Projection Welding Machines

Projection welding is a resistance welding process. Projections are made on any one of the components before welding. The weld area and location is defined before welding in projection welding unlike in spot welding where weld area depends on the shape of the electrodes. After passing the weld current for specific time, the projection collapses under the electrode pressure and the parts are welded together.

The advantages of projection welding are that multiple projections can be welded in one shot, flat electrodes are required for welding, minimum dents and marks after welding etc.

Advantages

• Large scale reduction in power (Kva) demand as compared to conventional resistance welding machines. For example our 10Kva CD projection welder can weld components, which are welded on 50 to 75 Kva conventional A.C. projection welder.
• No water-cooling required for electrodes due to very short weld times. Cost of manufacturing electrodes is reduced.
• Negligible blackening and distortion at weld joint. Excellent aesthetics. No mark on the other side of the weld.
• No effect of normal voltage fluctuation on weld quality. Machine will not discharge (weld) unless capacitors are charged to the pre-set voltage.
• It's a three-phase machine and it can work on Generator set.
• Welding near heat sensitive parts is possible.
• Welding of similar and dissimilar metals possible.
• Installation and operating cost of the machine is very very less. The more you weld, the more you save.