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Stainless steel spot welding heat balance and heat introduction

Updatetime:2018-01-26 18:05:12

Stainless steel spot welding spot welding, the heat generated by only a small part of the formation of solder joints, the greater part of the adjacent material due to conduction or radiation lost, the heat balance equation:

Among them: the formation of nugget heat loss of heat The effective heat Q1 depends on the thermal properties of the metal and the amount of molten metal, regardless of the welding conditions used. Q1 = 10% -30% Q, metal with good thermal conductivity (aluminum, copper alloy, etc.) removal limit; high resistivity, poor thermal conductivity of metals (stainless steel, superalloy, etc.) cap.

The loss of heat Q2 mainly consists of the heat conducted through the electrode (30% -50% Q) and the heat conducted through the work piece (around 20% Q). Radiation to the atmosphere of the heat about 5%.


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