Aluminum magnesium alloy

A technology of aluminum-magnesium alloy and weight percentage, which is applied in the field of aluminum-magnesium alloy, can solve the problem that the elongation of castings is difficult to reach more than 10%, achieve good solid solution strengthening, and improve the effect of plastic toughness

Inactive Publication Date: 2010-09-15
常州华晨铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, provide an aluminum-magnesium alloy, and solve the problem that the elongation of the obtained casting is difficult to reach more than 10% when the existing aluminum-magnesium alloy is used as a raw material for casting production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: An aluminum-magnesium alloy is used for casting the front end cover of a high-speed train motor, and the weight percentages of its components are: Mg: 4.2%, Cu: 0.32%, Ti: 0.22%, Fe: 0.085%, Si: 0.09%, the balance is Al, it is melted and cast, and the obtained casting is heat treated according to the requirements, that is, the formed motor front cover casting is obtained, and the sample is sent to the physical and chemical testing center of the state-owned 307 factory. The test results are as follows: tensile strength Rm: 205Mp, lower yield strength R p0.2 : 113Mp, hardness HB: 63.3, elongation A: 10.5%, the properties of the measured motor front cover castings all meet the requirements, especially the elongation meets the requirements of more than 10%, and the casting is judged to be qualified.

Embodiment 2

[0008] Embodiment 2: An aluminum-magnesium alloy is used for casting the rear end cover of a high-speed train motor, and the weight percentages of its components are: Mg: 4.35%, Cu: 0.35%, Ti: 0.235%, Fe: 0.09%, Si : 0.085%, the balance is Al, which is also melted and then cast, and the obtained casting is heat-treated according to the requirements, that is, the molded motor rear end cover casting is obtained. The sample is sent to the physical and chemical testing center of the state-owned 307 factory. The test results are as follows: Tensile strength Rm: 209Mp, lower yield strength R p02 : 115Mp, hardness HB: 63.3, elongation A: 11.6%, the properties of the measured motor rear end cover castings all meet the requirements, especially the elongation meets the requirements of more than 10%, and the casting is judged to be qualified.

[0009] In the process of using aluminum-magnesium alloy as raw material to cast the motor end cover described in the above embodiment, the outer ...

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Abstract

The invention discloses an aluminum magnesium alloy for casting castings with elongation of over 10 percent. The aluminum magnesium alloy comprises the following components in percentage by weight: 3.8 to 4.5 percent of Mg, 0.3 to 0.4 percent of Cu, 0.2 to 0.23 percent of Ti, less than or equal to 0.1 percent of Fe, less than or equal to 0.1 percent of Si and the balance of Al. All properties of the castings meet the requirement by effectively controlling the components of the aluminum magnesium alloy, wherein the control of the adding amount of the Ti is favorable for improving the plasticity and tenacity of the alloy, the reasonable adjustment of the component content of Cu and Mg can ensure that the elongation of the castings is over 10 percent so as to play a good role in solid dissolving strengthening on the alloy, and the strict control of Fe and Si elements belonging to impurities meets the requirement of casting and producing high-end mechanical parts.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to an aluminum-magnesium alloy used for casting castings. Background technique [0002] The main element in aluminum-magnesium alloy is aluminum, and a small amount of magnesium or other metal materials are added to strengthen its hardness, improve its mechanical properties, and meet different use requirements. Therefore, aluminum-magnesium alloys are characterized by their firmness, light weight, and density. It is widely used in the fields of electronics, machinery, construction, etc., with low heat dissipation and strong pressure resistance. It is often used as a raw material for casting mechanical parts in the field of machinery. As a casting, it must not only have a certain resistance Tensile strength, lower yield strength and hardness, especially should have a good elongation rate. In some high-end fields, the elongation rate is usually required to be above 10%. Many measures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08
Inventor 陈新华
Owner 常州华晨铸造有限公司
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