年次大会講演論文集
Online ISSN : 2433-1325
セッションID: 2806
会議情報
2806 超狭隘部溶接機の開発と火力発電ボイラへの適用(S35-2 溶接・接合の動向とその展開(2),S35 溶接・接合の動向とその展開)
渡辺 浩光畑 浩一上田 圭司明賀 俊治永島 利治
著者情報
会議録・要旨集 フリー

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抄録
An ultra compact orbital welding equipment for butt welding of water-wall tubes of power generating boilers at erection sites has been developed. The minimum radial clearance of the welding head is 17mm, and this value is minimum in the world. To achieve the 17mm radial clearance, the new arc length control mechanism and the flat welding torch of 7mm thickness have been developed. The differential motion mechanism was used for the arc length control, and the driving gears were set up in the part fixed to the tube. To make the flow of the shielding gas a laminar flow, the filter was set up at the gas blow exit of the thin torch. Using the developed orbital welding equipments, several thousand joints of water-wall tubes of power generating boiler have been successfully welded at erection site.
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© 2006 一般社団法人日本機械学会
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