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Low pressure aluminium alloy and preparation method thereof

A technology of aluminum alloy and aluminum alloy melt, applied in the field of aluminum alloy processing, can solve the problems of low strength and fatigue resistance of aluminum alloy, poor elongation, low mechanical properties, etc., and achieves easy promotion, strong corrosion resistance, improved Hardenability effect

Inactive Publication Date: 2018-12-18
广东华劲金属型材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cast aluminum alloys can be divided into aluminum-silicon alloys, aluminum-copper alloys, aluminum-magnesium alloys, aluminum-zinc alloys and aluminum rare earth alloys according to their chemical composition. Good performance), special aluminum-silicon alloy (heat treatment strengthening, high mechanical properties, good casting performance), but the existing aluminum alloys have low strength and fatigue resistance, and poor elongation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A low-pressure aluminum alloy of the present invention comprises the following components in parts by weight: 70 parts, 0.1 part of titanium, 0.1 part of praseodymium, 5 parts of zinc, 8 parts of copper, 3 parts of silicon, 4 parts of magnesium, 2 parts of manganese, zirconium 3 parts, iron 4.8 parts.

[0018] Further, the aluminum is pure aluminum with a purity greater than 99%.

[0019] A method for preparing a low-pressure aluminum alloy, comprising the following steps:

[0020] S1: Aluminum alloy proportioning and smelting, the intermediate frequency smelting furnace is placed in a vacuum environment, zinc, copper, manganese and iron are placed in the intermediate frequency smelting furnace, the heating temperature is above 1000°C, the aluminum alloy is prepared, and then smelted for 0.5h to obtain aluminum alloy melt;

[0021] S2: adding titanium, praseodymium, silicon and zirconium into the intermediate frequency smelting furnace, maintaining the temperature of ...

Embodiment 2

[0027] A low-pressure aluminum alloy and a preparation method thereof of the present invention, comprising the following components in parts by weight: 74 parts, 0.15 parts of titanium, 0.2 parts of praseodymium, 6 parts of zinc, 5 parts of copper, 2.5 parts of silicon, 5 parts of magnesium, manganese 1.15 parts, 2 parts zirconium, 4 parts iron.

[0028] Further, the aluminum is pure aluminum with a purity greater than 99%.

[0029] A method for preparing a low-pressure aluminum alloy, comprising the following steps:

[0030] S1: Aluminum alloy proportioning and smelting, the intermediate frequency smelting furnace is placed in a vacuum environment, zinc, copper, manganese and iron are placed in the intermediate frequency smelting furnace, the heating temperature is above 1000°C, the aluminum alloy is prepared, and then smelted for 0.6h to obtain aluminum alloy melt;

[0031] S2: adding titanium, praseodymium, silicon and zirconium into the intermediate frequency smelting fu...

Embodiment 3

[0037] A low-pressure aluminum alloy of the present invention comprises the following components in parts by weight: 72 parts, 0.15 parts of titanium, 0.15 parts of praseodymium, 5.5 parts of zinc, 6 parts of copper, 2 parts of silicon, 4 parts of magnesium, 1.7 parts of manganese, zirconium 4 parts, iron 4.5 parts.

[0038] Further, the aluminum is pure aluminum with a purity greater than 99%.

[0039] A method for preparing a low-pressure aluminum alloy, comprising the following steps:

[0040] S1: Aluminum alloy proportioning and smelting, the intermediate frequency melting furnace is placed in a vacuum environment, zinc, copper, manganese and iron are placed in the intermediate frequency melting furnace, the heating temperature is above 1000°C, the aluminum alloy is prepared, and then smelted for 0.8h to obtain aluminum alloy melt;

[0041] S2: adding titanium, praseodymium, silicon and zirconium into the intermediate frequency smelting furnace, maintaining the temperatu...

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Abstract

The invention belongs to the technical field of aluminium alloy machining and discloses a low pressure aluminium alloy and a preparation method thereof. The low pressure aluminium alloy comprises thefollowing components in parts by weight: 70-80 parts of aluminium, 0.1-0.2 part of titanium, 0.1-0.3 part of praseodymium, 5-10 parts of zinc, 4-8 parts of copper, 2-3 parts of silicon, 4-9 parts of magnesium, 1-2 parts of manganese, 2-4 parts of zirconium and 4-5 parts of iron. The low pressure aluminium alloy is obtained by casting the components by using a low pressure casting method. The low pressure aluminium alloy has the advantages that the corrosion resistance of the low pressure aluminium alloy is high, the corrosion situation in the modern environment can be satisfied, the making method is convenient to implement, has lower cost and is easy to popularize; by adding the manganese to the aluminium alloy, a dispersed phase and a matrix can form a coherent interface so that performance such as hardenability, toughness and corrosion resistance of the alloy can be improved; by adding the zirconium to the aluminium alloy, the recrystallization during alloy hot rolling and solid solution is more effectively hindered to be beneficial for improving the toughness.

Description

technical field [0001] The invention specifically relates to a low-pressure aluminum alloy and a preparation method thereof, belonging to the technical field of aluminum alloy processing. Background technique [0002] Aluminum alloy is a general term for aluminum-based alloys. The main alloying elements are copper, silicon, magnesium, zinc, and manganese, and the secondary alloying elements are nickel, iron, titanium, chromium, and lithium. Aluminum alloy has low density, but relatively high strength, which is close to or exceeds high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel. . Aluminum alloys are divided into two categories: cast aluminum alloys, which are used in the cast state; deformed aluminum alloys, which can withstand pressure processing and have higher mechanical proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C21/14C22C21/16C22C21/18C22C21/08C22C21/00C22C1/02B22D18/04
CPCB22D18/04C22C1/02C22C21/00C22C21/08C22C21/10C22C21/14C22C21/16C22C21/18
Inventor 周建明周建炎
Owner 广东华劲金属型材有限公司
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