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本文论述了70kg/mm~2级埋弧焊焊丝的设计与研究情况,提出了采用250G 焊剂匹配的可行性。着重研究了焊丝中 Mn/Si 与 Mn、Ni 合金含量不同时对熔敷金属强度、韧性的影响。
This article discusses the design and research of 70kg / mm ~ 2 submerged arc welding wire, and puts forward the feasibility of using 250G flux matching. The effects of different contents of Mn / Si, Mn and Ni alloy on the strength and toughness of the deposited metal were studied.