Low-pressure casting and manufacturing technology of aluminum alloy cylinder part

A technology of low-pressure casting and preparation process, which is applied in the field of low-pressure casting preparation technology of aluminum alloy cylinder parts, can solve the problems of many casting processes, high rejection rate, affecting production capacity, etc., so as to reduce production costs, improve production efficiency, and ensure castings. quality effect

Inactive Publication Date: 2015-07-01
QINGDAO YUGUANG PRECISION CASTING FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The casting of aluminum alloy cylinder parts requires at least the steps of configuring aluminum alloy, melting, mold clamping, and reinforcement. In the current pouring process of aluminum alloy cylinder parts, the finished castings are not hard enough, have large pores, and shrinkage and shrinkage cavities It is more serious, not only the casting process is more, which affects the production capacity, but also the scrap rate is high

Method used

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Embodiment

[0016] The low-pressure casting preparation process of the aluminum alloy cylinder part of the present embodiment comprises the following steps:

[0017] (1) Aluminum alloy is prepared, and its material composition mass percentage ratio is: Si: 6%, Mg: 0.4%, Ti: 0.15%, Fe: 0.1%, and the total amount of impurity elements such as Cu, Mn, Zn, Sn, Pb, etc. Not more than 0.4%, the rest is Al;

[0018] (2) Heat the prepared aluminum alloy in a melting furnace to melt. After the alloy is completely melted, adjust the temperature of the molten aluminum to 740°C, and use aluminum titanium boron refiner for refinement treatment. The amount of refiner added is is 0.15% of the total mass of the smelted alloy; adjust the temperature of the molten aluminum to 730°C, and use an aluminum strontium modifier for modification treatment, and the amount of the modifier added is 0.4% of the total mass of the smelted alloy; adjust the temperature of the molten aluminum to 720°C, and use The refinin...

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PUM

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Abstract

The invention discloses a low-pressure casing and manufacturing technology of an aluminum alloy cylinder part. Aluminum alloy materials adopted in the technology comprise, by mass, 6.0 percent to 7.0 percent of Si, 0.3 percent to 0.5 percent of Mg, 0.1 percent to 0.2 percent of Ti, 0.05 percent to 0.15 percent of Fe and the balance of Al. After the materials are melted, thinned, metamorphosed and refined, low-pressure cast moulding is carried out on the materials. Through the liquid ascending, mould filling, pressure maintaining and pressure relieving processes of the low pressure casting, a casting is formed in a mould cavity. After solution treatment and non-complete artificial aging heat treatment are carried out on a casting blank, the low-pressure casing and manufacturing technology has the advantages that the structure is compact, casting defects of pores, porosity shrinkage, cavity shrinkage, slag inclusion and the like are solved, the casing quality is improved, meanwhile, the machining allowance of the casting is small, the material utilization rate is improved, and the manufacturing cost is reduced.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a low-pressure casting preparation process of an aluminum alloy cylinder part. [0003] Background technique [0004] The casting of aluminum alloy cylinder parts requires at least the steps of configuring aluminum alloy, melting, mold clamping, and reinforcement. In the current pouring process of aluminum alloy cylinder parts, the finished castings are not hard enough, have large pores, and shrinkage and shrinkage cavities It is more serious, not only the casting process is more, which affects the production capacity, but also the scrap rate is high. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the purpose of the present invention is to provide a low-pressure casting preparation process for aluminum alloy cylinder parts, which can directly cast aluminum alloy ...

Claims

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Application Information

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IPC IPC(8): B22D18/04C22C21/02C22F1/043
CPCB22D18/04C22C21/02C22F1/043
Inventor 陈玉光
Owner QINGDAO YUGUANG PRECISION CASTING FACTORY
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