During the welding of color-coated plates, bubbles may sometimes appear due to external factors. This phenomenon can result in weak welds and affect the aesthetic appearance. Therefore, we must try to avoid this situation during welding. So, what causes this phenomenon? Only by identifying the root cause can we better resolve it. Below is an explanation for everyone.

1. If the surface of the weld seam on the color-coated plate is not cleaned properly, it can easily lead to the formation of bubbles, such as due to the presence of oil stains or moisture. To address this, we can clean the surface of the weld seam before welding.

2. Impure shielding gas can also cause bubbles to form. To solve this issue, 99.99% argon can be used.

3. If the end of the welding wire is exposed to the air, bubbles may also appear. Therefore, during the welding of color-coated plates, the end of the welding wire should always remain under the protection of inert gas.

The three methods described above can effectively prevent bubble formation during the welding of color-coated plates. For existing bubbles, they can be directly removed using an angle grinder. In future operations, you can refer to the content introduced in this article, which we believe will effectively resolve your issues.