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Preparation technique of inorganic wear resistant aggregate in composite wear-resistant coating material

A wear-resistant aggregate and wear-resistant coating technology, which is applied in coatings, epoxy resin coatings, grain treatment, etc., can solve the problem of unsatisfactory wear resistance of composite wear-resistant coating materials and irregular shapes of inorganic wear-resistant aggregates. Rules, performance can not meet the engineering requirements and other problems, to achieve the effect of large abrasive particle size, good bonding performance, and improve impact resistance

Inactive Publication Date: 2010-10-13
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing composite wear-resistant coating materials have good wear resistance, but they are highly targeted, narrow in scope of application, and expensive, which cannot meet the needs of the domestic market and be accepted by domestic users
The existing composite wear-resistant coating material developed in China has been applied in some occasions. It uses high-alumina ceramic balls and other wear-resistant fillers, but because of the high price of high-alumina ceramic balls and other wear-resistant fillers (more than 80,000 yuan per ton), And due to the limitations of the raw materials used and the production process, the shape of the inorganic wear-resistant aggregate is irregular, and some irregular flakes are contained, which makes the wear resistance of the composite wear-resistant coating material unsatisfactory. In the case of fluid erosion, it will cause a large area of ​​wear-resistant coating to delaminate from the substrate. At the same time, the line speed is high, the abrasive grain size is large, the hardness is high, and the requirements for wear resistance and cavitation resistance are relatively high. In some cases, its performance cannot meet the engineering requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The process route of the present invention is: the filler to be ground such as α-Al 2 o 3 At least one of ceramic balls, high-density corundum or silicon carbide is added to a ball mill for grinding to remove irregular edges and flakes in the filler to be ground. After grinding for 15 to 60 minutes, take it out and grade it as follows Compatibility and mixing: 16 mesh to 30 mesh account for 50 to 60%, 70 mesh to 120 mesh account for 20 to 30%, and 180 mesh to 240 mesh account for 15% to 25%, forming an inorganic wear-resistant aggregate.

Embodiment 2

[0018] As a preferred embodiment of the present invention, the process route of the present invention is: select filler to be ground such as α-Al 2 o 3 At least one of ceramic balls, high-density corundum or silicon carbide is used as a spare; choose zirconia beads containing more than 95% of zirconia, and the particle size of Φ50mm~60mm accounts for 55~65%, and the particle size of Φ15mm~20mm accounts for 20% ~30%, the particle size of Φ5mm~8mm accounts for 10~20% and prepare zirconia beads for standby; according to the mass ratio of zirconia beads:filler to be ground=1:1.5~2, add the ball mill, the installed capacity is 55~65%, After grinding for 15-60 minutes, separate the filler to be ground, and carry out compatibility mixing according to the following gradation: 16-30 mesh accounts for 50-60%, 70-120 mesh accounts for 20-30%, 180-240 mesh Accounting for 15% to 25%, forming inorganic wear-resistant aggregate.

Embodiment 3

[0020] The selected zirconia beads contain 96% zirconia, 60% of the particle size of Φ55mm, 25% of the particle size of Φ18mm, and 15% of the particle size of Φ6mm. Beads and α-Al 2 o 3 Porcelain balls were added into the ball mill at a ratio of 1:2. After grinding for 20 minutes, the filler to be ground was taken out and mixed according to the following gradation: 16 mesh to 30 mesh accounted for 55%, 70 mesh to 120 mesh accounted for 25%, 180 mesh Mesh to 240 mesh accounts for 20%, forming inorganic wear-resistant aggregate.

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Abstract

The invention discloses a process for preparing inorganic wear-resistant aggregate suitable to be used in a composite wear-resistant coating material. The preparation process comprises the following steps: at least one of the fillings to be ground such as alpha-AL2O3 porcelain ball, high-density corundum or carborundum are added in a ball mill for grinding; irregular edges and corners and platelets in the fillings to be ground are removed; when ground for 15 to 60 minutes, the fillings are taken out to undergo compatibility mixing according to the following gradation: 50 to 60 percent of 16 to 30 meshes, 20 to 30 percent of 70 to 120 meshes and 15 to 25 percent of 180 to 240 meshes, thereby forming the inorganic wear-resistant aggregate. The inorganic wear-resistant aggregate prepared by the preparation process is used in the composite wear-resistant coating material to improve the impact resistance, tensile strength and shear strength of the coating material, thereby effectively improving the wear resistance and gas etching resistance of the coating material.

Description

technical field [0001] The invention relates to the technical field of preparation technology of inorganic wear-resistant aggregate in a series of composite wear-resistant coating materials for equipment repair. The composite wear-resistant coating material can be used for equipment and spare parts that resist erosion and wear caused by mixing solid particles and fluids It has excellent wear resistance and anti-corrosion performance, and can be used in mining, mineral processing, metallurgy, chemical industry, water conservancy, electric power, petroleum, coal and other industries. Background technique [0002] In mining, mineral processing, metallurgy, chemical industry, water conservancy, electric power, petroleum, coal and other industrial production, the abrasive particles produced by liquid and gas entraining solid particles have serious erosion and wear on equipment. Equipment and spare parts that are prone to wear and tear mainly include slurry pumps, mud pumps, clean...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12B02C17/16B02C17/20C09D163/00C09D5/00
Inventor 刘厚明廖祥文刘亚川杨进忠陈晓青梁友伟王秀芬
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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