30A/50A/100A Spot Welding Hand Held Pulse Spot Weld Machine Laser Welder Jewelry. Before using the welder, check that the power supply is compatible with the voltage used Connect the corresponding polarity screw to the output wire of the welding machine (tighten the nut when the output wire is connected to the output pole) When working, clamp the workpiece with the clamp on the black output wire, close to the tungsten pin, the distance depends on the size and shape of the workpiece, generally the distance between the tungsten pin and the workpiece is between 0.5 and 1 mm After setting the welding position, tap the foot switch and a high temperature arc will be generated between the workpiece and the tungsten needle to instantly fuse the workpiece. The discharge end of the tungsten needle must be kept sharp before and during use to keep it in a good discharge state.The output pulse current increases and vice versa For gold or silver necklaces/bracelets, the 30A welding machine can weld up to 1mm in diameter with multiple cooling fans, the 50A can weld up to 2mm, the 100A can weld all necklaces, K gold, platinum, stainless steel rings or copper, etc. Because of the high melting point. 30A/50A can not weld too thick, so if long-term welding within 1 mm, 30A/50A/100 can be, if sometimes welding thicker, 100A is recommended.
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