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Graphite paste coating

A graphite paste and coating technology, applied in coating, casting molding equipment, casting molds, etc., can solve the problems of cumbersome preparation operation, difficult to mix uniformly, weak adhesion, etc. mixed effect

Active Publication Date: 2012-07-04
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 ingredients are too complicated, the preparation operation is cumbersome, it is not easy to mix uniformly, and the adhesion is weak, and to provide a simple composition, simple preparation operation, easy to mix uniform, adhesive Strong graphite paste coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of graphite paste paint, its composition and weight ratio are: graphite powder 90, activated bentonite 6, carboxymethyl cellulose sodium mixture 0.5, all the other are water; Also include a kind of liquid epoxy resin in the graphite paste paint, The liquid epoxy resin accounts for 5% of the mass percent of the graphite paste coating; the composition of the sodium carboxymethyl cellulose mixture and its weight ratio are: sodium carboxymethyl cellulose 3, water 100; the graphite paste coating is ointment , and its viscosity is 14.

Embodiment 2

[0022] A kind of graphite paste paint, its composition and weight ratio are: graphite powder 110, activated bentonite 2, carboxymethyl cellulose sodium mixture 0.1, all the other are water; Also include a kind of liquid epoxy resin in the graphite paste paint, The liquid epoxy resin accounts for 2% of the mass percent of the graphite paste coating; the composition and the weight ratio of the sodium carboxymethyl cellulose mixture are: sodium carboxymethyl cellulose 5, water 100; the graphite paste coating is ointment , and its viscosity is 16.

Embodiment 3

[0024] A kind of graphite paste paint, its composition and weight ratio are: graphite powder 100, activated bentonite 4, carboxymethyl cellulose sodium mixture 0.3, all the other are water; Also include a kind of liquid epoxy resin in the graphite paste paint, The liquid epoxy resin accounts for 3% of the mass percent of the graphite paste coating; the composition of the sodium carboxymethyl cellulose mixture and its weight ratio are: sodium carboxymethyl cellulose 4, water 100; the graphite paste coating is ointment , and its viscosity is 15.

[0025] 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 is easy to mix evenly and has strong adhesiveness.

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PUM

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Abstract

The invention discloses a graphite paste coating. The graphite paste coating comprises the following components in part by weight: 90 to 110 parts of graphite powder, 2 to 6 parts of activated bentonite, 0.1 to 0.5 part of sodium carboxymethylcellulose mixture, and the balance of water. The graphite paste coating also comprises liquid epoxy resin, and the liquid epoxy resin accounts for 2 to 5 mass percent of the graphite paste coating. The sodium carboxymethylcellulose mixture comprises the following components in part by weight: 3 to 5 parts of sodium carboxymethylcellulose and 100 parts ofwater. The graphite paste coating is of soft paste, and the viscosity of the graphite paste coating is 14 to 16. The graphite paste coating has the advantages of simple component, simple preparation operation, easy mixing uniformity and strong adhesiveness.

Description

technical field [0001] The invention relates to a coating, in particular to a graphite paste coating, which is particularly suitable for coating the inner and outer surfaces of sand molds for casting. 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 refractory powder with graphite powder, zircon powder, high alumina powder, titanium slag powder, bentonite, silica s...

Claims

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Application Information

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