A Study of Solid-State Welding with Metal Powder Medium by Joule Thermal Heat

随着对焊接应用到许多生产过程中的需求的增加，从甚至小的部件到重型机器和结构，例如LSI电路、巨大的桥梁、船舶、海洋和/或空间设备，电阻焊（即，焊接）被广泛应用于焊接设备。例如，电阻压力焊（点焊）以其工艺简单、经济实惠的优点，在生产中得到了广泛的应用，并在理论和实验上得到了广泛的研究。为了验证该方法的可行性，在大气条件下进行了固态焊接试验研究。例如，贱金属），并被纵向压缩，同时传导电流以产生Jo ...更多信息 超热试验研究的主要目的是为研究焊接接头的力学性能和冶金性能提供基础数据，作者报告了所获得的试验数据与母材棒材的拉伸、冲击、U形弯曲试验数据进行了比较，用金相显微镜和扫描电镜对试样的宏观和微观组织进行了观察。粉末介质是200目电枝晶型铜粉、150目铝粉和150目镍粉。通过对焊接接头的宏观和微观组织以及拉伸断口的分析，研究了焊接接头的力学性能和冶金性能。特别地，将所获得的实验数据与母材棒材的实验数据进行了比较，发现接头的强度大致达到母材的强度。少

With increasing demand of applications of welding into many processes of production from even small parts to heavy duty machines and constructions, such as LSI circuits, huge bridges, ships, ocean and/or space equipments, electrical resistance welding (i. e., Spot welding) has become useful, and provides various processes of the production with its technological simplicity and economical advantage.The resistance pressure welding has been widely studied theoretically and experimentally. Some studies are using material such as metal powder media and thin sheet metals between a pair of solid specimens.A tentative experimental study on solid-state welding was performed under atmospheric conditions for basic data and the results were examined to see if the method was applicable, by using metal powder medium which was filled in the space between the two main bodies of specimen bars (i. e., base metal), and was compressed longitu dinally and current was conducted simultaneously to generate Jo … More ule thermal heat. The principal objective of the experimental study was to obtain basic data for investigation of the mechanical and metallurgical properties of the welding.The authors reported that the experimental data obtained were compared with those of the base metal bars, in terms of the tensile, impact, U shape bending tests, the macro and micro structural observation was also made by microscopes and SEM.The material used in this study was pure copper cylindrical bars and aluminum bars for solid specimens and the powder medium were electro-dendritic type copper powder of 200 mesh, aluminum powder of 150 mesh and nickel powder of 150 mesh. Some of the mechanical and metallurgical properties were studied by examining the macro and micro structures of the weld joint section and the fractograph of the tensile fracture. In particular, the experimental data obtained were compared with those of the base metal bars, and it was found that the strength of the joint reached approximately that of the base metal. Less