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发明名称
复合焊接坡口
摘要
一种复合焊接坡口,用于石油天然气长输管道的全自动和半自动焊接,属于管道焊接技术领域,本实用新型改变了现有技术的坡口开的较大,焊接面积相应增大,焊接一个焊口需要更多的焊丝和时间,以及容易产生焊根侧壁未熔焊接的问题,本实用新型采用的焊口是下部为双U形坡口,上部为窄间隙的V形坡口的复合焊接坡口,窄间隙的焊接坡口可以有效的加快焊接速度和节约焊接材料,也可以保证标准规定的焊接角,克服焊根的侧壁未熔焊接的缺陷,同时,由于其角度小可以在大型工程中有效的减少焊接成本和缩短工期。
申请公布号
CN2758002Y
申请公布日期
2006.02.15
申请号
CN200420061305.5
申请日期
2004.09.20
申请人
四川石油管理局
发明人
张成伟;周勇;吴立彬;王学军;朱洪亮
分类号
B23K33/00(2006.01)
主分类号
B23K33/00(2006.01)
代理机构
代理人
主权项
1.一种复合焊接坡口,包括上部焊口和下部焊口,其特征在于:a.所述上部焊口为V形坡口结构,开口度为5°-11°;b.所述下部焊口为双U形复合坡口结构,其曲率半径分别是:上为R3.2mm,下为R2.4mm。
地址
610051四川省成都市一号桥石油局专利办公室
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