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Novel casting aluminium alloy and preparation method thereof

A casting aluminum alloy, a new type of technology, applied in the field of new casting aluminum alloy and its preparation, can solve the problem of poor comprehensive performance such as low service life, high temperature tensile strength, elastic modulus thermal conductivity, linear expansion rate hardness, etc., engine piston work Performance limitations and other issues, to achieve the effects of prolonging service life, improving comprehensive mechanical properties, and improving high-temperature thermal fatigue strength

Active Publication Date: 2011-09-14
四川渝邻汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material of the piston is the basic carrier of the quality of the piston. In order to meet the requirements of modern engines, only when the performance of the material of the piston is greatly improved, other high-tech applications can be fully reflected on this basis; most of the existing engine pistons are made of cast aluminum. Alloy ZL109 material, but the high temperature tensile strength, elastic modulus, thermal conductivity, linear expansion rate, hardness and other comprehensive properties of the material are poor, which limits the performance of the engine piston and the service life is low

Method used

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  • Novel casting aluminium alloy and preparation method thereof
  • Novel casting aluminium alloy and preparation method thereof
  • Novel casting aluminium alloy and preparation method thereof

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Embodiment 1

[0018] Embodiment 1: The novel casting aluminum alloy of this embodiment comprises by weight percentage: 11% of Si, 4% of Cu, 0.5% of Mg, 3.5% of Ni, 0.08% of Ti and 0.2% of V, and the rest are Aluminum ingot; wherein, the aluminum ingot brand is Al99.50.

[0019] The preparation method of the novel casting aluminum alloy is: comprise the following steps:

[0020] a. After drying the smelting furnace, put 400 kg of copper and 350 kg of nickel into the smelting furnace, and continue to heat up until the copper and nickel are melted;

[0021] b. Add aluminum ingots: put in 4036 kg of aluminum ingots first, continue heating, and then add 4036 kg of aluminum ingots after melting;

[0022] c. When the aluminum ingot is completely melted to a molten state, add 1100 kg of silicon particles and stir to make the surface of the silicon particles completely cover the molten aluminum;

[0023] d. Heating to raise the temperature, control the furnace temperature at 900°C, when the melt t...

Embodiment 2

[0028] Embodiment 2: The novel casting aluminum alloy of this embodiment comprises by weight percentage: 13% Si, 2% Cu, 1.2% Mg, 2% Ni, 0.18% Ti and 0.1% V, and the rest are Aluminum ingots. Among them, the grade of aluminum ingot is Al99.50.

[0029] The preparation method of the novel casting aluminum alloy is: comprise the following steps:

[0030] a. After the smelting furnace is dried, put 200 kg of copper and 200 kg of nickel into the smelting furnace, and continue to heat up until the copper and nickel are melted;

[0031] b. Add aluminum ingots: put in 4076 kg of aluminum ingots first, continue heating, and then add 4076 kg of aluminum ingots after melting;

[0032] c. When the aluminum ingot is completely melted to a molten state, add 1300 kg of silicon particles and stir to make the surface of the silicon particles completely cover the molten aluminum;

[0033] d. Heating to raise the temperature, control the furnace temperature at 850°C, when the melt turns orang...

Embodiment 3

[0039] Embodiment 3: The novel casting aluminum alloy of this embodiment comprises by weight percentage: 12% of Si, 3% of Cu, 0.8% of Mg, 3% of Ni, 0.12 of Ti and 0.15% of V, and the rest is aluminum ingot. Among them, the grade of aluminum ingot is Al99.50.

[0040] The preparation method of the novel casting aluminum alloy is: comprise the following steps:

[0041] a. After drying the smelting furnace, put 300 kg of copper and 300 kg of nickel into the smelting furnace, and continue to heat up until the copper and nickel are melted;

[0042] b. Adding aluminum ingots: first put in 4046.5 kg of aluminum ingots, continue heating, and then add 4046.5 kg of aluminum ingots after melting;

[0043] c. When the aluminum ingot is completely melted to a molten state, add 1200 kg of silicon particles and stir to make the surface of the silicon particles completely cover the molten aluminum;

[0044] d. Heating to raise the temperature, control the furnace temperature at 880°C, when...

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Abstract

The invention discloses a casting aluminium alloy and a preparation method thereof. The casting aluminium alloy comprises the following components in percentage by weight: 11-13wt% of Si, 2-4wt% of Cu, 0.5-1.2wt% of Mg, 2-3.5wt% of Ni, 0.08-0.18wt% of Ti, 0.1-0.2wt% of V and the balance of aluminium ingot, wherein the mark of the aluminium ingot is Al99.50. Compared with the existing casting aluminium alloy ZL109, the casting aluminium alloy has the advantages that comprehensive mechanical property is greatly improved, and high-temperature thermal fatigue strength is improved by 10%. Each index of the obtained aluminium alloy is far beyond the national criterion of acceptability after the aluminium alloy is tested by the aluminium alloy tensile property experiment of the environment experiment center of the China Academy of Engineering Physics. The casting aluminium alloy is used for manufacturing engine pistons, the working performance of the engine piston can be greatly improved, and the service life of the piston can be greatly prolonged.

Description

technical field [0001] The invention relates to a new material and a preparation method thereof, in particular a novel cast aluminum alloy and a preparation method thereof. Background technique [0002] With the improvement of people's needs and environmental requirements, the country's requirements for modern automobile engines are also constantly increasing. Modern engines (especially medium and small power engines) must have high power, high speed, low fuel consumption, and low emissions. And low noise and other requirements, which also put forward higher requirements for engine components. The piston is the heart of the engine, and the working environment is very harsh (with high temperature, high pressure, high friction, etc.). The material of the piston is the basic carrier of the quality of the piston. In order to meet the requirements of modern engines, only when the performance of the material of the piston is greatly improved, other high-tech applications can be f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/03
Inventor 袁云忠
Owner 四川渝邻汽车零部件有限公司
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