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Matters needing attention in the production of automatic pipe welding machine
Release time:
2018-12-06 11:50
1. First of all, the elongation of the pipe is longer than that of manual welding, generally 4-5mm is preferred. Too long will reduce the penetration of the weld and the weld will not be beautiful. If it is too short, defects such as undercut and nozzle damage will occur.
1. First of all, the elongation of the pipe is longer than that of manual welding, generally 4-5mm is preferred. Too long will reduce the penetration of the weld and the weld will not be beautiful. If it is too short, defects such as undercut and nozzle damage will occur.
2. Secondly, the cleanliness of the tube and tube plate is higher. It is best to clean the tube plate with alkali or organic solution, and the tube should be polished with sand paper to see metallic luster.
3. If the surface of the welding workpiece is not clean, there will be pores during welding, which will affect the welding quality.
4. Pipe groove should not be too large, general chamfer ≤ 2mm, 1mm is the best. If the groove is too large, it is easy to burn the pipe, and if it is too small, it will lead to insufficient penetration.
At present, the cold-formed type is mainly used in the following three areas:
One is the main components of light steel industrial buildings (mostly single-storey, individual 2~3-storey), such as roof panels, wall panels, floor panels, beams, columns, purlins (roof, wall surfaces), supports and door and window frames, etc. The general steel consumption is about 40kg/m2, and 200000 tons of steel are required based on the annual completion area of 5 million square meters, including 150000 tons of cold-formed steel;
The second is the low-rise steel structure residence (generally less than 3 floors), which is a large-scale and wide-ranging building. For example, according to 1% of the 1.5 billion square meters of residential area completed annually in the whole country, 600000 tons of steel are needed, of which it is possible to reach 150000 tons of cold-formed steel;
The third is the cold-formed steel required by the construction field and municipal construction, such as road isolation railings, advertising brackets, three-dimensional garages, supermarkets, farmers' markets and various temporary buildings.
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