The influences of surface defects,deformation temperature,deformation amount,microstructure and nonmetallic inclusions on the cracking of 45 hot-rolled round steel during upset forging at room temperature were studied.
对45热轧圆钢室温顶锻试验中出现的裂纹进行了研究,分析了表面缺陷、变形温度、变形量、显微组织、夹杂物等对顶锻开裂的影响。
There're many problems in quality of steel # 45 produced by LD-LF-CC in Laigang,such as surface pores and upset cracks.
莱钢采用LD-LF-CC(方坯连铸)生产45#钢铸坯质量存在较多问题,主要是表面气孔数量多、轧材顶锻裂纹等。
Through hydrogen determination online during manufacturing process,analyzing inclusions element in 20CrMnTiH by SEM and EDAX analysis,and observing defects on the surface of casting blanks,mechanism of upset cracks of 20CrMnTiH smelted by converter in Laiwu steel is found.
莱钢炼钢厂通过生产过程在线定氢,用扫描电镜和能谱分析了20CrMnTiH钢夹杂组分;观察了铸坯表面缺陷;掌握了转炉冶炼该钢顶锻裂纹产生的机理;并在生产中采取了有效的控制措施,使其顶锻裂纹得到全面改善。
The surface cracking reasons of wire rod in upset process are analyzed.
对高线厂线材顶锻加工表面开裂问题进行分析。