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Aluminium alloy with high strength and excellent cutting property and preparation method thereof

A high-strength, aluminum alloy technology, applied in the field of alloys, can solve the problems of broken tools, sticky tools, and uncontrollable comprehensive properties of profiles, etc., and achieve the effect of improving chip performance

Active Publication Date: 2015-01-28
JIANGSU ASIA PACIFIC LIGHT ALLOY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different values ​​of chemical composition will result in different material properties. When the range of chemical composition is large, the performance difference will fluctuate in a wide range, so that the comprehensive performance of the profile will be uncontrollable
The aluminum alloy rods used in auto parts need to be processed precisely. For example, the poor chipping performance of aluminum alloy materials will directly lead to sticking of the knife during precision machining, rotten teeth in the threading process, and even broken knife during processing.

Method used

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  • Aluminium alloy with high strength and excellent cutting property and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] An aluminum alloy with high strength and excellent chipping performance, the formula ratio is as follows by weight percentage: Si 0.55%, Mg 0.55%, Mn 0.02%, Cu 0.05%, Ti 0.02%, Fe 0.2%, Bi 0.02%, the balance for aluminum;

[0028] After the aluminum ingot is melted, slag removal, alloying, refining, standing, casting, homogenization, extrusion and artificial aging are performed to obtain an aluminum alloy with high strength and excellent chipping performance.

[0029] The preparation method of the aluminum alloy with high strength and excellent chip performance, the steps are as follows in terms of mass percentage:

[0030] (1) Melting: Put the aluminum ingot into the furnace and heat it to 720°C to melt it;

[0031] (2) Slag removal: When the temperature is 710°C, sprinkle the slag removal agent evenly into the furnace and fully stir for 5-10 minutes, and remove the scum on the surface of the aluminum liquid with a rake; the amount of the slag removal agent is 0.3 per...

Embodiment 2

[0044] An aluminum alloy with high strength and excellent chipping performance, the formula ratio is as follows by weight percentage: Si 0.6%, Mg 0.62%, Mn 0.05%, Cu 0.1%, Ti 0.04%, Fe 0.25%, Bi 0.05%, the balance for aluminum;

[0045]After the aluminum ingot is melted, slag removal, alloying, refining, standing, casting, homogenization, extrusion and artificial aging are performed to obtain an aluminum alloy with high strength and excellent chipping performance.

[0046] The preparation method of the aluminum alloy with high strength and excellent chip performance, the steps are as follows in terms of mass percentage:

[0047] (1) Melting: Put the aluminum ingot into the furnace and heat it to 760°C to melt it;

[0048] (2) Slag removal: When the temperature is 710-760°C, sprinkle the slag removal agent evenly into the furnace and stir it fully for 10 minutes, and remove the scum on the surface of the aluminum liquid with a rake; the amount of the slag removal agent is 0.3 ...

Embodiment 3

[0061] An aluminum alloy with high strength and excellent chipping performance, the formula ratio is as follows by weight percentage: Si 0.58%, Mg 0.60%, Mn 0.04%, Cu 0.08%, Ti 0.03%, Fe 0.22%, Bi 0.04%, the balance for aluminum;

[0062] After the aluminum ingot is melted, slag removal, alloying, refining, standing, casting, homogenization, extrusion and artificial aging are performed to obtain an aluminum alloy with high strength and excellent chipping performance.

[0063] The preparation method of the aluminum alloy with high strength and excellent chip performance, the steps are as follows in terms of mass percentage:

[0064] (1) Melting: Put the aluminum ingot into the furnace and heat it to 750°C to melt it;

[0065] (2) Slag removal: when the temperature is 730°C, sprinkle the slag removal agent evenly into the furnace and fully stir for 8 minutes, and use a rake to remove the scum on the surface of the aluminum liquid; the amount of the slag removal agent is 0.3kg p...

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Abstract

The invention relates to an aluminium alloy with high strength and excellent cutting property and a preparation method thereof, and belongs to the technical field of alloys. The product, namely the aluminium alloy with high strength and excellent cutting property, is obtained through slagging-off, alloy preparing, refining, standing, casting, homogenizing, extruding and carrying out artificial aging after melting an aluminium ingot. According to the invention, by means of proportioning alloy composition, controlling a production process and the like, the alloy bar can achieve the tensile strength of greater than or equal to 280MPa, the regulated non-proportional extension strength of greater than or equal to 250MPa, the elongation A of greater than or equal to 10 percent and the HV hardness of 98 to 108; the cutting property of the material is greatly improved.

Description

technical field [0001] The invention relates to an aluminum alloy with high strength and excellent chip performance and a preparation method thereof, belonging to the technical field of alloys. Background technique [0002] 6063 aluminum alloy belongs to the AL-Mg-Si series alloy, the main alloying elements are magnesium and silicon, has excellent weldability, hot extrusion processability, good corrosion resistance, and is widely used in architectural aluminum doors and windows, auto parts, etc. field. In the national standard GB / T3190, the weight percentage range of the 6063 alloy composition is shown in Table 1. [0003] Table 1 [0004] [0005] The mechanical performance index of 6063 aluminum alloy T6 state specified in the national standard GB / T3191-2010 is: tensile strength ≥ 215MPa, specified non-proportional elongation strength ≥ 170MPa, elongation A 50 ≥8%. Different values ​​of chemical composition will result in different material properties. When the rang...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/08C22C1/06C22F1/05
CPCC22C1/06C22C21/00C22C21/08C22F1/05
Inventor 史俊强冯身霖
Owner JIANGSU ASIA PACIFIC LIGHT ALLOY TECH CO LTD
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