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Aluminum alloy material for special-type high pressure oil pump cases and preparation method thereof

A technology of aluminum alloy materials and high-pressure oil pumps, applied in the field of aluminum alloy materials for special high-pressure oil pump shells and its preparation, can solve the problems of small thermal deformation and poor extrusion molding performance, and achieve high strength and airtightness of finished products Good performance, good wear resistance

Inactive Publication Date: 2014-06-25
ANHUI KING AUTO ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum alloy used for the special high-pressure oil pump shell requires the alloy to have excellent high temperature resistance, small thermal deformation, good wear resistance and good air tightness, but the current aluminum alloy does not have such excellent comprehensive properties, or the casting, forging, extrusion Compression molding performance is not good

Method used

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Embodiment Construction

[0013] An aluminum alloy material for a special high-pressure oil pump housing, which contains chemical elements and their mass percentages: silicon 1.8-2.1, copper 0.5-0.7, magnesium 5.8-6.1, manganese 3.2-3.4, titanium 2.6-2.8, iron 0.9-1.2, Li0.3-0.4, Ba0.03-0.05, bismuth 0.3-0.6, and the balance is aluminum.

[0014] The production method of the aluminum alloy material for the special high-pressure oil pump housing is as follows:

[0015] (1) Prepare pure aluminum ingots and waste aluminum in a ratio of 1:0.4 as the source of aluminum matrix, put pure aluminum ingots into the furnace for melting, remove impurities, deoxidize, use refining agent for one-time refining, and add alloy components for alloying, Then add waste aluminum for melting, add refining agent for secondary refining, test and adjust the content of chemical elements to pass, casting, post-casting heat treatment, etc.;

[0016] (2) The order of batches of alloying elements put into the furnace during the al...

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Abstract

The invention relates to an aluminum alloy material for special-type high pressure oil pump cases, which contains the following chemical components in percentage by mass: 1.8-2.1% of silicon, 0.5-0.7% of copper, 5.8-6.1% of magnesium, 3.2-3.4% of manganese, 2.6-2.8% of titanium, 0.9-1.2% of iron, 0.3-0.4% of Li, 0.03-0.05% of Ba, 0.3-0.6% of bismuth and the balance of aluminum. By adding the magnesium, the alloy has excellent thermal conductivity, high temperature resistance and favorable corrosion resistance. By adding the titanium, copper and iron, the aluminum alloy material has the characteristics of high die casting yield, compact casting, high finished product strength, no crack, high flexibility and favorable air tightness. By adding the silicon, the aluminum alloy material has favorable wear resistance. The aluminum alloy is suitable for special-type high pressure oil pump cases, and has long service life. When the refining agent is used for casting production, the porosity in the casting is lowered by 1-2 degrees, the oxide inclusion content is lowered by 2 levels or so, and the yield is obviously enhanced.

Description

technical field [0001] The invention relates to the field of manufacturing metal alloy materials, in particular to an aluminum alloy material for a special high-pressure oil pump casing and a preparation method thereof. Background technique [0002] Aluminum alloy has low density, high strength, good plasticity, and is widely used. The aluminum alloy used for the special high-pressure oil pump shell requires the alloy to have excellent high temperature resistance, small thermal deformation, good wear resistance and good air tightness, but the current aluminum alloy does not have such excellent comprehensive properties, or the casting, forging, extrusion Compression molding performance is not good. Contents of the invention [0003] The object of the present invention is to provide an aluminum alloy material for a special high-pressure oil pump housing and a preparation method thereof. The copper alloy material has the advantages of high temperature resistance, small therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02C22C1/06C22F1/047
Inventor 王进
Owner ANHUI KING AUTO ELECTRONICS TECH CO LTD
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