Terminal harness is the wiring component connecting various electrical equipment in the circuit, which is composed of insulating sheath, terminal blocks, wires and insulating wrapping materials. The quality and service life of terminal harness are closely related to the selection of harness materials. Therefore, after selectingTerminal harness processingWe must pay attention to ensure good quality from the source.

1、 For the selection of wire rod, the corresponding wire rod shall be selected according to the different use environment. For example, the ambient temperature around the automobile engine is high, and there are many corrosive gases and liquids. Therefore, high temperature, oil, vibration and friction resistant wire must be used; The wire on the automatic transmission must be resistant to high temperature and hydraulic oil, and its temperature stability is good; The sensor with weak signal shall use shielded wire, such as crankshaft position sensor, knock sensor, ABS wheel speed sensor, etc; The wire with high bending resistance shall be used for the interior wire of the door.

2、 Selection of plastic shell. The materials commonly used for plastic parts mainly include PA6, PA66, ABS, PBT, pp, etc. When designing the plug-in, different materials can be selected according to different requirements, and flame retardant or reinforcing materials can be added to the plastic according to the actual situation to achieve the purpose of reinforcement or flame retardant, such as adding glass fiber reinforcement.

3、 The material selection for terminal harness processing is mainly brass and bronze (the hardness of brass is slightly lower than that of bronze), of which brass accounts for a large proportion. In addition, different coatings can be selected according to different requirements, such as tin plating, gold plating, etc.

4、 Selection of other accessories. Harness accessories play the role of wear resistance, flame retardance, corrosion resistance, interference prevention, noise reduction and beautification, which are generally determined according to the working environment and space size.