quality of hot rolled round steel was comprehensively investigated, counted and experimentally studied. The common causes of hot upset forging cracks of hot rolled round steel were summarized, and the analysis steps of hot upset forging cracks were introduced. Through the analysis of the morphology and metallographic structure of the hot upset forging cracks, the smelting factors and rolling factors which caused the hot upset forging cracks were expounded and illustrated with examples.
齐晓峰. 热轧圆钢热顶锻裂纹原因分析[J]. 中国冶金, 2019, 29(6): 59-64.
QI Xiaofeng. Cause analysis of hot upset forging crack of hot rolled round steel[J]. China Metallurgy, 2019, 29(6): 59-64.