A cold and hot integrated forming method for two-way curvature plates of ships

Abstract

The invention discloses a cold-hot integrally forming method for a ship bidirectional curvature plate. The cold-hot integrally forming method for the ship bidirectional curvature plate comprises the steps of (a) establishing a dedicated cold-hot integrally forming system; (b) establishing a corresponding relationship between basic data of a to-be-formed plate and machining data; (c) selecting and determining suitable machining data based on the established corresponding relationship, and correspondingly driving the cold-hot integrally forming system to upload the plate; (d) monitoring the forming effect of the plate, performing comparison and feedback on the difference between the formed effect and a machining target, and performing the steps of selecting, determining, uploading and monitoring again based on the difference until the bidirectional curvature plate meeting with the machining target is formed. The cold-hot integrally forming method for the ship bidirectional curvature plate can reduce negative influence from machining to the performance of the plate while the machining efficiency is improved, can reduce equipment cost, can reduce work intensity of personnel, and can improve forming precision of the ship bidirectional curvature plate remarkably.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, and more specifically relates to a cold-heat integral forming method for two-way curvature plates of ships. Background technique [0002] Due to the single-product order-based production method of shipbuilding and the structural characteristics of the two-way curvature plate itself, the forming and processing methods of the two-way curvature plate of the ship are different from the die-stamping batch production method of large-volume film plates such as automobiles. molding method. At present, the forming methods for ship curvature plates in the prior art mainly include linear heating method, cylindrical rolling method and multi-point bending method, etc. [0003] The so-called linear heating method is to use the flame to heat the plate in a local linear shape, and use the principle of local thermal expansion and contraction to make the workpiece produce residual plastic deformation, so as ...

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Problems solved by technology

However, due to the relationship between temperature and material, the actual processing temperature needs to be controlled within a certain range, and the forming processing efficiency under the condition of large curvature and thick plate will be affected; For plate forming with internal and external strain, the wire heating method itself has difficulties in meeting the forming processing requirements

[0004] For cylindrical roll pressing, it is obvious that only one-way curvature shapes can be processed, and two-way curvature cannot be formed; while bending processing methods such as multi-point cold pressing are completely dependent on the action of force, applying force and applying force to the processing plate to be formed The scope is very large, not only to overcome the problem of rebound, but also to increase the overall volume and cost of equipment

In addition, regardless of cold processing or hot processing in the above methods, manual work or manual control based on experience still dominates at present, and there are corresponding defects such as difficulty in quality assurance and low processing efficiency.

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