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Casting wax mold exterior coating and method for manufacturing mold shell through coating

A technology for external coatings and casting wax molds, which is applied in the direction of casting molding equipment, casting molds, and casting mold components. Scientific norms to ensure the effect of precise performance

Inactive Publication Date: 2017-10-03
TIANCHANG XINGYU CASTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When casting is in progress, ensuring the fineness of the precision parts after casting usually depends on the wax mold prepared by the daily casting wax. In actual operation, after the wax mold of the same size is prepared for the shape of the workpiece, then After the corresponding outer wall is coated with high-temperature-resistant materials on the outer wall of the wax model, after dewaxing, the corresponding model cavity is prepared for subsequent use. In the current technical field, the method of outer wall coating and coating is relatively simple , all use the same paint for multi-layer coating and hanging. Although this method of operation can actually prepare the mold cavity, the performance of the mold cavity after preparation is not superior and uneven, resulting in forging defects in subsequent processing. higher rate

Method used

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  • Casting wax mold exterior coating and method for manufacturing mold shell through coating
  • Casting wax mold exterior coating and method for manufacturing mold shell through coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An external coating for casting wax patterns, characterized in that it consists of a surface layer 1, a surface layer 2, a transition layer and a strengthening layer;

[0025] The first surface layer includes: 32.5% of primary water glass, 1.4% of quartz powder, and the balance is well mud powder;

[0026] The second surface layer comprises: 32.5% of primary water glass, 1.3% of quartz powder, and the balance is well mud powder;

[0027] The transition layer comprises: 37.5% of secondary water glass, 31.75% of quartz powder, and the balance is well mud powder;

[0028] The reinforcing layer comprises: 37.5% of secondary water glass, 24.5% of quartz powder, and the balance is well mud powder;

[0029] The first-grade water glass comprises the following components: 22% silicon dioxide, 7.1% sodium oxide, and the balance is silica sand;

[0030] The secondary water glass comprises the following components: 26% silicon dioxide, 8.5% sodium oxide, and the balance being sil...

Embodiment 2

[0040] An exterior coating for casting wax patterns, comprising a surface layer 1, a surface layer 2, a transition layer and a strengthening layer;

[0041] The first surface layer includes: 32% of primary water glass, 1.3% of quartz powder, and the balance is well mud powder;

[0042] The second surface layer comprises: 32% of primary water glass, 1.2% of quartz powder, and the balance is well mud powder;

[0043] The transition layer comprises: 37% of secondary water glass, 31.5% of quartz powder, and the balance is well mud powder;

[0044] The reinforcing layer comprises: 37% of secondary water glass, 24% of quartz powder, and the balance is well mud powder;

[0045] The first-grade water glass comprises the following components: 21% silicon dioxide, 6.7% sodium oxide, and the balance being silica sand;

[0046] Described secondary water glass comprises the following components: 24% of silicon dioxide, 8% of sodium oxide, and the balance is silica sand;

[0047] A metho...

Embodiment 3

[0056] An exterior coating for casting wax patterns, comprising a surface layer 1, a surface layer 2, a transition layer and a strengthening layer;

[0057] The first surface layer includes: 33% of primary water glass, 1.5% of quartz powder, and the balance is well mud powder;

[0058] The second surface layer comprises: 33% of primary water glass, 1.4% of quartz powder, and the balance is well mud powder;

[0059] The transition layer comprises: 38% of secondary water glass, 32% of quartz powder, and the balance is well mud powder;

[0060] The reinforcing layer comprises: 38% of secondary water glass, 25% of quartz powder, and the balance is well mud powder;

[0061] The first-grade water glass comprises the following components: 23% silicon dioxide, 7.5% sodium oxide, and the balance being silica sand;

[0062] The secondary water glass comprises the following components: 28% silicon dioxide, 9% sodium oxide, and the balance being silica sand;

[0063] A method for manuf...

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Abstract

A casting wax mold exterior coating comprises a first surface layer, a second surface layer, a transitional layer and a reinforcing layer. The casting wax mold exterior coating has the beneficial effects that the design is novel, the preparation technique is scientific and standard, by adopting different proportions of a plurality of layers of coatings, the effect that each layer is sufficiently balanced is guaranteed, the effect that a prepared mold cavity has the characteristics of high temperature resistance and high strength is guaranteed, and precision performance during subsequent foundry casting is guaranteed.

Description

technical field [0001] The invention relates to the technical field of precision casting, in particular to an external coating for casting wax patterns and a method for making model shells by using the coating. Background technique [0002] Casting is a kind of metal thermal processing technology mastered by human beings earlier, with a history of about 6,000 years. China has entered the heyday of bronze castings between 1700 BC and 1000 BC, and the craftsmanship has reached a very high level. Casting is a method in which liquid metal is poured into a casting cavity adapted to the shape of the part, and after it is cooled and solidified, the part or blank is obtained. [0003] When casting is in progress, ensuring the fineness of the precision parts after casting usually depends on the wax mold prepared by the daily casting wax. In actual operation, after the wax mold of the same size is prepared for the shape of the workpiece, then After the corresponding outer wall is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22C9/04
CPCB22C3/00B22C9/04
Inventor 焦培峰徐大兵徐乐高
Owner TIANCHANG XINGYU CASTING CO LTD
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