高溶着溶接技術「ホットマグ溶接法」の開発とその適用

概要

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An arc welding termed "I2R process" is an attractive one to preheat the electrode wire and then to raise the deposition rate, but it has never been applied to the thin wire around 1.2mm in diameter. Authors recently succeeded in applying this process to the thin wire through the following devices and technologies. The special contact tip was newly designed to keep the contact pressure optimal for an enough period in welding. The proper insulator was employed to secure the heat shock resistance and the thermal conductivity of the tip. And the welding torch was stabilized to minimize spatters under the higher welding speed. The developed process was designated "HOT MAG" for its sufficient preheating. Some applications introduced in this paper prove that it is a promising process to weld thin steel plate for various automobile and earthmover components.
電気製鋼研究会の論文