First, the operating temperature should be controlled at 420 ℃ ~ 490 ℃; welding aids: Oxygen and city gas, liquefied petroleum gas or acetylene gas. Second, the metal surface prior to welding must paint, oxide, oil, etc. cleaned in order to ensure the welding quality. Because paint, oil is carbonized when heated, the metal surface to form a diaphragm, and the solder layer of the diaphragm which can not flow, and the solder can not be formed on the surface of a corroded connection. Third, copper and aluminum can be used when brazing overlapping manner with the aluminum brazing aluminum may be a lap or butt way. Under normal circumstances, you can simply put a piece onWelding Electrode Manufacturers another piece top. The metal in contact with the metal Stainless Steel Welding Rod required when brazing gap. If the component is more complex, you can use a dedicated fixtures. Brazing must ensure that they are in the correct position, but also to ensure that throughout the entire heating and cooling process can be always kept in the correct position. Fourth, the workpiece fixation, direct heating of the workpiece, the welding temperature is about 420 ℃ ~ 490 ℃, the metal components should be as uniform heating, all you need to do is carefully hand resting on the connection wire is heated the brazing temperature of the component part of the welding melt away, and these molten welding wire capillary action will be immediately absorbed and spread to the entire connection area. Solder flow is very strong, so you tend to get high-quality welds.