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A kind of quick-drying release agent for resin sand casting mold and its preparation process

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

Active Publication Date: 2016-08-24
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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PUM

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Abstract

The invention discloses a quick-drying release agent for resin sand casting molds and a preparation process thereof. The release agent comprises 5-10% of low melting point paraffin, 1-5% of rosin, and 1-5% of stearic acid according to mass percentage %, polyethylene wax 0.5-3%, vaseline 0.5-5%, JFC 0.1-1%, and the rest is a mixed solvent; the mixed solvent is a mixture of ethyl acetate and ethylene dichloride. The invention is used for demoulding of resin sand casting moulds, has remarkable lubricating effect, can significantly reduce demoulding resistance, prolong the service life of the mould, and make the casting productivity higher. Moreover, the mold release agent of the present invention is clean and clean, which is conducive to improving the working environment and is safe to the human body; it can realize one-time coverage and multiple consecutive mold releases, so that the casting productivity is higher. The use of the release agent can greatly improve productivity and have 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 Patents(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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