Metal plate texture adjusting and control method

A metal sheet and texture technology, applied in the field of sheet metal processing, to achieve the effect of ensuring the flatness and deformation uniformity of the sheet, improving the stamping performance at room temperature, and simple operation

Inactive Publication Date: 2019-01-25
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention intends to propose a solution to the problem of strong texture and concentration of wide-width densely packed hexagonal metal sheets, specifically a method

Method used

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  • Metal plate texture adjusting and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The magnesium-aluminum alloy extruded sheet with a thickness of 1.2 mm has a strong base texture and poor stamping performance at room temperature (cupping value is 2.8).

[0020] pass figure 1 Fix the steel plate in the way shown, and the upper and lower loads are 20KN; refer to figure 2 The direction of force shown is marked, F2 and F4 are fixed, F1 and F3 are activated, the deformation rate is 2mm / min, the deformation displacement is 7mm, and the thickness of the plate after deformation is 1.31mm. After annealing at 320°C for 90 minutes, the texture deflects to F1 and F3 directions, forming a bimodal texture, which significantly weakens the basal texture, and the stamping performance (cup value) at room temperature is 7.2.

Embodiment 2

[0022] A 1.1 mm thick AZ31 magnesium alloy rolled plate is used, and its texture is a strong basal texture, and its stamping performance at room temperature is poor (cupping value is 3.1).

[0023] pass figure 1 Fix the steel plate in the way shown, and the upper and lower loads are 15KN; refer to figure 2 The direction of the force shown is fixed, F1 and F3 are fixed, and F2 and F4 are activated. The deformation rate is 1.5mm / min, the deformation displacement is 5mm, and the thickness of the plate after deformation is 1.18mm. After annealing at 320°C for 60 minutes, the texture deflects to the F2 and F4 directions, forming a bimodal texture, which obviously weakens the basal texture, and the stamping performance (cupping value) at room temperature is 7.6.

Embodiment 3

[0025] The extruded sheet of magnesium-aluminum-tin alloy with a thickness of 1 mm has a strong base surface texture and poor stamping performance at room temperature (cupping value is 2.7).

[0026] pass figure 1 Fix the steel plate in the way shown, and the upper and lower loads are 10KN; refer to figure 2 As shown in the direction of the force, fix F1 and F2, start F3 and F4, the deformation rate of F3 is 1mm / min, the deformation rate of F3 is 0.5mm / min, and the deformation displacement is 5 and 3mm respectively. After deformation, the plate becomes thicker to 1.06mm. After annealing at 300°C for 60 minutes, the texture deflects to the F3 and F4 directions, forming an asymmetric bimodal texture, which significantly weakens the basal texture, and the room temperature stamping performance (cupping value) is 8.1.

[0027] From the above examples, it can be explained that the present invention fixes the metal plate through the upper and lower loading forces, and at the same ...

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Abstract

The invention discloses a metal plate texture adjusting and control method. The metal plate texture adjusting and control method comprises the following steps that firstly, the upper surface and the lower surface of a metal plate are clamped and fixed, the metal plate bears force along the thickness direction of the metal plate, and thus, different orientations of the metal plate texture are achieved, wherein it is further limited that a metal plate fixing device is used to clamp and fix the upper surface and the lower surface of the metal plate, and the device is characterized in that throughupper loading force and lower loading force and with the cooperation of intermediate elastic materials, a crease phenomenon of the metal plate during compression deformation can be prevented, and theflatness and deformation uniformity of the metal plate are guaranteed; and then deformation of different degrees in the aspects such as speed, angle and deformation amount is carried out in the thickness direction of the plate, the grain orientation of the metal plate is adjusted and controlled, preferential texture orientation of the plate is achieved, and thus the plate adapting to different environments with comprehensive performance is obtained. The method is especially applicable to wide metal plates, operation is easy, complex auxiliary technology means such as edge trimming are not needed, and the indoor-temperature stamping property of stamped parts of large specification and size can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of sheet metal processing, and in particular relates to a method for regulating the texture of sheet metal. Background technique [0002] Most metal sheets are obtained by extrusion or rolling processes. For 0.5-3mm thin sheets, they are mainly used for forming parts, and their texture has the most significant impact on the formability of the sheet. How to control the texture of sheet metal is the main focus of sheet metal research. Generally speaking, the deformed metal sheet has uniform and fine grains and high strength. However, most hexagonal close-packed metals can easily cause strong and concentrated basal texture in the extrusion or rolling process, which greatly weakens their room temperature stamping performance and limits the application of deformed plates. Contents of the invention [0003] In view of this, the present invention intends to propose a solution to the problem of strong texture an...

Claims

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Application Information

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IPC IPC(8): B21C37/02
CPCB21C37/02
Inventor 杨青山马庆柴炎福杨华宝蒋斌
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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