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11. 发明公开

EP2794172A1 CONTACT TIP FOR USE IN GAS METAL-ARC WELDING 有权
标题翻译： KONTAKTSPITZE ZUR VERWENDUNG BEIM GAS-METALL-LICHTBOGENSCHWEISSEN
公开(公告)号：EP2794172A1
公开(公告)日：2014-10-29
申请号：EP11878327.3
申请日：2011-12-20
申请人： ESAB AB
发明人： RAUDSEPP, Hannes
IPC分类号： B23K9/12
CPC分类号： B23K9/28 , B23K9/123 , B23K9/173 , B23K9/26
摘要： A contact tip (1) for gas metal-arc welding comprising: - A body (3) of a metal material with a tubular base portion (4) and two or more fingers (5a, 5b) extending in the axial direction from a front end of the base portion; - At least one wire-feed conduit (7) extending axially through the body, in which a welding wire is to be received and fed; - slots (10a, 10b) arranged between the fingers in order to space these apart, and - A spring means (11) surrounding the fingers and exerting a radially acting spring force on the fingers of such strength that the fingers, when cool, are kept spaced apart, such that no pressure will be exerted on the casing surface of a welding wire introduced in the wire-feed conduit, and when heated to a temperature above the softening temperature of the metal material, are compressed by the spring force radially inward in order to exert pressure on the casing surface of a welding wire received in the wire-feed conduit.
摘要翻译：一种用于气体金属电弧焊接的接触尖端（1），包括：具有管状基部（4）的金属材料的主体（3）和从轴向方向从前端延伸的两个或更多个指状物（5a，5b）的基部; 至少一个电线馈送导管（7），其轴向延伸通过本体，其中焊丝将被接收和馈送; 布置在指状物之间的狭槽（10a，10b），以便使它们分开;以及弹簧装置（11），其围绕指状物并且在手指上施加径向作用的弹簧力，使得手指在冷却时保持间隔使得不会对引入导线管的焊丝的外壳表面施加压力，当被加热到高于金属材料的软化温度的温度时，由弹簧力沿径向向内按顺序压缩对接收在送丝管道中的焊丝的套管表面施加压力。

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