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.
赵海生;郭建峰;王占祥
山西建龙实业有限公司, 运城 043801
DC03钢;点焊;未焊合;轧制变形比
DC03 steel;spot welding;lack of welding;rolling deformation ratio
《理化检验-物理分册》 2024 (003)
64-65,70 / 3
10.11973/lhjy-wl202403016
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