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Method for direct production of core in narrow groove and blind hole of wax mould

A technology of wax mold and blind hole, which is applied in the direction of core, casting mold, casting mold composition, etc., can solve complex casting process and other problems, and achieve the effects of broad prospects, low production cost and shortened production cycle

Inactive Publication Date: 2006-09-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0067] The purpose of the present invention is to provide a method for directly making cores in narrow grooves and blind holes of wax patterns, so as to solve the above-mentioned shortcomings in the production of complex castings

Method used

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  • Method for direct production of core in narrow groove and blind hole of wax mould
  • Method for direct production of core in narrow groove and blind hole of wax mould
  • Method for direct production of core in narrow groove and blind hole of wax mould

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] A method for directly manufacturing cores in narrow grooves and blind holes of wax patterns, the method comprises the following steps:

[0107] (1) wax mold pressure type

[0108] According to casting requirements, design and manufacture wax mold pressing;

[0109] (2) Wax mold making

[0110] The wax material is pressed into the wax mold described in step (1) to form a wax mold with deep grooves and blind holes;

[0111] (3) Slurry preparation

[0112] According to the ratio of each mass unit, add the raw materials and mix them in the order of binder, surfactant, refractory material, defoamer, and coagulant to prepare slurry; the addition amount is: binder silica sol 100g, refractory material fused silica 200g, coagulant organic acid 0.1g, surfactant fatty alcohol polyoxyethyl ether (JFC) 0.3g, defoamer silicone defoamer 0.2g;

[0113] (4) Grouting into the wax mold

[0114] Pour the slurry prepared in step (3) into the deep groove and blind hole of the wax mold p...

Embodiment 2

[0116] A method for directly manufacturing cores in narrow grooves and blind holes of wax patterns, the method comprises the following steps:

[0117] (1) wax mold pressure type

[0118] According to casting requirements, design and manufacture wax mold pressing;

[0119] (2) Wax mold making

[0120] The wax material is pressed into the wax mold described in step (1) to form a wax mold with deep grooves and blind holes;

[0121] (3) Slurry preparation

[0122] According to the ratio of each mass unit, add the raw materials and mix them in the order of binder, surfactant, refractory material, defoamer, and coagulant to prepare slurry; the addition amount is: binder water glass 100g, refractory material quartz 50g , coal gangue 70g, coagulant acid 0.1g, surfactant fatty alcohol polyoxyethyl ether (JFC) 0.2g, defoamer silicone defoamer 0.3g

[0123] (4) Grouting into the wax mold

[0124] Pour the slurry prepared in step (3) into the deep groove and blind hole of the wax mol...

Embodiment 3

[0126] A method for directly manufacturing cores in narrow grooves and blind holes of wax patterns, the method comprises the following steps:

[0127] (1) wax mold pressure type

[0128] According to casting requirements, design and manufacture wax mold pressing;

[0129] (2) Wax mold making

[0130] The wax material is pressed into the wax mold described in step (1) to form a wax mold with deep grooves and blind holes;

[0131] (3) Slurry preparation

[0132] According to the mass ratio, add the raw materials in order of binder, refractory material and coagulant to prepare slurry; the addition amount is: binder ethyl silicate hydrolyzate 100g, refractory corundum 300g, coagulant alcohol Amine 2g;

[0133] (4) Grouting into the wax mold to make the core

[0134] Pour the slurry prepared in step (3) into the deep groove and blind hole of the wax mold prepared in step (2); after the slurry in the wax mold is solidified, the narrow groove and blind hole of the wax mold are d...

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Abstract

The invention relates to a method for directly producing core inside the narrow groove and blind hole of wax hole, which provides a method that casting core with simple molding pattern. Said method fills the slurry with accelerant into the forward groove and blind hole before assembling the wax mold to prepare the core, which comprises: preparing wax mold to be compressed; preparing wax mold; adding raw materials at the mass percentages as: fireproof material : accelerant : surface active agent : defoaming agent as 100 : (100-40) : (0.1-10) : (0.1-0.3) : (0.1-0.3) to prepare the slurry; then filling into the wax mold to be shaped; being solidified to attain the core inside the narrow groove and blind hole. The inventive method is simple without special device and it can save energy, reduce cost, with shorten producing period.

Description

technical field [0001] A method for directly making cores in narrow grooves and blind holes of wax patterns, relating to a new and simple method for making investment casting cores, more specifically, a method for making deep grooves before wax patterns are assembled The invention discloses a method for preparing a mold core by filling blind holes and the like with slurry added with a coagulant, and belongs to the technical field of methods for quickly making mold cores in investment casting. Background technique [0002] The general process of investment casting: wax mold pressing, gate wax mold making, tree forming, shell making, dewaxing, roasting, pouring, cleaning and other processes. [0003] Generally, the inner cavity of precision castings is formed through processes such as coating and sanding together with the shape, and no custom-made core is required. However, when the inner cavity of the casting is too narrow or complex in shape, conventional processes such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04
Inventor 闫双景姜不居吕志刚崔旭龙
Owner TSINGHUA UNIV
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