What are the standard specification requirements for automotive wire harness welding?

Automotive wiring harness welding is a very important process in automotive production, which mainly connects multiple wires by welding to form a complete wiring harness. In order to ensure the welding quality and the reliability of the wiring harness, a series of standards and specifications have been formulated. The following are the requirements of the standard specifications for automotive harness welding: 1. Requirements for welding materials The type and quality of welding materials are important factors affecting the quality of harness welding. In general, the welding materials used for harness welding shall meet the requirements of relevant standards, such as JIS Z 3211, AWS A5.18, etc. In addition, parameters such as the diameter of the welding wire, welding current and voltage also need to be adjusted according to the material and specifications of the harness. 2. Requirements for the connection point of the harness The connection point of the harness welding shall have good mechanical strength and electrical performance. Uniform welding shall be ensured at the connection point, and the size, height and protrusion of the welding spot shall also meet the standard requirements. At the same time, attention should be paid to maintaining the length and order of the wires at the connection points to ensure that the geometry and length of the harness meet the requirements. 3. Requirements of welding equipment: welding equipment needs to ensure the stability and reliability of the welding process. When selecting equipment, it is necessary to consider the requirements of welding process, such as voltage, current, welding time and other parameters. In addition, the equipment needs to have good mechanical stability and maintainability to ensure the controllability and consistency of the welding process. 4. Requirements for operators Welding operators need to receive professional training and have relevant certificates. They need to understand the performance and characteristics of welding materials, master the skills and operation specifications of welding process. At the same time, operators also need to have a good sense of safety and responsibility, comply with relevant safety regulations, and ensure the safety and reliability of the welding process. 5. Welding quality requirements Welding quality is an important indicator to evaluate the welding process of wiring harness. In the welding process, it is necessary to test the appearance quality, electrical performance, mechanical strength and other indicators of the welding point. At the same time, the size and geometric shape of the welding point also need to be tested to ensure that the size, height and protrusion of the welding point meet the standard requirements. 6. Acceptance criteria require that the harness shall be accepted after welding to ensure the welding quality and the reliability of the harness.

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