Deformation during plate welding is a common problem, which may lead to quality problems such as inaccurate product dimensions and shape deformation. This article will introduce in detail the causes of deformation during plate welding and propose corresponding solutions to help readers better deal with this problem.

1. Causes of deformation:

a. Welding thermal stress: During the welding process, the welding area is affected by heat, causing temperature gradients and thermal stress, causing deformation of the plate.

b. Insufficient plate stiffness: Some plates have low stiffness and are prone to bending or warping during the welding process, resulting in deformation.

c. Unbalanced welding: During the welding process, the heat-affected area of the weld is uneven, causing local deformation of the plate.

2. Solution:

a. Use an appropriate welding sequence: During the plate welding process, using an appropriate welding sequence can reduce the impact of welding thermal stress on the plate and reduce deformation.

b. Use preheating and control the welding temperature: For materials with low plate stiffness, preheating can be used to increase the temperature of the plate and reduce thermal deformation during the welding process. At the same time, control the welding temperature and welding speed to avoid deformation caused by overheating of the plate.

c. Use compensation welding: For large-size plates, compensation welding can be used to offset the deformation during the welding process by setting compensation welds on the plate.

d. Use auxiliary fixtures and supports: During the welding process, the use of auxiliary fixtures and supports can fix the plate and reduce the occurrence of deformation.

3. Summary:

During the plate welding process, deformation is a common problem that may affect the quality and dimensional accuracy of the product. In order to reduce the occurrence of deformation, a series of effective measures need to be taken, such as using appropriate welding sequences, preheating and controlling welding temperature, using compensation welding and auxiliary fixtures, etc., to ensure product quality and dimensional accuracy after welding.