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Coating for casting automobile flywheel shell

A technology for flywheel housings and automobiles, which is applied to casting molding equipment, coatings, casting molds, etc., and can solve the problems of residual pores and cracks on the surface of castings, reduce the surface roughness of castings, and imperfect performance, etc., and achieve good promotion and use value , good bonding strength and excellent quality

Inactive Publication Date: 2017-01-25
黄林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Flywheel shells are usually made of cast iron. Due to the imperfect performance of traditional casting sand, it is easy to cause problems such as pores, cracks, and even deformation on the surface of the casting. Based on this, people apply a layer of paint to the surface of the sand to prevent metal Infiltrate the sand, absorb the decomposition products, and let the gas pass through the coating to maintain the integrity of the cavity, thereby reducing the surface roughness of the casting, etc.
Most of the existing coatings have the problems of poor temperature resistance and large usage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A coating for automobile flywheel housing casting, made of the following substances by weight:

[0021] 30 parts of modified expanded vermiculite powder, 30 parts of modified white corundum powder, 10 parts of fused mullite, 10 parts of corn starch, 10 parts of copal resin, 10 parts of terpene resin, 5 parts of butyl acrylate, 15 parts of iso Propanol, 4 parts of microcrystalline paraffin, 3 parts of polyethylene glycol, 1 part of polyoxyethylene polyoxypropanolamine ether, 1 part of barium stearate, 2 parts of sodium citrate; the modified expanded vermiculite powder consists of the following The material of parts by weight is made: 80 parts of expanded vermiculite powder, 10 parts of nano-titanium dioxide, 3 parts of talcum powder, 2 parts of phenolic resin, 2 parts of urea-formaldehyde resin, 1 part of fatty alcohol polyoxyethylene ether sodium sulfate, 2 parts of lauryl Trimethylammonium chloride, 40 parts of water; the modified white corundum powder is made of the f...

Embodiment 2

[0032] A coating for automobile flywheel housing casting, made of the following substances by weight:

[0033] 35 parts of modified expanded vermiculite powder, 35 parts of modified white corundum powder, 15 parts of fused mullite, 13 parts of corn starch, 12 parts of copal resin, 13 parts of terpene resin, 8 parts of butyl acrylate, 17 parts of iso Propanol, 5 parts of microcrystalline paraffin, 4 parts of polyethylene glycol, 2 parts of polyoxyethylene polyoxypropanol amine ether, 2 parts of barium stearate, 3 parts of sodium citrate; The modified expanded vermiculite powder consists of the following The material of parts by weight is made: 85 parts of expanded vermiculite powders, 13 parts of nano-titanium dioxide, 4 parts of talcum powder, 3 parts of phenolic resins, 3 parts of urea-formaldehyde resins, 2 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 2.5 parts of lauryl Trimethylammonium chloride, 45 parts of water; the modified white corundum powder is made...

Embodiment 3

[0035] A coating for automobile flywheel housing casting, made of the following substances by weight:

[0036] 40 parts of modified expanded vermiculite powder, 40 parts of modified white corundum powder, 20 parts of fused mullite, 15 parts of corn starch, 15 parts of copal resin, 15 parts of terpene resin, 10 parts of butyl acrylate, 20 parts of iso Propanol, 7 parts of microcrystalline paraffin, 5 parts of polyethylene glycol, 3 parts of polyoxyethylene polyoxypropanol amine ether, 3 parts of barium stearate, 4 parts of sodium citrate; The modified expanded vermiculite powder consists of the following The material of parts by weight is made: 90 parts of expanded vermiculite powder, 15 parts of nano-titanium dioxide, 5 parts of talcum powder, 4 parts of phenolic resin, 4 parts of urea-formaldehyde resin, 4 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 3 parts of lauryl Trimethylammonium chloride, 50 parts of water; the modified white corundum powder is made of ...

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PUM

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Abstract

The invention discloses a coating for casting an automobile flywheel shell and belongs to the technical field of the casting. The coating is prepared from the following materials: modified swelling vermiculite powder, modified white corundum powder, electric smelting mullite, corn starch, copal resin, terpene resin, butyl acrylate, isopropyl alcohol, micro wax, polyethylene glycol, polyoxyethylene propyl alcohol amine ether, barium stearate and sodium citrate. The coating prepared according to the invention has the advantages of excellent film-forming property, caking property, high temperature impact resistance and damp-proof air permeability, stable property and high quality; in actual use processes, the normal casting process can be guaranteed by only applying the coating in the dosage being 1 / 4-1 / 2 of the dosage of the traditional coating; and the coating has great popularization and application values.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a coating for casting an automobile flywheel housing. Background technique [0002] The flywheel housing is one of the parts of the engine. The engine flywheel housing is located between the engine body and the gearbox. The engine flywheel housing is installed on the outside of the engine flywheel and is fixedly connected with the engine body and the gearbox. The flywheel housing is used for the cover through the flywheel chamber The flywheel plays the role of connecting the body, protection and carrier. [0003] Flywheel shells are usually made of cast iron. Due to the imperfect performance of traditional casting sand, it is easy to cause problems such as pores, cracks, and even deformation on the surface of the casting. Based on this, people apply a layer of paint to the surface of the sand to prevent metal Infiltrate the sand, absorb the decomposition products, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 黄林
Owner 黄林
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