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Composite environmental protection coating suitable for high chromium white cast iron and preparation method thereof

A technology of high-chromium white cast iron and environmental protection coating, which is applied in casting molding equipment, molds, mold components, etc., can solve the problems of low price and high production cost, and achieve low cost, reduced labor intensity and high refractoriness Effect

Active Publication Date: 2020-06-16
XIANGYANG WU ER WU PUMP IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the production cost is too high due to the use of alcohol-based zircon powder coating when casting high-chromium white alloy slurry pumps in the traditional process, and to provide a high refractoriness, good sand-sticking resistance, and sintering peeling. Alcohol-based composite environmentally friendly refractory coating with good performance, low price and excellent comprehensive performance

Method used

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  • Composite environmental protection coating suitable for high chromium white cast iron and preparation method thereof
  • Composite environmental protection coating suitable for high chromium white cast iron and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Start the reaction kettle with the high-speed disperser, drop into 200kg of ethanol first under stirring; then drop into 100kg of zircon powder (the components are: 70kg of ZrO 2 , 30 kg SiO 2 , particle size is 325 mesh), 200 kg of aluminum silicate powder (components are: 165 kg of Al 2 o 3 , 35 kg SiO 2 , the particle size is 200 mesh), 360 kg of high-purity alumina powder (the composition is: 359 kg of Al 2 o 3 , 1 kg of SiO 2 , particle size is 270 orders), 50 kilograms of sepiolite powder, 18 kilograms of first-grade wood rosin, 35 kilograms of white carbon black, 1 kilogram of cationic surfactant, open high-speed disperser and stir for half an hour; Add 50 kilograms of ethanol at last, After the Baume degree is adjusted to be greater than 90゜Bé, the coating preparation is completed.

Embodiment 2

[0031] Start the reaction kettle with the high-speed disperser, and drop into 190kg of ethanol under stirring; then drop into 135kg of zircon powder (the components are: 90kg of ZrO 2 , 45 kg SiO 2 , particle size is 325 mesh), 170 kg of aluminum silicate powder (components are: 140 kg of Al 2 o 3 , 60 kg SiO 2 , particle size is 200 mesh), 375 kg of high-purity alumina powder (component: 373.5 kg of Al 2 o 3 , 1.5 kg SiO2 2 , particle size is 270 orders), 45 kilograms of sepiolite powder, 18 kilograms of first-grade wood rosin, 35 kilograms of white carbon black, 1 kilogram of cationic surfactant, open high-speed disperser and stir for half an hour; Add 50 kilograms of ethanol at last, After the Baume degree is adjusted to be greater than 90゜Bé, the coating preparation is completed.

Embodiment 3

[0033] Start the reaction kettle with the high-speed disperser, drop into 200kg of ethanol first under stirring; 2 , 40 kg SiO 2 , particle size is 325 mesh), 180 kg of aluminum silicate powder (components are: 145 kg of Al 2 o 3 , 35 kg SiO 2 , particle size is 200 mesh), 370 kg of high-purity alumina powder (component: 369 kg of Al 2 o 3 , 1 kg of SiO 2 , particle size is 270 orders), 42 kilograms of sepiolite powder, 19 kilograms of first-grade wood rosin, 38 kilograms of white carbon black, 1 kilogram of cationic surfactant, open high-speed disperser and stir for half an hour; Add 50 kilograms of ethanol at last, After the Baume degree is adjusted to be greater than 90゜Bé, the coating preparation is completed.

[0034] The coating that each embodiment obtains is tested, obtains data as following table.

[0035] Exterior Density (g / cm 3 )

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Abstract

The invention relates to a compound environment-friendly coating suitable for high-chromium white cast iron and a preparation method thereof, belonging to the field of casting. In the coating of the present invention, the mass percentage of each component is: zircon powder: 10-20%; aluminum silicate powder: 10-25%; high-purity alumina powder: 25-35%; suspending agent: 3-8%; Binder: 2-6%; Modifier: 4-10%; Surfactant: 0.1-0.5%; Solvent: 20-30%; The preparation method of the coating of the present invention is formulated according to the above proportioning relationship, and is stirred 80% of the total mass of the solvent is first put into the reaction kettle; then all the remaining ingredients except the solvent are put into the reaction kettle, and the high-speed disperser is used to stir for more than half an hour; finally, the Baume degree is adjusted with the remaining solvent until the Baume When the beauty degree is greater than 90゜Bé, the coating preparation is completed. The coating has high refractoriness and coating strength, and effectively reduces the casting cost of coating production.

Description

technical field [0001] The invention relates to a compound environment-friendly coating suitable for high-chromium white cast iron and a preparation method thereof, belonging to the field of casting. Background technique [0002] High chromium white alloy slurry pump series products, because of Cr ≥ 30%, poor thermal conductivity, casting temperature, long residence time in high temperature zone after casting, have high requirements for refractory casting refractory coatings, such as refractoriness and stripping. Alcohol-based zircon powder coatings are currently used, and the content of zircon powder is relatively high, but the resources of zircon powder are scarce, the price is too high, and the production cost of castings increases due to dependence on imports. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the production cost is too high due to the use of alcohol-based zircon powder coating when casting high-chromiu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 邓家祥李鹏飞刘云易智华
Owner XIANGYANG WU ER WU PUMP IND
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