What are the welding precautions for Q345B H section steel

As a common material in construction engineering, the importance of steel is self-evident. Steel is very easy to process and very easy to design, especially Q345B H section steel, which can be used in various fields and is favored by more and more manufacturers. What should we pay attention to when welding Q345B H section steel?

Starting from the welding method, there are generally two methods for welding, one is arc welding, the other is submerged arc welding. For Q345B H section steel, automatic submerged arc welding is the most suitable method. When welding, anchor should be used to clamp the wing plates at both ends of H steel, which can play a fixed role and prevent deformation of steel. Simple protection shall be carried out at the welding position, and the welding position shall be smaller, so as to make the appearance more beautiful.

Before welding Q345B H section steel, the preparation work should also be done well. First, determine the direction and position of welding feet, and then observe the deformation of steel to determine which side to start. The use of flux and welding wire is also very exquisite. When repairing welding, acid electrode should be used, and gas shielded welding should be used. It should be more beautiful, safer and has stronger welding effect. When welding, the length of the cover plate should also be noted, which is usually larger than 1.5cm, so that no cracks will be produced, meeting the requirements of safety production.