Terminal wire harness is a wiring component that connects various electrical appliances in the circuit, and is composed of an insulating sheath, a terminal, a wire, and an insulating wrapping material. The quality and service life of terminal wiring harness are closely related to the selection of the wiring harness material. Therefore, when selecting the wiring harness material, we need take the first step of quality from the source.
Selection of terminal wire
Terminal wire select the corresponding wire according to different use environment. For example, the surrounding temperature of the car engine is high, and there are many corrosive gases and liquids, therefore, we must use high temperature resistant, oil resistant, vibration resistant, friction resistant wires; The wire on the automatic transmission must be resistant to high temperature and hydraulic oil, and its temperature stability is better. We use shielded wires for weak signal sensors, such as crankshaft position sensor and knock sensor, ABS wheel speed sensor, etc.
Selection of terminal wire housing
Commonly used materials of terminal wire housing are mainly PA6, PA66, ABS, PBT, pp, etc. When designing the plug-in, different materials can be selected according to different needs, and flame retardant or reinforcement can be added to the plastic according to the actual situation to achieve the purpose of reinforcement or flame retardancy, such as adding glass fiber reinforcement.
Terminal materials are mainly brass and bronze (brass is slightly lower in hardness than bronze), of which brass accounts for a larger proportion. In addition, different plating layers can be selected according to different requirements, such as tin plating, gold plating, etc.
Other auxiliary materials for terminal wires harness play the role of wear resistance, flame retardant, corrosion prevention, interference prevention, noise reduction, and beautification of appearance. Generally, auxiliary materials are selected according to the working environment and the size of the space.