21 May,2024
Tip：When welding aluminum pipes, the surface always turns black, what should I do?
Porosity is common in aluminum welding.
There are a certain amount of pores in the base metal and the welding wire, so it is necessary to avoid large pores during welding and ensure that the pores do not exceed the standard. When the humidity exceeds 80℅, welding must be stopped. The probability of pores exceeding the standard is also 80℅, and it is easy to return the piece.
Sometimes there is black dust stuck to the welding seam, what should I do?
In fact, the tungsten electrode is contaminated, or the tungsten electrode touches the molten pool or the welding wire and sticks to the aluminum. Only after the tungsten electrode is cleaned can we continue.
At this time, we only need to adjust the cleaning width of the welding machine to the bottom, the current is basically around 200, and start arc welding on a piece of scrap aluminum. In just a few seconds, the tungsten electrode will form a small ball. If we want to weld the aluminum well, Small round balls are a must-have product.
Compared with aluminum welding and stainless steel, I prefer aluminum welding. It is not as troublesome as stainless steel, which still has to swing. Aluminum welding is easy, and the welding gun basically does not swing. This kind of aluminum pipe with a lining ring is just a fillet weld, so welding is not that troublesome.
The current is adjusted appropriately. If you feel that you can control the molten pool, that is the best current. The performance of each welding machine is different, the current will be different, and the flexibility of the arc will also be different.
Relevant News
