Spot Welding Machine

The spot welding machine is used in spot welding process. Spot welding is a type of resistance welding and is a very common method used for welding various sheet metals.

The welding processes involves joining two or more metal parts together in a confined area by the application of heat and pressure.

Working Principle
The spot welding machine makes use of properly shaped copper alloy electrodes in order to apply pressure and carry electrical current through the workpieces. Heat is generated mainly at the merging point between two sheets. This causes the material being welded to melt gradually, thereby forming a molten bath, known as the weld mass. The molten bath is held through the pressure applied by the electrode tip and the encircling solid metal. In this type of welding process, no filler metal is used.

Uses & Applications
There are many different uses of spot welding machines. Some of the areas where it finds application are:

• Automobile industry
• Automotive manufacturing
• Metal working
• Shipbuilding
• Fabrication
• Casting