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Preparing method of anodic oxidation die-casting aluminum alloy

A casting aluminum alloy and anodizing technology, which is applied in the field of aluminum alloy, can solve the problems that die-casting aluminum alloy cannot be anodized, and achieve good anodizing effect, excellent processing characteristics and die-casting characteristics, and good corrosion resistance.

Active Publication Date: 2016-12-07
GUANGZHOU ZHIYUAN ALLOY PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

[0019] The following introduces the preparation method of the anodizable die-casting aluminum alloy of the present invention, comprising the following steps:

[0020] (1) Proportioning the ingredients, wherein the content of silicon is less than or equal to 0.6%, the content of iron is 0.8%-1.8%, the content of copper is less than or equal to 1%, the content of manganese is 1.7%-3.3%, magnesium The content of zinc is less than or equal to 0.7%, the content of zinc is less than or equal to 3.5%, the content of lead is less than or equal to 0.1%, the content of tin is less than or equal to 0.2%, and the content of cadmium is less than or equal to 0.01%. is a ratio calculated by weight;

[0021] (2) Clean and remove impurities in the furnace, put aluminum ingots into the furnace for melting, and when the molten metal is heated to 880°C-900°C, put in iron and manganese agents;

[0022] (3) Stir the molten metal multiple times, and leave it to stand after each stirring;

[0023] ...

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Abstract

The invention discloses a preparing method of an anodic oxidation die-casting aluminum alloy. The preparing method comprises following steps: an aluminum ingot is put into a smelting furnace to be smelted, and when the temperature rises to 880 DEG C to 900 DEG C, an iron agent and a manganese agent are put into the smelting furnace; molten metal is repeatedly stirred, and after stirring each time, standing is carried out; manganese and zinc are put into the molten metal to be smelted, and the molten metal is stirred; when the temperature of molten alloy ranges from 780 DEG C to 800 DEG C, a refining agent is added for refining and slag removal; after sufficient stirring, a sample is taken out to be subject to the test; nitrogen is led into the molten metal to achieve gas removal; if the tested component is within the set range, an alterant is added into the molten metal, and stirring and standing are carried out; pouring is carried out, and during pouring, the temperature of the molten metal is kept at 780 DEG C to 800 DEG C. The preparing method of the anodic oxidation die-casting aluminum alloy is provided and solves the technical problem that an existing die-casting aluminum alloy cannot be subject to anodic oxidation.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C21/00C22C21/10
CPCC22C1/026C22C21/00C22C21/10
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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