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Full-continuous rolling production process for magnesium alloy plate

A production process, magnesium alloy plate technology, applied in the direction of metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of low plasticity of magnesium alloys, poor formability and poor plasticity of rolled plates, and achieve short preparation process and good forming High durability, avoid edge cracking effect

Pending Publication Date: 2022-01-25
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Magnesium alloy rolling plate faces the following problems: (1) The production efficiency of magnesium alloy plate rolling is low
Considering the poor plasticity of magnesium alloy sheets, the production of magnesium alloy sheets in the prior art is carried out at high temperature in a multi-pass and small reduction mode, and the magnesium alloy is rolled in the existing conventional production process There will be as many as ten passes for medium and thick plates
(2) The plasticity of magnesium alloy is low, it is difficult to adopt conventional cold rolling to the target thickness and shape quality
(3) Magnesium alloy rolled sheet is generally poor in comprehensive mechanical properties and formability compared with its competitor aluminum sheet
[0014] In summary, it can be seen that in order to effectively solve the problems of low magnesium alloy production efficiency, poor plasticity at low temperature and poor formability of rolled sheets during the rolling process of magnesium alloy sheets

Method used

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  • Full-continuous rolling production process for magnesium alloy plate
  • Full-continuous rolling production process for magnesium alloy plate
  • Full-continuous rolling production process for magnesium alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0083] In Examples 1-7 of the present invention, the preparation of continuous feed (magnesium alloy extrudate rolls) is carried out in accordance with two different extrusion processes, and the processed process parameters and various performance results are obtained. Table 1-1, shown in Table 1-2.

[0084] Table 1-1 lists alloy components and related manufacturing process parameters of two consecutive rolling materials.

[0085] Table 1-1.

[0086]

[0087] The two continuous rolling materials obtained were respectively observed and various performance tests, and the resulting observations and test results were listed in Table 1-2.

[0088] Table 1-2 lists the performance test results of two consecutive rolling materials.

[0089] Table 1-2.

[0090]

[0091] The two materials used above are used. figure 2 The steps shown are made to produce a magnesium alloy sheet, forming the first examples of the following description.

[0092] Table 2 lists Examples 1-7 figure 2 The key ...

Embodiment 1

[0097] Step 1: The corresponding magnesium alloy extruder roll corresponding to Table 1-2 described above is supplied.

[0098] Step 2: Follow the magnesium alloy extrusion plate, install the tension roller downstream of the unwinding machine, adjust the amount of plate of the sheet, adjust the sheet of the plate, so that the open / rolling tension = slate cross-sectional area × sheet yield The intensity is 10% -30%. In the present embodiment, the rolling speed is controlled in the magnesium alloy sheet rolling process, and the opening speed is 20 m / min. At this time, the rolling tension is 2.0KN = slate cross-sectional area × slave yield strength 20%. The scroll is made of heat-inspiring mode in the furnace, which is heated in the furnace, the temperature is 150 ° C, control the heating time of 15 min, adjust the steering of the magnesium alloy sheet after the open removal to enable it to enter the level The direction of rolling, and the retrograde temperature rolling is entere...

Embodiment 2

[0105] In the present embodiment, the target magnesium plate thicknesses of Example 2 were the same as in Example 1, and the same temperature rolling steps as in Example 1 were implemented.

[0106] In the present embodiment, the step of Example 2 is substantially the step 1 to 7 of the first embodiment. However, it is to be noted that in fact, in Example 1, the process parameters designated in step 2 and step 3 are as follows:

[0107] Step 1: The corresponding magnesium alloy extruder roll corresponding to Table 1-2 described above is supplied.

[0108]Step 2: Follow the magnesium alloy extrusion plate, install the tension roller downstream of the unwinding machine, adjust the amount of plate of the sheet, adjust the sheet of the plate, so that the open / rolling tension = slate cross-sectional area × sheet yield The intensity is 10% -30%. In the present embodiment, the rolling speed is controlled in the magnesium alloy sheet rolling process, and the opening speed is 20 m / min....

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Abstract

The invention discloses a full-continuous rolling production process for a magnesium alloy plate. The full-continuous rolling production process comprises the following steps that S0, a magnesium alloy extrusion plate coil serves as a supplied material; S1, the magnesium alloy plate coil is uncoiled, and the rotating direction of an uncoiled magnesium alloy plate strip is adjusted so that the magnesium alloy plate strip can enter the horizontal rolling direction; the magnesium alloy plate coil is the magnesium alloy extrusion plate coil in the step S0 or the magnesium alloy plate coil after the step S3; S2, the heads and the tails of the adjacent magnesium alloy plate strips are connected through friction stir welding; and S3, the magnesium alloy plate strip enters a reverse warm rolling machine to be rolled, and the rotating direction of the rolled magnesium alloy plate strip is adjusted so that the magnesium alloy plate strip can enter a winder to be wound; and to the step S1 is turned again to repeat the steps S1-S3 until the target thickness is reached. By the adoption of the full-continuous rolling production process for the magnesium alloy plate, full-continuous rolling of the magnesium alloy plate can be effectively achieved, and the magnesium alloy plate with the mechanical property and the forming property is prepared.

Description

Technical field [0001] The present invention relates to a production process, and more particularly to a full continuous rolling production process. Background technique [0002] Magnesium alloys have low densities (density is 1.8g / cm 3 ), High ratio strength and ratio stiffness, and other excellent physical properties (eg thermal conductivity, electromagnetic shielding performance, damping performance and response characteristics to sound high frequency domain), therefore, magnesium alloy in automobile, rail transit Waiting for various fields such as transportation industries and home appliance electronics have good application prospects. [0003] At present, the market is in a wide range of 400 mm or less, and the thickness is between 0.5mm to 2 mm, with a magnesium alloy sheet having a certain intensity and excellent stamping. This specification of the magnesium alloy sheet can be effectively applied to parts of the manufacture of home appliance electronics industrial produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/32B21B15/00B21B3/00
CPCB21B1/32B21B15/0085B21B3/00
Inventor 谢玉徐世伟张春伟吉晓乐唐伟能王成全
Owner BAOSHAN IRON & STEEL CO LTD
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