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Process and equipment for preparing nanoparticle-reinforced metal matrix composite material

A technology of nano-particles and composite materials, applied in mechanical equipment, heat exchange equipment, rotors, etc., can solve the problems of three-dimensional size nano-materials that need to be further developed, pollution, and the inability to strictly control the reaction process and product performance.

Inactive Publication Date: 2010-09-15
丁家伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: easy to introduce impurities during the preparation process, uneven grain size, ball milling and oxidation will cause pollution
The disadvantages are: the volume fraction of reinforcement is limited (generally no more than 20%), there is the possibility of interface reaction, the distribution of reinforcement is difficult to achieve uniformity, there are pores, and secondary processing is required
The disadvantages are: many process procedures, long preparation cycle, high cost, and little possibility of cost reduction
The disadvantages are: expensive process equipment, extremely low output, and difficulty in manufacturing large parts. If the cooling process is not properly arranged, obvious interface reactions can occur, and the preparation cycle is longer.
The disadvantages are: it is not easy to obtain high product density, and the reaction process and product performance cannot be strictly controlled
The disadvantages are: the process is strict and difficult to master, and the composition and volume fraction of the reinforcing phase are not easy to control
[0031] At present, the application of nanomaterials is still in the initial and exploratory stage. Although various methods have been used to prepare nanomaterials for various purposes, there are some characteristics such as high preparation costs and low yields, which hinder their application in various fields. Applications in various fields, especially the application of three-dimensional nanomaterials are yet to be further developed

Method used

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  • Process and equipment for preparing nanoparticle-reinforced metal matrix composite material
  • Process and equipment for preparing nanoparticle-reinforced metal matrix composite material
  • Process and equipment for preparing nanoparticle-reinforced metal matrix composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Example 1: In Fig. 1, the equipment consists of two systems of nanoparticle synthesis, diffusion, mixing equipment and casting molding equipment, wherein the nanoparticle synthesis, diffusion, and mixing equipment adopts high-energy stirring ball mill standard equipment, and the positive electrode power supply of casting molding equipment 1 , electrode holder 2, consumable electrode 3, low-carbon steel thin-wall sealed steel pipe 4 with pre-mixed nano-powder 16 or cored alloy wire with nano-particle pre-mixed powder 4, slag pool 5, outlet pipe 6. Nanoparticle-reinforced metal matrix composite material 7, electromagnetic stirrer 8, bottom water tank 9, negative power supply 10, high-energy pulse electrode 11, high-energy pulse power supply 12, metal molten pool 13, water-cooled crystallizer 14, water inlet pipe 15, Nanoparticle premixed powder 16, ultrasonic vibrator 17, ingot pumping device 18 are composed.

[0064] 1. Preparation of nanocrystalline particle liquid mixe...

Embodiment 2

[0068] Embodiment 2: In Fig. 2, the casting molding equipment is pouring casting molding equipment system, and the casting molding equipment consists of a metal casting mold 23 installed on the pouring base plate 24, and an electromagnetic stirrer 8 is installed outside the casting mold 23. The upper or lower part of the type 23 is equipped with an ultrasonic vibrator 17, and high-energy pulse electrodes 11 and connection power sources 12 are respectively installed on both sides of the upper part in the mold 23, and an intermediate injection pipe 26 is installed next to the pouring bottom plate 24, and the intermediate injection pipe The center of 26 has pouring runner 25 and links to each other with the hole at the bottom of casting mold 23, is connected with pouring ladle 29 on the top of middle injection pipe 26, is filled with base metal liquid 28 in pouring ladle 29, is installed in pouring ladle 29 Stopper rod equipment 27 forms, and mold material is ferrous metal materia...

Embodiment 3

[0071] Embodiment 3: In Fig. 3, the difference from Embodiment 2 is that the pouring molding equipment is composed of a mold 22, an electromagnetic stirrer 8 is installed outside the mold 22, and an ultrasonic vibrator 17 is installed on the top of the mold 22 , ultrasonic vibrator power supply 21, high-energy pulse electrodes 11 and connection power supply 12 are respectively installed on both sides of the middle part in the mold 22, and a casting ladle 19 is arranged on the top of the casting mold 22, and the matrix molten metal is contained in the pouring ladle 19 20. The material of casting mold 22 is made of refractory material or ferrous metal material.

[0072] When the work starts, one or more low-carbon steel thin-walled sealed steel pipes 4 containing nanoparticle premixed powder 16 or the pressed block 4 of nanoparticle premixed powder 16 that have been prepared are fixed in the center of the mold 22, Or in the casting mold 22 according to a certain interval distan...

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Abstract

The invention discloses a process and equipment for preparing a nanoparticle-reinforced metal matrix composite material. The process comprises the following steps of: mixing reinforcing nanoparticles with matrix metals and a grain growth inhibitor in a stirring ball mill together, and then loading the mixture into a steel pipe; casting the mixture together with the matrix metals in a water cooling crystallizer or casting and forming the mixture together with a molten metal in a casting mould; and performing quick solidification and crystallization after electromagnetic stirring and ultrasonic vibration to ensure that the two phase materials achieve complete metallurgical bonding, wherein because of the electromagnetic stirring and the ultrasonic vibration, the two phase materials are mixed more uniformly, and all properties of the composite material can be further improved. by using the process and the equipment, a production process is simple, the cost is low, the efficiency is high, the product performance is high, the process is easy to control, the external dimensions of products are not limited by the process, and large-sized nanoparticle-reinforced metal matrix composite materials can be manufactured.

Description

technical field [0001] The invention belongs to the technical field of metal matrix composite materials, and relates to a nanometer metal composite material and a preparation method thereof, in particular to a nanoparticle-reinforced metal matrix composite material preparation process and equipment. Background technique [0002] The rapid development of modern science and technology has greatly promoted the technological progress of new materials. With the continuous emergence of new material preparation technologies, new materials continue to rise, and the development of various non-metallic materials (polymer materials, ceramic materials, etc.) has reached unprecedented speed. The advent of engineering plastics put forward the slogan of "challenging steel". In recent years, the plastic-steel ratio in the United States has reached more than 25%; Breaking through the concept and category of traditional ceramics in many aspects, a revolutionary change has occurred in the his...

Claims

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Application Information

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IPC IPC(8): B22D19/00B22D27/20B22D27/02
Inventor 丁刚丁家伟耿德英强颖怀
Owner 丁家伟
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