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Aluminum alloy material for casting

A technology of aluminum alloy materials and intermediate alloys, which is applied in the field of aluminum alloy materials and can solve the problems of poor comprehensive mechanical properties and high formula cost of cast aluminum alloys

Pending Publication Date: 2021-05-18
湖北华力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an aluminum alloy material for casting, which reasonably solves the problems of poor comprehensive mechanical properties and high formula cost of cast aluminum alloy in the prior art

Method used

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Examples

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Embodiment 1

[0022] The aluminum alloy material for casting in this embodiment is composed of the following substances in weight percentage: Si7.25%, Fe0.35%, Cu 3.2%, Mn 0.4%, Mg 0.35%, Zn 0.25%, Cr 0.02%, Ni 0.15%, Ti 0.16%, Pb 0.04%, Sr 0.008%, the balance is Al and unavoidable impurities. The aluminum alloy material for casting has a tensile strength of 223Mpa, a yield limit of 180Mpa, an elongation of 3.14 and a hardness of 91HBw.

Embodiment 2

[0024] The aluminum alloy material for casting in this embodiment is composed of the following substances in weight percentage: Si7.25%, Fe0.38%, Cu 3.55%, Mn 0.38%, Mg 0.35%, Zn 0.25%, Cr 0.02%, Ni0.15% , Ti 0.16%, Pb 0.05%, Sr 0.008%, the balance is Al and unavoidable impurities. The aluminum alloy material for casting has a tensile strength of 241Mpa, a yield limit of 182Mpa, an elongation of 3.02, and a hardness of 92HBw.

Embodiment 3

[0026] The aluminum alloy material for casting in this embodiment is composed of the following substances in weight percentage: 7.5% Si, 0.42% Fe, 3.3% Cu, 0.36% Mn, 0.38% Mg, 0.25% Zn, 0.02% Cr, 0.15% Ni, Ti 0.16%, Pb 0.06%, Sr 0.008%, the balance is Al and unavoidable impurities. The aluminum alloy material for casting has a tensile strength of 232Mpa, a yield limit of 175Mpa, an elongation of 3.15 and a hardness of 92HBw.

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Abstract

The invention discloses an aluminum alloy material for casting. The aluminum alloy material comprises the following compositions in percentage by mass: 7.2 percent to 7.8 percent of Si, less than or equal to 0.45 percent of Fe, 3.1 percent to 3.6 percent of Cu, 0.2 percent to 0.5 percent of Mn, 0.25 percent to 0.4 percent of Mg, 0.2 percent to 0.3 percent of Zn, less than or equal to 0.04 percent of Cr, 0.1 percent to 0.25 percent of Ni, 0.12 percent to 0.2 percent of Ti, 0.004 percent to 0.01 percent of Sr, less than or equal to 0.1 percent of Pb, and the balance of Al and inevitable impurities. By adopting the aluminum alloy material for casting disclosed by the invention, the problems of poor comprehensive mechanical properties and high formula costs of casting aluminum alloys in the prior art can be reasonably solved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to an aluminum alloy material for casting. Background technique [0002] Casting is a method of smelting metal, making a mold, injecting molten metal into the mold, cooling and solidifying to obtain a metal part blank with a certain shape, size and performance. Most of the raw materials used in traditional casting castings are only a single metal, or several metals are melted and mixed, but the weight is heavy, the strength is average, and the mechanical properties are low, especially in high temperature, high pressure, and corrosive extreme environments for a long time. In the middle, the working life is short, and it is prone to deformation and even fracture. Chromium, titanium, tin, cadmium and other metals can improve the mechanical strength of aluminum alloys, making castings resistant to high temperature and corrosion. Among them, the compounds formed by tin ...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/02
Inventor 叶光华叶天佑
Owner 湖北华力科技有限公司
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