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Method for evaluating stamping forming performance of magnesium alloy plate for preparing box-shaped component

An evaluation method, stamping forming technology, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of less than 2000 tons of output, difficulty in magnesium alloy forming, and inability to evaluate plate forming requirements, so as to ensure quality and reduce development Effects of period and cost

Pending Publication Date: 2021-06-01
CHINALCO MATERIALS APPL RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, the market share of magnesium alloy plate stamping and forming components is still low, with an annual output of less than 2,000 tons, which is far lower than that of steel and aluminum.
One of the main reasons is that it is difficult to form magnesium alloys, and the specifications and standards for stamping and forming of magnesium alloy sheets are not perfect. Therefore, it is of great practical significance to evaluate the stamping performance of magnesium alloy sheets for the promotion of magnesium alloy sheets.

Method used

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  • Method for evaluating stamping forming performance of magnesium alloy plate for preparing box-shaped component

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preparation example Construction

[0028] The method for evaluating the stamping performance of magnesium alloy sheets for preparing box-shaped components according to the present invention includes the following steps: clarifying the shape of the box-shaped component → establishing a model → meshing → assigning material properties to the sheet → calculating and solving → specifying the dangerous parts of the component → forming the component performance evaluation.

[0029] The characteristic parts of the box-shaped component include the flange area, the fillet area of ​​the die, the fillet area of ​​the punch, the straight edge area, the bottom area of ​​the box, and the fillet area of ​​the component.

Embodiment 1

[0031] (1) The shape of the box-shaped component is: length × width × height = 150 × 80 × 10mm, bottom fillet radius R = 5mm; edge fillet R = 10mm;

[0032] (2) According to the shape of the above-mentioned box-shaped component, AUTOCAD is used to establish the initial stamping model (including the surface model of the punch, die, blank holder, and blank), and the ABAQUS software is imported to establish the model and divide the grid;

[0033] (3) Give the sheet material properties: material stress-strain curve, sheet density 1.78g / cm 3 , plate thickness 0.7mm, modulus of elasticity 45GPa, Poisson's ratio 0.35, die temperature 400°C, punch temperature 400°C, ambient temperature 20°C, coefficient of friction 0.05, blankholder gap 1.10t, concave-convex die gap 1.10t; evaluation The model adopted in the criterion: mesoscopic damage model; the material performance parameters are obtained by uniaxial tensile test, and the tensile test temperature is 400°C;

[0034] (4) Submit the ...

Embodiment 2

[0040] (1) The shape of the box-shaped component is: length × width × height = 150 × 80 × 15mm, bottom fillet radius R = 5mm; edge fillet R = 10mm;

[0041] (2) Use AUTOCAD to establish the initial stamping model according to the shape of the above-mentioned box-shaped member, import ABAQUS software to establish the model, and divide the grid;

[0042] (3) Give the sheet material properties: material stress-strain curve, sheet density 1.78g / cm 3 , plate thickness 0.7mm, modulus of elasticity 45GPa, Poisson's ratio 0.35, die temperature 200°C, punch temperature 200°C, ambient temperature 20°C, coefficient of friction 0.09, blankholder gap 1.05t, concave-convex die gap 1.15t; evaluation The model used in the criterion: mesoscopic damage model; the material performance parameters are obtained by uniaxial tensile test, and the tensile test temperature is 200°C;

[0043] (4) Submit the solver for analysis, solution and calculation, and obtain the component porosity distribution cl...

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Abstract

The invention discloses a method for evaluating the stamping forming performance of a magnesium alloy plate for preparing a box-shaped component. The method comprises the following steps of determining the shape of the box-shaped component, establishing a model, dividing grids, endowing material attributes to the plate, calculating and solving, determining dangerous parts of the component, and evaluating the forming performance of the component. According to the method, the stress field, the strain field, the thickness change and the material flow rule of the material in the forming process can be visually seen by adopting a forming simulation technology, dangerous parts in the component forming process can be quickly and accurately found, the dangerous parts of the component are experimented and evaluated, whether the plate meets the forming requirement or not can be judged in advance. The processes of mold opening, stamping forming experiments and the like are omitted, and the development cycle and cost of products are greatly reduced.

Description

technical field [0001] The invention relates to the field of forming and processing of non-ferrous metal plates, in particular to an evaluation method for the stamping and forming performance of magnesium alloy plates for preparing box-shaped components. Background technique [0002] Magnesium alloy has many advantages such as light weight, good electronic shielding performance, radiation resistance, and strong shock absorption ability. It has broad application prospects in major industries of the national economy such as aerospace, transportation, and 3C electronics, as well as national defense and military industries. [0003] The plate stamping process has a high yield rate, and can obtain thin-walled parts and magnesium alloy products with excellent performance, various shapes and excellent surfaces. Due to the close-packed hexagonal structure of magnesium alloys, plastic deformation is difficult, resulting in technical difficulties in the stamping of magnesium alloy she...

Claims

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Application Information

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IPC IPC(8): G06F30/23B21D22/22B21D37/10
CPCG06F30/23B21D22/22B21D37/10G06F2119/08G06F2119/14
Inventor 蔡正旭娄花芬李凯王同波代晓腾郑晓兵
Owner CHINALCO MATERIALS APPL RES INST CO LTD
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