Welding process issues for 200mm carbon steel plates
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Sea friends, does anyone know of any standards that provide a detailed description of the manufacturing processes for 200-millimeter thick carbon steel plates? Thank you. For mechanical products, it’s not necessarily necessary to follow container standards
Few people have probably seen one that is 200mm thick.
It is generally narrow-gap welding, with double-sided U-grooves, using specialized narrow-gap welding machines. Ensure proper preheating and postheating.
For 200-mm-thick carbon steel plates, V-grooves are generally used for fillet welds, with a groove angle of 45–55°; X-grooves are used for butt welds, with a groove angle of 25–35° (for single-sided plates). Efforts should be made to minimize the amount of filler metal used, so as to reduce welding stresses and deformations as much as possible. The preheating temperature before welding should be 100–150 degrees, and welding should be carried out in multiple layers and passes. After welding, it is important to maintain heat retention