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AssigneeBabcock-Hitachi Kabushiki Kaisha
InventorsKatsuyoshi Hori, Nobuwo Nakazawa, Yosiaki Matsumura, Yukio Hosono, Tetsuji Terada, Toshiharu Nagashima, Yuji Futami, Toshiaki Takuwa
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An excellent welding tip in the feed stability of a wire, in the release capacity of foreign matter, and in the stability of current control, and a process for manufacturing such a tip economically, is achieved in accordance with a sectional shape of a guide hole opened and provided to a welding tip. The sectional shape is derived by forming a wire in a passable non-circular shape. The sectional shape of the guide hole may be a polygonal or elliptic shape, or approximately so. In the case of making the sectional shape of the guide hole polygonal, it is more preferable to make it a polygon circumscribing on a circle, for example, such a polygon circumscribing on a larger circle than the outer diameter of the wire to be inserted into the guide hole by 0.02-0.20 mm in diameter. Specifically, it is preferable to arrange the sectional shape as a triangle.
A welding wire-guiding tip having a guide hole for a wire having a circular cross section, wherein said guide hole has a cross-sectional shape that is exactly three-sided, the cross-section being taken perpendicular to the guide hole and looking along the axis of the guide hole.
In a welding device having a welding wire-guiding tip, the improvement wherein the welding wire-guiding tip has a guide hole for receiving a welding wire of circular cross-section, and wherein said sectional guide hole has a cross-sectional shape of exactly thee sides, the cross-section being taken perpendicular to the guide hole and looking along the axis of the guide hole.
A welding wire-guiding tip manufactured by a process comprising the following steps:
A welding wire-guiding tip manufactured by a process comprising the following steps:
A welding wire-guiding tip having a guide hole for a wire having a circular cross section, wherein said guide hole has a cross-sectional shape that is generally triangular, the cross-section being taken perpendicular to the axis of the guide hole and looking along the axis of the guide hole, wherein the generally triangular cross-sectional shape circumscribes a circle having a larger diameter than the outer diameter of the wire to be inserted into said guide hole by 0.02-0.20 mm.
In a welding device having a welding wire-guiding tip, the improvement wherein the welding wire-guiding tip has a guide hole for receiving a welding wire of circular cross-section, wherein said sectional guide hole has a generally triangular cross-sectional shape, the cross-section being taken perpendicular to the axis of the guide hole and looking along the axis of the guide hole, and wherein the generally triangular cross-section of the guide hole circumscribes a circle having a larger diameter than the outer diameter of the wire to be inserted into said guide hole by 0.02-0.20 mm.
A welding wire-guiding tip assembly, comprising:
In a welding device having a welding wire-guiding tip assembly, the improvement wherein the welding wire-guiding tip assembly comprises:
Dependencies are inferred from the claim text.