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Preparation method of high-performance water-based casting paint

A casting coating, high-performance technology, applied in casting molding equipment, coatings, casting molds, etc., can solve the problems of poor chemical stability, poor coating strength, poor high temperature resistance, etc., to achieve easy peeling, improve casting quality, reduce The effect of production costs

Inactive Publication Date: 2017-08-11
SILVER ANHUI FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of the market economy, various foundries continue to expand the market, and put forward higher requirements for product quality, but the existing water-based casting coatings generally have low suspension rate, poor leveling, poor coating strength, and high temperature resistance. Poor performance, poor chemical stability and other problems, it is difficult to meet market requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method for high-performance water-based casting coatings, comprising the following steps:

[0037] (1) Weigh refractory powder, binder, suspending agent, additives and water according to the mass ratio of 10:1:0.6:0.2:8;

[0038] (2) Take water and suspending agent equivalent to 1 / 3 of the total amount and place it in a high-speed disperser, stir at a speed of 400r / min for 10 minutes, and then use a colloid mill to grind at a speed of 1000r / min for 6 minutes to obtain a suspension agent aqueous solution;

[0039] (3) Put the remaining water and binder in a high-speed disperser, and stir for 7 minutes at a speed of 300r / min to obtain a binder aqueous solution;

[0040](4) Add refractory powder to the suspension agent aqueous solution prepared in step (2), first stir at a speed of 500r / min for 14min, and then grind at a speed of 2000r / min until the particle size is ≤20μm; then add viscose The aqueous binder solution and additives are stirred for 6 minutes ...

Embodiment 2

[0064] A preparation method for high-performance water-based casting coatings, comprising the following steps:

[0065] (1) Weigh refractory powder, binder, suspending agent, additives and water according to the mass ratio of 12:1.5:0.7:0.3:10;

[0066] (2) Take water and suspending agent equivalent to 1 / 3 of the total amount and place it in a high-speed disperser, stir at a speed of 600r / min for 8 minutes, and then use a colloid mill to grind at a speed of 1200r / min for 4 minutes to obtain a suspension agent aqueous solution;

[0067] (3) Put the remaining water and binder in a high-speed disperser, and stir for 6 minutes at a speed of 450r / min to obtain a binder aqueous solution;

[0068] (4) Add refractory powder to the suspension agent aqueous solution prepared in step (2), first stir at 800r / min for 11min, then grind at 2500r / min until the particle size is ≤20μm; then add viscose The aqueous binder solution and additives are stirred at a speed of 1000r / min for 4 minutes...

Embodiment 3

[0092] A preparation method for high-performance water-based casting coatings, comprising the following steps:

[0093] (1) Weigh refractory powder, binder, suspending agent, additives and water according to the mass ratio of 15:2:0.8:0.4:12;

[0094] (2) Take water and suspending agent equivalent to 1 / 2 of the total amount and place it in a high-speed disperser, stir at a speed of 800r / min for 5 minutes, and then grind with a colloid mill at a speed of 1500r / min for 3 minutes to obtain a suspension agent aqueous solution;

[0095] (3) Put the remaining water and binder in a high-speed disperser, and stir for 4 minutes at a speed of 600r / min to obtain a binder aqueous solution;

[0096] (4) Add refractory powder to the suspension agent aqueous solution prepared in step (2), first stir at 1000r / min for 8 minutes, then grind at 3000r / min until the particle size is ≤20μm; then add viscose The aqueous binder solution and additives are stirred for 3 minutes at a speed of 1200r / mi...

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Abstract

The invention discloses a preparation method of high-performance water-based casting paint. According to the preparation method of the high-performance water-based casting paint, a hectorite thickening suspending agent is wrapped with self-prepared complex-phase refractory powder containing mullite / cordierite / anorthite and an acrylic acid / acrylic amide / 2- acrylic amide-based tetradecane sulfonic acid / N-dodecyl acrylic amide quadripolymer and is matched with a bonding agent prepared from polyvinyl alcohol, hydroxypropyl distarch phosphate, Pulullan and propylene glycol alginate, and other auxiliaries, so that the high-performance water-based casting paint meeting the use requirement is prepared; the prepared high-performance water-based casting paint has extremely high paint strength and suspensibility and excellent high-temperature resistance, leveling performance, anti-flowing performance and chemical stability; and a coating obtained after the paint is smeared is uniform and smooth in surface and can be stripped and fall easily after being cast, cleaning is easy, the surface of a casting is smooth and clean after being cleaned, the phenomenon of sand burning is completely avoided, the quality of the casting is improved, and the production cost is reduced for an enterprise.

Description

technical field [0001] The invention relates to a preparation method of a high-performance water-based casting paint, which belongs to the technical field of paint manufacturing. Background technique [0002] Foundry coatings are generally composed of five components such as refractory aggregates, suspending agents, carriers, binders and additives. Foundry coatings are auxiliary materials coated on the surface of mold cavities or sand cores. Their main functions are: (1 ) Reduce or prevent defects such as sand sticking and pores on the surface of the casting to obtain a casting with a smooth appearance; (2) Reduce the surface roughness of the casting; (3) Improve the surface strength of the casting; (4) Control the cooling rate of the casting; (5) Shield harmful elements (6) Changing the surface composition and properties of castings to meet special performance and requirements; (7) Good economic benefits can also be obtained. According to statistics, the use of coatings can...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 谷和文丁思潮
Owner SILVER ANHUI FOUNDRY