论文部分内容阅读
研究了建筑装饰用430(1Crl7)铁素体不锈钢手工A-TIG焊接接头的组织与力学性能。比较了不同种类的单组分和多组分活性剂对于不锈钢焊接临界熔透电流值和焊缝熔深的影响。结果表明,氧化物类活性剂表现了最优异的性能,其中Cr_2O_3可以明显降低临界熔透电流值和增加焊缝熔深。在Cr_2O_3、B_2O_3和SiO_2三种氧化物活性剂的基础上进行最优含量配比,所得活性剂可大大增加焊缝熔深,减少铁素体晶粒尺寸,提高焊缝力学性能。
The microstructure and mechanical properties of 430 (1Crl7) ferritic stainless steel A-TIG welded joints for architectural decoration were studied. The effects of different kinds of single-component and multi-component active agents on the critical penetration current and weld penetration of stainless steel were compared. The results show that the oxide-based active agent exhibits the best performance, Cr_2O_3 can significantly reduce the critical penetration current value and increase the weld penetration. The optimum content of Cr 2 O 3, B 2 O 3 and SiO 2 based on the active ingredient ratio, the resulting active agent can greatly increase the weld penetration, reducing the ferrite grain size, improve the mechanical properties of the weld.