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Coating for inner surface of sand mold of high-temperature alloy mold casting and using method

A high-temperature alloy and inner surface technology, applied in the direction of casting mold, casting mold composition, casting molding equipment, etc., can solve the problems of high temperature coating outgassing, use, high temperature resistance, etc., to reduce thickening tension and achieve good finish , practical and convenient effect

Pending Publication Date: 2020-12-08
王成富
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that high temperature coatings in the prior art have outgassing, are not resistant to high temperatures and cannot be used in a vacuum environment

Method used

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  • Coating for inner surface of sand mold of high-temperature alloy mold casting and using method
  • Coating for inner surface of sand mold of high-temperature alloy mold casting and using method
  • Coating for inner surface of sand mold of high-temperature alloy mold casting and using method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 , figure 2 and image 3 As shown, the present invention is a sand mold inner surface coating for superalloy mold castings, consisting of the following components: 57 parts of zirconium powder;

[0038] 35 parts of aluminum oxide fine powder;

[0039] 40 parts of silica sol;

[0040] And aluminum sol 5 parts.

[0041] Use process: Stir 57 parts of zircon powder and 35 parts of aluminum oxide fine powder to obtain mixed powder; use a mesh sieve to sieve the mixed powder obtained above to obtain fine mixed powder, and fully stir the fine mixed powder after sieving It is convenient to use in the next step; 40 parts of silica sol and 5 parts of aluminum sol are mixed to obtain a colloidal mixture, and absolute alcohol is added to the colloidal mixture, stirred evenly, and reacted at room temperature for at least 4 hours to obtain a flocculent colloid, Stir evenly again; mix the fine mixed powder and the colloid evenly to obtain a qualified high-tempera...

Embodiment 2

[0044] Such as figure 1 , figure 2 and image 3 Shown, the present embodiment is based on embodiment 1, and the present invention is superalloy mold casting sand mold inner surface coating,

[0045] Composed of the following ingredients: 60 parts of zircon powder;

[0046] 34 parts of aluminum oxide fine powder;

[0047] 20 parts of silica sol;

[0048] And 10 parts of aluminum sol.

[0049]Use process: Stir 60 parts of zircon powder and 34 parts of aluminum oxide fine powder to obtain mixed powder; use a mesh sieve to sieve the mixed powder obtained above to obtain a fine mixed powder, and fully stir the fine mixed powder after sieving It is convenient to use in the next step; 20 parts of silica sol and 10 parts of aluminum sol are mixed to obtain a colloidal mixture, and absolute alcohol is added to the colloidal mixture, stirred evenly, and reacted at room temperature for at least 4 hours to obtain a flocculent colloid, Stir evenly again; mix the fine mixed powder an...

Embodiment 3

[0052] Such as figure 1 , figure 2 and image 3 Shown, present embodiment is based on embodiment 1 and 2, and the present invention is superalloy mold casting sand mold internal surface coating,

[0053] Composed of the following ingredients: 70 parts of zircon powder;

[0054] 24 parts of aluminum oxide fine powder;

[0055] 25 parts of silica sol;

[0056] And aluminum sol 7 parts.

[0057] Use process: Stir 70 parts of zircon powder and 24 parts of aluminum oxide fine powder to obtain a mixed powder; use a mesh sieve to sieve the mixed powder obtained above to obtain a fine mixed powder, and fully stir the fine mixed powder after passing the sieve It is convenient to use in the next step; 25 parts of silica sol and 7 parts of aluminum sol are mixed to obtain a colloidal mixture, and absolute alcohol is added to the colloidal mixture, stirred evenly, and reacted at room temperature for at least 4 hours to obtain a flocculent colloid, Stir evenly again; mix the fine mi...

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Abstract

The invention discloses a coating for the inner surface of a sand mold of a high-temperature alloy mold casting and a using method. The coating comprises the following components of zircon powder, aluminum oxide micro powder, silica sol and aluminum sol. The coating and the using method have the advantages that the strength at low temperature is high, the high temperature resistance at high temperature is realized, and the molten steel scouring resistance at high temperature is realized; after the inner surface of the sand mold is coated with the coating for the isothermal forging inner surface of the sand mold of the high-temperature alloy mold casting, the inner surface of the sand mold is good in smoothness and free of air holes; and the coating can be used in a vacuum environment.

Description

technical field [0001] The invention relates to the scientific and technical field of aviation isothermal forging structural parts, in particular to a coating for the inner surface of a sand mold of a superalloy mold casting and a method for using it. Background technique [0002] The high-temperature alloy molds and large stainless steel castings used in aviation structural forgings are forged with isothermal forging molds because of the high cost of aviation materials, such as overall material processing and waste of materials, complex shapes, expensive man-hours, and difficult processing. It not only saves materials, but also avoids the waste of resources. [0003] Because the high-temperature alloy mold is used in isothermal forging, the material of the high-temperature alloy in use is special, the mold weight is heavy, and some single pieces are heavy and large. This high-temperature alloy cannot be forged and processed, but can only be cast forming. The material has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 王成富王宣乂
Owner 王成富
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