Aluminium front cover and manufacturing process thereof

A manufacturing process and aluminum alloy technology, which is applied in the field of aluminum alloy front cover and its manufacturing process, can solve the problems of high engine temperature, non-dense internal structure, and many pores, so as to improve work performance, reduce production costs, and compact internal structure Effect

Inactive Publication Date: 2006-12-13
WENZHOU RUIMING IND
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  • Claims
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Problems solved by technology

This manufacturing process requires high equipment cost, and the aluminum alloy front cover produced has a rough surface, less dense internal structure, more pores, and poor airtightness of the water circulation channel. Add plugging glue to bl

Method used

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Example Embodiment

[0007] The chemical composition of the aluminum alloy front cover material (brand RM-AC4B) of the present invention is calculated by weight, and its composition is: 7.8-8.2% silicon (Si), 2.6-3.0% copper (Cu), 0.25-0.35% magnesium (Mg) , 0.28-0.38% manganese (Mn), the balance is aluminum (Al).

[0008] The chemical composition of the aluminum alloy front cover is calculated by weight, and its impurity content is not more than 0.45% iron (Fe), 0.3% zinc (Zn), 0.2% lead (Pb), 0.2% chromium (Cr), 0.1% Tin (Sn), 0.1% nickel (Ni), 0.1% titanium (Ti).

[0009] The above-mentioned manufacturing process of the aluminum alloy front cover is as follows: first prepare the mold of the front cover (the mold can be reused more than 80,000 times) and its water circulation channel sand cores (including No. 1, No. 2, and No. 3 water circulation channel sand cores, Can only be used once) for use; then the aluminum alloy raw materials prepared in the above ratio are directly smelted in the holding f...

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PUM

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Abstract

The invention discloses an engine aluminum alloy front cover and its manufacturing engineering, in which the chemical composition consists of (mass%): 7.8-8.2% silicon, 2.6-3.0% copper,0.25-0.35% magnesium,0.28-0.38% manganese and the other is aluminum. The manufacturing engineering includes: first preparing die for the front cover and water circulating channel core for inactivity; smelting the aluminum alloy raw material with a perfect allocation according to the said proportion in die-casting furnace and performing aftertreatment deaeration, metamorphic conditioning and temperature administration; when pouring, accurately placing water circulating channel core into front cover die cavity, then pouring the acceptable aluminum alloy liquor into pouring cup on the said die, performing gravity roll-over casting with metallic gravity casting machine to make the aluminum alloy liquor enter die cavity smoothly and steadily; after casting, obtaining the product by cold-setting, impact cleaning and central handling. The said aluminum alloy front cover is of smooth surface, dense internal organization, good air impermeability and fewer holes, which can effectively improve the engine service behavior.

Description

1. Technical field [0001] The invention relates to an aluminum alloy front cover for a gasoline engine and a manufacturing process thereof. 2. Background technology [0002] The front cover is the water cooling channel of the gasoline engine. It is directly installed on the front face of the engine cylinder block. The water pump hole of the cylinder block is directly connected with the water pump hole of the front cover. Its quality will directly affect the working temperature of the engine. affect the performance of the engine. At present, the aluminum alloy front cover of the gasoline engine is made of aluminum alloy 319 (US brand) material for sand casting (ie foundry casting process). This manufacturing process requires high equipment cost, and the aluminum alloy front cover produced has a rough surface, less dense internal structure, more pores, and poor airtightness of the water circulation channel. Add plugging glue to block the air holes, which is a big waste. Whe...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/02B22D21/04C22F1/043
Inventor 韩玉明叶锦瑞徐海登何远杰
Owner WENZHOU RUIMING IND
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