大电流金属粉芯焊丝在工程机械制造领域的应用研究

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Abstract： In response to the problems of large heating area of the workpiece base material，large welding deformation，large post welding grinding amount， and multiple welding repair parts in the manufacturing of rectangular box components of acertain typeof engineering machinery product，researchand testingof high current metal powder core welding wire technology were carried out.By comparing and analyzing the welding performance quality，spatter， wire feding speed and process parameters， welding and grinding material costs，and other aspects with the current solid core welding wire，and evaluating the comprehensive application factors，a more suitable welding process method for long straight welds of rectangular box components is found.

Keywords：construction machinery； metal powder core； high deposition efficiency； process research

1序言

目前，工程机械某型产品长方盒类构件均采取截面箱形结构，该箱形结构与普通箱形结构不同，采取凸字形钢结构取消垫板，焊缝一律采用对接接头，结构如图1所示。（剩余4227字）