What to do about welding deformation in manholes
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There is welding deformation at the manhole; additionally, how should the weld slag on the flange surface be dealt with?
As required, it can only be redone. The weld slag on the flange surface can be ground off, or it can be processed using a lathe.
This post was last edited by ylb913 on 2015-8-15 at 18:00. When it comes to welding manholes, especially those involving sealing surfaces, grinding is necessary, and professional grinding equipment may be required in such cases. Regarding the repair of the flange surface, Haiyou’s “Remembering the Source of Water” campaign once included relevant photos of the maintenance work done.
To weld the manhole, the manhole cover must first be tightened with bolts, and it is then welded as one unit with the manhole. I really admire your riveters.
When welding that barrel joint to the lower flange, if the lid is in place it’s not possible to carry out the welding; or what should be the correct procedure?
The manhole is an attachment in itself; it can be welded to the tank body only after the neck plate has been welded to the flange. Don’t you weld the neck plate to the tank body first and then weld the flange? Take a close look at the message I sent you yesterday. Take another look at the construction methods you’ve devised to see if there are any misunderstandings in the understanding.
We weld the lower flange to the barrel section first and then attach the upper cylinder. Recently, we’ve encountered an issue where there is welding slag on the surface of the lower flange; after the workers polished it, air leakage occurred when the flange cover was installed, and metal washers were used to address this problem. The process has been improved; now the screws are tightened first before the cylinder body is welded
The screws aren’t tightened properly, I guess. We weld the flanges and short sections to the main cylinder first; there are no other processing steps. Wherever the screwing isn’t tight enough, we just use a wrench to tighten it – we attach a pipe sleeve behind the wrench and use that to tighten the screw.
Welding deformation control issues, welding heat input control.
Could you send me the manufacturing process of your company? Thank you
Go check the private messages. I told you already – you just don’t look.