金属热处理 ›› 2021, Vol. 46 ›› Issue (3): 90-95.DOI: 10.13251/j.issn.0254-6051.2021.03.018

• 工艺研究 • 上一篇    下一篇

G115钢大口径管件的热处理

丛相州1,2, 彭杏娜1,2, 彭先宽1,2, 王涛3, 陈正宗4, 姜海峰5, 李传永6, 张书迎6   

  1. 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
  • 收稿日期:2020-11-18 出版日期:2021-03-25 发布日期:2021-05-08
  • 作者简介:丛相州(1979—),男,高级工程师,硕士,主要研究方向为电站管件的设计制造工艺,E-mail:cxz2052@163.com
  • 基金资助:
    国家重点研发计划(2017YFB0305202)

Heat treatment for G115 large diameter pipe fittings

Cong Xiangzhou1,2, Peng Xingna1,2, Peng Xiankuan1,2, Wang Tao3, Chen Zhengzong4, Jiang Haifeng5, Li Chuanyong6, Zhang Shuying6   

  1. 1. Beijing Guodian Futong Science and Technology Development Co., Ltd., Beijing 102401, China;
    2. NARI Group Corporation, Nanjing Jiangsu 211000, China;
    3. Beijing Institute of Structure and Environment Engineering, Beijing 100076, China;
    4. Institute of Special Steel, Central Iron & Steel Research Institute, Beijing 100081, China;
    5. Datang Yuncheng Power Generation Co., Ltd., Heze Shandong 274700, China;
    6. Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan Shandong 250013, China
  • Received:2020-11-18 Online:2021-03-25 Published:2021-05-08

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。

关键词: G115钢, 大口径管件, 热处理, 正交试验

Abstract: 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.

Key words: G115 steel, large diameter pipe fittings, heat treatment, orthogonal test

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