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High adhesiveness full mold casting coating and preparation method thereof

A technology of solid casting and adhesion, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of poor high temperature resistance of coatings, improve adhesion, prevent carbon deposition, and have simple preparation methods Effect

Inactive Publication Date: 2018-10-26
ANHUI TONGSHENG RING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scope of application of these two patented technologies is negative pressure compact casting, and the high temperature resistance of the coating is poor, so it can only be suitable for small parts with short high temperature treatment time

Method used

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  • High adhesiveness full mold casting coating and preparation method thereof
  • High adhesiveness full mold casting coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-adhesion solid forging paint, comprising the following raw materials in parts by weight:

[0031] 40 parts of mullite, 5 parts of kyanite, 4 parts of flake graphite, 5 parts of mica, 8 parts of modified bentonite, 3 parts of fused magnesium powder, 1 part of hydroxymethyl cellulose, 2 parts of nano-iron oxide, cryolite 1 part, 4 parts of binder, 0.6 part of surfactant, 0.4 part of defoamer and 0.6 part of preservative.

[0032] The binder is composed of phenolic resin, ethanol and polyvinyl butyral in a mass ratio of 15:250:3.

[0033] The preparation method of modified bentonite is as follows:

[0034] (1) Add calcium-based bentonite to 1.0 mol / liter sodium chloride solution and mix evenly, heat up to 50-60 degrees Celsius, stir and mix at a speed of 400 rpm for 3 hours, leave the suspension for 18 hours, and centrifuge Separation, removal of the supernatant, repeated washing with deionized water 6 times, drying in an oven at 90 degrees Celsius, and grinding t...

Embodiment 2

[0045] A high-adhesion full mold casting paint, comprising the following raw materials in parts by weight:

[0046] 50 parts of mullite, 10 parts of kyanite, 9 parts of flake graphite, 10 parts of mica, 15 parts of modified bentonite, 6 parts of fused magnesium powder, 3 parts of hydroxymethyl cellulose, 5 parts of nano iron oxide, cryolite 3 parts, 7 parts of binder, 1.2 parts of surfactant, 0.8 part of defoamer and 1.2 parts of preservative.

[0047] The binder is composed of phenolic resin, ethanol and polyvinyl butyral in a mass ratio of 15:250:3.

[0048] The preparation method of modified bentonite is as follows:

[0049](1) Add calcium-based bentonite to 1.0 mol / liter sodium chloride solution and mix evenly, heat up to 60 degrees Celsius, stir and mix at a speed of 600 rpm for 3 hours, leave the suspension for 22 hours, and centrifuge, Remove the supernatant, wash it repeatedly 6 times with deionized water, dry it in an oven at 100 degrees Celsius, and grind it throug...

Embodiment 3

[0060] A high-adhesion full mold casting paint, comprising the following raw materials in parts by weight:

[0061] 42 parts of mullite, 6 parts of kyanite, 5 parts of flake graphite, 6 parts of mica, 10 parts of modified bentonite, 4 parts of fused magnesium powder, 1.5 parts of hydroxymethyl cellulose, 3 parts of nano iron oxide, cryolite 1.5 parts, 5 parts of binder, 0.7 part of surfactant, 0.5 part of defoamer and 0.7 part of preservative.

[0062] The binder is composed of phenolic resin, ethanol and polyvinyl butyral in a mass ratio of 15:250:3.

[0063] The preparation method of modified bentonite is as follows:

[0064] (1) Add calcium-based bentonite to 1.0 mol / liter sodium chloride solution and mix evenly, heat up to 55 degrees Celsius, stir and mix at a speed of 500 rpm for 3 hours, leave the suspension for 20 hours, and centrifuge, Remove the supernatant, wash with deionized water repeatedly for 6 times, place in an oven at 95 degrees Celsius to dry, and grind th...

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Abstract

The invention discloses a high adhesiveness full mold casting coating and a preparation method thereof, and relates to a full mold casting coating. The high adhesiveness full mold casting coating comprises the following raw materials according to parts by weight: 40-50 parts of mullite, 5-10 parts of cyanite, 4-9 parts of flake graphite, 5-10 parts of mica, 8-15 parts of modified bentonite, 3-6 parts of electric melting magnesium powder, 1-3 parts of hydroxymethyl cellulose, 2-5 parts of nanometer iron oxide, 1-3 parts of cryolite, 4-7 parts of binder, 0.6-1.2 parts of surface active agent, 0.4-0.8 part of deforming agent and 0.6-1.2 parts of preservative. The casting coating has a stable property under high temperature environments, good wearing resistance and high adhesion through the mutual coordination of the raw materials, and has an excellent protective effect on castings. The preparation method is simple and easy to operate.

Description

technical field [0001] The invention relates to the field of solid mold casting coatings, in particular to a high-adhesion solid mold and a preparation method thereof. Background technique [0002] Foundry coating is a casting auxiliary material that covers the molding and core surface in the casting process to improve its surface refractoriness, chemical stability, resistance to liquid metal erosion, anti-sand sticking and other properties. The casting coating can be made into slurry, paste or In powder form, it can be coated on the surface of mold and core by spraying, brushing, dipping, sulfur and other methods. [0003] Chinese Patent No. 200510071854 discloses a solid casting coating, which is formed by mixing water solvent and solids at a mass ratio of 0.8 to 1:1 for water: solids; wherein the solids are earthy graphite, flakes Graphite, clay and polyvinyl acetate emulsion are composed according to the mass ratio of 25:5:4.5:6. The coating has high temperature resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 蔡锟赵卓
Owner ANHUI TONGSHENG RING
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