Sliding Contacts and Welding Wire Feedability
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Accession number;04A0640431
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| Title;Sliding Contacts and Welding Wire Feedability |
| Author;
SHIMIZU HIROYUKI
(Kobe Steel, Ltd., JPN)
YOKOTA YASUYUKI
(Kobe Steel, Ltd., JPN)
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Journal Title;Kobe Steel Engineering Reports
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Journal Code:F0164A
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ISSN:0373-8868
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VOL.54;NO.2;PAGE.52-56(2004)
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| Figure&Table&Reference;FIG.12, TBL.1, REF.6 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Welding wire feed can be controlled by the sliding contacts between the copper tip and wire surface. For stable arc discharge, it is very important to balance the wire feed speed with the constant speed derived from the average welding current. In this study, the copper tip temperature, voltage drop, and contact resistance of the sliding contact were measured during actual welding. The sliding contact of non-Cu-coated solid wire has a liquid state that is independent of the welding current. Solidification discontinuity at the sliding contacts causes welding wire feeding resistance. One of the most important factors for sliding contact stabilization is the contact force between copper tip and wire. A contact force of more than 1 N is suitable for stabilizing sliding contacts for welding. (author abst.) |
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