DC03钢点焊未焊合缺陷的产生原因  

Reasons for the occurrence of lack of welding defects in spot welding of DC03 steel

作　　者：赵海生 郭建峰 王占祥 ZHAO Haisheng;GUO Jianfeng;WANG Zhanxiang(Shanxi Jianlong Industrial Co.,Ltd.,Yuncheng 043801,China)

机构地区：[1]山西建龙实业有限公司,运城043801

出　　处：《理化检验（物理分册）》2024年第3期64-65,70,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某DC03钢存在点焊未焊合缺陷。采用化学成分分析、力学性能测试、金相检验等方法分析了材料点焊未焊合缺陷的产生原因。结果表明:材料的碳元素含量较多,硬度偏高,影响了其焊接质量;采用调整炼钢工艺、降低碳元素含量、调整热轧原料厚度等方法,可有效提升产品的焊接质量。A certain DC03 steel had lack of welding defects in spot welding.The causes of lack of welding defects in material spot welding were analyzed using methods such as chemical composition analysis,mechanical performance testing and metallographic examination.The results show that the material had a higher carbon content and higher hardness,which affected its welding quality.By adjusting the steelmaking process,reducing carbon content and adjusting the thickness of hot-rolled raw materials,the welding quality of the product could be effectively improved.

关 键 词：DC03钢 点焊 未焊合 轧制变形比 

分 类 号：TB31[一般工业技术—材料科学与工程] TG115.2[金属学及工艺—物理冶金]