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High-strength and high-abrasion-resistant low-expansion-coefficient aluminum-based alloy

A low expansion coefficient, aluminum-based alloy technology, applied in the field of aluminum-based alloys, to achieve excellent mechanical properties, excellent wear resistance and low expansion coefficient indicators, and low production costs

Active Publication Date: 2016-07-13
海阳鹏程压铸厂
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The components prepared by using zinc-aluminum alloy as the prior art cannot meet the required mechanical properties, the main reason is that the alloy strength and wear resistance cannot meet the requirements, and The expansion coefficient of zinc aluminum alloy is too large
For example: the nut of the press often has the problem of internal teeth breaking; and for the worm gear of the reducer and the needle cylinder of the knitting machine, the same phenomenon occurs on the external teeth

Method used

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  • High-strength and high-abrasion-resistant low-expansion-coefficient aluminum-based alloy

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Embodiment Construction

[0018] Below in conjunction with embodiment further illustrate the present invention.

[0019] The three embodiments of the present invention are respectively cast according to the specific alloy composition in Table 1, and the technological process is as follows: aluminum ingots, zinc ingots, copper, bismuth, and silicon are melted, degassed, pressed into magnesium blocks, strontium is degenerated, titanium and boron are degenerated, rare earths are degenerated, and degassing is performed. Gas, slag, casting.

[0020] The specific process is: heating aluminum ingots, zinc ingots, copper, bismuth, and silicon, and other alloys in a resistance furnace, degassing after melting, pressing into magnesium blocks, strontium metamorphism, titanium boron metamorphism, and then rare earth metamorphosis, secondary degassing and slag removal Post-cast castings.

[0021] Table 1 Sample chemical composition (mass%)

[0022] alloy Al Cu Mg Bi Si Sr Ti B Ce Zn and...

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Abstract

The invention provides a high-strength and high-abrasion-resistant low-expansion-coefficient aluminum-based alloy.The alloy is aluminum-based alloy containing aluminum, zinc, copper, magnesium, bismuth, titanium, boron, strontium, rare earth and other inevitable impurity elements.The high-strength and high-abrasion-resistant low-expansion-coefficient aluminum-based alloy has good cutting performance, excellent mechanical properties, low expansion coefficient and low production cost, has the competitive advantages both at home and abroad and can replace brass, tin bronze and zinc-based alloy, and the production costs of enterprises are greatly reduced.

Description

technical field [0001] The invention relates to an aluminum-based alloy, in particular to an aluminum-based alloy with high strength, high wear resistance and low expansion coefficient. technical background [0002] Because of its good wear resistance, copper alloys have been extensively studied, but due to their low room temperature strength and large expansion coefficient, their application range is greatly limited. [0003] Because of the advantages of low relative density, low coefficient of friction, good shock absorption and non-magnetic properties, and easy cutting without sparks, zinc-aluminum alloys have gradually become excellent substitute materials for copper alloys. Zinc-aluminum alloy has low cost, simple melting process and excellent mechanical properties and casting properties, so it has been widely used at home and abroad. [0004] The components prepared by using the zinc-aluminum alloy of the prior art cannot meet the required mechanical properties, main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C30/06
CPCC22C21/10C22C30/06
Inventor 程鹏程文睿
Owner 海阳鹏程压铸厂
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