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Method for preparing alloy material by using ultrasonic cavitation process and obtained alloy material

An alloy material and ultrasonic technology, applied in the field of metallurgy, can solve the problems of non-heritable tissue, complicated process, unstable tissue and so on.

Inactive Publication Date: 2021-05-28
BEIJING COMPO ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing alloy materials, which avoids the shortcomings of the traditional method, and solves the problems of complicated processes, high equipment requirements, easy introduction of impurities, uneven microstructure, and microstructure under heating. It is easy to grow, the tissue is unstable during service, and the tissue is not heritable. At the same time, the method has simple equipment, short process flow, high efficiency and low cost, and is suitable for industrial production.

Method used

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  • Method for preparing alloy material by using ultrasonic cavitation process and obtained alloy material
  • Method for preparing alloy material by using ultrasonic cavitation process and obtained alloy material
  • Method for preparing alloy material by using ultrasonic cavitation process and obtained alloy material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] like figure 1 The flow shown:

[0033] Put 4 kg of Sn-5% Sb alloy in the graphite melting furnace of the smelting-ultrasonic cavitation integrated equipment, and heat it to 300°C under the protection of argon atmosphere to completely melt the alloy and form a uniform liquid phase melt; The temperature of the melt was raised to 550°C to keep the overall temperature of the melt uniform; the ultrasonic cavitation equipment was turned on and the frequency was adjusted to 800kHz, and the ultrasonic cavitation was broken and dispersed for 60 minutes. During this process, cavitation bubbles were generated, and the growth process was as follows: figure 2 As shown, the process of bubble generation, bubble growth, bubble explosion, and new micronucleus formation has been experienced. During this period, the particle size of the bubbles changes as follows: image 3 shown; after that, the ultrasonic cavitation equipment is turned off; the melt is poured into an iron mold for cool...

Embodiment 2

[0038] Put 3kg of Bi-10%Sb alloy in the graphite smelting furnace of the smelting-ultrasonic cavitation integrated equipment, and heat it to 400°C under the protection of argon atmosphere to completely melt the alloy and form a uniform liquid phase melt; The temperature of the melt is raised to 700°C to keep the overall temperature of the melt uniform; turn on the ultrasonic cavitation equipment and adjust the frequency to 750kHz; after 90 minutes of ultrasonic cavitation crushing and dispersion, turn off the ultrasonic cavitation equipment; pour the melt into sand molds for Air-cooling, obtain the melt structure transformation Bi-10%Sb alloy bar, obtain such as Figure 5 organization shown.

Embodiment 3

[0043]Put 10kg of Al-18% Si alloy in the graphite smelting furnace of integrated smelting-ultrasonic cavitation equipment, and heat it to 760°C under the protection of nitrogen atmosphere to completely melt the alloy and form a uniform liquid phase melt; Increase the temperature of the melt to 950°C to keep the overall temperature of the melt uniform; turn on the ultrasonic cavitation equipment and adjust the frequency to 1000kHz; after 30 minutes of ultrasonic cavitation crushing and dispersion, turn off the ultrasonic cavitation equipment; pour the melt into an iron mold for cooling , to obtain the melt structure transformation Al-18%Si alloy casting special-shaped parts, such as Image 6 organization shown.

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Abstract

The invention relates to a method for preparing an alloy material by using an ultrasonic cavitation process and an obtained fine-grain alloy material. The method for preparing the alloy material comprises the following steps of: performing ultrasonic cavitation crushing treatment on a molten alloy, and then shaping to form the alloy material, wherein in the ultrasonic cavitation crushing treatment, the frequency of ultrasonic dispersion equipment is 100-1,000kHz, and the speeds of generated shock waves and micro-jet are 30-110m / s, so that the motion acceleration of the molten alloy reaches 30-100 times of gravitational acceleration. The method solves the problems of complex process, high equipment requirement, easy introduction of impurities, non-uniform refined tissues, easy growth of the tissues due to heating, instability of the tissues in the service process, non-heredity of the tissues and the like in the traditional method; and meanwhile, the method has the advantages of readily available raw materials, simple equipment, short process flow, high efficiency and low cost, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for preparing an alloy material by using an ultrasonic cavitation process and the obtained fine-grained alloy material. Background technique [0002] The structure and performance of alloy products depend on the original structure of the ingot. Compared with the ingot with coarse grain structure, the ingot with fine grain structure has a series of advantages: the cutting amount during machining is reduced, and the yield is improved; the ingot with uniform and fine structure has small casting stress, which makes the ingot The plastic deformation ability of the alloy is improved; the semi-finished product made of ingot with fine grain structure has higher mechanical properties; so it is very necessary to refine the structure of the alloy. [0003] The traditional metallurgical microstructure refinement treatment method is mainly to add a small amount of refiner. With ...

Claims

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Application Information

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IPC IPC(8): C22B9/02C22C1/02C22C13/02C22C12/00C22C21/02
CPCC22B9/026C22C1/02C22C13/02C22C12/00C22C21/02C22C1/026Y02P10/20
Inventor 林卓贤杨铭徐蕾刘建贺会军王志刚安宁赵朝辉张江松卢茂成朱学新
Owner BEIJING COMPO ADVANCED TECH