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Wear-resistant ceramic roller and preparation method thereof

A technology of wear-resistant ceramics and ceramic rollers, which is applied in the direction of coating, metal material coating technology, etc., can solve problems such as the increase in the mass per unit length of the surface of the conveyed items, the shutdown of the entire equipment production line for maintenance, and the impact on the surface quality of the conveyed items. Achieve the effect of easy large-scale mass production, low equipment requirements and high hardness

Inactive Publication Date: 2020-08-25
徐州华焰特种陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The wear resistance of ceramic rollers is becoming the main factor affecting the conveying efficiency, conveying quality and service life of conveying equipment. Due to wear and corrosion, defects such as rectangular grooves or "V" grooves or corrosion pits appear on the surface of ceramic rollers. When it is being conveyed, it will cause quality defects such as micro-bulges, cracks, and increased mass per unit length on the surface of the conveyed article, which will not only affect the conveying efficiency, but also affect the surface quality of the conveyed article. In severe cases, the entire production line of the equipment will be shut down for maintenance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of roll cores:

[0044] (1) Preparation of ceramic roller prefabricated body: the roller core is composed of the following components in parts by mass: 70 parts of ceramic particles, 20 parts of metal matrix, 15 parts of active elements, and 2 parts of binder; Ceramic particles, in parts by mass, consist of the following components: Al 2 o 3 85 parts, ZrO 2 12 parts, 3 parts of polyvinyl alcohol; according to the mass parts of the formula, add active elements and binders to the ceramic particles, and carry out ball milling and mixing by a ball mill. The mixing time is 60 minutes. Adding a plasticizer, adopting compression molding method to make a ceramic roller body; the forming pressure of said compression molding is 30MPa, the holding time is 2min, and the compactness of said ceramic roller body is 65%;

[0045] Put the ceramic roller blank into the hearth of a tube furnace for sintering, start to heat up from room temperature to 300°C at a rate of 3°...

Embodiment 2

[0051] Preparation of roll cores:

[0052] (3) Preparation of ceramic roller prefabricated body: the roller core is composed of the following components in parts by mass: 75 parts of ceramic particles, 30 parts of metal matrix, 18 parts of active elements, and 3 parts of binder; Ceramic particles, in parts by mass, consist of the following components: Al 2 o 3 82 parts, ZrO 2 13 parts, 3 parts of polyvinyl alcohol; according to the mass parts of the formula, add active elements and binders to the ceramic particles, and carry out ball milling and mixing by a ball mill. The mixing time is 60 minutes. Adding a plasticizer, adopting compression molding method to make ceramic roller body; the molding pressure of said compression molding is 30MPa, the holding time is 3min, and the compactness of said ceramic roller body is 68%;

[0053] Put the ceramic roller blank into the hearth of a tube furnace for sintering, start to heat up from room temperature to 300°C at a rate of 3°C / ...

Embodiment 3

[0059] Preparation of roll cores:

[0060] (5) Preparation of ceramic roller preform: the roller core is composed of the following components in parts by mass: 78 parts of ceramic particles, 22 parts of metal matrix, 20 parts of active elements, and 2 parts of adhesive; Ceramic particles, in parts by mass, consist of the following components: Al 2 o 3 85 parts, ZrO 2 10 parts, 5 parts of polyvinyl alcohol; according to the mass parts of the formula, add active elements and binders to the ceramic particles, and perform ball milling and mixing by a ball mill. The mixing time is 60 minutes. Adding a plasticizer, adopting molding method to make ceramic roller body; the molding pressure of said molding is 35MPa, holding time is 3min, and the compactness of said ceramic roller body is 70%;

[0061] Put the ceramic roller blank into the hearth of a tube furnace for sintering, start to heat up from room temperature to 300°C at a rate of 3°C / min, then raise the temperature to 500°...

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Abstract

The invention discloses a wear-resistant ceramic roller and a preparation method thereof. The ceramic roller comprises a roller core and a wear-resistant layer from inside to outside, and the roller core is prepared from the following components of, in parts by mass, 70 to 80 parts of ceramic particles, 20 to 30 parts of a metal matrix, 15 to 20 parts of active elements and 1 to 5 parts of an adhesive, wherein the ceramic particles are prepared from the following components of, in parts by mass, 80 to 85 parts of Al2O3, 10 to 15 parts of ZrO2 and 1 to 5 parts of polyvinyl alcohol; the metal matrix is prepared from the following components of, in parts by mass, 20 to 15 parts of Cr, 2.0 to 2.5 parts of C, 1.0 to 2.2 parts of Ni, 1.0 to 1.5 parts of Mo, 0.5 to 1.0 part of Mn, 0.2 to 0.6 partof Si, 0 to 0.1 part of P, 0 to 0.05 part of S and the balance of Fe; and the wear-resistant layer is prepared from the following components of, in parts by mass, 85 to 95 parts of Fe55 powder and 5to 15 parts of TiC particles. According to the wear-resistant ceramic roller and the preparation method thereof, the formula is reasonable, the preparation method is simple, the cost is low, the yieldis high, large-scale batch production is easy to realize, and the prepared ceramic roller has the advantages of good wear resistance, long service life and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of ceramic rollers, and in particular relates to a wear-resistant ceramic roller and a preparation method thereof. Background technique [0002] With the continuous development of industrial technology, the performance requirements of production equipment are increasing, and the application of conveyor belts is becoming more and more extensive. Traditional conveyor belts use steel rollers, and the wear cycle is about 3 months. After the rollers are worn, burrs will be generated. Serious damage, or even scrapping the belt, is a huge loss. Since the emergence of ceramic rollers, this situation has been changed. As a wear-resistant material, ceramics greatly prolong the service life of rollers. As long as the bearings are not damaged, ceramic rollers can work normally, reducing the frequency of replacing rollers and improving production efficiency. [0003] The wear resistance of ceramic rollers is becoming t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/12C22C1/10B22D23/04C23C24/10B22F1/00
CPCB22F1/0003C22C29/005C22C29/12C22C1/1015C22C1/1068B22D23/04C23C24/103C22C1/1021
Inventor 杜金标
Owner 徐州华焰特种陶瓷有限公司
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