Sacrificial resistance weld electrode
AssigneeGreatbatch Ltd.
InventorsXiangyang Dai, Robert D. Miller
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Abstract
An electrode used for resistance welding is described. In an embodiment, the electrode comprises a two-part construction having an electrode tip portion that is removably contactable to an electrode base. The electrode is constructed such that the respective base and electrode tip portions may be composed of metals having differing melting temperatures, in particular a significant difference in melting temperature of at least 100° C. or more. The electrode is preferably constructed so that the electrode tip portion can be easily removed, thereby leaving the base portion within the fixture.
Claims15
A welding electrode, comprising:
- a) a base comprised of a first electrically conductive material, wherein the base comprises a base sidewall extending from a base proximal end to a base distal end;
- b) an electrode bar comprising molybdenum, wherein the electrode bar comprising molybdenum is removably connected to the base and comprises an electrode bar sidewall having a height extending from an electrode bar proximal end to an electrode bar distal end;
- and
- c) a plurality of grooves spaced along the electrode bar comprising molybdenum, each groove extending inwardly from the electrode bar distal end part-way through the electrode bar height toward the electrode bar proximal end, wherein each groove:
- i) resides between spaced apart first and second planar portions of the electrode bar distal end, and
- ii) extends to opposed open groove ends at spaced apart locations at the electrode bar sidewall, and
- d) wherein the base is configured for electrical connection to an electrical power supply, and when the base is connected to the electrode bar comprising molybdenum, the electrode bar comprising molybdenum is conductively connected to the base.
A welding electrode, comprising:
- a) a base comprised of a first electrically conductive material selected from the group consisting of copper, aluminum, stainless steel, gold, silver, palladium, alloys, and mixtures thereof;
- b) an electrode bar comprising molybdenum, wherein the electrode bar comprising molybdenum is removably connected to the base and comprises a sidewall having a height extending from an electrode bar proximal end to an electrode bar distal end;
- and
- c) a plurality of V-shaped grooves spaced along the electrode bar comprising molybdenum, each V-shaped groove extending inwardly from the electrode bar distal end part-way through the electrode bar height toward the electrode bar proximal end, wherein each V-shaped groove:
- i) resides between spaced apart first and second planar portions of the electrode bar distal end, and
- ii) extends to opposed open groove ends at spaced apart location at the electrode bar sidewall, and
- d) wherein the base is configured for electrical connection to an electrical power supply, and when the base is connected to the electrode bar comprising molybdenum, the electrode bar comprising molybdenum is conductively connected to the base.
Dependencies are inferred from the claim text.