Alcohol-group coating for V-method casting and preparation method thereof

A coating and alcohol-based technology, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of easy precipitation and hardening of slurry or paste alcohol-based coatings, increase the cost of foundry enterprises, and difficult recycling of packaging barrels, etc., to achieve Excellent sand resistance, high production efficiency, and low packaging cost

Active Publication Date: 2012-07-04
NINGBO CANGHAI NEW MATERIALS DEV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] At present, the V-method casting coatings on the market are all alcohol-based slurry or paste coatings. The problems in the use of this type of coatings in production: First, the slurry or paste alcohol-based coatings are easy to precipitate during long-distance transportation Harden

Method used

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Examples

Experimental program
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Effect test

Example Embodiment

[0024] The present invention will be further described in detail below with reference to specific embodiments: a method for preparing the above-mentioned alcohol-based coating for casting by the V method, which is characterized in that it comprises the following steps: 1) A composite slurry is prepared by using a suspending agent, a binder and an alcohol solvent , In terms of weight percentage, the content of the suspending agent is 15%-25%, the content of the binder is 20%-30%, and the rest is alcohol solvent; 2) Weigh the refractory powder and combine the refractory powder The materials are put into the roller blender at one time, and the correct operation of putting and closing the lid must be ensured during the putting process; 3) Start the roller blender, and while rolling the refractory powder, Add the composite slurry that accounts for 10% to 14% of the weight of the refractory powder, and continue rolling; first make the refractory powder in the composite slurry contains...

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Abstract

The invention discloses an alcohol-group coating for V-method casting, wherein the coating is powdery or granulous and is formed by blending 100 parts of fire-resistant powder and 10-14 parts of composite sizing agent by weight. Meanwhile, the invention further discloses a method for preparing the alcohol-group coating for V-method casting. Compared with the prior art, the costing disclosed by the invention is powdery or granulous, so that the advantages of convenience and safety in transportation are achieved; the packaging cost is low because barrels are not required for package; the transportation cost is low because the phenomenon of sediment hardening does not occur during the transportation so as not to result in material scrap; meanwhile, the coating further has the advantages that the adhesion and bond strength of a coating layer is high, the capability of resisting metal fluid machinery and thermal shock is strong, the drying time is short, the production efficiency is high, and the sand cohesiveness resistance is excellent.

Description

technical field [0001] The invention belongs to the technical field of coatings for casting, and in particular relates to an alcohol-based coating for V-method casting and a preparation method thereof, which is applicable to the application of the V-method casting process for mass production of steel and iron castings. Background technique [0002] V method casting is a new generation of physical forming method after mechanical forming and chemical forming. The basic principle is to fill a single dry sand into the sand box with an air pumping chamber, slightly shake it tightly, and then vacuumize the sand mold covered with plastic film on the mold surface and the back of the sand box, and use the pressure difference inside and outside the sand box to make The mold is finalized, then the mold is lifted, the box is closed, and the molten metal is poured while maintaining a vacuum. [0003] Compared with traditional sand casting, its biggest advantage is that the molding sand ...

Claims

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Application Information

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IPC IPC(8): B22C3/02
Inventor 赵溶李远才杨严军
Owner NINGBO CANGHAI NEW MATERIALS DEV
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