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Manufacturing method of aluminum magnesium alloy

A technology of aluminum-magnesium alloy and manufacturing method, which is applied in the field of plate manufacturing, can solve problems such as low strength and poor elongation, and achieve the effects of uniform thickness, smooth plate surface, and good surface finish

Active Publication Date: 2013-12-25
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the production process of producing 5083 aluminum alloy H321 state thickness 12.5mm ~ 75mm plate which has not yet been formed, and the existing casting method to prepare 5083 aluminum alloy in H321 state thickness 12.5mm ~ 75mm is easy to produce low strength and To solve the problem of poor elongation, a method for manufacturing aluminum-magnesium alloy thick plates is provided

Method used

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specific Embodiment approach 1

[0014] Specific Embodiment 1: In this embodiment, a method for manufacturing an aluminum-magnesium alloy thick plate is specifically prepared according to the following steps:

[0015] 1. Melting: The mass fraction of Si is 0.0001%-0.40%, the mass fraction of Fe is 0.0001%-0.40%, the mass fraction of Cu is 0.0001%-0.10%, the mass fraction of Mn is 0.40%-1.0%, Mg The mass fraction of Cr is 4.0%-4.9%, the mass fraction of Cr is 0.05%-0.25%, the mass fraction of Ni is 0.0001%-0.01%, the mass fraction of Zn is 0.0001%-0.25%, and the mass fraction of Ti is 0.0001%. ~0.15%, the mass fraction of Zr is 0.0001%~0.01%, and the balance is Al. Weigh pure magnesium ingot, aluminum-manganese master alloy, aluminum-titanium master alloy, aluminum-silicon master alloy, aluminum-iron master alloy, electrolysis Copper, aluminum-nickel master alloy, aluminum-zinc master alloy and aluminum ingots for remelting are added to a dry melting furnace, and melted at a temperature of 700°C to 750°C for 3...

specific Embodiment approach 2

[0021] Specific embodiment two: the difference between this embodiment and specific embodiment two is that in step one, the mass fraction of Si is 0.02% to 0.38%, the mass fraction of Fe is 0.02% to 0.38%, and the mass fraction of Cu is 0.02% ~0.08%, the mass fraction of Mn is 0.50%~0.90%, the mass fraction of Mg is 4.2%~4.7%, the mass fraction of Cr is 0.07%~0.23%, the mass fraction of Ni is 0.0002%~0.009%, the mass fraction of Zn The mass fraction is 0.02%-0.23%, the mass fraction of Ti is 0.02%-0.13%, the mass fraction of Zr is 0.0002%-0.009%, and the balance is Al. Weigh pure magnesium ingots, aluminum-manganese master alloys, aluminum-titanium Master alloys, aluminum-silicon master alloys, aluminum-iron master alloys, electrolytic copper, aluminum-nickel master alloys, aluminum-zinc master alloys and aluminum ingots for remelting. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that in step 1, melting is carried out at a temperature of 710° C. to 740° C. for 3.5 hours to 4.5 hours. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a manufacturing method of plates and particularly relates to a manufacturing method of an aluminum magnesium alloy thick plate, which can be used for solving the problems that a process for processing a plate made of aluminum alloy 5083 which is in the H321 state and is 12.5-75mm in thickness, and the aluminum alloy 5083 being in the H321 state and being 12.5-75mm in thickness, which is prepared by the existing casting method, is poor in strength and percentage elongation. The method comprises the steps of firstly, melting; secondly, casting; thirdly, evening fire; fourthly, rolling and fifthly, annealing. According to the method disclosed by the invention, the blank of the manufacturing method of an alloy thick plate 5083H321 being 12.5-75mm in thickness is filled; and according to the method, a reasonable technological process is selected, so that the yield strength of the plate is 275-293MPa, the tensile strength of the plate is 350-365MPa, and the percentage elongation of the plate is 10.8-11.9%. The aluminum magnesium alloy thick plate manufactured by the method can be used for the industrial fields of armored vehicles, ships, automobile industries, and canning.

Description

technical field [0001] The invention relates to a method for manufacturing a board. Background technique [0002] 5083 aluminum alloy has the characteristics of medium strength, good corrosion resistance, weldability and easy processing and forming. It is a typical alloy in the Al-Mg series alloy and has important application value in many fields. 5083 aluminum alloy sheets in different heat treatment states are the main materials used in armored vehicles, ships, automobile manufacturing, and canning industries. So far, most magnesium alloy products are mainly obtained by casting or mechanical processing methods, and most of them are aluminum-magnesium alloy sheets. The 5083 aluminum alloy in the H321 state with a thickness of 12.5mm to 75mm is easy to produce low strength and elongation by using the existing casting method. The problem of poor quality is that there is currently no production process for forming 5083 aluminum alloy H321 plates with a thickness of 12.5mm to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/057C21D8/02
Inventor 张宏亮杜传慧马英义王晨王强苏广焱左德运于莉莉
Owner NORTHEAST LIGHT ALLOY CO LTD
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