34CrNi1Mo钢焊接预热温度优化研究  

Research on Optimization of Welding Preheating Temperature for 34CrNi1Mo Steel

作　　者：李园园 杨延丽 李利霞 高站起 LI Yuanyuan;YANG Yanli;LI Lixia;GAO Zhanqi(Citic Heavy Industries Co.,Ltd.,Luoyang 471039,Henan,China;China Academy of Machinery Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,Henan,China)

机构地区：[1]中信重工机械股份有限公司,河南洛阳471039 [2]中国机械总院集团郑州机械研究所有限公司,河南郑州450001

出　　处：《热处理技术与装备》2025年第2期15-19,共5页Heat Treatment Technology and Equipment

摘　　要：通过对中碳调质钢34CrNi1Mo的碳当量、冷裂纹敏感指数进行计算,根据预热温度经验计算公式、Seferain法以及冷裂纹敏感指数法分别计算了34CrNi1Mo钢不产生裂纹的理论预热温度。开展斜Y型坡口焊接裂纹试验,进行微观组织观察和硬度检测,优化了34CrNi1Mo钢的焊接预热温度。通过实际应用,取得了满意的焊接效果。Through the carbon equivalent calculations and cold cracking sensitivity index calculations of medium carbon quenched and tempered steel 34CrNi1Mo,the theoretical preheating temperature of 34CrNi1Mo steel without cracks was separately calculated by the empirical calculation formula of preheating temperature,Seferain method and cold cracking sensitivity index method.The welding crack test of inclined Y-shaped groove was carried out,the microstructure were observed and hardness was tested,and the welding preheating temperature of 34CrNi1Mo steel was optimized.Satisfactory welding results have been achieved through practical application.

关 键 词：34CrNi1Mo钢 预热温度 微观组织 硬度检测 

分 类 号：TF31[冶金工程—冶金机械及自动化]