Deformation straightening method and deformation straightening system for thin-walled cylinder

Abstract

The invention relates to the field of machine manufacturing, in particular to a deformation straightening method and a deformation straightening system for a thin-walled cylinder. The method comprisesthe following steps: measuring the inner diameter of a section of a selected shaft on the cylinder, and marking the maximum diameter as a first diameter and a corresponding position as a first mark position and marking the minimum diameter as a second diameter and a corresponding position as a second mark position; manufacturing a supporting stick of a corresponding length; applying a pressure tothe cylinder in the first mark position to increase the second diameter gradually; when the second diameter is increased to be greater than the length of the supporting stick, arranging the supporting stick in the cylinder along the second diameter direction; withdrawing the pressure to shrink the section of the selected shaft to clamp the supporting stick; and distressing the cylinder and takingthe supporting stick out to finish straightening. By applying the pressure to the cylinder for reverse deformation and fixing the reverse deformation of the cylinder through the supporting stick anddistressing treatment, deformation is straightened and the method is simple to operate and easy to implement.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a method and system for correcting deformation of a thin-walled cylindrical body. Background technique [0002] With the rapid development of my country's equipment manufacturing industry, the specifications of cylinder forgings for large container equipment are gradually increasing. The diameter of many cylinder forgings for equipment has reached more than φ6000mm and the height has reached more than 4000mm. During the heat treatment process of this type of forging, due to the decrease in stiffness at high temperature, deformation will inevitably occur, especially for cylindrical forgings with small wall thickness, large diameter and high height, which often undergo elliptical deformation. [0003] In order to control and reduce the amount of deformation of the barrel-type forgings after heat treatment and prevent them from affecting their final use, the manufacturers hav...

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Problems solved by technology

[0005] The invention provides a method and system for correcting the deformation of a thin-walled cylinder, which can solve the problem of inconvenient operation for correcting thermally deformed cylinders in the prior art

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