Operation method to reduce welding thermal deformation of steel structure

Operation method to reduce welding thermal deformation of steel structure

(1) Fixture fixing method: Use a rigid fixture to clamp the combined weldment, control the deformation with a forced force, and then perform welding. This method is called the fixture fixing method.

The expansion and contraction forces generated inside the weldment during welding are limited by the force of the fixture, which can significantly reduce deformation. However, this method has relatively large internal stress inside the weldment, and it is not suitable to use this method for components that require less internal stress in the weldment.

(2) Anti-deformation method: Before the component is welded, it should be judged according to the condition of the metal component to be welded. When cooling after welding, the direction of deformation and the amount of shrinkage, the weldment is bent or inclined in the opposite direction in advance, after welding, due to its own shrinkage and deformation, it just returns to the predetermined shape and position. It can achieve the purpose of preventing welding deformation and reducing welding stress.

(3) Adopt positioning control method: Before the component is welded, many welding spots are used to locate the welded part or around, and heavy objects can also be pressed on both sides of the weld. This method is called positioning control method.

(4) Welding sequence method: The correct arrangement of the welding sequence is an effective method to prevent welding deformation. The law of welding deformation is that the deformation caused by one weld is large, and the deformation caused by each weld generally cannot cancel each other out of the deformation direction, and the sum is the same as the deformation direction caused by the previous weld.

Guangxi steel structure processing light steel structure is an ideal way to realize green buildings

Lightweight steel structure has light weight, fast construction speed, controllable cost, good performance, energy saving, material saving, water saving, land saving and earthquake resistance. It has little impact on the urban environment and can be reused (my country's annual construction waste is as high as 400 million tons , Has accounted for 40% of the total urban waste), therefore, light steel structure is an ideal way to achieve green buildings.

Guangxi steel structure processing prompt content source network, if there is any infringement, please contact the administrator to delete, thank you!