There is a small hole in the aluminum alloy rim, which can be filled with iron alloy. Only the power of the soldering iron should be enough, otherwise it will not be welded. The power of the soldering iron should be at least 100 watt. When punching a wrong hole in an aluminum alloy product, the size of the hole is relatively small, which can be filled with the same plate, and the surface can be painted with a similar color. If the hole is slightly larger, it can be filled with scraps and painted with a similar color.