Preparation method of novel high-leveling-property cast iron alcohol-based casting coating

A casting coating and leveling technology, applied to casting molding equipment, coatings, cores, etc., can solve problems such as poor surface quality of castings, excessive flow marks, and difficult flow coating operations for workers

Inactive Publication Date: 2021-05-11
TIANJIN NINGKANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing flow coating coatings generally have poor flow coating effect and too many flow marks, which makes the flow coating operation difficult for workers and the surface quality of castings is not good, so improving the construction performance of casting coatings such as leveling Problems to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A preparation method of a novel high-leveling cast iron alcohol-based casting coating, characterized in that it comprises the following steps:

[0024] ① Put the carrier methanol and xylene into the high-speed disperser, start stirring, and the stirring speed is 1000 rpm;

[0025] ②The pretreatment and preparation steps of the composite suspending agent are as follows:

[0026] The mixing of a suspending agent: the lithium-based bentonite that is 10 parts by weight, the magnesium aluminum silicate that is 8 parts by weight, the attapulgite that is 8 parts by weight and the demineralized water that is 25 parts by weight Use a kneader to shear and stir for 30-50 minutes, and then let it stand for more than 48 hours to prepare a mixed suspension paste;

[0027] The emulsification of b suspending agent: the mixed suspending agent paste in step a is mixed with the alcohol that parts by weight are 150 parts, add SF-720 leveling agent, emulsify 1 hour with emulsifying machine...

Embodiment 1

[0041] A preparation method of a novel high-leveling cast iron alcohol-based casting coating, characterized in that it comprises the following steps:

[0042] ① Put the carrier methanol and xylene into the high-speed disperser, start stirring, and the stirring speed is 1000 rpm;

[0043] ②The pretreatment and preparation steps of the composite suspending agent are as follows:

[0044] The mixing of a suspending agent: the lithium-based bentonite that is 10 parts by weight, the magnesium aluminum silicate that is 8 parts by weight, the attapulgite that is 8 parts by weight and the demineralized water that is 25 parts by weight Use a kneader to shear and stir for 30 minutes, and then let it stand for more than 48 hours to prepare a mixed suspension paste;

[0045] The emulsification of b suspending agent: the mixed suspending agent paste in step a is mixed with the alcohol that parts by weight are 150 parts, add SF-720 leveling agent, emulsify 1 hour with emulsifying machine, m...

Embodiment 2

[0059] A preparation method of a novel high-leveling cast iron alcohol-based casting coating, characterized in that it comprises the following steps:

[0060] ① Put the carrier methanol and xylene into the high-speed disperser, start stirring, and the stirring speed is 1000 rpm;

[0061] ②The pretreatment and preparation steps of the composite suspending agent are as follows:

[0062] The mixing of a suspending agent: the lithium-based bentonite that is 10 parts by weight, the magnesium aluminum silicate that is 8 parts by weight, the attapulgite that is 8 parts by weight and the demineralized water that is 25 parts by weight Use a kneader to shear and stir for 30 minutes, and then let it stand for more than 48 hours to prepare a mixed suspension paste;

[0063] The emulsification of b suspending agent: the mixed suspending agent paste in step a is mixed with the alcohol that parts by weight are 150 parts, adds SF-720 leveling agent, emulsifies with emulsifying machine 1 hour...

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PUM

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Abstract

The invention relates to a preparation method of a novel high-leveling-property cast iron alcohol-based casting coating. According to the preparation method, starting from a suspension system, the method of combining multiple suspending agents is adopted, and the interaction relationship between fluidity and thixotropy is balanced according to a certain adding proportion so as to achieve the aim of improving the leveling property. Meanwhile, the leveling property is further improved by adding a proper leveling agent. Through small-scale tests, pilot-scale tests and production field tests, a very good effect is obtained.

Description

technical field [0001] The invention relates to the technical field of casting coatings, in particular to a preparation method of a novel high-leveling cast iron alcohol-based casting coating. Background technique [0002] Foundry coating is the basic coating for gravity metal casting, it is suitable for all metal molds, and it is the most effective measure to solve the sand sticking on the surface of castings and improve the surface quality of castings. In general, there are several methods of coating and hanging casting coatings, including brushing, dipping, flowing, and spraying. Among them, the flow coating method has the advantages of simple operation and no need for special equipment, and is very popular in practical applications. However, the existing flow coating coatings generally have poor flow coating effect and too many flow marks, which makes the flow coating operation difficult for workers and the surface quality of castings is not good, so improving the constr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 刘聪
Owner TIANJIN NINGKANG TECH
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