What are the welding characteristics of low carbon steel Skip Bins?

2022-09-08 00:59:12

The low carbon steel dustbin has low carbon content, low manganese and silicon content, and will not cause serious structural hardening or quenching structure due to welding under normal circumstances. This steel has excellent plasticity and impact toughness, and the plasticity and toughness of its welded joints are also extremely good. Generally, there is no need for preheating and post-heating during welding, and no special technological measures are required to obtain welded joints of satisfactory quality. Therefore, low carbon steel Skip Bin steel has excellent welding performance and is the best welding performance among all steels. kind.

Welding points of low carbon steel skip bins

(1) If the welding line energy is too large during submerged arc welding, the grains in the coarse-grained zone of the heat-affected zone will be too coarse, and even Widmanderin microstructure will be formed, thereby reducing the impact toughness and bending performance of the zone, resulting in impact toughness. And the bending performance is unqualified. Therefore, when using submerged arc welding, especially when welding thick plates, the welding should be performed strictly according to the welding line energy qualified by the welding process.

(2) When welding, welding thick or rigid welds under low temperature conditions on site, the tendency of cold cracks increases due to the faster cooling rate of the welded joints. In order to avoid welding cracks, measures such as preheating before welding should be taken. The low carbon steel dustbin has low carbon content, low manganese and silicon content, and will not cause serious structural hardening or quenching structure due to welding under normal circumstances. This steel has excellent plasticity and impact toughness, and the plasticity and toughness of its welded joints are also extremely good. Generally, there is no need for preheating and post-heating during welding, and no special technological measures are required to obtain welded joints of satisfactory quality. Therefore, low carbon steel Skip Bin steel has excellent welding performance and is the best welding performance among all steels. kind.