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Processing method of sand core in engine aluminum alloy cylinder metal mould low-pressure casting

A technology of low pressure casting and processing method, applied in the direction of core, casting molding equipment, metal processing equipment, etc., can solve problems such as looseness and cracks, and achieve the effect of low moisture content, simple steps, and prevention of pores and looseness

Active Publication Date: 2009-08-05
SHANGHAI AISHIDA AUTOMOTIVE COMPONENTS
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Problems solved by technology

[0007] The purpose of the present invention is to provide a treatment method for the sand core in the low-pressure casting of the metal mold of the aluminum alloy cylinder body of the engine, so as to solve the problems such as sand inclusion, pores, looseness, cracks and the like that often occur in the casting process of the aluminum alloy cylinder body

Method used

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  • Processing method of sand core in engine aluminum alloy cylinder metal mould low-pressure casting
  • Processing method of sand core in engine aluminum alloy cylinder metal mould low-pressure casting
  • Processing method of sand core in engine aluminum alloy cylinder metal mould low-pressure casting

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Embodiment Construction

[0018] In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the present invention will be further described below in combination with specific illustrations, taking the sand core of the oil channel as an example.

[0019] refer to figure 1 , the oil passage sand core 1 (coated sand hot core) in the metal mold low-pressure casting of the engine aluminum alloy cylinder body is divided into a large core head 2 and a sand core rod 3. Before the oil passage sand core 1 is used for casting, the following method is used: To process:

[0020] Firstly, the surface of the sand core 1 in the oil channel should be dip-coated with an alcohol-based paint with a Baume degree of 30-50 to prevent mechanical sand sticking when the low-pressure cast aluminum alloy is filled and solidified under pressure, and can also effectively prevent sand inclusions. .

[0021] The alcohol-based paint used was Voseco Alcohol-Based Paint 460....

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Abstract

The invention relates to a casting technique, in particular to a method for processing a metal mold low-pressure casting medium sand core for an aluminum alloy cylinder of an engine, wherein a method for coating a coating layer, removing water content and drilling vent holes is adopted to process the sand core so as to achieve the aim of preventing phenomena of sand inclusion, air holes, looseness, cracks, and the like.

Description

technical field [0001] The invention relates to a casting technology, in particular to a method for processing sand cores in low-pressure casting of an engine aluminum alloy cylinder body. Background technique [0002] The cylinder block is recognized as a cutting-edge technology in the domestic foundry industry, and the aluminum alloy diesel engine cylinder block is one of its main representative parts. The complex structure, large wall thickness difference, cast iron cylinder liner and closed water jacket structure lead to This product is still unable to produce cast aluminum cylinder blocks that meet the performance requirements in China, and defects such as pores and shrinkage are very easy to occur during production. [0003] The cylinder block is one of the key parts of the diesel engine, and the aluminum alloy diesel engine is one of the important symbols of the light weight of the automobile engine. Its quality directly affects the performance and service life of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/10
Inventor 俞启荣王建伟
Owner SHANGHAI AISHIDA AUTOMOTIVE COMPONENTS
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