What are the preventive measures for weld deformation of metal oil storage tank

In order to avoid weld deformation, the corresponding welding process should be used according to the type of steel used in the tank, such as the welding requirements and welding position of steel plate. Here are some preventive measures for weld deformation of metal oil storage tank.

1. The method of step back welding and skip welding are adopted
When the steel plate is thick and the weld is long, the arc stop plate can be set up, and many people can weld at the same time. This welding method can reduce the heat affected zone and avoid deformation. Similarly, for the welding of long weld of 6-12mm thick steel plate, the skip welding method can be used to disperse the heat of weld, avoid rabbit or reduce deformation.

2. Take rigid fixation measures
When welding metal oil storage tank, the weldment should be fixed rigidly. After welding, the weldment should be cooled to room temperature and then the rigid fixation should be removed, which can effectively prevent angular deformation and wave deformation.

3. Mechanical correction method
Although some measures have been taken, the welding deformation of metal oil storage tank is still inevitable, so it is necessary to take corrective measures for deformation compensation. Mechanical correction is to make the parts easy to deform in the welding process produce simple deformation through the force of machinery or other rigid materials, so as to restore the state before welding.