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Homemade Spot Welding Machine with Power Control . How to Make a Spot Welder.

Step by step tutorial how to make a Spot Welder. Handfree mode Power control Use old microwave and vacuum cleaner Electric Circuit - https://drive.google.com/open?id=0B1O1fbFGJYSac0NzMUdwR1M0S2M Resistance spot welding (RSW) is a process in which contacting metal surfaces are joined by the heat obtained from resistance to electric current. Work-pieces are held together under pressure exerted by electrodes. Typically the sheets are in the 0.5 to 3 mm (0.020 to 0.118 in) thickness range. The process uses two shaped copper alloy electrodes to concentrate welding current into a small "spot" and to simultaneously clamp the sheets together. Forcing a large current through the spot will melt the metal and form the weld. The attractive feature of spot welding is that a lot of energy can be delivered to the spot in a very short time (approximately 10–100 milliseconds). That permits the welding to occur without excessive heating of the remainder of the sheet. The amount of heat (energy) delivered to the spot is determined by the resistance between the electrodes and the magnitude and duration of the current. The amount of energy is chosen to match the sheet's material pro
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05.02.2018 г.
Категории: Технологии
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