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Porous ceramic block, metal-matrix composite and preparation methods of porous ceramic block and metal-matrix composite

A technology of porous ceramics and ceramic slurry, which is applied in the field of composite materials, can solve the problems of less application of new wear-resistant materials, increased labor intensity, and limited performance, and achieve optimized grinding operations, improved work efficiency, and high specific modulus Effect

Inactive Publication Date: 2016-11-09
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main problems in the development of crushers are that there are few new wear-resistant materials used, and the manufacturing process level of crushers is poor.
Crusher often chooses conventional high-chromium cast iron, ultra-high manganese steel, etc. as wear-resistant materials. Due to the limited performance of such traditional wear-resistant materials, the method of regularly replacing wear-resistant parts is often used to prolong the service life of the crusher, resulting in solve the problems of increased labor intensity and low efficiency

Method used

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  • Porous ceramic block, metal-matrix composite and preparation methods of porous ceramic block and metal-matrix composite
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preparation example Construction

[0055] The porous ceramic block prepared by the preparation method of the porous ceramic block provided by the embodiment of the present invention has no cracks and uniform through holes, and the aperture of the through hole in the porous ceramic block is preferably 4-6mm (the strength of the porous ceramic block with this aperture is higher), suitable for As the composite material of metal matrix composite reinforcement, the metal matrix composite can not only retain the main characteristics of the metal matrix, but also obtain properties that the original metal matrix materials do not have through the composite effect. The metal-matrix ceramic composite material made of porous ceramic blocks as reinforcing materials and metal as the matrix material has excellent properties such as high specific strength, high specific modulus, wear resistance, and high temperature resistance. Applying it to crushing equipment can effectively improve Improve the working efficiency of the crush...

Embodiment 1

[0088] Preparation of porous ceramic blocks

[0089] Polyurethane foam with a PPI of 20 is selected as the organic foam,

[0090] Step 1, pretreatment of organic foam

[0091] Step 1.1, soak the organic foam in water, the temperature of the water is 80°C, and the soaking time is two hours,

[0092] Step 1.2, washing the organic foam obtained in step 1.1 with commercially available Blue Moon hand sanitizer,

[0093] Step 1.3, soaking the organic foam obtained in step 1.2 in an acid solution, the concentration of the acid solution is 10wt%, and the soaking time is 6 hours,

[0094] Step 1.4, soaking the organic foam obtained in step 1.3 in an alkali solution, the concentration of the alkali solution is 10wt%, and the soaking time is 6 hours;

[0095] Step 2, preparation of ceramic slurry

[0096] Mix the ceramic powder, binder and solvent evenly, the average particle size of the ceramic powder is 10 μm,

[0097] The weight ratio of ceramic powder, binder and solvent is: the...

Embodiment 2

[0106] Preparation of porous ceramic blocks

[0107] Polyurethane foam with a PPI of 23 is selected as the organic foam,

[0108] Step 1, pretreatment of organic foam

[0109] Step 1.1, soak the organic foam in water, the temperature of the water is 90°C, and the soaking time is two hours,

[0110] Step 1.2, washing the organic foam obtained in step 1.1 with commercially available Blue Moon hand sanitizer,

[0111] Step 1.3, soaking the organic foam obtained in step 1.2 in an acid solution, the concentration of the acid solution is 10%, and the soaking time is 8 hours,

[0112] Step 1.4, soaking the organic foam obtained in step 1.3 in an alkali solution, the concentration of the alkali solution is 10%, and the soaking time is 8 hours;

[0113] Step 2, preparation of ceramic slurry

[0114] Mix the ceramic powder, binder and solvent evenly, the average particle size of the ceramic powder is 20 μm,

[0115] The weight ratio of ceramic powder, binder and solvent is: the ave...

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Abstract

The invention provides a porous ceramic block, a metal-matrix composite and preparation methods of the porous ceramic block and the metal-matrix composite. After organic foam covered with ceramic slurry is dried, evaporated and sintered, the porous ceramic block is obtained, wherein the organic foam is polystyrene foam plastic or polyurethane foam plastic; the ceramic slurry is prepared from ceramic powder, a binder and a solvent, the ceramic powder is aluminum oxide or / and chromic oxide, the binder is an organic binder or an inorganic binder, and the solvent is water or an organic solvent. The preparation method of the porous ceramic block is simple, holes in the ceramic block are evenly distributed, the sizes of the holes are easy to control, it is easier to prepare a metal-matrix composite wear-resistant material from the porous ceramic block, the preparation steps of the composite wear-resistant material are simplified, and distribution of ceramic in a metal matrix can be controlled more conveniently.

Description

technical field [0001] The invention relates to the field of composite materials used in crushers, in particular to a porous ceramic block, a metal matrix composite material and a preparation method thereof. Background technique [0002] In metallurgical mining, building materials, road construction, chemical and silicate industries, crushers are the main equipment for material crushing. With the rapid development of my country's economy, the materials that need to be processed by crushers in these industries increase geometrically every year. There are many factors that affect the crushing process, but they are all related to the performance of crushing equipment. The wear resistance of liners, hammer heads, rollers and roller teeth and other parts that are easy to wear in the crusher has a great impact on the performance of the crusher. [0003] At present, the main problems in the development of crushers are that there are few new wear-resistant materials used, and the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/10C04B35/10C04B35/622
CPCC04B35/10C04B35/622C04B38/10C04B2235/3241
Inventor 米国发许磊霍晓阳王有超邵春娟刘晨历长云王狂飞
Owner HENAN POLYTECHNIC UNIV
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