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Numerical simulation method for multi-pass rolling process of ultra-thick plate blank

A numerical simulation and multi-pass technology, applied in CAD numerical modeling, electrical digital data processing, special data processing applications, etc., can solve the problems of low simulation accuracy, long calculation time, complex deformation process, etc., and achieve high simulation accuracy , Eliminate casting defects and enhance the overall performance

Pending Publication Date: 2019-07-05
GRIMAT ENG INST CO LTD
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Problems solved by technology

However, due to the complexity of the dislocation asynchronous rolling deformation process and the large plastic deformation process, using the traditional finite element method to simulate the multi-pass dislocation asynchronous process takes a long time to calculate and the simulation accuracy is low, so it is urgent to develop new numerical simulation technology

Method used

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  • Numerical simulation method for multi-pass rolling process of ultra-thick plate blank
  • Numerical simulation method for multi-pass rolling process of ultra-thick plate blank
  • Numerical simulation method for multi-pass rolling process of ultra-thick plate blank

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Embodiment Construction

[0026] Such as figure 2 , The numerical simulation method of the multi-pass rolling process of ultra-thick slab of the present invention includes the steps:

[0027] 1) Establish a numerical simulation system. The numerical simulation system includes heat transfer model, material model, friction model, constitutive equation, structure evolution model, and the geometry of upper and lower rolls 20, 30 and ultra-thick slab 10 established by CAD software model;

[0028] 2) Input boundary conditions, material parameters, and process parameters to the numerical simulation system;

[0029] 3) Numerical simulation of the rolling process of ultra-thick slab 10 through the Nth pass:

[0030] 3-1) Based on the numerical simulation system, the finite element method (a well-known algorithm) is used to numerically simulate step by step that the slab 10 contacts the upper and lower rolls 20, 30 and enters the unsteady deformation rolling stage;

[0031] 3-2) Realize the transfer of various physical...

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Abstract

The invention discloses a numerical simulation method for a multi-pass rolling process of an ultra-thick plate blank. The numerical simulation method comprises the following steps: establishing a numerical simulation system; inputting boundary conditions, material parameters, process parameters and simulation control parameters into the numerical simulation system; wherein numerical simulation iscarried out on the ultra-thick plate blank through the rolling processes of all passes, a finite element method is adopted for carrying out numerical simulation on the plate blank to make contact withan upper roller and a lower roller to enter a bite unstable-state deformation rolling stage, and adopting an Euler grid finite volume method for carrying out numerical simulation on the plate blank to enter a stable-state deformation rolling stage; numerical simulation completion. According to the method, the whole rolling process of the ultra-thick plate blank can be accurately simulated, the simulation precision is high, the simulation operation time is short, and a reliable numerical basis is provided for making an optimal and reasonable rolling process scheme.

Description

Technical field [0001] The invention relates to a numerical simulation method for a multi-pass rolling process of an ultra-thick slab, and belongs to the technical field of non-ferrous metal processing technology simulation. Background technique [0002] High-strength and high-toughness aluminum alloy thick plates are extremely important structural materials in modern aviation, aerospace, shipbuilding, and transportation. Hot rolling is the most critical process in the process of manufacturing high-strength and high-toughness aluminum alloy thick plates, that is, the means of deformation. Hot rolling can achieve large deformation of the plate, eliminate casting defects, refine grains, and enhance the overall performance of the plate. However, due to the limitation of the opening degree of the existing rolling mill and the original thickness of the billet, it is difficult for simultaneous rolling to achieve sufficient and uniform deformation of the large-thickness aluminum alloy ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F2111/10G06F30/17G06F30/23
Inventor 程磊黄国杰肖伟王建伟
Owner GRIMAT ENG INST CO LTD
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