How to deal with the deformation of thin-walled containers caused by rolling rollers? ? Waiting online
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This post was last edited by chenlin_g on 2018-5-4 at 10:44. Dear sea friends, thin-walled containers are manufactured on rolling mills, and deformation has been observed; one type of deformation is local sinking, with several such areas. Another type of deformation is a compression of 1-2 mm throughout the area where rolling occurs; how should these two types of quality issues be addressed? How to detect it? 345R plate with a diameter of 5.2m and a thickness of 22mm. A 72-meter-tall tower is really a hassle. Local indentation, crushed in
1. Figure above: 2. Introduction to diameter and plate thickness; 3: Use wooden blocks and tap slowly with a sledgehammer. (smaller)) ； Arc-cutting plate, push slowly (relatively large) ；
Received. . Showing the image now. . .
What material is the container made of? Carbon steel or stainless steel? What is the diameter? What about the wall thickness? Provide the specific parameters before considering repair methods
Plastic deformation that has occurred is difficult to repair.
A wall thickness of 22 mm is quite thick; it’s also difficult to repair areas that are sunken. Of course, it’s possible to use jacks inside the container to provide support, while heating the sunken areas appropriately. The depression around the roller area is a difficult problem to deal with; if it affects acceptance, the only options are surface welding or replacing the affected section of the cylinder.
Well, in this case, it can only be lifted locally using a jack. Take your time. It’s almost done at the top; now we’ll apply putty as a final step.
The surfacing method is not feasible; the more it is repaired, the deeper the depression becomes. .
Does the rolling progress have an impact on the properties of the base material? Is it necessary to perform a TOFD test? Would it be better to carry out local heat treatment as well? To be honest, if there’s no problem with the material, I don’t want to repair the shape.