Micro-plasma are surface melting of 0Crl9Ni9 shielded metal are welding joint with a micro-plasma are welder produced a thin surface melted layer with a refined microtructure. The surface treatment changed the anodie ...Micro-plasma are surface melting of 0Crl9Ni9 shielded metal are welding joint with a micro-plasma are welder produced a thin surface melted layer with a refined microtructure. The surface treatment changed the anodie polarization behavior in 0.5 mol/L H2SO4 solution. The polarization tests showed that for the as-welded joint both the heat-affected zone and the weld metal decreased in resis-tance to corrosion compared with the as-received parent material while for the micro-plasma are surface melted joint the corrosion resistance increased significantly. This increase in corrosion resistance is attributed to the rapid solidification of the melted layer. Rapid solidification of the melted layer refines its mierostrueture, decreases its mierosegregation, and inhibits the precipitation of chromium carbides at the grain boundaries.展开更多
人们普遍认为，由于药芯焊丝熔化极气体保护焊（FCAW）和熔化极气体保护焊（GMAW）等“新”的焊接效率和自动化程度更高的焊接工艺的应用，气体保护金属极电弧焊（SMAW）用涂药焊条正在失去昔日的光辉。尽管如此，Bohler Welding Group ...人们普遍认为，由于药芯焊丝熔化极气体保护焊（FCAW）和熔化极气体保护焊（GMAW）等“新”的焊接效率和自动化程度更高的焊接工艺的应用，气体保护金属极电弧焊（SMAW）用涂药焊条正在失去昔日的光辉。尽管如此，Bohler Welding Group Nordic已决定在其下属的Avesta Welding焊条生产厂投资生产不锈钢涂药焊条。公司技术副经理兼本项目负责人Martin Larén先生说，“四百万瑞典克朗的投资将用于更新改造涂药焊条的生产设备。改造完成后，涂药焊条的产能将增加50％，同时，设备的生产效率更高。作为集团公司正在开展的精益生产项目的一部分，我们还正在重建和改造生产厂的布局。”展开更多
文摘Micro-plasma are surface melting of 0Crl9Ni9 shielded metal are welding joint with a micro-plasma are welder produced a thin surface melted layer with a refined microtructure. The surface treatment changed the anodie polarization behavior in 0.5 mol/L H2SO4 solution. The polarization tests showed that for the as-welded joint both the heat-affected zone and the weld metal decreased in resis-tance to corrosion compared with the as-received parent material while for the micro-plasma are surface melted joint the corrosion resistance increased significantly. This increase in corrosion resistance is attributed to the rapid solidification of the melted layer. Rapid solidification of the melted layer refines its mierostrueture, decreases its mierosegregation, and inhibits the precipitation of chromium carbides at the grain boundaries.
