How do the several methods of wire harness soldering work?

I. How are the several methods of wire harness welding? The traditional welding process: melt welding, brazing, pressure welding 1. Melt welding is in the welding process will be heated to the melting condition of the interface of the workpiece, do not add pressure to complete the welding method. Melt welding, the heat source will be welded two workpiece interface agile heating and melting, forming a molten pool. The molten pool with the heat source to move forward, after cooling to form a continuous weld and the two workpieces connected to become one. Because of the welding, the wiring harness surface to fusion bracts combined to form a weld tumor, high resistance, greatly reducing the service life of the wiring harness. And in the welding process, if the atmosphere and high temperature direct contact with the molten pool, the oxygen in the atmosphere will oxidize the metal and various alloying elements. Atmospheric nitrogen, water vapor, etc. into the molten pool, but also in the subsequent cooling process in the weld constitute porosity, slag, cracks and other shortcomings, deterioration of the quality and function of the weld. 2. brazing is the use of metal materials than the melting point of the workpiece is lower than the brazing material for brazing material, the workpiece and brazing material will be heated to the higher than the melting point of the brazing material, lower than the melting point of the temperature of the workpiece, the use of liquid brazing material to wet the workpiece, filling the gap between the interface and workpiece to achieve the mutual diffusion of the atoms, so as to achieve the welding method. Diffusion, so as to realize the welding method. Welding due to the workpiece material, welding current and other different, after welding in the weld and heat-affected zone may produce overheating, embrittlement, quenching or softening phenomenon, but also make the performance of the weldment decline, deterioration of weldability. This will need to adjust the welding conditions, pre-welding on the weldment interface preheating, welding insulation and post-welding heat treatment can improve the weld quality of the weldment.3. Pressure welding is in the pressurized conditions, so that the two workpieces to achieve the inter-atomic bonding in the solid state, also known as solid-state welding. Commonly used pressure welding process is resistance welding, when the current through the two workpieces of the connection end, the place due to the resistance of the temperature rises, when heated to the plastic state, in the axial pressure under the action of the connection becomes one.

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