![]() The size of the weld nugget increases rapidly with increasing welding current, but too high current will result in expulsions and electrode deteriorations. ![]() ![]() The welding current is the most important parameter in resistance welding which determines the heat generation by a power of square as shown in the formula. In order to have a systematic understanding of the resistance welding technology, we have carried out a lot of experimental tests and summarized the most influential parameters into the following eight types: However, when it runs in an actual welding process, there are numerous parameters, some researchers had identified more than 100, to influence the results of a resistance welding. Where I is the current passing through the metal combination, R is the resistance of the base metals and the contact interfaces, and t is the duration/time of the current flow.
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