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Anti-crack coating agent used for investment-cast castings and preparing method for anti-crack coating agent

A technology of investment casting and coating agent, applied in casting molding equipment, coating, casting mold and other directions, can solve the problems of low product quality and casting cracks, so as to improve the qualified rate of products, reduce the degree of explosion, improve the The effect of pass rate

Inactive Publication Date: 2017-11-07
李吕军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of investment casting, it is often encountered that it is easy to cause cracks on the surface of the casting during the pouring process. Due to the temperature and the lack of pores on the surface of the wax mold, the quality of the cast product is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Anti-crack coating for investment casting castings, prepared from the following components: hydroxypropyl methylcellulose, alkylphenol ethoxylates, anti-crack metal liquid, sodium tetraborate, sodium metasilicate , Sodium Phosphate, Malay Powder, Liquid Paraffin, Lauryl Alcohol and Deionized Water;

[0028] The above-mentioned components are prepared by the following parts by mass: 30-40 parts of hydroxypropyl methylcellulose, 30 parts of alkylphenol polyoxyethylene ether, 20 parts of anti-crack additive solution, tetraboric acid 10 parts of sodium, 3 parts of sodium metasilicate, 3 parts of sodium phosphate, 6 parts of malay powder, 5 parts of liquid paraffin, 3 parts of lauryl alcohol and 20 parts of deionized water;

[0029] The above-mentioned anti-crack additive solution is prepared from the following components: gelatin, hydrogen peroxide, iron powder, fluorocarbon powder, lignocellulose, rubber powder, putty powder and graphite powder;

[0030] The mass parts of...

Embodiment 2

[0044] Anti-crack coating for investment casting castings, prepared from the following components: hydroxypropyl methylcellulose, alkylphenol ethoxylates, anti-crack metal liquid, sodium tetraborate, sodium metasilicate , Sodium Phosphate, Malay Powder, Liquid Paraffin, Lauryl Alcohol and Deionized Water;

[0045] The above-mentioned components are prepared by the following parts by mass: 40 parts of hydroxypropyl methylcellulose, 40 parts of alkylphenol polyoxyethylene ether, 30 parts of anti-crack additive solution, 15 parts of sodium tetraborate 8 parts of sodium metasilicate, 5 parts of sodium phosphate, 10 parts of horseradish powder, 8 parts of liquid paraffin, 6 parts of lauryl alcohol and 25 parts of deionized water;

[0046] The above-mentioned anti-crack additive solution is prepared from the following components: gelatin, hydrogen peroxide, iron powder, fluorocarbon powder, lignocellulose, rubber powder, putty powder and graphite powder;

[0047] The mass parts of ...

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PUM

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Abstract

The invention provides an anti-crack coating agent used for investment-cast casting, and relates to the related technical field of investment casting. The anti-crack coating agent used for investment-cast casting comprises, by component, hydroxyl propyl methyl cellulose, alkylphenol ethoxylates, anti-crack metal liquid, sodium tetraborate, sodium metasilicate, sodium phosphate, the Malay powder, liquid paraffin, dodecanol and deionized water. According to the anti-crack coating agent used for the investment-cast casting, the qualification rate of investment casting products can be increased, the number of cracks and the burst degree of a casting piece are reduced, cracking probability of the casting pieces during the pouring process is reduced through using of the coating agent, and the product qualification rate is improved.

Description

Technical field: [0001] The invention relates to the technical field related to investment casting, in particular to an anti-crack coating agent for investment casting castings and a preparation method thereof. Background technique: [0002] Investment casting, also known as lost wax casting, includes processes such as wax pressing, wax repairing, tree formation, dipping, melting wax, casting molten metal and post-processing. Lost wax casting is to use wax to make a wax mold of the part to be cast, and then coat the wax mold with mud, which is the mud mold. After the clay mold is dried, it is fired into a pottery mold. Once fired, all the wax molds are melted and lost, leaving only the pottery molds. Generally, when the mud mold is made, the sprue is left, and then the molten metal is poured into the sprue, and after cooling, the required parts are made. [0003] Investment casting uses a method of coating a refractory material on a pattern made of fusible material to for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22C9/04B22C7/02
CPCB22C3/00B22C7/02B22C9/04
Inventor 李吕军
Owner 李吕军
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