Method for manufacturing compressed aluminum alloy housing sample

A technology of aluminum alloy and casing, applied in the field of new energy, can solve the problems of long pouring time, coarse grains of casting body structure, and low production efficiency

Inactive Publication Date: 2012-11-21
江苏迅隆科技发展有限公司
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Problems solved by technology

[0002] At present, the blanks of aluminum alloy shell products used in high-voltage and ultra-high-voltage transmission and distribution power systems in China are mostly castings. The traditional method of casting aluminum alloy shells is to use sand mold low-pressure casting technology. For a long time, there are defects such as low production efficiency and coarse grains of the casting body. Although the minimum pressure of the products produced by the sand low-pressure casting process can reach 0.4-0.5 MPa in the blasting test, it has reached the qualified standard. Because the aluminum alloy shell The strength of the pressure-bearing capacity of the body product is related to the safety of the entire grid operation of the high-voltage and ultra-high-voltage transmission and distribution power system. The pressure capacity of alloy shell products is very difficult to use the sand mold low pressure casting process

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  • Method for manufacturing compressed aluminum alloy housing sample

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Embodiment

[0017] Such as figure 1 As shown, a method for making a sample of a pressurized aluminum alloy shell, the method includes process design 1, making mold 2, modeling core 3, melting and refining 4, combined box casting 5, falling sand cleaning 6, X 10 steps of optical flaw detection 7, heat treatment 8, machining 9 and blasting test. After the 10 steps of the blasting test, the steps of body performance test 11, oxidation slag content analysis 12, body structure compactness analysis 13, body structure pinhole degree analysis 14, revision process design 15 and determination of alloy composition and refining process 16 are also provided. First, process design 1, according to the structure, weight and wall thickness of the aluminum alloy shell product under pressure, select the parting surface, calculate the upper and lower heights; design the size and shape of each part in the gating system, and use filtering Technology, determine the amount of chilling and feeding, and produce th...

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Abstract

The invention relates to a method for manufacturing a compressed aluminum alloy housing sample. The method comprises the following steps of 1, process designing, 2, mold manufacture, 3, mold core manufacture, 4, melting refining, 5, mold assembling and pouring, 6, shakeout cleaning, 7, X-ray flaw detection, 8, heat treatment, 9, mechanical processing and 10, a bursting test. AlSi7Mg0.3, and an aluminum-strontium alloy or / and an aluminum-titanium alloy as refiners are adopted in the melting refining (4). A body performance test (11), oxidizing slag content analysis (12), body microstructure compactness analysis (13), body microstructure pinhole degree analysis (14), a revision process design (15) and an alloy composition determination and refining process (16) are carried out after the bursting test (10). Through the above processes, the compressed aluminum alloy housing sample is obtained. The method has a reasonable process flow and realizes a larger pressure-bearing capacity of a compressed aluminum alloy housing product.

Description

Technical field [0001] The invention relates to a method for pouring and manufacturing a pressurized aluminum alloy shell of aluminum alloy sand mold gravity casting, in particular to a method for manufacturing a pressurized aluminum alloy shell sample. The products of the present invention are mainly used in high-voltage and ultra-high-voltage transmission and distribution power systems, and belong to the fields of new energy, electronic and electrical equipment safety and the like. Background technique [0002] At present, most of the aluminum alloy shell products used in high-voltage and ultra-high-voltage transmission and distribution power systems in China are castings. The traditional method of aluminum alloy shell casting is to complete the sand mold low-pressure casting process. This casting process is due to low-pressure casting. For a long time, there are defects such as low production efficiency and coarse grains of the casting body. Although the products produced by ...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 左清张玉萍刘云华孙昌健苟永钱许成山
Owner 江苏迅隆科技发展有限公司
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