EN 10155 S355J0WP weathering steel plate is a kind of low-alloy steel plate between ordinary steel plate and stainless steel plate with good quality and low price. When EN 10155 S355J0WP weathering steel plate contacts the climate surface, it will generate an oxide layer, thus preventing further corrosion, thus increasing the service life of EN 10155 S355J0WP weathering steel plate.
Here are several welding processes of EN 10155 S355J0WP weathering steel plate
1. Manual arc welding. The welding of EN 10155 S355J0WP weathering steel plate generally adopts manual arc welding process. The deposited metal of the electrode must have the corrosion resistance and comprehensive mechanical properties matching with the base metal, and at the same time, it must also have excellent process performance.
2. CO2 gas shielded welding. The welding process measures are similar to that of low carbon steel. First, clean all kinds of dirt and rust on the surface of EN 10155 S355J0WP weathering steel plate and the groove surface of welding joint. For the structure with large plate thickness and restraint, 100-150 degree preheating is required before welding.
When selecting welding material for EN 10155 S355J0WP weathering steel plate, besides meeting the strength requirements, it must match with the base metal in terms of corrosion resistance. Because the total content of alloy elements in EN 10155 S355J0WP weathering steel plate is small, its structure is ferrite and a small amount of pearlite, which has good plasticity and toughness, and its welding hardening tendency is very small. Generally, there is no preheating before welding and no heat treatment after welding.
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