Automotive wire harness welding is an indispensable part of automobile manufacturing, and usually uses two main technologies: lap welding and form welding. In addition, crimping and ultrasonic welding are also the main production processes in automotive wire harness welding production.

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Lap welding is a common welding technology whose advantages include fast production speed and relatively simple equipment. However, there is a risk of metal stamping rebounding, especially under harsh working conditions, which is prone to oxidation and rust. These risks may lead to poor contact and affect the performance of the wire harness.

Form welding has super strong electrical connection characteristics, basically zero resistance, and is not sensitive to the risk of oxidation and rust under harsh working conditions. However, the equipment cost of form welding is relatively high, and the corresponding consumable parts are also relatively expensive.

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In addition, ultrasonic welding technology has gradually been widely used in automotive wire harness welding production. This technology improves the efficiency and quality of welding by utilizing the physical effects of ultrasonic vibrations to combine wire ends. Ultrasonic welding first became popular in Europe and the United States, benefiting from the development of foreign ultrasonic metal welding technology.

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Comprehensive comparison of two major welding technologies:

- Lap welding: fast production and simple equipment, but there is some risk of poor contact.

- Form welding: It has super strong electrical connection characteristics and is not affected by the risk of oxidation and rust, but the equipment cost is high and the consumable parts are expensive.

With the continuous development of automobile manufacturing technology, different welding technologies have been widely used in different scenarios, providing diversified options for the production of automobile wire harness welding.