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Heat-resistant graphite paste paint

A technology of high-temperature-resistant graphite paste, applied in coatings, casting molds, cores, etc., can solve the problems of cumbersome preparation operations, difficulty in mixing uniformly, weak fire resistance, etc., and achieve simple preparation operations, strong fire resistance, and easy mixed effect

Active Publication Date: 2011-01-12
WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems existing in the prior art that the composition is too complicated, the preparation operation is cumbersome, the fire resistance is weak, it is not easy to mix uniformly, and the adhesion is weak, and to provide a kind of simple composition, easy preparation operation, fire resistance High temperature resistant graphite paste coating with strong resistance, easy mixing and strong adhesion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of high-temperature-resistant graphite paste coating, its composition and weight ratio are: graphite powder 70, kaolin 30, carboxymethyl cellulose sodium mixture 8, the rest is water; The high-temperature-resistant graphite paste coating also includes a Refractory powder, the refractory powder accounts for 20% of the mass percentage of the graphite paste coating; the composition and weight ratio of the refractory powder are: magnesia powder 30, alumina powder 10, graphite powder 20, quartz powder 50; carboxymethyl The components of the sodium cellulose mixture and their weight ratios are: 20 parts of sodium carboxymethyl cellulose and 100 parts of water.

Embodiment 2

[0023] A kind of high-temperature-resistant graphite paste coating, its composition and weight ratio are: graphite powder 80, kaolin 20, carboxymethyl cellulose sodium mixture 2, the rest is water; The high-temperature-resistant graphite paste coating also includes a Refractory powder, the refractory powder accounts for 10% of the mass percentage of the graphite paste coating; the composition and weight ratio of the refractory powder are: magnesia powder 10, alumina powder 30, graphite powder 50, quartz powder 30; carboxymethyl The components of the sodium cellulose mixture and their weight ratios are: 10 parts of carboxymethyl cellulose sodium and 100 parts of water.

Embodiment 3

[0025] A kind of high temperature resistant type graphite paste coating, its composition and its weight ratio are: graphite powder 75%, kaolin 25%, carboxymethyl cellulose sodium mixture 5, the rest is water; The high temperature resistant type graphite paste coating also includes a Refractory powder, the refractory powder accounts for 15% of the mass percentage of the graphite paste coating; the composition and weight ratio of the refractory powder are: magnesia powder 20, alumina powder 20, graphite powder 35, quartz powder 40; carboxymethyl The composition and weight ratio of the sodium cellulose mixture are as follows: 15 parts of sodium carboxymethyl cellulose and 100 parts of water.

[0026] It can be seen from the above that the present invention not only has simple ingredients and is easy to prepare and operate, but also has strong fire resistance, is easy to mix uniformly, and has strong cohesiveness.

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Abstract

The invention relates to a graphite paste paint which comprises the following components in portions by weight: 90-110 portions of graphite powder, 2-6 portions of activated bentonite, 0.1-0.5 portion of sodium carboxymethyl cellulose mixture and the balance of water. The graphite paste paint also comprises a liquid epoxy resin, and the liquid epoxy resin accounts for 2-5 wt% of graphite paste paint. The sodium carboxymethyl cellulose mixture comprises the following components in portions by weight: 3-5 portions of sodium carboxymethyl cellulose and 100 portions of water. The graphite paste paint is in the form of soft paste, and the viscosity of the paste is 14-16. The invention has the advantages of simple components, easy preparation operation, easy uniform mixing and high adhesiveness.

Description

technical field [0001] The invention relates to a coating, in particular to a high-temperature-resistant graphite paste coating, which is particularly suitable for coating the inner and outer surfaces of casting sand molds. Background technique [0002] With the rapid development of the foundry industry, the requirements for the surface quality of casting workpieces are getting higher and higher, and the requirements for sand surface coatings are also increased. Generally, uniform quality, excellent adhesion, strong water and heat resistance must be required, and It is stable at room temperature and high pressure, easy to paint, and can prevent defects such as sand sticking and sand inclusion during casting, so as to obtain castings with smooth surfaces. [0003] The Chinese patent publication number is CN1082466A, and the invention patent disclosed on February 23, 1994 discloses a kind of refractory powder with graphite powder, zircon powder, high alumina powder, titanium s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 浦巧生
Owner WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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