Rolling method of magnesium alloy plate and auxiliary rolling method thereof

A technology for magnesium alloys and plates, applied in the field of material rolling and forming, can solve the problems of restricting the production and application of magnesium alloy plates, low yield and increasing rolling passes.

Inactive Publication Date: 2011-05-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, the production of magnesium alloy sheets in the world mainly follows the traditional hot-rolled blanking rolling process. Due to the low plastic deformation capacity of magnesium alloys, the traditional rolling processing method is prone to edge cr

Method used

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  • Rolling method of magnesium alloy plate and auxiliary rolling method thereof
  • Rolling method of magnesium alloy plate and auxiliary rolling method thereof
  • Rolling method of magnesium alloy plate and auxiliary rolling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example one

[0035] The initial size of the hot-rolled slab is 150×70×15mm, of which the thickness is 15mm. After rolling 5% on the side of the vertical roll at room temperature (20℃), the thickness of the plate is about 16mm at this time, and it is kept in the heating furnace to 300 Flat roll rolling is carried out after ℃, which can achieve a reduction of more than 50% in a single pass without edge cracks. The thickness of the plate after rolling is about 8mm. Similarly, if the plate is deformed without side rolling, a single pass without cracks can only achieve a reduction of about 20%.

Example Embodiment

[0036] Example two

[0037] The initial size of the hot-rolled slab is 150×70×15mm, and the slab with a thickness of 15mm is rolled 10% on the side of the vertical roll at room temperature. At this time, the thickness of the plate is about 16mm. After it is kept at 400℃ in a heating furnace Flat-roll rolling can achieve a single-pass reduction of more than 60% and basically no cracks at the edges. The thickness of the plate after rolling is about 6.4mm.

Example Embodiment

[0038] Example three

[0039] The initial size of the hot-rolled slab is 150×75×15mm. The slab with a thickness of 15mm is side-rolled at 100°C for 15%, and then flat-rolled at room temperature to achieve a single pass reduction of 25% or more. The thickness of the plate after rolling is about 12mm, and without pre-deformed samples, the single pass can only reach 15% without cracks.

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Abstract

The invention discloses an auxiliary rolling method of a magnesium alloy plate, comprising the following step: side-surface predeformation in which rolling pretreatment is carried out on the side surfaces of a magnesium alloy hot-rolling plate blank by a side-surface predeformation technique along the transverse direction or the rolling direction of the plate blank. The plate blank adopts the side-surface predeformation, the texture of the base surface of the material is weakened, the single-pass rolling deformation amount is obviously improved in the processing of subsequent rolling, the rolling molding performance of the plate blank is improved, the rolling pass and the intermediate annealing times are reduced, the processing cost of the magnesium alloy thin plate is obviously reduced, and the reasonable control of the quality and the cost of the magnesium alloy thin plate is realized. Simultaneously, the magnesium alloy plate prepared by adopting the technique has uniform and fine grain structures and excellent mechanical performance. The invention also discloses a rolling method of the magnesium alloy plate, comprising the steps: side-surface predeformation and flat-rolling molding, in the side-surface predeformation, predeformation treatment is carried out on a magnesium alloy hot-rolling plate blank from two sides; and in the flat-rolling molding, flat-rolling molding is carried out on semi-finished products of the plate blank in the range from room temperature to 400 DEG C, so as to manufacture the magnesium alloy plate.

Description

technical field [0001] The invention relates to the field of rolling and forming of materials, in particular to a rolling method of a magnesium alloy plate capable of improving the rolling and forming performance of the magnesium alloy plate and an auxiliary rolling method thereof. Background technique [0002] Magnesium alloys are widely used in structural and processing components due to their light weight, high dimensional stability, anti-electromagnetic interference, excellent processing characteristics, excellent rigidity-to-weight ratio, good electrical conductivity, and recyclability. with a sharp rise in demand. Most 3C (computer, communication and consumer electronics) equipment, auto parts, hand tools, transportation and other industries are all markets where magnesium alloy technology can be applied. [0003] Although the specific gravity of magnesium alloy is heavier than that of plastic, the strength and elastic modulus per unit weight are higher than that of p...

Claims

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Application Information

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IPC IPC(8): B21B1/22
Inventor 刘庆信运昌黄光杰王茂银
Owner CHONGQING UNIV
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