30000l cryogenic liquid oxygen tank

The welding process of liquid oxygen storage tank is as follows:
1. Material preparation: Use liquid oxygen storage tank plates that meet manufacturing standards, and cut the plates to corresponding sizes.
2. Weld seam preparation: passivate the plate to remove oxides and impurities on the surface, and then prepare for cutting and grinding.
3. Positioning and clamping: mark the plate to be welded, position it on the workbench and clamp it to ensure its stable position.
4. Welding equipment preparation: select the appropriate welding equipment, adjust, preheat and dry according to the process requirements.
5. Welding method selection: According to the design requirements, select suitable welding methods such as argon arc welding, manual arc welding, and submerged arc welding.
6. Welding operation: Carry out the corresponding welding between the plates according to the predetermined order, carry out preheating and heat preservation, control the current, voltage, speed and welding temperature, and ensure the welding quality.
7. Trimming process: After a certain amount of welding is completed, the weld seam is trimmed to remove rust and weld marks that may affect the storage of liquid oxygen.
8. Inspection and verification: conduct non-destructive and destructive inspections according to relevant requirements to confirm that the welding quality meets the standards.
9. Surface treatment: After the welding is completed, the surface is cleaned and polished to ensure the appearance and anti-corrosion performance.
10. Delivery and acceptance: transfer the liquid oxygen storage tank to relevant departments for acceptance to ensure its reliability and safety.