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High-plasticity aluminum alloy processing technology

A processing technology and aluminum alloy technology, which is applied in the field of high plasticity aluminum alloy processing technology, can solve the problems of low plasticity, shrinkage, and incomplete degassing and purification of aluminum-silicon alloy materials, so as to meet service requirements, improve plasticity, and crystallization. grainy effect

Inactive Publication Date: 2018-01-19
新沂市中诺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the hypoeutectic aluminum-silicon alloy, on the one hand, due to the large crystallization temperature interval, the mushy zone is wide during the solidification process of the alloy, which is prone to shrinkage defects, and on the other hand, the degassing and purification are not complete, resulting in There are serious void defects in the hypoeutectic alloy castings, which leads to the low plasticity of the existing Al-Si alloy materials.

Method used

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  • High-plasticity aluminum alloy processing technology

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Experimental program
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Effect test

Embodiment 1

[0014] A high plasticity aluminum alloy processing technology, the method comprises the following steps:

[0015] Step 1. Use 39 parts of Al, 13 parts of Si, 1.4 parts of Cu, 2.6 parts of Zn, 2 parts of Fe, and 0.6 parts of Sr as smelting materials, put Al, Zn and Si into the smelting furnace, heat to 780 ° C, and make it Melt into a melt, then add Cu, Fe and Sr to the melt with a gas carrier, keep stirring at a constant temperature for 10 minutes, then adjust the temperature to 750 ° C, blow argon into the melting furnace to refine the mixed melt for 16 minutes, and remove Scum on the liquid surface to obtain a mixed melt;

[0016] Step 2. Send the mixed melt into the intermediate frequency furnace, raise the temperature to 1200°C in an environment filled with nitrogen, and add 3.4 parts of TiO 2 -ZrO 2 Composite metal powder and 1.7 parts of Pb, keep stirring at constant temperature for 8 minutes, then send the material into the injection molding equipment, adjust the temp...

Embodiment 2

[0023] 27 parts of Al, 11 parts of Si, 1.4 parts of Cu, 2.6 parts of Zn, 2 parts of Fe, and 0.6 parts of Sr are used as melting materials, and Al, Zn and Si are put into the melting furnace, heated to 780 ° C, and melted into molten Then add Cu, Fe and Sr to the melt with a gas carrier, keep stirring at a constant temperature for 10 minutes, then adjust the temperature to 750°C, blow argon into the melting furnace to refine the mixed melt for 16 minutes, and remove the liquid floating Slag, obtain mixed melt; All the other steps are identical with embodiment 1.

Embodiment 3

[0025] 33 parts of Al, 14 parts of Si, 1.4 parts of Cu, 2.6 parts of Zn, 2 parts of Fe, and 0.6 parts of Sr are used as melting materials, and Al, Zn and Si are put into the melting furnace, heated to 780 ° C, and melted into molten Then add Cu, Fe and Sr to the melt with a gas carrier, keep stirring at a constant temperature for 10 minutes, then adjust the temperature to 750°C, blow argon into the melting furnace to refine the mixed melt for 16 minutes, and remove the liquid floating Slag, obtain mixed melt; All the other steps are identical with embodiment 1.

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Abstract

The invention discloses a high-plasticity aluminum alloy processing technology. The two elements of silicon and aluminum are used as an alloy main body, and a certain amount of Cu, Zn and Sr are addedand hot working treatment is carried out so as to prepare the aluminum alloy with high plasticity. According to the high-plasticity aluminum alloy processing technology, the two elements of silicon and aluminum are used as the alloy main body, and the certain amount of Cu, Zn and Sr are added and the hot working treatment is carried out, thus a compact metal-rich intermetallic compound with uniform and dense crystal grains and uniform component and dispersed distributed on a matrix and a defect-free tissue are obtained, the plasticity of the alloy can be remarkably improved on the basis thatthe strength of the alloy is not reduced.

Description

technical field [0001] The present invention relates to a high-plasticity aluminum alloy processing technology, which belongs to the field of inorganic metal materials. Background technique [0002] Existing aluminum alloy materials usually have good tensile strength and yield strength, but the plasticity is low, and the general elongation is not more than restricted. During the production of aluminum alloy die castings, the alloy liquid and the mold will adhere, and the castings will be easily deformed when they are ejected, resulting in unqualified castings. Defect conditions, such as holes, slag defects, etc. For the hypoeutectic aluminum-silicon alloy, on the one hand, due to the large crystallization temperature interval, the mushy zone is wide during the solidification process of the alloy, which is prone to shrinkage defects, and on the other hand, the degassing and purification are not complete, resulting in There are serious void defects in the hypoeutectic alloy...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/10
Inventor 李刚
Owner 新沂市中诺新材料科技有限公司
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