Welding characteristics of stainless steel clad plate

Welding Characteristics of Stainless Steel Composite Plate

Stainless steel composite plate is a plate composed of stainless steel plate and ordinary steel plate. It has the corrosion resistance of stainless steel and the physical properties of ordinary steel. It can be welded like ordinary steel, and the welding seam has good corrosion resistance. It is widely used in various industrial fields such as metallurgy, chemical industry, shipbuilding, power industry, instrumentation, etc. The following is a brief introduction to its welding characteristics.

Stainless steel composite plate welding characteristics include:

1. Due to the difference between the expansion coefficients of ordinary steel and stainless steel, the welding stress of the composite plate is larger than that of ordinary steel, so its structure should be properly arranged.

2. The composite plate should be heated to 220-260℃ before welding. The heat should be kept constant during welding.

3. It is necessary to use stainless steel welding materials as mate

Welding Characteristics of Stainless Steel Clad Plate

Stainless steel clad plate combines the properties of stainless steel and other materials. In the welding process of composite plate, considering the different characteristics of material, the welding process should be reasonably planned, and the various welding processes should be tailored to ensure the quality of welding and the satisfactory welding performance of the product.

1. Some precautions must be taken when welding stainless steel clad plate. First of all, ensure that the material of the base material of the stainless steel clad plate should be ferritic stainless steel with low core hardness before welding. Secondly, it is necessary to use layers for weld welding, and the welding sequence should be chosen reasonably; the the welding time should be controlled strictly, and the welding parameters should meet the requirements of the relevant national regulations.

2. Before the stainless steel clad plate is welded, the standby material quality should be checked. Generally, the welding deformation of stainless steel clad plate should be minimized. During operation, it is necessary to ensure that the welding rod is of high quality and not longer than 100mm. When welding stainless steel clad plate, the electrode angle should be 45°, and the direction of the extension should be the same on both sides.

3. It is necessary to pay special attention to the selection of welding equipment and internal control during the welding process of stainless steel clad plate. It is necessary to select welding power source with low power, low current and large waveform duty cycle. During the welding process of stainless steel clad plate, it is necessary to prevent the arc and molten pool from deviating from the parent plate, and it is necessary to ensure that the arc is perpendicular to the plate surface and the direction of extension is the same on both sides.

To sum up, in order to ensure the quality of stainless steel clad plate welding and obtain satisfactory welding performance, reasonable preparation is needed for the welding process of stainless steel clad plate, including reasonable selection of welding materials and machines, reasonable adjustment of parameters, strict inspection and skillful control of welding process.