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Application method of aluminium scraps in aluminium alloy cylinder cover casting

An application method, an aluminum alloy technology, applied in the field of aluminum scrap recycling, can solve problems such as product quality impact, resource waste, and high oxidation tendency, and achieve the effects of reducing production costs, reducing burning losses, and improving efficiency

Active Publication Date: 2014-08-27
WUHU YONGDA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the aluminum alloy cylinder head requires high strength, it is a typical thin-walled complex part and has high requirements for leakage.
Aluminum shavings will increase the shrinkage tendency of the aluminum alloy cylinder head and affect the leakage of the cylinder head. The characteristics of the aluminum alloy cylinder head product determine that a large amount of aluminum shavings cannot be used in the smelting process. Traditional aluminum alloy smelting, because the aluminum shavings are small, Thin, highly prone to oxidation, serious burning loss during smelting, and a large amount of slag in the molten aluminum after melting, resulting in slag holes and shrinkage porosity in the poured castings; the maximum amount of aluminum chips added should not exceed 10%
That is, if the aluminum scrap containing iron impurities is directly recycled, it will have a great impact on the product quality; the amount of aluminum scrap should not be too much, too much will easily lead to shrinkage and leakage of the casting; if the aluminum scrap is directly discarded, not only It will cause a lot of waste of resources and have a huge impact on the environment

Method used

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  • Application method of aluminium scraps in aluminium alloy cylinder cover casting

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Such as figure 1 Shown, in order to meet the application method of a kind of aluminum shavings of the present invention in aluminum alloy cylinder head casting, comprise the steps:

[0034] S1: Screening and preprocessing

[0035] Screen out aluminum scraps and waste aluminum without iron inserts and store them in categories, put the aluminum scraps into the pretreatment system for water removal, oil removal, and drying;

[0036] S2: open hearth melting

[0037] Put the waste aluminum without iron inserts and the aluminum chips into the melting chamber of the open hearth furnace, heat to 750-790°C, take samples to detect the chemical components, compare the test results with the standard ingredients, and according to the comparison results Calculate the proportion of the aluminum master alloy that needs to be added, add the aluminum master al...

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Abstract

The invention discloses an application method of aluminium scraps in aluminium alloy cylinder cover casting. The method comprises the following four steps of screening and preprocessing; open-hearth furnace smelting; tower-type furnace smelting; and casting; by virtue of arrangement of a preprocessing system, the aluminium scraps are put in the preprocessing system to be dewatered, deoiled and dried; in the tower-type furnace smelting step, the aluminium scraps are directly immersed into molten aluminum when added by virtue of rotation of a twin turbo so as to reduce the burning loss. Proved by production practices, the aluminium scrap using amount of aluminium alloy cylinder cover castings can be up to 50% at present and the castings can completely meet the requirements of salt spray tests and metallographic tests, so that the production cost is effectively reduced and the product benefit is increased.

Description

technical field [0001] The invention relates to the technical field of recycling aluminum shavings, in particular to an application method of aluminum shavings in aluminum alloy cylinder head casting. Background technique [0002] In order to meet the customer's requirements for the performance of the engine cylinder head, and in order to reduce the cost of smelting and improve the production efficiency, various manufacturers are trying to recycle the aluminum shavings generated in the production process, and through continuous production tests to analyze the cylinder head composition and scrap rate Adjustment verification was performed. However, because the aluminum alloy cylinder head requires high strength, it is a typical thin-walled complex part, and has high requirements for leakage. Aluminum shavings will increase the shrinkage tendency of the aluminum alloy cylinder head and affect the leakage of the cylinder head. The characteristics of the aluminum alloy cylinder ...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C21/00B22D21/04
Inventor 吴波钱贵兵李群
Owner WUHU YONGDA TECH
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