| 摘要 |
PURPOSE:To obtain the brazing joint of high strength and high heat resistance by minimizing the necessary solder quantity by forming an uniform alloy layer on one part of a base metal. CONSTITUTION:A pre-soldering 3 is executed by heating the junction part of a Cu plate 1 as the material to be joined. An alloy layer 5 is formed on the interface of the base metal 1 and solder by this presoldering and an unreacting solder layer 6 is continuously formed on the upper layer part of the alloy layer 5. A heating and pressure brazing are then performed by giving a current and pressure by the copper electrode 3 of a resistance welding machine. The alloy layer 6 remains on the joining face of after heating and pressure brazing and unreacting solder 7 is discharged from the pace between the joining faces. In this way the joint excellent in tensile strength and heat resistance is obtd.
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