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Machining method of a window and door aluminium alloy

A processing method and aluminum alloy technology, which is applied in the field of aluminum alloy processing, can solve the problems of high thermal cracking tendency, poor corrosion resistance, and poor high-temperature strength of aluminum alloys, so as to reduce the high tendency of hot cracking, improve toughness and corrosion resistance, Effect of improving casting performance

Inactive Publication Date: 2018-12-18
阜阳力佳门业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of the prior art, to provide a processing method of aluminum alloy for doors and windows, by optimizing the alloy composition, proportion and processing technology, it can effectively solve the contradiction between the strength and casting performance of aluminum alloy, The obtained aluminum alloy has good casting performance while satisfying the strength and toughness, which solves the problems of high thermal cracking tendency, poor corrosion resistance and poor high temperature strength of aluminum alloy

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  • Machining method of a window and door aluminium alloy
  • Machining method of a window and door aluminium alloy

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Embodiment 1

[0042] The processing method of aluminum alloy for doors and windows in this embodiment, its components include: Zn: 6.50%, Cu: 2.50%, Mg: 2.10%, Mn: 0.40%, Si: 0.34%, Cr: 0.19%, Ti: 0.11%, Mo: 0.02%, B: 0.22%, rare earth element RE: 0.05%, the single content of other impurity elements is not more than 0.05%, the sum is not more than 0.10%, and the rest is Al;

[0043] According to the above composition ratio, the processing method of the aluminum alloy for doors and windows comprises the following steps:

[0044] (1) Melting: put the aluminum ingot into the furnace, and vacuumize the furnace to 1×10 -3 Pa, and then pass argon into the furnace to make the pressure in the furnace reach 30Pa, and heat the furnace temperature to 710°C to melt the aluminum ingot;

[0045] (2) Slag removal: use a slag remover at a temperature of 700°C to remove slag and impurities in the aluminum solution, and clean the scum and surface oxides on the surface of the aluminum solution;

[0046] (3)...

Embodiment 2

[0067] The processing method of aluminum alloy for doors and windows in this embodiment, its components include: Zn: 10.50%, Cu: 3.50%, Mg: 2.50%, Mn: 0.60%, Si: 0.38%, Cr: 0.25%, Ti: 0.15%, Mo: 0.05%, B: 0.26%, rare earth element RE: 0.09%, the single content of other impurity elements is not more than 0.05%, the sum is not more than 0.10%, and the rest is Al;

[0068] According to the above composition ratio, the processing method of the aluminum alloy for doors and windows comprises the following steps:

[0069] (1) Melting: put the aluminum ingot into the furnace, and vacuumize the furnace to 1×10 -3 Pa, then pass argon into the furnace to make the pressure in the furnace reach 40Pa, and heat the furnace temperature to 730°C to melt the aluminum ingot;

[0070] (2) Slag removal: use a slag remover at a temperature of 720°C to remove slag and impurities in the aluminum solution, and clean the scum and surface oxides on the surface of the aluminum solution;

[0071] (3) He...

Embodiment 3

[0092] The processing method of aluminum alloy for doors and windows in this embodiment, its components include: Zn: 8.50%, Cu: 3.00%, Mg: 2.30%, Mn: 0.50%, Si: 0.36%, Cr: 0.22%, Ti: 0.13%, Mo: 0.03%, B: 0.24%, rare earth element RE: 0.07%, the single content of other impurity elements is not more than 0.05%, the sum is not more than 0.10%, and the rest is Al;

[0093] According to the above composition ratio, the processing method of the aluminum alloy for doors and windows comprises the following steps:

[0094] (1) Melting: put the aluminum ingot into the furnace, and vacuumize the furnace to 1×10 -3 Pa, and then pass argon gas into the furnace to make the pressure in the furnace reach 35Pa, and heat the furnace temperature to 720°C to melt the aluminum ingot;

[0095] (2) Slag removal: use a slag remover at a temperature of 710°C to remove slag and impurities in the aluminum solution, and clean the scum and surface oxides on the surface of the aluminum solution;

[0096]...

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Abstract

The invention discloses a machining method of a window and door aluminium alloy. The window and door aluminium alloy comprises 6.50-10.50% of Zn, 2.50-3.50% of Cu, 2.10-2.50% of Mg, 0.40-0.60% of Mn,0.34-0.38% of Si, 0.19-0.25% of Cr, 0.11-0.15% of Ti, 0.02-0.05% of Mo, 0.22-0.26% of B, 0.05-0.09% of rare earth element RE and the balance of Al. The window and door aluminium alloy is prepared by using the steps of melting, slagging-off, heat preservation and standing, online refining, alloying, refining, on-line degassing, casting, homogenizing annealing, extrusion forming, heat treatment, shading, sealing treatment and the like. According to the machining method of the window and door aluminium alloy, by optimizing alloy components, a mixing ratio and a machining process, a problem that the strength and the casting performance of the aluminium alloy contradict each other can be effectively solved; and problems of large hot cracking tendency, poor corrosion resistance and poor high temperature strength of the aluminium alloy are solved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing, in particular to a processing method of aluminum alloy for doors and windows. Background technique [0002] Aluminum alloy has good processing performance, especially hypoeutectic aluminum-silicon alloy, which not only has good processing performance, but also has light specific gravity, beautiful surface and corrosion resistance, good casting performance, good comprehensive mechanical properties of finished products, and the strength can be greatly improved after heat treatment. An excellent casting alloy, it can be used for a variety of parts with complex shapes and is widely used in many fields. [0003] The use of aluminum alloy in the production and application of doors and windows has a broad market. At present, more door and window materials on the market are mainly aluminum alloy, color steel, and PVC materials, and aluminum alloy is because of its high hardness, light w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/02C22C1/06C22F1/053C25D3/12C25D5/48
CPCC22C21/10C22C1/026C22C1/06C22F1/053C25D3/12C25D5/48
Inventor 李均
Owner 阜阳力佳门业有限公司
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