Wire Harness Welding Process Methods

Wire harness welding is commonly used in automobile manufacturing, and wire harness welding is a welding technology to solve automobile welding problems. Let's briefly introduce wire harness welding. You can get a preliminary understanding of wire harness welding through the following contents. Traditional wire harness welding processes are mainly welding, fiber welding and pressure welding. 1. Welding is a method in which the working interface is heated to a molten state during the welding process, and the welding is completed without applying pressure. When welding, the heat source rapidly heats up at the interface of the two workpieces to be welded, forming a molten glue. The molten pool moves forward with the heat source and cools to form a continuous weld that joins the two workpieces together. After welding, the welding surface of the wire harness is combined with the welding bract to form a welding seed, which has high resistance and greatly shortens the life of the wire harness. Furthermore, during melt welding, the atmosphere is in direct contact with a high-temperature molten pool, and oxygen in the atmosphere oxidizes metals and various alloying elements. After nitrogen, water vapor, etc. in the atmosphere enter the molten pool, in the subsequent cooling process, defects such as pores, residues, cracks, etc. will be formed in the welding, thus deteriorating the quality and performance of the welding.

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2. Brazing is a method of using metal materials lower than the melting point of the workpiece as solder, heating the workpiece and solder to a temperature higher than the melting point and lower than the melting point of the workpiece, using liquid solder to soak the workpiece, filling the interface gap, and diffusing the workpiece and atoms to achieve welding. The joint formed during welding that connects two connecting bodies is called welding. Both sides of the weld are subjected to welding heat during welding, and the composition and performance change. This area is referred to as the heat affected area. During welding, according to the workpiece material, welding material, welding current and other factors, overheating, embrittlement, hardening or softening phenomena may occur in the welding and heat-affected areas after welding, and the welding performance will decrease and the weldability will deteriorate. For this, welding conditions need to be adjusted. At the interface of butt welding before welding, the welding quality of welded parts can be improved by preheating, heat preservation during welding and heat treatment after welding. 3. Pressure welding refers to the atomic bonding of two workpieces in a solid state under pressure conditions. Also known as solid welding. The commonly used pressure welding process is resistance butt welding. When the current passes through the joint of two workpieces, the resistance is large, the temperature rises, and when heated to a plastic state, they are connected together by axial pressure. The general feature of various pressure welding methods is that the material is not filled during the welding process, but pressure is applied. Most pressure welding methods (such as diffusion welding, high frequency welding, cold pressing welding, etc.) have no melting process, so there is no problem of beneficial alloying elements burning and harmful elements invading welding such as melting welding, which simplifies the welding process and improves welding safety and hygiene conditions. In addition, since the heating temperature is lower than that of fusion welding and the heating time is short, the heat affected area is small. Many materials that are difficult to weld with fusion welding can often be press welded with connectors of the same strength as the masterbatch. Wire harness welding is mainly to weld wire harnesses. At present, the electronic industry uses more wire harnesses, so the electronic industry uses more. You can learn the knowledge of wire harness welding or some methods of wire harness welding, which is of great help to improve your skills.

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