Issues regarding the shielded metal arc welding of the equipment cylinder
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Recently, a friend’s project site is working on a desulfurization and acid production project. In order to meet the deadline, the installation team used GMAW instead of manual arc welding during the construction of the furnace cylinder. It’s really hard to understand such an approach. Everyone, please share your opinions: 1. Is this feasible? 2. What are the potential risks or consequences? 3. How should it be handled? 4. How is welding quality and welding processes typically controlled?
I really want to learn it*; please let me know, teachers who are aware of this!
Is it GMAW with solid wire or GMAW with flux-cored wire? If it is a cored wire, and there is a PQR, and that PQR has been approved by the owner’s engineer, then it can be used.
The welding shape and weld quality of flux-cored wires are better than those of shielded metal arc welding, as is the depth of the molten pool. . . Pay more attention to the development of welding technology.
If there is a weld assessment and the plan is approved, then it’s acceptable. But if substitution is done without authorization, that’s definitely not allowed. It is recommended to either redo everything or require the contractor to carry out a weld assessment, as well as conduct non-destructive testing on the welded areas; only after a comprehensive evaluation can a decision be made. Generally, welding control involves managing weld assessments and welding procedures, along with proper on-site inspections and non-destructive testing