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Releasing agent and application method thereof

A release agent, mold technology, applied in the direction of coating, casting molding equipment, casting mold, etc., can solve the problems of polluted environment, release agent release difficulty, etc., to achieve good surface roughness, excellent surface roughness, release Easy to model effects

Inactive Publication Date: 2015-07-08
SOUTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that the existing release agent is difficult to release the mold and pollutes the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 uses the release agent of the present invention to carry out casting

[0018] The coating is water glass sand self-hardening transfer coating, and the formula is: 95 parts of quartz powder, 5 parts of talcum powder, 0.5 part of CMC (carboxymethyl cellulose), 2 parts of sodium bentonite, 10 parts of water glass, glycerol diethyl 3 parts of acid ester;

[0019] The mold is made of wood.

[0020] If the release agent is methyl silicone oil;

[0021] To transfer coating methods in foundry applications, follow these steps:

[0022] Brush methyl silicone oil evenly on the surface of the mold with a brush, the thickness is 0.1 mm, and the coating rate is 100%;

[0023] Then spray or brush the paint evenly on the mold coated with the release agent, and then fill the mold with sand, and then release the mold after the paint reaches the mold release condition;

[0024] Then put the prepared core or pattern into a high-temperature furnace at 650 ° C for 5 minutes,...

Embodiment 2

[0032] Embodiment 2 uses the release agent of the present invention to carry out casting

[0033] The paint is clay sand self-hardening transfer paint, the formula is: 80 parts of bauxite, 20 parts of graphite, 2 parts of lithium bentonite, 15 parts of water glass, 40 parts of water, 1.5 parts of glycerol diacetate;

[0034] The mold adopts a rubber mold.

[0035] If the release agent is zinc stearate;

[0036] To transfer coating methods in foundry applications, follow these steps:

[0037] Brush zinc stearate evenly on the mold surface with a brush, the thickness is 0.15 mm, and the coating rate is 100%;

[0038] Then spray or brush the paint evenly on the mold coated with the release agent, and then fill the mold with sand, and then release the mold after the paint reaches the mold release condition;

[0039] Then put the prepared core or shape into a high-temperature furnace at 650 ° C for 10 minutes, and finally close the box and cast;

[0040] The paint transfer rate...

Embodiment 3

[0047] Example 3 Casting using the release agent of the present invention

[0048] The coating is a microwave hardened transfer coating, and the formula is: 90 parts of zircon powder, 10 parts of high alumina bauxite, 3 parts of attapulgite sticks, 20 parts of silica sol, and 15 parts of water;

[0049] The mold is a metal mold.

[0050] If the release agent is calcium-based grease;

[0051] To transfer coating methods in foundry applications, follow these steps:

[0052] Brush the calcium-based grease evenly on the surface of the mold with a brush, the thickness is 0.15 mm, and the coating rate is 100%;

[0053] Then spray or brush the paint evenly on the mold coated with the release agent, and then fill the mold with sand, and then release the mold after the paint reaches the mold release condition;

[0054] Then put the prepared core or pattern into a high-temperature furnace at 600 ° C for 10 minutes, and finally close the box and cast;

[0055] The paint transfer rate...

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PUM

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Abstract

The invention belongs to the technical field of casting, and particularly relates to a releasing agent and an application method thereof. The invention aims at solving the technical problems that the existing releasing agent is difficult in demolding and pollutes the environment. The releasing agent consists of machine oil and silica powder; the granularity of the silica powder is 600 to 2500 meshes, and the content of SiO2 is more than 99.5 percent. The invention also provides an application method of the releasing agent. By adopting the releasing agent, the flatness and smoothness of the surface of a coating outer layer can be guaranteed, excellent surface roughness is guaranteed, the demolding force is reduced, and the transfer rate of the coating is approximately 100 percent.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a mold release agent and a using method thereof. Background technique [0002] Transfer coating is a new type of casting coating that pre-coats the coating on the surface of the model or core box, and then fills the sand for molding or core making, thereby transferring the coating layer to the surface of the sand mold or core box, and truly realizes the surface quality and size of sand castings Precision, less cutting and no cutting, near net shape. [0003] However, the release agent of the coating has always been a difficult problem to solve. Even if the release is achieved, the surface quality of the casting is not good. Therefore, an excellent release agent is very important for the performance of the coating. [0004] Release agents usually include oil release agents, powder release agents, paste release agents, emulsion release agents and solution release agent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 张烁于文斌俎世琦贾琨李彬
Owner SOUTHWEST UNIV
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