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Process for producing recycled aluminum-silicon alloy material

A technology of alloy material and production process, which is applied in the field of preparation of aluminum-silicon alloy materials, can solve the problems such as adverse effects on the comprehensive performance of recycled aluminum-silicon alloy materials, and improve the base of recycled aluminum materials, reduce the amount of addition, excellent strength and The effect of elongation

Active Publication Date: 2013-09-11
袁晓东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Refining agents are required in the refining process. At present, the production of recycled aluminum-silicon alloy materials is based on the refining agent used in the production of primary aluminum-silicon alloy materials. Due to the great difference in the properties of recycled aluminum and primary aluminum, primary aluminum Aluminum has high purity, while recycled aluminum contains a large amount of alumina and various compound impurities. Using the refining agent used in primary aluminum for recycled aluminum completely ignores the characteristics of recycled aluminum, which undoubtedly affects the quality of recycled aluminum-silicon alloy materials. Overall performance is adversely affected

Method used

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  • Process for producing recycled aluminum-silicon alloy material
  • Process for producing recycled aluminum-silicon alloy material
  • Process for producing recycled aluminum-silicon alloy material

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Embodiment 1

[0032] The production process of recycled aluminum-silicon alloy materials includes batching, melting and stirring, melting silicon and refining processes. The refining agent used in the refining process is composed of the following components by weight percentage: 15% sodium chloride, 2% fluorosilicic acid Sodium, 3% potassium chloride, 15% sodium carbonate, 35% sodium sulfate, 20% sodium fluoroaluminate, 0.1% calcium fluoride, 9.9% silicon dioxide; the amount of refining agent per ton of melt is 2Kg, the refining temperature The temperature is 620°C, and the refining time is 20 minutes. After the refining process, there is a slurrying process. The slurrying process is to control the temperature of the aluminum-silicon alloy melt obtained by refining to its eutectic temperature + 35°C, and perform electromagnetic stirring on it. The electromagnetic frequency of the electromagnetic stirring 10 Hz, the central magnetic field strength is 30 mg, until the solid mass fraction of t...

Embodiment 2

[0034] The production process of recycled aluminum-silicon alloy materials includes batching, melting and stirring, melting silicon and refining processes. The refining agent used in the refining process is composed of the following components by weight percentage: 40.5% sodium chloride, 18% fluosilicic acid Sodium, 20% potassium chloride, 2% sodium carbonate, 5% sodium sulfate, 6% sodium fluoroaluminate, 8% calcium fluoride, 0.5% silicon dioxide; the amount of refining agent per ton of melt is 4Kg, the refining temperature The temperature is 780°C, and the refining time is 60 minutes. After the refining process, there is a slurrying process. In this slurrying process, the temperature of the aluminum-silicon alloy melt obtained from refining is controlled to its eutectic temperature -35°C, and electromagnetic stirring is performed on it. The electromagnetic frequency of the electromagnetic stirring is The temperature is 40Hz, the central magnetic field strength is 60 mg, until...

Embodiment 3

[0036] The production process of recycled aluminum-silicon alloy materials includes batching, melting and stirring, melting silicon and refining processes. The refining agent used in the refining process is composed of the following components by weight percentage: 30% sodium chloride, 10% fluosilicic acid Sodium, 11.5% potassium chloride, 8.5% sodium carbonate, 20% sodium sulfate, 13% sodium fluoroaluminate, 3% calcium fluoride, 4% silicon dioxide; the amount of refining agent per ton of melt is 3Kg, the refining temperature The temperature is 700°C, and the refining time is 40 minutes. After the refining process, there is a slurrying process. In this slurrying process, the temperature of the aluminum-silicon alloy melt obtained by refining is controlled to its eutectic temperature, and it is electromagnetically stirred. The electromagnetic frequency of the electromagnetic stirring is 25Hz. The central magnetic field strength is 45 mg until the solid mass fraction of the alum...

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Abstract

The invention discloses a process for producing a recycled aluminum-silicon alloy material. The process comprises the following steps of: preparing materials; melting and stirring; melting silicon; refining and pulping, wherein electromagnetic stirring is performed in the pulping process by controlling the eutectic temperature of the refined molten aluminum-silicon alloy to be + / -35 DEG C until the solid mass percentage of the molten aluminum-silicon alloy is between 50 and 65 percent. The process can be used for effectively crushing and refining crystal dendrite, and the comprehensive performance of the recycled aluminum-silicon alloy material can be improved.

Description

technical field [0001] The invention relates to a preparation process of an aluminum-silicon alloy material, in particular to a process method for producing a recycled aluminum-silicon alloy material by using waste aluminum alloy. Background technique [0002] At present, the process of using waste aluminum alloys to produce recycled aluminum-silicon alloy materials includes: batching, melting and stirring, adjusting components, melting silicon, component testing and refining, etc. The recycled aluminum-silicon alloy materials produced by this process are mainly used in The production of motorcycles, general machinery and less important auto parts, because these parts do not have high requirements on the strength and toughness of materials, because it is difficult to meet the requirements of die-casting parts with high comprehensive properties including strength and elongation Therefore, it cannot be used in the field of core precision parts with lightweight, high strength a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/02C22C1/10
Inventor 袁晓东
Owner 袁晓东