厚壁无缝钢管晶间裂纹缺陷分析  

Analysis of intergranular crack defects in thick-walled seamless steel tubes

作　　者：付乃民 高建学 王庆伟 FU Nai-min;GAO Jian-xue;WANG Qing-wei(Tianjin Steel Pipe Manufacturing Co., Ltd., TIANJIN 300301)

机构地区：[1]天津钢管制造有限公司

出　　处：《天津冶金》2019年第5期40-42,共3页Tianjin Metallurgy

摘　　要：结合460机组实际生产情况,对难变形钢种厚壁钢管存在的晶间裂纹缺陷产生的原因进行了分析,认为晶间裂纹缺陷与钢坯本身的质量有关,同时也受加热制度和穿孔工艺的影响。采取了相应的措施,如提高钢坯的质量、优化管坯加热制度、选择合适的穿孔参数和工具,最终使晶间裂纹缺陷得到了有效的控制。Based on the actual production of 460 units, the cause of the defect of the intercrystalline crack in the thick-wall steel pipe with difficult-to-be-deformed steel is analyzed. It is concluded that the defect of the intercrystalline crack is related to the quality of the billet itself, and is also affected by the heating system and the perforation process. The corresponding measures are taken, such as improving the quality of the steel billet, optimizing the pipe blank heating system, selecting proper perforation parameters and tools, and finally, the intercrystalline crack defect is effectively controlled.

关 键 词：难变形 晶间裂纹 加热制度 穿孔参数 

分 类 号：TG335.7[金属学及工艺—金属压力加工]