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Processing method for aluminium alloy middle thick plate

A processing method and technology of aluminum alloy, applied in the field of aluminum alloy medium and thick plate, can solve the problems such as the surface deformation of the rolled plate is larger than that of the core, the uneven structure of the plate in the height direction, and the size of the tool and die are unstable, and the preparation process can be achieved. The effect of reduction, uniformity and hardness

Active Publication Date: 2014-02-26
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of aluminum alloy medium and heavy plates by hot rolling has the following disadvantages: (1) The surface deformation of the rolled plate is larger than that of the center, and the height of the plate is uneven; (2) The texture of the plate after rolling results in anisotropy ; (3) The flatness and thickness of the rolled plate are only controlled by the roll, and the accuracy is difficult to grasp; (4) The internal stress formed during the rolling process causes the tool and mold to be unstable in the machining process or during use; (5) The hot rolling method has many processes, long production cycle and high cost
The disadvantage of the casting method is that the strength of the produced plate is low, which affects the performance, and does not have the necessary hardness during high-speed free cutting

Method used

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  • Processing method for aluminium alloy middle thick plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to Si 0.2 Kg; Mg 0.5 Kg; Cu 1.0 Kg; Cr 0.22 Kg; Fe 0.1kg; Zn 0.3Kg; , then heat the material to 600-1000 ° C, keep the material in a molten state for 1-10 hours, filter to remove the insoluble matter in the aluminum melt, cool to room temperature, and obtain an aluminum alloy ingot, and saw the aluminum alloy ingot into 6mm thickness plate; keep the plate at 480°C for 4 hours, and then immediately quench the plate by spraying, and control the cooling rate of the plate to about 10°C / s; pre-stretch the quenched plate, and then heat it at 130°C The plate is subjected to aging treatment for 20 hours, and the aged plate is cut into a certain thickness, and then the surface is smoothed by milling and grinding methods to obtain aluminum alloy medium and thick plates, which are packaged and put into storage.

[0040] In the smelting, argon gas is introduced for refining, and electromagnetic stirring is applied.

Embodiment 2

[0042] According to Si 0.6 Kg; Mg 0.9 Kg; Cu 0.8 Kg; Cr 0.09 Kg; Mn 0.1kg; Zn 0.05Kg; Ti 0.05 Kg; V 0.02 Kg; , then heat the material to 600-1000 ° C, keep the material in a molten state for 1-10 hours, filter to remove the insoluble matter in the aluminum melt, cool to room temperature, and obtain an aluminum alloy ingot, and saw the aluminum alloy ingot to a thickness of 20mm plate; keep the plate at 520°C for 3 hours, and then immediately quench the plate by spraying, and control the cooling rate of the plate to be about 8°C / s; pre-stretch the quenched plate, and then The plate is subjected to aging treatment for 15 hours, and the aged plate is cut into a certain thickness, and then the surface is smoothed by milling and grinding methods to obtain aluminum alloy medium and thick plates, which are packaged and put into storage.

[0043] In the smelting, argon gas is introduced for refining, and electromagnetic stirring is applied.

Embodiment 3

[0045] According to Si 0.8 Kg; Mg 1.2 Kg; Cu 0.6 Kg; Cr 0.02 Kg; Mn 1.0kg; Fe 0.3Kg; Ti 0.12 Kg; to 600-1000°C, keep the material in a molten state for 1-10 hours, filter to remove the insoluble matter in the aluminum melt, cool to room temperature, and obtain an aluminum alloy ingot, and saw the aluminum alloy ingot into a plate with a thickness of 50mm; The plate is kept at 550°C for 2 hours, and then the plate is immediately quenched by spraying, and the cooling rate of the plate is controlled to be about 6°C / s; the quenched plate is pre-stretched, and then the plate is subjected to 3 hours at 220°C After the aging treatment, the aging-treated plate is cut into a certain thickness, and then the surface is smoothed by milling and grinding methods to obtain aluminum alloy medium and thick plates, which are packaged and put into storage.

[0046] In the smelting, argon gas is introduced for refining, and electromagnetic stirring is applied.

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Abstract

The invention discloses a processing method for an aluminium alloy middle thick plate. The processing method comprises the following steps of smelting, degassing and filtering, casting, sawing, homogenizing, quenching, removing residual stress, carrying out aging treatment, cutting into slices and performing surface treatment to obtain the aluminium alloy middle thick plate. The aluminium alloy middle thick plate is uniform in structure, low in internal stress, high in size precision, high in strength and low in production cost, and has relatively good economic benefits and social benefits.

Description

technical field [0001] The present invention relates to an aluminum alloy medium and thick plate, especially an aluminum alloy plate used for manufacturing tools or molds (but not limiting its field of use), and the present invention also relates to the manufacturing process of this aluminum alloy plate. Background technique [0002] Aluminum alloy plate is an ideal material for making tools and molds. Compared with tool and die steel, the advantages of aluminum alloy are as follows: (1) The density is small. The density of aluminum is only about one-third of that of steel, so aluminum alloy molds are easier to handle, install and use; (2) High thermal conductivity. The thermal conductivity of aluminum alloy is about 4 times that of steel, which can shorten the cooling time of parts in the production process; (3) good cutting performance. The cutting speed of aluminum alloy can be up to 5 times that of steel, which can be used for high-speed cutting, which can significantl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22F1/04C22C21/18C22C21/08C22C21/02B23P15/00
Inventor 何克准郑玉林周文标唐伟彭自业赵茂密
Owner 广西南南铝加工有限公司
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