《Table 3 Test conditions for electrode lifetime》

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《Properties of Baosteel inorganic-lubricant-coated galvanized steel sheet for automotive body panels》

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Under the test conditions listed in Table 1，the welding performance of GI-T steel sheets was tested with different weight of surface lubricating film.Table 2 lists the results obtained in the optimum welding current test，which show that the lubricating film has a certain effect on the welding current range of the steel sheet.However，this effect can be eliminated or reduced by controlling the lubrication film.In practical applications，the appropriate welding parameters must be selected according to the specific production conditions.In the laser welding process，the test results also show no difference between the GI-T and GI steel sheets.