Carbon-nanofiber-enhanced light low-carbon-residue water-based paint for evaporative-pattern casting and manufacturing method thereof

A technology of nano-carbon fiber and lost foam casting, which is applied to casting molding equipment, coatings, casting molds, etc. It can solve the problems of product performance defects, easy collapse, and failure to reach, and achieve better quality, improved fluidity, and The effect of improving the coating property

Inactive Publication Date: 2016-04-27
MINGGUANG CITY LIUXIANG PUMP IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The composition of lost foam coatings mainly includes refractory aggregates, adhesives, solvents, suspending agents and various additives. According to the nature of the binder used, it is mainly divided into water-based coatings, alcohol-based coatings, resin coatings, etc. Amon

Method used

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Embodiment

[0011] The coating of this embodiment is made from the following raw materials in parts by weight: 300-mesh magnesium silicate 5, 200-mesh mullite powder 35, colloidal graphite powder 7, 180-mesh aluminum silicate fiber powder 25, nano-carbon fiber 0.1, sodium bentonite 1.5 , white latex 1.5, water-based acrylic resin 1.2, sodium lignosulfonate 0.01, peregal 0.01, nano-cerium dioxide 0.01, sodium carboxymethyl cellulose 0.1, preservative 0.001, defoamer 0.01, soft water 30.

[0012] The preparation method of the coating is as follows:

[0013] (1) First put sodium lignosulfonate, peregal and sodium carboxymethyl cellulose into soft water, stir until completely dissolved, then put into carbon nanofibers and nano-cerium dioxide, and stir at high speed ultrasonic to make them evenly dispersed in the solution, Then add sodium bentonite, mix, grind and disperse for 35min, and the obtained mixed slurry is for later use;

[0014] (2) Put mullite powder, colloidal graphite powder, al...

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PUM

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Abstract

The invention relates to the technical field of evaporative-pattern casting, in particular to a nano-calcium-carbonate-enhanced low-carbon-residue water-based paint for evaporative-pattern casting and a manufacturing method thereof. According to the water-based paint, high-aluminum fine powder, magnesia and brown corundum powder which are different in particle sizes are mixed to serve as a refractory aggregate, so that the water-based paint has good air permeability and high-temperature stability; a mixed suspending agent prepared from nano calcium carbonate, sodium carboxymethylcellulose and other materials can be well mixed with inorganic powder and resin emulsion, so that the fluidity and coating property of the paint are improved effectively, and dimensional stability to heating is enhanced and improved; added nano ceria has oxygen storage capacity, and oxygen can be released in the casting process, so that the oxidative combustion efficiency of plastic is improved, and carbon residues are reduced. Moreover, a coating layer produced from the manufactured paint is stable in performance when heated, not prone to collapsing and breaking, compact and breathable and capable of being stripped off and removed easily; and the number of impurities on the surfaces of manufactured castings is smaller, and quality of the manufactured castings is better.

Description

technical field [0001] The invention relates to the technical field of lost foam casting, in particular to a water-based coating for lost foam casting with nano-carbon fiber reinforced light and low carbon residue and a preparation method thereof. Background technique [0002] Lost foam coating refers to a layer of special coating applied to the outer surface of the pattern during the lost foam casting process. It plays a key role in the casting process. Since the pattern is made of foam, the permeability of the coating , coating strength, rheology and other properties will have a crucial impact on casting products, and the lost foam coating with excellent performance should meet: (1) It can help improve the strength and rigidity of the foam pattern, and prevent the pattern from being damaged and deformed. ; (2) It has an isolation function, separates the molten metal from the model, prevents the molten metal from infiltrating into the dry sand, and prevents the formation of...

Claims

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Application Information

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IPC IPC(8): B22C3/00B22C9/04
CPCB22C3/00B22C9/04
Inventor 刘和明刘和兵
Owner MINGGUANG CITY LIUXIANG PUMP IND
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