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Method for producing wear-resistant composite lining plate

A composite lining, mixing and stirring technology, applied in the directions of rotors, cylinders, heat exchange equipment, etc., can solve the problems of limited service life, high molding costs, high production maintenance and use costs, avoid direct impact, and strengthen bonding performance. , good formability

Active Publication Date: 2017-08-29
YANGZHOU ELECTRIC POWER EQUIP MFG FACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of integral casting is very high, and the wear resistance of castings is not ideal, and the service life is limited
Although the method of secondary surfacing welding can save some costs, the surfacing layer is easy to fall off when it encounters a working environment with poor coal quality
Production maintenance and use costs are relatively high

Method used

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  • Method for producing wear-resistant composite lining plate
  • Method for producing wear-resistant composite lining plate
  • Method for producing wear-resistant composite lining plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Fused zirconia corundum particles with a particle size of 2mm are selected, mixed with 4wt% water glass and stirred evenly, and prefabricated through a mold into a cylindrical ceramic block with a diameter of 15mm and a height of 48mm (one end has a conical core with a height of 8mm). 1. After the ceramic block is formed, it is dried in an environment of 250°C for 1 hour, and then sintered at 800°C for 15 minutes, then cooled in the furnace, and then demolded after complete cooling. Using resin sand molding, the prefabricated cylindrical ceramic blocks are evenly arranged at the bottom of the cavity, the distance between the ceramic blocks is 15mm, and the distance between the four walls of the cavity is 20mm, and the steel wire mesh 3 is placed on the top of the ceramic block. Two springs 4 are evenly distributed on the upper end of the lower box sand mold, and the upper end surface of the spring is flush with the upper end surface of the lower box sand mold. Two ingate...

Embodiment 2

[0030] Fused zirconia corundum particles with a particle size of 2.5mm are selected, mixed with 4.25wt% water glass and stirred evenly, and preformed into a cylindrical shape with a diameter of 15mm and a height of 48mm (one end has a conical core with a height of 8mm) through a mold Ceramic block 1, the ceramic block is dried at 275°C for 1.5 hours after molding, then sintered at 850°C for 15 minutes, then cooled in the furnace, and demoulded after complete cooling for use. Using resin sand molding, the prefabricated cylindrical ceramic blocks are evenly arranged at the bottom of the cavity, the distance between the ceramic blocks is 15mm, and the distance between the four walls of the cavity is 20mm, and the steel wire mesh 3 is placed on the top of the ceramic block. Two springs 4 are evenly distributed on the upper end of the lower box sand mold. The upper end surface of the spring is flush with the upper end surface of the lower box sand mold. Two ingates are opened on the...

Embodiment 3

[0033] Fused zirconia corundum particles with a particle size of 3mm are selected, mixed with 4.5wt% water glass and stirred evenly, and prefabricated through a mold into a cylindrical ceramic with a diameter of 15mm and a height of 48mm (one end has a conical core with a height of 8mm). Block 1, the ceramic block is dried at 300°C for 1 hour after molding, then sintered at 900°C for 15 minutes, then cooled in the furnace, and then demoulded after complete cooling. Using resin sand molding, the prefabricated cylindrical ceramic blocks are evenly arranged at the bottom of the cavity, the distance between the ceramic blocks is 15mm, and the distance between the four walls of the cavity is 20mm, and the steel wire mesh 3 is placed on the top of the ceramic block. Two springs 4 are evenly distributed on the upper end of the lower box sand mold, and the upper end surface of the spring is flush with the upper end surface of the lower box sand mold. Two ingates 5 are opened on the upp...

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Abstract

The invention discloses a method for producing a wear-resistant composite liner plate. The method comprises the steps that 1) fused zirconia corundum particles with the particle size of 2-3 mm are selected and are mixed with 5-4.5wt% of water glass, the mixture is uniformly stirred and is prefabricated into a cylindrical ceramic block through a mold, and after being formed, the ceramic block is dried for 1-2 hours in an environment with the temperature of 250-300 DEG C, is sintered at 800-900 DEG C for 10-15 min, then is cooled along with a furnace and is demolded for use after being cooled completely. According to the method, the ceramic particles and metal matrix are reasonably and effectively combined, the wear resistance of ceramic is ingeniously utilized, the operation is convenient, the formability is good, and the large-scale production is facilitated; meanwhile, the shape of the ceramic prefabricated block and the distribution of the ceramic prefabricated block in the sand mold are reasonably designed, and therefore the combination of metal liquid and the ceramic block can be effectively guaranteed; and an inner sprue is formed in the upper end, and therefore direct impact on the ceramic prefabricated block can be avoided, and meanwhile, the combination performance of metal and the ceramic prefabricated block can be further enhanced.

Description

technical field [0001] The invention relates to a method for producing a wear-resistant composite liner. Background technique [0002] In industries such as electric power, cement, metallurgy, and mining, wear-resistant liners are widely used as the main wear-resistant parts of coal mills, and their wear-resistant properties directly affect the production efficiency and operating costs of coal mills. At present, there are many researches on wear-resistant liners at home and abroad, including integral casting molding, prefabricated parts mosaic molding, and the continued use after resurfacing on worn castings. The overall casting cost is very high, and the wear resistance of the casting is not ideal, and the service life is limited. Although the method of secondary surfacing welding can save some costs, the surfacing layer is easy to fall off when it encounters a working environment with poor coal quality. Production maintenance and use costs are relatively high. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/00C22C37/06
CPCB22D19/00C22C37/06
Inventor 蔡军陈珍山吴春光徐远蒙李蔚何凌云张龙飞徐超夏义如
Owner YANGZHOU ELECTRIC POWER EQUIP MFG FACTORY CO LTD
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