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Quick-drying mold release agent for resin sand casting mold and preparation process thereof

A technology of resin sand and mold release agent, which is applied in the direction of casting molding equipment, casting molds, casting mold components, etc., to achieve the effect of ensuring dimensional accuracy, beautiful castings, and improving appearance

Active Publication Date: 2014-10-29
CHINA ENERGY CONSTR GRP SHAANXI ELECTRIC POWER DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, there is no release agent that can meet the above requirements on the market at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The following process steps are adopted to prepare the release agent of this embodiment:

[0041] 1. According to Table 1, prepare ethyl acetate:dichloroethane as a 1:1 mixed solvent;

[0042] 2. Add low melting point paraffin, rosin, stearic acid, polyethylene wax and vaseline to the mixed solvent according to the ratio in Table 1, stir for 30 minutes, and mix well;

[0043] 3. Add JFC to the above solution according to the ratio in Table 1, and stir evenly.

[0044] Table 1 The composition of the release agent (mass fraction%)

[0045] raw material

Embodiment 2

[0047] The following process steps are adopted to prepare the release agent of this embodiment:

[0048] 1. Prepare ethyl acetate: dichloroethane as a 1:1 mixed solvent according to Table 2;

[0049] 2. Add low melting point paraffin, rosin, stearic acid, polyethylene wax and vaseline to the mixed solvent according to the ratio in Table 2, stir for 20 minutes, and mix well;

[0050] 3. Add JFC to the above solution according to the ratio in Table 2, and stir evenly.

[0051] The composition of table 2 release agent (mass fraction%)

[0052] raw material

Embodiment 3

[0054] The following process steps are adopted to prepare the release agent of this embodiment:

[0055] 1. According to Table 3, prepare ethyl acetate:dichloroethane as a mixed solvent of 1:1;

[0056] 2. Add low melting point paraffin, rosin, stearic acid, polyethylene wax and vaseline to the mixed solvent according to the ratio in Table 3, stir for 10 minutes, and mix well;

[0057] 3. Add JFC to the above solution according to the ratio in Table 3, and stir evenly.

[0058] The composition of table 3 release agent (mass fraction %)

[0059] raw material

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Abstract

The invention discloses a quick-drying mold release agent for a resin sand casting mold and a preparation process thereof. The mold release agent comprises the components by the mass percentage: 5-10% of low-melting-point paraffin, 1-5% of rosin, 1-5% of stearic acid, 0.5-3% of polyethylene wax, 0.5-5% of vaseline, 0.1-1% of JFC, and the balance a mixed solvent, wherein the mixed solvent is a mixture of ethyl acetate and dichloroethane. The mold release agent is used for mold release of the resin sand casting mold, has a significant lubricating effect, can significantly reduce mold release resistance, prolongs the service life of a model, and makes the casting production rate higher. Moreover, the mold release agent is clean and neat, is beneficial for improving a working environment, is safe to human bodies, can achieve one-time coverage and multiple consecutive mold release, and makes the casting production rate higher. The use of the mold release agent can greatly improve the production rate, and the mold release agent has good economic benefits.

Description

technical field [0001] The invention belongs to the technical field of casting and relates to a mold release agent, in particular to a quick-drying mold release agent for resin sand molds suitable for sand mold mold release and a preparation process thereof. Background technique [0002] In foundry production, resin sand molding has good surface quality and high strength; the casting has high dimensional accuracy and clear external contour; the casting surface is smooth and clean, and the appearance quality is good; the structure is compact and the overall quality of the casting is high, so it has been widely used in China. Usually before modeling, in order to separate the resin sand from the model smoothly and obtain a good quality mold, it is necessary to apply a layer of release agent to the surface of the model. The release agent is a functional substance between the model and the mold. When manufacturing a product, it needs to be used in order to release the mold smooth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 郑红梅
Owner CHINA ENERGY CONSTR GRP SHAANXI ELECTRIC POWER DESIGN INST CO LTD
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