Method for manufacturing magnesium alloy thin plate

A manufacturing method and magnesium alloy technology, which is applied in the field of manufacturing magnesium alloy thin plates, can solve the problems of magnesium alloy products such as coarse structure, low yield strength, and low elongation, and achieve fine and uniform grain structure, good surface finish, and plate smooth surface effect

Active Publication Date: 2012-01-04
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of low yield strength, low tensile strength, low elongation, and coarse structure of magnesium alloy products in magnesium alloy thin plates prepared by existing casting methods or mechanical processing methods, and provides a high-performance magnesium alloy Manufacturing method of sheet
[0005] Advantages of the present invention: one, the magnesium alloy thin plate prepared by the present invention can be clearly seen by using 100 times optical metallographic microscope photos, the magnesium alloy thin plate prepared by the present invention can clearly see that the grain structure is small and uniform, which proves that The present invention solves the problem of the coarse structure of the magnesium alloy thin plate; two, the present inve

Method used

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  • Method for manufacturing magnesium alloy thin plate
  • Method for manufacturing magnesium alloy thin plate

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specific Embodiment approach 1

[0007] Embodiment 1: A method for manufacturing a magnesium alloy sheet in this embodiment is specifically completed according to the following steps:

[0008] 1. Smelting: According to the mass fraction of Al in the magnesium alloy melt is 3.0%-4.0%, the mass fraction of Zn is 0.20%-0.8%, the mass fraction of Mn is 0.15%-0.50%, the mass fraction of Si is n, The mass fraction of Fe is m, the mass fraction of Cu is x, the mass fraction of Ni is y, the mass fraction of Be is z, and the mass fraction of Mg is 94.4%-96.7%. , smelting at a temperature of 760℃~780℃ for 3h~5h to obtain a magnesium alloy melt; 2. Casting: adopt the semi-continuous casting method to make the aluminum alloy melt in step 1 at a casting temperature of 710℃~730℃ and a casting speed of 710℃~730℃. A magnesium alloy ingot with a diameter of 500mm is made under the conditions of 2.0m / h~2.4m / h, the cooling water strength is 0.03MPa~0.06MPa, and the cooling water temperature is 10℃~20℃; 2. Prepare a magnesium a...

specific Embodiment approach 2

[0018]Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the mass fraction of Al in the magnesium alloy melt is 3.2% to 3.8%, the mass fraction of Zn is 0.40% to 0.7%, and the mass fraction of Mn is 0.40% to 0.7%. The mass fraction of Fe is 0.20% to 0.35%, the mass fraction of Si is 0.01% to 0.09%, the mass fraction of Fe is 0.01% to 0.04%, the mass fraction of Cu is 0.01% to 0.04%, and the mass fraction of Ni is 0.001% ~0.004%, the mass fraction of Be is 0.01%~0.04%, and the mass fraction of Mg is 95%~96%. Others are the same as the first embodiment.

specific Embodiment approach 3

[0019] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, the temperature is 765°C to 775°C for smelting for 3.5h to 4.5h. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for manufacturing a magnesium alloy thin plate. The invention aims to solve the problems of low yield strength, low tensile strength and low elongation percentage in the magnesium alloy thin plate manufactured by the conventional casting method or machining method and the problem of thick tissues of magnesium alloy products. The method comprises the following steps of: 1, melting; 2, casting; 3, annealing; 4, extruding; 5, performing hot rolling; and 6, performing cold rolling. The method is mainly used for manufacturing the magnesium alloy thin plates.

Description

technical field [0001] The invention relates to a manufacturing method of a magnesium alloy sheet. Background technique [0002] Magnesium alloys have a series of outstanding advantages such as high specific strength, good damping performance, excellent shielding performance, and easy recycling, and have important application value in many fields. Especially in recent years, the increasing emphasis on environmental protection, energy saving and structural lightweight technology has greatly increased the future expectations for the application of magnesium alloys. However, magnesium alloys have a close-packed hexagonal crystal structure, low symmetry, few slip systems, and poor plastic deformation ability and plastic workability. So far, most magnesium alloy products are mainly obtained by casting methods or machining methods. The yield strength of the magnesium alloy sheet prepared by the existing casting method or the machining method is 128MPa-172MPa, the tensile strengt...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22C1/03C22F1/06
Inventor 王国军胡连喜王强王尔德刘显东
Owner NORTHEAST LIGHT ALLOY CO LTD
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