The difference between a projection welder and a spot welder is that the projection welder workpiece needs to be pre-manufactured into a projection block of a certain shape and size. The size of the current path area during welding is determined by the size of the bump, not by the size on the electric extreme surface like spot welding. As a result, the size of the end face of the projection weld electrode can be increased and the current density in the electrode can be reduced, so that higher strength and lower conductivity can be selected.

Projection welding is mainly used for welding low carbon steel and alloy steel stamping parts.There are many types of projection welding.In addition to plate projection welding, there are nut and screw projection welding, line cross projection welding, tube projection welding and T plate projection welding.

The most suitable thickness for plate projection welding is 0.5 ~ 4mm.When welding thin plates, the projection design requirements are very strict, and the welder is required to have excellent follow.Therefore, spot welding is more suitable for plate thickness less than 0.25mm.

Guangdong Hwashi Technology INC. is specialized in the production of series resistance welding machine (spot welding, touch welding, seam welding, row welding, butt welding) and industrial robots (six axis mechanical arm, welding robot, and loading robot, transfer robot, grinding and polishing robot, painting robot, glue robot) research and development, design, production, sales, service as one of the high-tech enterprises.Products are mainly used in household appliances, kitchen appliances, lighting, hardware tools, electrical and electrical, instrumentation, 3C electronic industry, auto and motorcycle parts, military aviation and other fields.According to customer needs, we can develop and customize various welding machines, automatic welding equipment and welding assembly lines, assembly lines, etc., to provide appropriate overall automation solutions for enterprise transformation and upgrading, and help enterprises quickly realize the service of transformation and upgrading from traditional production mode to middle and high-end production mode.