A New Thin Plate Leveling Mechanism with Zero In-plane Stress

Abstract

The invention discloses a novel sheet levelling mechanism with zero in-plane stress. A conventional levelling machine, particularly an eleven-roll levelling machine structure is improved, a levelling device capable of removing residual stress in a steel plate is designed, and the levelling device is particularly applicable to construction design of luxury cruise ships. The levelling device mainly comprises a levelling mechanism, a stress detection removing mechanism, a pressure control mechanism and an entire rack. According to the levelling device, in-plane stress of the steel plate is zero while leveling is achieved, namely, after levelling, in-plane bending moment of the steel plate is zero, horizontal single stress is zero, and section stress is zero, so that the levelled steel plate can be effectively prevented from warping and deforming due to residual stress inside, service life of the steel plate is prolonged, reliability of the steel plate is improved, and construction of the cruise ships is smoothly carried out.

Description

technical field [0001] The present invention relates to a leveling device for thin metal plates, in particular to a new type of thin plate leveling device that can make the in-plane stress zero. The device can realize the function of zero residual stress inside the metal plate, and is especially suitable for luxury cruise ships and warships Leveling and residual stress relief of marine steel plates. Background technique [0002] Luxury cruise ships are undoubtedly a shining pearl in the world's shipbuilding industry. At the same time, the construction of luxury cruise ships is also one of the important topics in my country in 2025. However, a very important part of the construction of luxury cruise ships is the production process, that is, the welding technology of thin plates and the accuracy of plate deformation. In terms of control and other aspects, it is obvious that luxury cruise ships have very high requirements for thin plates. Steel factories usually roll up the pro...

AI Technical Summary

Problems solved by technology

Steel factories usually roll up the produced steel plates through a bending machine, then transport them to the shipyard, and then straighten the steel plates through a straightening machine, but the traditional straightening machine is not very good at straightening the steel plates. Eliminate the residual stress remaining inside the steel plate, so that the residual stress in the steel plate can only be released through natural release under normal conditions, which will lead to different degrees of deformation of the steel plate, which will seriously affect the production process for luxury cruise ships quality

In addition, there is also a set of mechanism devices specially designed to eliminate the residual stress of the steel plate. This method not only increases the cost, but also makes the leveling and elimination complicated. The volume of the mechanism is large, not convenient but only The effect of improving the residual stress can be achieved, and there is no complete set of leveling and mechanical devices to achieve zero in-plane bending moment of the steel plate and basically zero residual stress

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