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Aluminum alloy material for rifle aiming device and preparation method of aluminum alloy material

A technology of aluminum alloy material and sight, applied in the field of accessories and equipment of light weapons, can solve problems such as cracking and insufficient elongation, and achieve the effects of improving strength, reducing crack sources and improving metallographic structure

Inactive Publication Date: 2018-04-27
JIANGSU JIALV IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

6061 aluminum alloy must have high strength, but the elongation is not good enough, and cracks often occur during hole expansion and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Each metal material is taken by weight. The composition and weight percentage of each metal material are Si: 0.4%, Mg: 0.8%, Cu: 0.2%, Cr: 0.6%, Mn: 1.0%, La: 0.5%, Fe: 0.1%, Ti: 0.01%, the balance is Al;

[0027] (2) Throw all the above materials into a high-temperature melting furnace and increase the temperature in the furnace. When the temperature reaches 600°C, use a refining flux whose main components are chlorine salts and fluorine salts. The gas produced by chlorine salts or fluorine salts is floating The impurity or hydrogen in the melt will be adsorbed in the melt, and the slag removal and exhaust will be carried out; this process usually requires continuous stirring;

[0028] (3) After stirring the melt evenly, raise the temperature to 730°C;

[0029] (4) Gently stir the metal in the lower part of the melt with a stirring rod, and when the metal in the lower part floats to the upper part of the crucible, perform semi-continuous casting to obtain ingots; ...

Embodiment 2

[0034] (1) Each metal material is taken by weight. The composition and weight percentage of each metal material are Si: 0.45%, Mg: 0.9%, Cu: 0.23%, Cr: 0.7%, Mn: 1.05%, La: 0.6%, Fe: 0.2%, Ti: 0.02%, the balance is Al;

[0035] (2) Throw all the above materials into the high-temperature melting furnace and increase the temperature in the furnace. When the temperature reaches 630°C, use a refining flux whose main components are chlorine salt and fluorine salt. The gas produced by chlorine salt or fluorine salt is in the process of floating The impurity or hydrogen in the melt will be adsorbed in the melt, and the slag removal and exhaust will be carried out; this process usually requires continuous stirring;

[0036] (3) After stirring the melt evenly, raise the temperature to 735°C;

[0037] (4) Gently stir the metal in the lower part of the melt with a stirring rod, and when the metal in the lower part floats to the upper part of the crucible, perform semi-continuous casting...

Embodiment 3

[0042] (1) Each metal material is taken by weight. The composition and weight percentage of each metal material are Si: 0.5%, Mg: 0.10%, Cu: 0.25%, Cr: 0.8%, Mn: 1.1%, La: 0.7%, Fe: 0.25%, Ti: 0.03%, the balance is Al;

[0043] (2) Throw all the above-mentioned materials into the high-temperature melting furnace and increase the temperature in the furnace. When the temperature reaches 670°C, use a refining flux whose main components are chlorine salts and fluorine salts. The gas produced by chlorine salts or fluorine salts is floating The impurity or hydrogen in the melt will be adsorbed in the melt, and the slag removal and exhaust will be carried out; this process usually requires continuous stirring;

[0044] (3) After stirring the melt evenly, raise the temperature to 740°C;

[0045] (4) Gently stir the metal in the lower part of the melt with a stirring rod, and when the metal in the lower part floats to the upper part of the crucible, perform semi-continuous casting to ...

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Abstract

The invention discloses an aluminum alloy material for a rifle aiming device and a preparation method of the aluminum alloy material. The aluminum alloy material comprises 0.4-0.6% of Si, 0.8-1.1% ofMg, 0.2-0.3% of Cu, 0.6-1.0% of Cr, 1.0-1.2% of Mn, 0.5-0.8% of La, 0-0.3% of Fe, 0-0.04% of Ti and the balance Al and impurities. The preparation method includes the steps that (1) all metal materials are obtained according to the weight; (2) all the materials are fed into a high-temperature smelting furnace, a refining flux is adopted, and deslagging and degassing are conducted; (3) a molten body is uniformly stirred; (4) metals on the lower portion of the molten body are slightly stirred through a stirring rod, and when the metals on the lower portion float to the upper portion of a crucible, semi-continuous casting is conducted to obtain a cast ingot; (5) the molten body is subjected to homogenization treatment; (6) the cast ingot is kept warm and subjected to thermal extrusion deformation, and online water penetration is conducted after demolding is finished so as to obtain an extruded material; and (7) the cast ingot is subjected to solution treatment and water quenching and thenartificial aging treatment and is air-cooled to the room temperature, and an aluminum alloy pipe material is obtained.

Description

technical field [0001] The invention relates to the technical field of accessory equipment for light weapons, in particular to an aluminum alloy material for a rifle sight and a preparation method thereof. Background technique [0002] With the development of firearms, the weight requirements of firearms are getting higher and higher. Many new materials including aluminum alloy materials are used. Now most of the aluminum alloy materials for rifle sights are military standard 6061 aluminum alloy materials. Press it into a tube, then ream the two ends of the aluminum alloy tube; form a bell mouth, and finally use it to make a gun sight. 6061 aluminum alloy must have high strength, but the elongation is not good enough, and cracks often occur during hole expansion and use. [0003] The invention discloses a preparation method of an aluminum alloy material for a rifle sight with high strength, high hardness, good wear resistance and good elongation. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/06C22F1/04
CPCC22C21/00C22C1/06C22F1/04
Inventor 陆永唐继勇张庆华钱跃荣
Owner JIANGSU JIALV IND
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