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Composition and application of crystal whisker of hexa potassium titanate, hot spraying microspheres, manufacturing method, equipment and application

A technology of potassium hexatitanate and a composition is applied in the field of microspheres containing potassium hexatitanate whiskers and the field of manufacture thereof, and can solve the problems of no fluidity, unsmooth powder feeding, small size and the like

Active Publication Date: 2007-11-21
上海凯林新技术实业公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the potassium hexatitanate whisker has a needle-like crystal structure and has no fluidity. During the spraying process, the powder feeding cannot be smooth, and the feeding to the nozzle is intermittent, and continuous feeding cannot be formed, so the coating cannot be formed.
In addition, the size of potassium hexatitanate whiskers is too small. Under the conditions of high temperature, high pressure and high speed of spraying equipment, most of the whiskers will fly out, unable to deposit and form a coating

Method used

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  • Composition and application of crystal whisker of hexa potassium titanate, hot spraying microspheres, manufacturing method, equipment and application
  • Composition and application of crystal whisker of hexa potassium titanate, hot spraying microspheres, manufacturing method, equipment and application
  • Composition and application of crystal whisker of hexa potassium titanate, hot spraying microspheres, manufacturing method, equipment and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Mix micron-sized potassium hexatitanate whiskers, polyethylene oxide urethane and water in a mixer in a weight ratio of 1:0.25:0.5 to form a paste mixture. The average length of the micron-sized potassium hexatitanate whiskers is 20 microns, and the average diameter is 1 micron. The resulting paste mixture was added to a brick-shaped mold to fill the cavity of the mold and heated at 1000° C. for 30 minutes to form a brick-shaped part. This part is used to insulate, not to transfer heat.

Embodiment 2

[0080] Mix micron-sized potassium hexatitanate whiskers, polyvinyl alcohol and water in a mixer in a weight ratio of 1:0.06:4 to form a pasty mixture. The average length of the micron-sized potassium hexatitanate whiskers is 1 micron, and the average diameter is 0.1 micron. The resulting paste mixture was put into a brick-shaped mold, filled the cavity of the mold, and heated at 100° C. for 5 hours to form a brick-shaped part. This part is used to insulate, not to transfer heat.

Embodiment 3

[0082] Mix micron-sized potassium hexatitanate whiskers, polyethylene oxide and water in a weight ratio of 1:0.20:0.8 in a mixer to form a paste mixture. The average length of the micron-sized potassium hexatitanate whiskers is 10 microns, and the average diameter is 0.8 microns. Apply the resulting paste mixture to the surface of metallic zinc by brushing, and heat at 200°C for 4 hours to form a protective coating of zinc.

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Abstract

This invention involves a composite of potassium hextitanate whiskers and its applications, which contain needle-like microscale potassium hextitanate whiskers, water soluble adhesive and water, with a weight ratio of 1:0.06-0.25:0.5-4, and can be used to prepare microspheres for the thermal spraying technology. This invention also describes the process and equipment for preparing thermal spraying microspheres and their applications. The average diameter of the said thermal spraying microspheres, which comprise needle-like microscale potassium hextitanate whiskers and water soluble adhesive with a weight ratio of 1:0.06-0.25, is in the range of 10-80mum. The process for preparing the microspheres comprises the steps of: mixing the needle-like microscale potassium hextitanate whiskers, water soluble adhesive and water according to a weight ratio of 1:0.06-0.25:0.5-4; sending the mixture into a centrifugal atomizer; spraying the mixture by the rotational sprayer of the centrifugal atomizer to a hot-air atmosphere and dewatering to form solid microsphers. The solid microspheres can form high-performance thermal spraying coatings, which can be used in the thermal spraying technology. The said equipment comprises a draught blower, a heater, a storing tank, a centrifugal atomizer and a drying tower.

Description

technical field [0001] The present invention relates to a composition containing potassium hexatitanate whiskers and its application, and also relates to a microsphere containing potassium hexatitanate whiskers for thermal spraying, a manufacturing method thereof, and equipment specially used for the method. And the purposes of this microsphere. Background technique [0002] The metallurgical industry is a major industry in our country. A large number of rolls are needed in the metallurgical industry, such as furnace rolls (CAL.CGL), hot rolls, cold rolls, guide rolls, backup rolls, etc. These rollers need to be used in harsh processing conditions and processing environments, often in high temperature, high pressure, high speed or corrosive environment. Therefore, these rollers need to have high temperature resistance, wear resistance and corrosion resistance. In addition, since these rolls are used to process metal products with high surface quality, such as steel sheets...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00B05D7/14B05D1/10B21B27/10
Inventor 林惠令张毅张志敏张军
Owner 上海凯林新技术实业公司