Introduction: The projection welding machine is mainly used for welding the bumps on the board in advance. The spot welding machine directly welds the two raw material boards together. This is relatively simple, so why do you want to bump the bumps to solder? Because there are the following problem:
First, the material is very thick, not easy to weld, so that with bumps like welding, the current requirements are not high;
Second, the high efficiency of bump welding, welding surface effect is good, you can punch dozens of bumps, one-time welding, so much faster. All belong to resistance welding, each has its own advantages and disadvantages, and it is necessary to treat specific issues in order to achieve the desired goal.
Simply speaking, spot welding machines use welding heads to directly weld workpieces, usually a flat head, a pointed tip, and a nugget formed on the workpiece during welding. The projection welder is used to punch bumps in advance in the workpiece, generally two planar electrode tips.
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