Requirements for the Telding of SSAW Steel Pipes
Date:2022-03-01View:515Tags:SSAW Steel Pipes
What are the requirements for ssaw steel pipe welding?
1) If the weld gap of ssaw steel pipe is too small, the proximity effect will increase, and the welding heat will be too large, causing the weld to burn or to form deep pits after the weld is squeezed and rolled, which affects the surface quality of the weld.
2) If the weld gap of ssaw steel pipe is too large, the proximity effect will be reduced, the eddy current heat will be insufficient, and the intergranular bonding of the weld will be poor, resulting in lack of fusion or cracking.
After the two edges of the tube blank are heated to the welding temperature, under the extrusion of the extrusion roller, the common metal grains are formed to penetrate and crystallize each other, and finally a firm weld is formed. If the extrusion force of the ssaw steel pipe is too small, the number of common crystals formed will be small, the strength of the weld metal will decrease, and cracking will occur after being stressed; if the extrusion force is too large, the molten metal will be squeezed out of the weld, It not only reduces the strength of the weld, but also produces a large number of internal and external burrs, and even causes weld defects.
Matters needing attention when welding ssaw steel pipes
1) The traces of welding are continuously reduced, so that it is difficult to see where there is welding. This requires the use of advanced welding equipment to complete, and the traces can be continuously reduced, so that the welding process can be greatly improved.
2) The edge welding should be fine, the flatness should be high, and the process should be reliable, especially in every detail of the ssaw steel pipe, there should be no burrs. Therefore, it can be seen that its technical level will be higher in the actual welding. In short, after strictly grasping the requirements of welding, it is very simple to improve its process standards.
3) Establish a complete welding process flow, and complete the welding according to the requirements. In this way, the overall quality of the ssaw steel pipe can be greatly improved, and the quality advantages brought by it will become more and more significant. Therefore, in order to become more and more popular in the market, the main points of welding must be grasped scientifically and reasonably.
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