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Coating for lost foam casting of engine cylinder blocks and preparing method thereof

A technology of lost foam casting and engine block, which is applied to casting molding equipment, coatings, casting molds, etc. It can solve the problems of human body and air hazards, poor air permeability, and gas can not be discharged, so as to improve the adhesion Concentration, good coating and hangability, and good product quality

Inactive Publication Date: 2012-06-20
山西华尔动力机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing lost foam coatings are generally formulated in two ways, one is to purchase coating powder and prepare according to the manufacturer’s instructions, the other is to purchase prepared coating liquid, because the prepared coating liquid is added with formaldehyde for anti-corrosion, which is harmful to the human body and Air causes great harm; the coatings prepared in the above two ways are prone to precipitation, or the adhesion is small and easy to fall off, the strength of the coating is low after drying, and some of them have poor air permeability during casting, resulting in a large amount of gas that cannot be used in a short time. Discharge, easy to cause waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The coating for lost foam casting of the engine block is prepared by the following raw materials by weight: the above-mentioned coating for the lost foam casting of the engine block is preferably prepared by the following raw materials by weight: 100 parts of quartz sand powder 7 parts of sodium bentonite; 0.3 parts of cellulose; 9 parts of resin; 0.03 parts of Tween; 0.06 parts of n-octanol; 2 parts of flour; The coating after the above preparation has a density of 55g / cm 3 .

Embodiment 2

[0017] The coating for lost foam casting of the engine block is prepared from the following raw materials by weight: the above-mentioned coating for lost foam casting of the engine block is prepared by the following raw materials by weight: 100 parts of quartz sand powder; 5 parts of bentonite; 0.1 part of cellulose; 5 parts of resin; 0.01 part of Tween; 0.04 part of n-octanol; 1 part of flour; The coating after the above preparation has a density of 50g / cm 3 .

Embodiment 3

[0019] The coating for lost foam casting of the engine block is prepared from the following raw materials by weight: the above-mentioned coating for lost foam casting of the engine block is prepared by the following raw materials by weight: 100 parts of quartz sand powder; 10 parts of bentonite; 1 part of cellulose; 15 parts of resin; 0.08 parts of Tween; 0.07 parts of n-octanol; 5 parts of flour; The coating after the above preparation has a density of 60g / cm 3 .

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PUM

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Abstract

The invention discloses a coating for lost foam casting of engine cylinder blocks and a preparing method thereof, belongs to the technical field of lost foam coating, and aims to provide a lost foam coating with fine coating property, fine breathability and high strength and a preparing method thereof. The technical scheme includes that the coating for lost foam casting of engine cylinder blocks is prepared by the following raw materials: by weight part, 100 parts of quartz sand powder, 5-10 parts of sodium bentonite, 0.1-1 part of cellulose, 5-15 parts of resin, 0.01-0.08 part of tween, 0.02-0.1 part of octanol, 1-5 parts of flour and 60-90 parts of pure water. The coating for lost foam casting of engine cylinder blocks and the preparing method thereof can be applied to various of lost foam casting fields in the prior art widely.

Description

technical field [0001] The invention relates to a coating for lost foam casting of an engine cylinder body and a preparation method thereof, belonging to the technical field of lost foam coatings. Background technique [0002] Existing lost foam coatings are generally formulated in two ways, one is to purchase coating powder and prepare according to the manufacturer’s instructions, the other is to purchase prepared coating liquid, because the prepared coating liquid is added with formaldehyde for anti-corrosion, which is harmful to the human body and Air causes great harm; the coatings prepared in the above two ways are prone to precipitation, or the adhesion is small and easy to fall off, the strength of the coating is low after drying, and some of them have poor air permeability during casting, resulting in a large amount of gas that cannot be used in a short time. Discharge, easy to cause waste. Contents of the invention [0003] The invention overcomes the deficiencie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22C9/04
Inventor 李文江冯永勤张娜
Owner 山西华尔动力机械有限公司
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