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Tool steel generally includes medium and low carbon steel tool steel, alloy steel and high-speed steel. In the high temperature of resistance brazing, their structure and properties are prone to annealing, oxidation and decarburization. Therefore, in order to less affect its hardness and wear resistance, we generally keep the brazing temperature consistent with the quenching temperature. Operation points 1.

Brass is a copper-zinc alloy. Zinc oxide and cuprous oxide are easily generated on the surface during resistance brazing at high temperatures. Although zinc oxide is relatively firmly bonded, it is relatively easy to remove with flux, so it does not affect the weldability. Operation points 1. Like pure copper, oxides, oil stains and other impurities on the surface of the workpiece must be removed before brazing.

Pure copper easily produces copper oxide and cuprous oxide during resistance brazing, but they are not difficult to remove with flux, so the weldability is good. Operation points 1. Remove oxides, oil stains and other debris on the surface of the workpiece before welding. 2. Soak in sulfuric acid cold water with a concentration of 5%-15%. 3. The solder can be made of silver.

Xinxing Welding's resistance brazing machine has few parameters and is easy to operate. There is only one important parameter, which is the welding current. It can be used together with the on-off switch to produce good products. Generally, large current heats up quickly, while small current heats up slowly. The on-off switch can control the power-on temperature rise and heat preservation. Naturally, the adjustment parameters only need to be set

If you want the strength and density of brazing to meet standards, the size of the gap must be controlled well. If the gap is too large, it will be difficult to fill it with solder, resulting in weak welding and poor strength. If the gap is too small, it is difficult for the solder to penetrate in, and it is easy to form incomplete welding penetration and pores and slag inclusions, resulting in low joint strength. The workpiece for resistance brazing is generally copper alloy

Hardware drawers are generally used in tool boxes, office desks, wardrobes, cabinet baskets, etc. The materials include mild steel, iron sheet, stainless steel, etc. Their connection length is generally relatively long, and they are still in the welding box. They need to be welded by a customized spot welder, which can also be called a long-arm cantilever spot welder. The price depends on your own expectations.