Spot Resistance Welding Electrodes

The resistance spot welding electrode is used for welding the crossed steel bars by a spot welding machine, and it can be formed into a steel mesh or a skeleton instead of manual binding.

The composition of the resistance spot welding machine electrode, the basic composition of an integral spot welding electrode can be divided into three parts: 1, the electrode head; 2, the rod; 3, the tail; and the split electrode only includes two parts.

The electrode head is the part where the electrode is in contact with the weldment for welding. In the welding process parameters, the electrode diameter refers to the working diameter of the contact part. The performance and shape of the head material have a great influence on the strength and surface state of the solder joint. Impact.

The rod is the basis of the electrode. Usually, the diameter of the electrode body is the diameter of the rod. In electrode processing, it is referred to as the electrode diameter, which is the basic size of the electrode. In addition to the circular rod, the electrode rod also has a hexagonal rod. The length of the part depends on the needs of the welding process.

The electrode tail is the contact part between the electrode and the handle, or directly with the electrode arm. The electrode tail should have a certain machining accuracy to reduce contact resistance, ensure smooth transmission of welding current and electrode force, and be sealed without leakage.

Resistance spot welding technology uses the heat generated when an electric current passes through a resistor to melt and connect two conductive metal parts. The electrodes are mainly composed of pure tungsten, molybdenum, and their alloys. The two electrodes compact the parts to be welded together and use a strong current to flow through the contact surface of the plate to generate resistance heat, forming a molten material pit at the welding point. Spot welding utilizes higher current and higher pressure to allow a large amount of heat to concentrate on the weld in a short period of time without the rest of the sheet being overheated. Usually, the sheet thickness is between 0.3mm and 3mm.

The electrodes produced by Magotan have been deeply densified, with higher density and a more uniform internal structure, and their service life is significantly better than that of electrodes without deep densification. It has been widely used in various precision machinery manufacturing and welding technology, especially suitable for welding copper and other materials with high conductivity, such as welding copper wire, copper sheet, copper tab, copper braided wire, copper foil, and other applications. The product has relatively high electrical conductivity and high-temperature stability, which can ensure the operation of the fully automatic production line, and is suitable for spot welding, rolling welding, projection welding, upsetting and pressure welding, and other processes.

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