As the requirements of today's applications continue to increase, their requirements for wiring are gradually approaching the limit of wiring, so the accuracy test of test equipment is becoming more and more important. Inaccurate or impractical test equipment will cause serious damage to the normal operation of the entire system in the future.
The wiring harness product process design is the input and output process of the product. The whole design scheme is developed around quality, cost and operability, and finally meets various requirements of product characteristics, and at the same time controls manufacturing costs. When the process design is unfolded, first consider the product quality, ensure that the joint positions do not overlap, but large, not designed on the branch; secondly consider the operability of the workers, minimize the difficulty of work; finally, according to the principle of nearby iron, Try to save wire. Determine the position of the centralized crimping point inside the wire harness of the ground wire, the centralized connection mode of the internal connection point, and formulate technical requirements. Due to the branch position, size, and electrical functions, location and number of different points in different automotive wiring harnesses, the internal connection of the ground wire is diversified.
With the increase of the functions of automobiles, the universal application of electronic control technology, coupled with the increasing requirements for the safety, comfort and economy of automobiles, the more and more electrical appliances and electrical functions on automobiles; There are more and more electrical components and more and more wires; the wiring harness connecting the various electrical components is becoming more and more complicated and the wiring harness of the automobile becomes thicker and heavier. Therefore, advanced cars have introduced bus configurations using multiplex systems.
The tools need to be fully prepared, and the construction personnel should be familiar with the use, inspection and precautions of various tools. Prepare the required heat shrinkable materials and supporting materials, check whether the materials are qualified, and determine the type of heat shrinkable materials used according to the wire harness structure and specifications. The construction site should be kept clean and dry, and safety technical measures should be taken when using the blowtorch. The quality of the wire harness core crimping directly affects the service life of the connector and the safe operation of the wire harness.
Filled with inorganic flame retardants, the mechanical strength and elongation at break are much worse than non-flame retardant polyolefin sheathing materials. The flame retardant polyolefin sheathing material has low mechanical strength, and the commonly used flame retardant polyolefin sheathing material has an oxygen index of 25 - 28. The flame retardant effect is not very good, and it is only suitable for applications where the temperature is low, the movement or bending is appropriate, and the flame retardancy requirements are not too high, and it is not suitable for application in an electronic wire harness requiring high flame retardancy. The halogen-free, low-smoke flame-retardant polyolefin sheathing material has better flame retardancy and charcoality during combustion, and is suitable for use in an electron beam bundle having no halogen, low smoke and high flame retardant properties.
