Release agent of sand mould and sand core and preparing process thereof

A technology of release agent and sand core, which is applied in cores, casting molding equipment, casting molds, etc., and can solve the problems of increasing the service life of molds

Inactive Publication Date: 2008-06-18
SHENYANG HYATON FOUNDRY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increase mol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 150kg of 200# solvent oil, 20kg of organic bentonite paste (manufactured by Shenyang Foundry Materials Research Institute), into the feed tank of the FG250 type disperser, stir at 600r / min for 5min, add 25kg of calcium stearate, and 4kg of iron oxide red at 800r / min Stir at 500r / min for 5min, then add 0.7kg of 30% rosin ethanol solution and stir for 5min at 500r / min, after stirring evenly, add the mixed slurry into the SK20-1 sand mill, disperse and load it into a barrel.

Embodiment 2

[0020] Add 50kg of 120# solvent oil, 30kg of organic bentonite paste (manufactured by Shenyang Foundry Materials Research Institute) into the FG-250 type disperser bucket and stir for 5min at 600r / min, add 24kg of calcium stearate, 6kg of zinc stearate, hard 6kg barium ester, 6kg iron oxide red, stir for 5min at 800r / min, add 0.9kg of phenolic resin and stir for 5min at 500r / min, then disperse the slurry with SK20-1 sand mill and pack it into barrels.

Embodiment 3

[0022] Add 200# solvent oil 120kg organic bentonite paste 20kg (manufactured by Shenyang Foundry Materials Research Institute) into the disperser and stir for 5min at a speed of 600r / min, add 6kg of calcium stearate, 6kg of zinc stearate, 6kg of barium stearate, hard Add 5kg of aluminum acetate, 5kg of hydroxyaluminum distearate, and 4kg of red iron oxide into the disperser bucket and stir for 5 minutes at 800r / min, then add 0.5kg of glycerin rosin ester and stir for 5min at 500r / min, and pour the slurry into SK20 The -1 type sand mill further disperses, and the output is loaded into barrels.

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PUM

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Abstract

Disclosed is a release agent used for sand mold and sand core, which is characterized in that the release agent is made from the compound of stearate, iron oxide red, organobentonite paste, binder and solvent oil. The quality percentage of the main chemical composition is: stearate:12 to 49, iron oxide red: 2 to 8, organobentonite paste: 10 to 40, binder: 0.3 to 2; and the rest is solvent oil. Using the release agent can greatly reduce the bonding power and the mold release resistance of mold and core on the die set. Thus the using period of the die set is increased.

Description

technical field [0001] The invention relates to casting technology, and in particular provides a release agent for sand molds and sand cores and a preparation method of the release agent. Background technique [0002] At present, the foundry industry widely uses synthetic binders for modeling and core making. The binders used in it include: acid-cured phenolic resin, acid-cured furan resin, urethane no-bake resin, ester-cured basic phenolic resin, ester-cured casting water glass, carbon dioxide hardened basic resin, methyl formate hardened basic resin , amine hardened cold box resin. The sand molds and sand cores of the above processes are formed and hardened in the mold. When the sand mold or sand core is separated from the mold, due to the strong adhesion and friction between the sand mold, the surface of the sand core and the mold, it is difficult to remove the mold, and it is easy to cause sand molds and sand cores. Damage, increase the amount of repair of the type and...

Claims

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Application Information

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IPC IPC(8): B22C3/00
Inventor 余明伟
Owner SHENYANG HYATON FOUNDRY MATERIAL
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