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Expendable pattern casting (EPC) cast iron coating and preparation method thereof

A technology of lost foam casting and cast iron, which is used in casting molding equipment, coatings, molds, etc., can solve problems such as unsatisfactory high temperature resistance, poor rheology, and insufficient coating viscosity, and prevent filler precipitation, The effect of reducing cost and increasing strength

Inactive Publication Date: 2019-07-30
曹博海
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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 exactly in order to make up for the deficiencies in the prior art, and provides a kind of EPC lost foam cast iron coating and preparation method thereof, and it has the advantage that coating viscosity is high and coating rheology is good, has solved existing EPC lost foam The performance of cast iron coatings in high temperature resistance is not ideal, and there are problems of insufficient coating viscosity and poor rheology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of EPC lost foam cast iron coating, its preparation method is as follows:

[0027] First take 40 parts of water and put it into the mixer, then put in 2 parts of vinegar-acrylic emulsion, 1 part of n-octanol, 0.04 parts of aluminum sulfate and 15 parts of bauxite in turn and stir for 10 minutes to obtain mixture A, which is left for ten hours and then used. Mix 0.1 part of CMC, 1 part of sodium lignosulfonate, and 0.5 part of talc powder evenly, then slowly add to the mixture A after stirring, the stirring speed of the mixture A is 600-800r / min, and continue stirring for a hour, finally add 1 part of defoamer and 0.3 part of surfactant, and stir again for 15 minutes to obtain EPC lost foam cast iron coating.

Embodiment 2

[0029] A kind of EPC lost foam cast iron coating, its preparation method is as follows:

[0030] First take 54 parts of water and put it into the mixer, then put in 3 parts of vinegar-acrylic emulsion, 2 parts of n-octanol, 0.07 parts of aluminum sulfate and 25 parts of bauxite in turn and stir for 15 minutes to obtain mixture A, which is left for ten hours and then used. Mix 0.2 parts of CMC, 2 parts of sodium lignosulfonate, and 1 part of talcum powder evenly, and then slowly add it to the mixture A after stirring. The stirring speed of the mixture A is 600-800r / min, and continue stirring for a hour, finally add 2 parts of defoamer and 0.6 part of surfactant, and stir again for 15 minutes to obtain EPC lost foam cast iron coating.

Embodiment 3

[0032] A kind of EPC lost foam cast iron coating, its preparation method is as follows:

[0033] First take 68 parts of water and put it into the mixer, then put in 5 parts of vinegar-acrylic emulsion, 3 parts of n-octanol, 0.09 parts of aluminum sulfate and 30 parts of bauxite in turn and stir for 20 minutes to obtain mixture A, which is left for ten hours and then used. Mix 0.3 parts of CMC, 3 parts of sodium lignosulfonate, and 1.5 parts of talc powder evenly, then slowly add to the mixture A to be used after stirring, the stirring speed of mixture A is 600-800r / min, and continue stirring for a hour, finally add 3 parts of defoamer and 1 part of surfactant, and stir again for 15 minutes to get EPC lost foam cast iron coating.

[0034] current technology

[0035] The preparation method includes: weighing 3.4% calcium-based bentonite, 0.04% sodium carbonate and 0.91% attapulgite, stirring at a speed of 100 rpm to obtain the raw material; combining 2.65% aluminum sulfate and ...

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Abstract

The invention discloses an expendable pattern casting (EPC) cast iron coating which relates to the technical field of coatings. The EPC cast iron coating is prepared through the steps of firstly feeding 40 to 68 parts of water into a stirring machine; then sequentially feeding 2 to 5 parts of vinyl acetate-acrylic emulsion, 1 to 3 parts of n-caprylic alcohol, 0.04 to 0.09 part of aluminum sulfateand 15 to 35 parts of bauxite, and stirring for 10 to 20 minutes to obtain a mixture A; standing for 10 hours for standby use; and then uniformly mixing 0.1 to 0.3 part of CMC, 1 to 3 parts of sodiumlignin sulfonate and 0.5 to 1.5 parts of talcum powder, and slowly adding into the mixture A for standby use after stirring, wherein the stirring speed of the mixture A is 600 to 800r / min. The EPC cast iron coating has the advantages of high chemical stability and favorable physical performance; and through adding a thickening agent, a rheological property is adjusted, the coating is thickened, afiller is prevented from being precipitated, the rheological property in the construction process is controlled, and the cost can be further reduced.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an EPC lost foam cast iron coating and a preparation method thereof. Background technique [0002] EPC is a precise forming process without margin, which is characterized by the use of foamed plastics that disappear when it meets metal as the pattern. The size error caused by the combination of core blocks is reduced. The existing lost foam casting coating is a dispersion system composed of a variety of materials with different properties. It is required that the coating has good process performance, work performance, quality stability and application. Paint reproducibility. [0003] Paint is coated on the surface of the object to be protected or decorated, and can form a continuous film firmly attached to the object to be coated, usually based on resin, oil or emulsion, with or without adding pigments, fillers, and adding corresponding additives , a viscous liquid prepared wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 曹博海
Owner 曹博海
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