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Selecting the most suitable welding machine Welding is a straightforward idea that needs special skills and the correct equipment. The aim is to join two pieces of material usually metals or thermoplastics together by heating and letting their surfaces, sometimes applying filler to the gap between them and pushing the surfaces together until they merge. Welding is important for vehicle and machinery construction and repair, in home maintenance, as a hobby and to create fine art. Whether you want to repair a cherished old cast iron saucepan or a car engine, the correct equipment is vital.
Decide on job The first task is to decide precisely what kind if surfaces you need to join together and to measure their thicknesses. Do you need the weld to penetrate the material and will you paint over the joint once it has cooled? The answers to these questions will help you to decode on the energy source and how to choose the welding machine. Energy sources may be electric arc, electron beams, gas flames, lasers, resistance or ultrasound.