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Preparation method of anodizable die-casting aluminum alloy

A technology of casting aluminum alloy and anodizing, which is applied in the field of aluminum alloy, can solve the problem that die-casting aluminum alloy cannot be anodized, and achieve the effects of good processing characteristics, reducing volume and realizing miniaturization.

Active Publication Date: 2017-01-04
GUANGZHOU ZHIYUAN ALLOY PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem solved by the present invention is to overcome the disadvantage that the existing die-casting aluminum alloys cannot be anodized, and provide a method for preparing anodized die-casting aluminum alloys

Method used

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Embodiment Construction

[0020] The preparation method of the anodic oxidation die-casting aluminum alloy of the present invention comprises the following steps:

[0021] (1) Proportioning the ingredients, wherein the content of silicon is less than or equal to 0.6%, the content of iron is 0.4%-1.6%, the content of copper is less than or equal to 1%, the content of manganese is less than or equal to 1%, and the content of magnesium Less than or equal to 0.6%, the content of zinc is less than or equal to 0.6%, the content of nickel is 0.3%-1.5%, the content of cobalt is less than or equal to 0.2%, the content of lead is less than or equal to 0.1%, and the content of tin is less than or equal to 0.2% %, the content of cadmium is less than or equal to 0.01%, and the content of each component is calculated according to the weight ratio;

[0022] (2) Clean up and remove impurities in the melting furnace, put aluminum ingots and aluminum-nickel alloys into the melting furnace for melting, and when the molte...

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Abstract

The invention discloses a preparation method of anodizable die-casting aluminum alloy. The preparation method includes following steps: putting aluminum ingot and aluminum-nickel alloy into a smelting furnace for smelting, and adding ferralia when temperature is increased to 830-850 DEG C; stirring molten metal for several times, and standing; adding a magnesium agent; putting hot-mold aluminum ingot and aluminum-nickel alloy into the molten metal, and adding a sodium-free refining agent when the molten metal is cooled to 780-800 DEG C; adding an alterant when temperature of molten alloy is 780-800 DEG C, and stirring the molten alloy to enable the alterant to be completely smelted; deslagging, sufficiently stirring, and taking a sample for laboratory test; feeding nitrogen into the molten alloy; casting if ingredients of the laboratory test are within a set range, and maintaining temperature of the molten metal at 760-770 DEG C during casting. By the preparation method, the defect that anodization of existing die-casting aluminum alloy cannot be realized is overcome.

Description

technical field [0001] The invention relates to the field of aluminum alloys. Specifically, it is a preparation method of die-cast aluminum alloy capable of anodic oxidation. Background technique [0002] Aluminum alloy is a metal material widely used in various fields. In order to make aluminum alloy more corrosion-resistant and to color aluminum alloy parts, aluminum alloy is usually placed in an electrolyte for anodic oxidation, thereby forming an oxide film on its surface , to protect the aluminum alloy and improve the hardness of the aluminum alloy. However, commonly used die-casting alloys such as aluminum-silicon alloys, aluminum-copper alloys, and aluminum-magnesium alloys cannot be anodized and colored. In die-casting aluminum alloys, usually, the content of silicon is as high as 6%-12%, and the content of copper is also high. A high content of silicon will make the oxide film gray, and copper will make the oxide film red, and will damage the quality of the elect...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/02C22C21/08C22C21/10C22C1/03
CPCC22C1/026C22C1/03C22C21/00C22C21/02C22C21/08C22C21/10
Inventor 李新豪陈苏坚李升李旭涛王永科
Owner GUANGZHOU ZHIYUAN ALLOY PROD CO LTD
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