The welding of automotive dashboards typically involves the following aspects:

1. Circuit Board Welding: Electronic components on automotive dashboards are usually connected to circuit boards. Welding is used to secure and connect electronic components such as integrated circuits, resistors, capacitors, etc. Common welding methods include Surface Mount Technology (SMT) and through-hole welding.

2. Harness Welding: Automotive dashboards contain numerous wires and cables, which require welding to connect to electronic control units and other components. Harness welding involves connecting wires to electronic components or connectors and ensuring robust electrical connections.

3. Manual Welding: Some assembly details may require manual welding. For example, certain special sensors or control devices may necessitate manual welding of wires or cables to achieve proper connections.

4. Surface Treatment Welding: During the production of automotive dashboards, metal surfaces sometimes require pre-welding treatment. This may include steps such as cleaning, removing oxides, applying flux, etc., to ensure the quality and reliability of the weld points.

Overall, the welding work for automotive dashboards primarily involves steps such as circuit board welding, harness welding, manual welding, and surface treatment welding. The purpose of these welding tasks is to ensure reliable electrical connections, structural integrity, and compliance with various functional and safety requirements during vehicle operation.