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After a leak occurred in the bottom plate of the sulfuric acid tank, a 400*400 square hole was made in the bottom plate; the weld cracked after welding

2015-06-17View Original

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After a leak occurred in the bottom plate of the sulfuric acid tank, a 400*400 square hole was made in the plate to inspect the foundation; however, the weld cracked after welding. How can this be resolved?
Reply #22015-06-17
First, use a cloth to wipe away the sulfuric acid in the area surrounding the welding site. Then, neutralize any remaining sulfuric acid in that area with weak alkaline solution. After that, wipe the area with a cloth soaked in clean water, and use a dry cloth to remove the excess water before proceeding with the welding process. During the welding process, make sure that the workers do not bring sulfuric acid back again while moving their shoes.
Reply #32015-06-18
How should the residual sulfuric acid under the tank bottom be dealt with? Is cracking related to the presence of sulfuric acid? ? ?
Reply #42015-06-18
Neutralize the acidic solution and clean it thoroughly; after welding the bottom plate, arrange tension rods evenly, and apply acid-resistant rubber to the surface after thorough cleaning
Reply #52015-06-18
Why are struts installed? Is the weld cracking due to the presence of sulfuric acid?
Reply #62015-06-20
It was a welding process issue, which has been resolved. But it’s unknown whether it will crack again in the future.
Reply #72015-06-23
Square hole? I’m not sure if a round hole would work

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