For example, the number of solder joints of Duke Xintiantian Teana is only about 2 100, but laser welding on the roof can reduce many solder joints. There are almost 200, and a Fiat FIXIANG has 5,000 solder joints, indicating that the welding is firm and reliable, so you won't see a serious accident in FIXIANG, and you may see half the joy. This is not absolute, in fact, the key lies in the body structure.
It's hard to say the design principle of the solder joints of the body in white, but generally speaking, the distance between the solder joints in the straight section is about 70, and that in the non-straight section is generally 35-50, and the welding distance will be closer where the welding strength is required. However, considering the possible welding shunt, the instability of welding should be considered when arranging solder joints, so the closer it is, the better the layout of solder joints can be, and the better effect can be obtained. Generally speaking, a three-layer welded joint is better than a two-layer welded joint. Generally, the application principle of solder joint should not exceed 5mm, and the thickness ratio of solder plate should not exceed 1:3. If it exceeds this value, the nugget will not be in the center of the solder joint, or even weld through the thin plate. The thickness of three-layer welding shall not exceed 1:3.
Pure hand tour, you can continue to ask questions if you have any questions.