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Flat-bulb steel rolling process optimization method based on finite element simulation

A process optimization and finite element technology, applied in metal rolling, design optimization/simulation, CAD numerical modeling, etc., can solve the problem of unsuitable cross-section shape, unfavorable multi-pass rolling simulation, mesh re-division and reconstruction and other problems. The division method is cumbersome and other problems, so as to ensure the accuracy of calculation, shorten the simulation operation time, and avoid serious distortion.

Active Publication Date: 2021-10-08
UNIV OF SCI & TECH BEIJING
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  • Application Information

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Problems solved by technology

[0004] The finite element simulation of the rolling process in the prior art is very cumbersome in mesh re-division, reconstruction and division methods, and it is not conducive to the smooth progress of multi-pass rolling simulation. Rolling process for uniform shaped steel

Method used

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  • Flat-bulb steel rolling process optimization method based on finite element simulation
  • Flat-bulb steel rolling process optimization method based on finite element simulation
  • Flat-bulb steel rolling process optimization method based on finite element simulation

Examples

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Embodiment

[0084] Taking the rolling of HP370*13 spherical flat steel with a section size of 280mm*165mm as an example, in order to realize the flexible and controlled rolling of the rolling process of spherical flat steel, the finite element simulation method in the present invention is used for calculation, and the spherical flat steel is calculated according to the calculation results. The rolling process of flat steel is optimized:

[0085] Make full use of the advantages of each model to simulate a complex multi-pass large deformation process in stages:

[0086] 1) Use grid topology and grid seeds to realize the grid structure of complex cross-section blanks in each pass, such as figure 2 shown. The number of cross-sectional meshes N after local refinement is 1593, and the number of meshes before local refinement is N 0 384, satisfying N=(2~5)N 0 requirements. The cross-sectional area of ​​the billet in this pass is 21237mm 2 , the pass area reduction rate is 21%, and the side...

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Abstract

A flat-bulb steel rolling process optimization method based on finite element simulation relates to a metal rolling manufacturing process technology, and comprises the following steps: S1, measuring material parameters and geometric parameters of a blank to be rolled, establishing a finite element model, and dividing grids by using a grid structuring method; S2, dividing the multi-pass reciprocating rolling technology into a plurality of single-pass rolling technologies, conducting simulation on the basis of a finite element model till rolling of all passes is completed, and outputting a final simulation result; and S3, optimizing the rolling technology according to the final simulation result obtained in the S2. According to the method, the flat-bulb steel rolling process optimization method which is low in cost, high in efficiency and high in precision can be provided, and a reliable numerical basis is provided for reasonable optimization of the flat-bulb steel rolling process.

Description

technical field [0001] The invention relates to the technical field of metal rolling manufacturing technology, in particular to a method for optimizing the rolling process of bulbous flat steel based on finite element simulation. Background technique [0002] Entering the 21st century, my country's ship and ocean engineering equipment field has ushered in a new period of rapid growth. The rapid development of the ship and ocean engineering equipment field has proposed high strength, high toughness, large heat input welding and resistance to steel for shipbuilding and ocean engineering. Corrosive urgent needs, but also need to meet the needs of large thickness and large size specifications. Bulb flat steel, as a special structural steel for ships, is an indispensable special steel for the construction of large ships and various ocean-going, coastal, inland water ships and various types of ships, which has an important impact on the bearing capacity and safety of the hull struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/23B21B1/08G06F111/10G06F119/18
CPCG06F30/17G06F30/23B21B1/0805G06F2111/10G06F2119/18
Inventor 于浩王锟李宇晗朱自猛
Owner UNIV OF SCI & TECH BEIJING
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