G115钢大口径管件的热处理  

Heat treatment for G115 large diameter pipe fittings

作　　者：丛相州[1,2] 彭杏娜 彭先宽[1,2] 王涛 陈正宗[4] 姜海峰 李传永 张书迎[6] Cong Xianghou;Peng Xingna;Peng Xiankuan;Wang Tao;Chen Zhengzong;Jiang Haifeng;Li Chuanyong;Zhang Shuying(Bejing Guodian Futong Science and Teehnology Development Co.,LId.,Beijjing 102401,China;NARI Group Corporation,Nanjing Jiangsu 211000,China;Beijing Institute of Structure and Environment Engineering,Beijing 100076,China;Institute of Special Steel,Central lron&Steel Research Institute,Beijing 100081,China;Datang Yuncheng Power Generation Co,Ld.,Heze Shandong 274700,China;Shandong Electrie Power Engineering Consuling Institute Co.,Ltd.,Jinan Shandong 250013,China)

机构地区：[1]北京国电富通科技发展有限责任公司,北京102401 [2]南瑞集团有限公司,江苏南京211000 [3]北京环境强度研究所,北京100076 [4]钢铁研究总院特殊钢研究所,北京100081 [5]大唐郓城发电有限公司,山东菏泽274700 [6]山东电力工程咨询院有限公司,山东济南250013

出　　处：《金属热处理》2021年第3期90-95,共6页Heat Treatment of Metals

基　　金：国家重点研发计划(2017YFB0305202)。

摘　　要：采用正交试验法,分析了正火温度、正火时间、回火温度、回火时间热处理参数对G115钢性能的影响,并通过热压三通热模拟,研究G115钢大口径管件的热处理工艺。结果表明,回火温度对G115钢强度、硬度和冲击性能的综合影响最大。回火温度为780℃时,强度和硬度保持在较高的水平,冲击性能较优。G115钢大口径管件的热处理推荐工艺为正火温度1070~1090℃,保温时间1~2 min/mm且不小于1.5 h;回火温度770~790℃,保温时间3.5~5 min/mm且不小于4 h。试制G115钢大口径管件经推荐工艺处理后,性能均符合T/CSTM 00017—2017标准要求。The orthogonal test method was used to analyze the effects of heat treatment parameters(normalizing temperature,normalizing time,tempering temperature,and tempering time)on the properties of G115 steel,and the heat treatment process of G115 steel large diameter pipe fittings was studied by thermal simulation of hot pressed tee.The results show that the tempering temperature has the greatest comprehensive influence on the tensile strength,hardness and impact performance of the G115 steel.When the tempering temperature is 780℃,the strength and hardness are maintained at a higher level,and the impact performance is better.The recommended heat treatment process parameters for G115 steel large diameter pipe fittings are:normalizing temperature 1070-1090℃,holding time 1-2 min/mm and not less than 1.5 h;tempering temperature 770-790℃,holding time 3.5-5 min/mm and not less than 4 h.After the recommended process treatment,the properties of G115 steel large diameter pipe fittings meet the requirements of T/CSTM 00017-2017 standard.

关 键 词：G115钢 大口径管件 热处理 正交试验 

分 类 号：TG162.8[金属学及工艺—热处理]