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Preparation method of mould release agent used for die casting

A release agent and raw material technology, which is applied to casting molding equipment, molds, mold components, etc., can solve the problems of acidic or alkaline release agent, mildew on the surface, corrosion of castings, etc. Improves surface density and finish without corrosive effects

Inactive Publication Date: 2014-06-25
温学敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the casting mold release agents used in the market are relatively expensive. The mold release agents are acidic or alkaline, and have a certain corrosion effect on the surface of castings. After a period of time, mold spots or slight corrosion will appear on the surface of castings. and other defects

Method used

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Embodiment

[0009] The preparation method of the release agent for die-casting of the present embodiment, the preparation of the release agent, its raw material components and the parts by weight of each component are: 40-50 parts of graphite, 5-10 parts of talcum powder, polyethylene wax 1-2 parts, 2-4 parts of boric acid, 10-20 parts of industrial alcohol, 40-60 parts of deionized water.

[0010] Weigh each raw material according to the weight fraction of each component of the release agent, first weigh 40 parts of graphite, purify and pulverize it into graphite powder, then weigh 8 parts of talcum powder, 1 part of polyethylene wax, 2 parts of boric acid, and 10 parts of industrial alcohol parts, 40 parts of deionized water, pour it into a clean container together with the crushed graphite powder, stir evenly, and then decompose at a high speed to make a release agent.

[0011] When in use, pour the prepared mold release agent into a container, add water 30 times the weight of the mold...

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Abstract

The invention discloses a preparation method of a mould release agent used for die casting, the mould release agent comprises the following raw materials by weight: 40-50 parts of graphite, 5-10 parts of powdered steatile, 1-2 parts of polyethylene wax, 2-4 parts of boric acid, 10-20 parts of industrial alcohol and 40-60 parts of deionized water; the method comprises the following steps: weighting the raw materials according to the weight fraction, purifying the graphite, crushing to graphite powder, then placing the crushed graphite powder and weighted raw materials in a clean container, uniformly stirring, and decomposing with high speed to prepare the mould release agent. While in use, the mould release agent can be used according to the casting condition, and is diluted with water and can be sprayed by using a spray gun. The mould release agent has the advantages of simple preparation, low production cost, good demoulding effect and no corrosion effect to casting; compactness and fineness on the surface of the die casting parts can be effectively increased, and the usage life of the mold can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a preparation method of a release agent for die-casting. Background technique [0002] Release agent is an important auxiliary material in die-casting production. It is closely related to the surface finish of the part and the life of the mold, and directly affects the surface shape of the die-casting part. At present, the casting mold release agents used in the market are relatively expensive. The mold release agents are acidic or alkaline, and have a certain corrosion effect on the surface of castings. After a period of time, mold spots or slight corrosion will appear on the surface of castings. and other defects. Contents of the invention [0003] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a method for preparing a release agent for die-casting, improve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22D17/22
Inventor 温学敏孙祥林
Owner 温学敏
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