There are four points that need to be paid attention to in the production process of automatic pipe welding machine:

1. First of all, the elongation of the pipe is longer than that of manual welding. Generally, 4-5mm is better. If it is too long, the penetration depth of the weld will be reduced, and the weld will not be beautiful; if it is too short, undercut and nozzle damage will occur. and other defects.
 
2. Secondly, the cleanliness of the tubes and tube sheets is required to be higher. It is best to clean the tube sheet with lye or organic solution, and the tube should be polished with sandpaper to see the metallic luster.
 
3. If the surface of the welding workpiece is not clean, pores will appear during welding, which will affect the welding quality.
 
4. The groove of the pipe should not be too large. Generally, the chamfer is ≤2mm, and 1mm is the best. If the groove is too large, it is easy to burn the pipe; if it is too small, the penetration depth is not enough.
 
At present, aluminum alloy pipes are mainly used in the following three fields:

1. Light steel industrial buildings are mostly single-story or 2-3-story main components, such as roof panels, wall panels, floor panels, beams, columns, purlins, supports and door and window frames;
 
2. Low-rise steel structure residences, generally below 3 floors, are buildings that require a lot of pipes;
 
3. Construction field and municipal construction, such as road isolation railings, advertising brackets, three-dimensional garages, supermarkets, farmers markets and various temporary buildings, etc.