A kind of powder casting coating and its preparation and application method

A casting coating and powder technology, applied in casting molding equipment, coating, casting mold, etc., can solve the problems of short storage period, low bonding strength and high packaging requirements of finished coatings, achieve fast uniformity, and enhance contact opportunities. , easy to disperse effect

Inactive Publication Date: 2018-11-13
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The finished alcohol-based casting coating products have the following problems: (1) It contains 10% to 40% alcohol, which is flammable and explosive. (2) The storage period of the finished coating is short, and the product is easy to deteriorate, such as hardening, the adhesive fails, and the bonding strength is reduced; (3) The packaging requirements are high, and there are special requirements for logistics and transportation, such as special hazardous chemicals Transported by a transport vehicle, it is required to be handled with care during operation, and no inversion is allowed, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Weigh 94 kg of 325 mesh zircon powder;

[0021] (2) Prepare 3.3 kg of 200-mesh sodium-based bentonite, 0.95 kg of 200-mesh calcium-based bentonite, 0.72 kg of 200-mesh rosin, 0.28 kg of 200-mesh phenolic resin, and 0.66 kg of 150-mesh low-viscosity polyvinyl butyral (viscosity of 5 seconds) kg, 0.09 kg of 200 mesh high viscosity polyvinyl butyral (viscosity of 200 seconds);

[0022] (3) Put the powdery material weighed in the first two steps into the mixer, start the machine and mix for 20 minutes to get the powdery coating, and pack it out to get the product.

[0023] When in use, take 100 kg of powdered paint and add it to the mixer (blade is rod-shaped), then take 10 kg of alcohol, 0.1 kg of penetrant fatty alcohol polyoxyethylene ether, first add the penetrant into the alcohol and stir well before use, start the mixer, While stirring, add alcohol mixed with penetrating agent until the addition is complete, continue stirring for 5 minutes to obtain a paste, then...

Embodiment 2

[0028] The first step, takes by weighing 93 kilograms of 400 mesh quartz powders;

[0029] The second step is to prepare 4 kg of 270-mesh sodium bentonite, 1.14 kg of 270-mesh calcium-based bentonite, 0.75 kg of 325-mesh rosin, 0.23 kg of 200-mesh phenolic resin, and 180-mesh low-viscosity polyvinyl butyral (viscosity of 8 seconds) 0.7 kg, 200 mesh high viscosity polyvinyl butyral (viscosity of 200 seconds) 0.18 kg;

[0030] Step 3: Add the powdery material weighed in the first two steps into the mixer, turn it on and mix it for 20 minutes to get the powdery coating, and pack it out to get the product;

[0031] When in use, take 100 kg of powdered paint and add it to the mixer (blade is rod-shaped), then take 12 kg of alcohol, and 0.12 kg of penetrant fatty alcohol polyoxyethylene ether, first add the penetrant into the alcohol and stir well before use, start the mixer, While stirring, add alcohol mixed with penetrating agent until the addition is complete, and continue stirr...

Embodiment 3

[0036] The first step, weigh 93 kilograms of 400 mesh white corundum powder;

[0037] The second step is to prepare 4.2 kg of 325-mesh sodium bentonite, 0.93 kg of 325-mesh calcium-based bentonite, 0.79 kg of 325-mesh rosin, 0.24 kg of 325-mesh phenolic resin, and 200-mesh low-viscosity polyvinyl butyral (viscosity of 5 seconds) 0.7 kg, 0.14 kg of 150 mesh high viscosity polyvinyl butyral (viscosity of 250 seconds);

[0038] Step 3: Add the powdery material weighed in the first two steps into the mixer, start the machine and mix for 20 minutes to get the powdery coating, and pack it out to get the product;

[0039] When using, take 100 kg of powdered paint and add it to the blender (the blade is rod-shaped), then take 15 kg of alcohol, and 0.15 kg of penetrant fatty alcohol polyoxyethylene ether, first add the penetrant into the alcohol and stir well before use, start the blender, and While stirring, add alcohol mixed with penetrating agent until the addition is complete, con...

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Abstract

The invention discloses a powdery casting coating and a preparing and using method thereof, and belongs to the field of sand mold casting coatings. The powdery casting coating comprises components including, by mass percent, 92 to 94% of refractory powder with meshes of 200 to 400, 3.2 to 4.6% of sodium bentonite, 0.93 to 1.3% of calcium bentonite, 0.72 to 0.83% of rosin, 0.23 to 0.29% of phenolicresin, 0.66 to 0.8% of low-viscosity polyvinyl butyral and 0.09 to 0.18% of high-viscosity polyvinyl butyral. The raw materials are evenly mixed according to the mass ratio, the powdery casting coating is obtained, and only common weaving bags need to be used for packaging. Before the powdery casting coating is applied to painting casting, alcohol and a penetrating agent are added for stirring, and a liquid coating is made. The obtained coating still has the various qualified properties of a traditional alcoholic-group coating, and the use effect of the coating is not affected.

Description

technical field [0001] The invention relates to a sand casting coating, in particular to a powder casting coating and its preparation and application method. Background technique [0002] As a quick-drying coating, alcohol-based casting coatings are widely used in foundry companies. The finished alcohol-based casting coating products have the following problems: (1) It contains 10% to 40% alcohol, which is flammable and explosive. (2) The storage period of the finished coating is short, and the product is easy to deteriorate, such as hardening, the adhesive fails, and the bonding strength is reduced; (3) The packaging requirements are high, and there are special requirements for logistics and transportation, such as special hazardous chemicals When transported by a transport vehicle, it is required to be handled with care, and no inversion is allowed. If alcohol is not used at all in the production of paint, and no other liquid materials are used, and the product is packag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
Inventor 张友寿夏露黄晋晏骏玮龙威李四年
Owner HUBEI UNIV OF TECH
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