Preparing method of high-strength aluminum alloy material used for building door and window machining

A technology of aluminum alloy materials, building doors and windows, applied in the field of preparation of aluminum alloy materials, can solve problems such as insufficient mechanical strength and corrosion resistance, long casting time, poor tensile strength, hardness and machinability, etc., to achieve the best effect and reproduction Good performance, reduce the surface tension of the melt, and improve the surface roughness

Inactive Publication Date: 2019-05-31
安徽博安门窗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-strength aluminum alloy material for building doors and windows in order to solve the problems of poor tensile strength, hardness and machinability, insufficient mechanical strength and corrosion resistance, and long ingot casting time of traditional aluminum alloy materials. Preparation method of aluminum alloy material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The invention provides a method for preparing a high-strength aluminum alloy material for building doors and windows. Calculated by mass percentage, the raw materials of the aluminum alloy material are: 0.9% silicon, 6.8% copper, 0.3% magnesium, 0.8% iron, and 0.8% manganese. %, 0.35% of chromium, 0.15% of titanium, 0.07% of strontium, 0.3% of zirconium, 0.8% of boron, 0.2% of rare earth elements, and the rest of the raw materials are aluminum.

[0023] In this embodiment: the high-temperature strength of copper-containing and silicon-containing alloys can be improved by adding manganese and titanium, which can prevent the recrystallization process of aluminum alloys, increase the recrystallization temperature, and significantly refine the recrystallization grains. Chromium and zirconium hinder the nucleation and growth process of recrystallization, have a certain strengthening effect on the alloy, and can also improve the toughness of the alloy and reduce the sensitivit...

Embodiment 2

[0025] A method for preparing a high-strength aluminum alloy material for building doors and windows provided by the invention comprises the following steps:

[0026] Step 1: Weigh the raw materials according to the mass percentage, the chromium element is ferrochromium, and the silicon element is metal silicon particles, put the raw materials into the melting furnace for melting and then add the covering agent;

[0027] Step 2: Add gas refining agent into the melting furnace and stir;

[0028] Step 3: After all the raw materials are melted, carry out slag removal and filtration, and keep the filtered raw materials warm;

[0029] Step 4: Pour the melt in step 3 into the pre-prepared model for pouring;

[0030] Step 5: Demoulding after casting and taking out the ingot;

[0031] Step 6: Put the ingot into the prepared heat treatment furnace, heat it up and keep it warm, then cool it down and keep it warm, quench it in an organic solvent, and make a finished product after cooli...

Embodiment 3

[0035] The covering agent is a powder mixture of potassium chloride, sodium chloride and cryolite, and the ratio of potassium chloride, sodium chloride and cryolite is 2:2:1.

[0036] In this embodiment: this covering agent can not only prevent the melt from oxidizing and absorbing hydrogen, but also has the effect of degassing hydrogen. Because its melting point is lower than that of the melt, its specific gravity is smaller than that of the melt, and it also has good wetting properties. A continuous liquid covering film can be formed on the surface of the melt to separate the melt from the charge, and has a certain refining ability.

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PUM

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Abstract

The invention discloses a preparing method of high-strength aluminum alloy material used for building door and window machining. The aluminum alloy material comprises, by mass percent, 0.9% of silicon, 6.8% of copper, 0.3% of magnesium, 0.8% of iron, 0.8% of manganese, 0.35% of chromium, 0.15% of titanium, 0.07% of strontium, 0.3% of zirconium, 0.8% of boron, 0.1% of rhenium, 0.2% of rare earth and the balance raw material aluminum. Manganese and titanium are added for improving the high-temperature strength of alloy containing copper and silicon, the recrystallization process of the aluminumalloy can be prevented, the recrystallization temperature is increased, the recrystallization grains can be obviously refined, through adding of chromium and zirconium, recrystallization nucleation and growing can be obstructed, the alloy can be subjected to certain strengthening, the toughness of the alloy can be improved, stress corrosion cracking sensitivity can be reduced, strontium has the advantages of being long in metamorphic effective time, good in effect and reproducibility and the like, the casting ingot homogenizing time is reduced, the material mechanical property and plastic machining can be improved, the product surface roughness is improved, and hot rolling and cold rolling are smoothly carried out.

Description

technical field [0001] The invention relates to the technical field of preparation of aluminum alloy materials, in particular to a preparation method of high-strength aluminum alloy materials for building doors and windows. Background technique [0002] Aluminum alloy doors and windows are made of aluminum alloy profiles into frames, stiles, and fan components, and then assembled with glass, seals and hardware. Compared with traditional doors and windows, they have good wind pressure resistance, sealing, Thermal insulation and diaphragm responsiveness have been widely used in construction projects. [0003] Traditional aluminum alloy materials have poor tensile strength, hardness, and machinability, and insufficient mechanical strength and corrosion resistance, and the ingot casting time is long. Contents of the invention [0004] The purpose of the present invention is to provide a high-strength aluminum alloy material for building doors and windows in order to solve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/14C22C21/16C22F1/057
Inventor 袁新娅
Owner 安徽博安门窗有限公司
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