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Composite shaping method of wide magnesium alloy thin plates

A magnesium alloy and wide-width technology, which is applied in the field of compound shaping of wide-width magnesium alloy thin plates, can solve the problems of immature finishing technology, etc., and achieve the effect of no increase in production process, simple method and easy operation

Active Publication Date: 2014-06-18
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no mature finishing technology for the shaping of wide magnesium alloy sheets with a thickness of 1.0mm to 3.2mm and a width of 750mm to 1500mm in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Step 1. Place a steel plate with a smooth and flat surface and a size of 10mm×1600mm×3000mm on the material tray of the resistance furnace as a backing plate, and then stack two hot-rolled AZ31B magnesium alloy plates with a size of 3.2mm×1500mm×2500mm Put it on the backing plate, and then put the 600kg steel plate with a smooth and flat surface and slightly larger size than the AZ31B magnesium alloy plate as a counterweight plate on the uppermost layer of the stacked AZ31B magnesium alloy plate, and finally heat the resistance furnace. When the temperature reaches the annealing temperature, push the tray into the resistance furnace for annealing and pressing; the annealing temperature is 350°C, and the annealing time is 5 hours;

[0019] Step 2. Send the AZ31B magnesium alloy plate after annealing, pressing and shaping in step 1 to the 21-roller straightening machine for straightening. The number of times of straightening is 3 times, and the straightening speed is 3m / mi...

Embodiment 2

[0022] Step 1. Place a steel plate with a smooth surface and a size of 10mm×1300mm×3000mm on the material tray of the resistance furnace as a backing plate, and then place a hot-rolled MB2 magnesium alloy plate with a size of 2.5mm×1225mm×2450mm Place a 500kg steel plate with a smooth and flat surface on the backing plate and a size slightly larger than the MB2 magnesium alloy plate as a counterweight plate on the MB2 magnesium alloy plate, and finally heat the resistance furnace until the temperature of the resistance furnace reaches the annealing temperature. Push the tray into the resistance furnace for annealing and pressing; the annealing temperature is 330°C, and the annealing time is 4h;

[0023] Step 2. Send the MB2 magnesium alloy plate after annealing, pressing, and shaping in step 1 to a 21-roller straightening machine for straightening. The number of times of straightening is 3 times, and the straightening speed is 4m / min. The machine inlet width is 2.8mm, and the ...

Embodiment 3

[0026] Step 1. Place a titanium plate with a clean and flat surface and a size of 10mm×1600mm×3000mm on the material tray of the resistance furnace as a backing plate, and then place three hot-rolled AZ31B magnesium alloy plates with a size of 1.5mm×1500mm×2500mm Stack it on the backing plate, and then put the 400kg steel plate with a smooth and flat surface, slightly larger than the AZ31B magnesium alloy plate, as a counterweight plate on the uppermost layer of the stacked AZ31B magnesium alloy plate, and finally heat the resistance furnace. When the furnace temperature reaches the annealing temperature, push the tray into the resistance furnace for annealing and pressing; the annealing temperature is 300°C, and the annealing time is 2 hours;

[0027] Step 2. After cooling the AZ31B magnesium alloy plate after annealing and pressing to room temperature in step 1, it is sent into a 21-roller straightening machine for straightening. The number of times of straightening is 4 time...

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Abstract

The invention discloses a composite shaping method of wide magnesium alloy thin plates. The composite shaping method includes the steps of (1) placing a base plate with the smooth and flat surface on a material disc of a resistance furnace, then stacking the one to five wide magnesium alloy thin plates with the thickness ranging from 1.0 mm to 3.2 mm and the width ranging from 750 mm to 1500 mm on the base plate, then enabling a steel plate with the smooth and flat surface to serve as a balance weight pressing plate, placing the steel plate on the stacked wide magnesium alloy thin plate on the uppermost layer, finally heating the resistance furnace, and pushing the material disc into the resistance furnace to carry out annealing pressing shaping after the temperature of the resistance furnace reaches the annealing temperature, and (2) straightening the wide magnesium alloy thin plates after the annealing pressing shaping. According to the composite shaping method, annealing pressing shaping is carried out in the mode that a balance weight is applied in the annealing process, composite shaping is carried out in cooperation with multiple times of roller type straightening, the unevenness of the shaped wide magnesium alloy thin plates is smaller than 3 mm / m and remarkably better than the unevenness required by high-accuracy-level plates in the national standard, and the wide thin plates beyond the width standard of the national standard are excellently shaped.

Description

technical field [0001] The invention belongs to the technical field of shaping magnesium alloy plates, and in particular relates to a compound shaping method for wide-width magnesium alloy thin plates. Background technique [0002] In recent years, due to its light weight, electromagnetic shielding, heat dissipation and other excellent properties, magnesium alloys have been more and more used in aerospace, rail transit, 3C and other fields. Due to its wide width and good consistency of structure and performance, the wide-width magnesium alloy sheet can be formed as a whole in practical applications, reducing weld seams and improving application rate. However, due to the low specific heat and fast heat dissipation of magnesium alloys, uneven deformation is prone to occur during processing, resulting in poor plate shapes, such as middle waves, edge waves, 1 / 4 waves, and scoops. The general method is difficult The shape of the thin plate is handled well, which leads to difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D1/00B21D1/02B21D37/16
Inventor 黄张洪巨建辉党鹏苏周柱
Owner WESTERN TITANIUM TECH
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