Preparation process and device for titanium alloy cast three-dimensional printing ceramic mold shell

A technology of three-dimensional printing and preparation technology, which is applied in the field of titanium alloy casting, can solve problems such as explosion, and achieve the effects of good thermal strength, low cost and high production efficiency

Active Publication Date: 2019-09-13
维捷(苏州)三维打印有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main difficulty of replacing graphite sand molds produced by traditional techniques with inkjet bonding 3D printing sand molds for titanium alloy casting is that titanium alloys are very active, and titanium alloy metal liquid and other gases (oxygen, water vapor, organic matter) other than inert gases Evaporation gas, etc.) react violently, while the titanium alloy metal liquid and the mold surface (corundum Al 2 o 3 , Quartz SiO 2 and other refractory materials) react violently and even explode
Therefore, there is no related technical research on the inkjet bonding 3D printing sand mold titanium alloy casting process.

Method used

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  • Preparation process and device for titanium alloy cast three-dimensional printing ceramic mold shell
  • Preparation process and device for titanium alloy cast three-dimensional printing ceramic mold shell
  • Preparation process and device for titanium alloy cast three-dimensional printing ceramic mold shell

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Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1 of the present invention: as figure 1 and image 3 As shown, a preparation process for a three-dimensionally printed ceramic shell for titanium alloy casting comprises the following steps:

[0028] S1, vacuum impregnate the inkjet bonded 3D printing sand mold to form a 3D printing sand mold cavity bonding layer, and perform drying treatment;

[0029] S2, the surface of the cavity bonding layer is coated with an inert material coating to form a transition layer;

[0030] S3, the surface of the cavity transition layer is coated with an inert material paint to form a surface layer.

Embodiment 2

[0031] Embodiment 2: as figure 1 and image 3 As shown, a preparation process for a three-dimensionally printed ceramic shell for titanium alloy casting comprises the following steps:

[0032] S1, vacuum impregnate the inkjet bonded 3D printing sand mold to form a 3D printing sand mold cavity bonding layer, and do drying treatment; specifically include the following process: use a vacuum impregnation device to evenly absorb the infiltrating slurry on the surface of the 3D printing sand mold , at a relative humidity of 40%-70% and a temperature of 15°C-30°C, naturally harden for 4-6 hours and dry to form a bonding layer. The slurry components are silica sol and mullite powder with a weight ratio of 12-6:1-4, and the viscosity of the slurry is 2 seconds to 6 seconds.

[0033] S2, the surface of the cavity bonding layer is coated with an inert material coating to form a transition layer; specifically includes the following process: the weight ratio of 0.5-2:1.5-3.5 yttrium sol ...

Embodiment 3

[0035] Embodiment 3: as figure 1 and image 3 As shown, a preparation process for a three-dimensionally printed ceramic shell for titanium alloy casting comprises the following steps:

[0036]S1, vacuum impregnate the inkjet bonded 3D printing sand mold to form a 3D printing sand mold cavity bonding layer, and do drying treatment; specifically include the following process: use a vacuum impregnation device to evenly absorb the infiltrating slurry on the surface of the 3D printing sand mold , when the relative humidity is 50%-60%, the temperature is 18°C-26°C, the slurry is naturally hardened for 3-5 hours until it is completely dry, and the thickness of the prepared bonding layer is 5-10mm, the performance parameters are better. . The vacuum impregnation device can make the slurry enter the loose 3D printing sand surface more smoothly. Mullite powder is ultra-fine mullite powder below 10 microns, the weight ratio of silica sol and mullite powder is 8:1, the viscosity of the...

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PUM

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Abstract

The invention relates to the technical field of titanium alloy casting, in particular to a preparation process and device for a titanium alloy cast three-dimensional printing ceramic mold shell. The preparation process for the titanium alloy cast three-dimensional printing ceramic mold shell comprises the following steps of S1, bonding jet ink to a three-dimensional printing sand mold and conducting vacuum impregnation to form a three-dimensional printing sand mold cavity bonding layer and then conducting drying treatment; S2, coating the surface of the mold cavity bonding layer with an inertmaterial coating to form a transition layer; and S3, coating the surface of the transition layer of the mold cavity with the inert material coating to form a surface layer. According to the preparation process, various shapes of mold shells are formed through three-dimensional printing; the ceramic mold shell is prepared through the special process to complete titanium alloy casting, and the titanium alloy casting process is safe, stable and free of hidden danger. The invention further provides a device for preparing the titanium alloy cast three-dimensional printing ceramic mold shell. The device is mainly used for implementing the above technological process and is high in production efficiency, low in cost and worth applying and popularizing.

Description

technical field [0001] The invention relates to the technical field of titanium alloy casting, in particular to a preparation process and equipment for a three-dimensionally printed ceramic shell for titanium alloy casting. Background technique [0002] Titanium alloy has the characteristics of light weight, high strength and corrosion resistance, and is widely used in key components in aerospace, ships, drilling platforms and other fields. There are currently three production methods: direct processing of profiles; investment casting; sand casting. Due to the high strength and hardness of titanium alloy, it is difficult to process directly. Moreover, titanium alloy has a high melting temperature, is very active, and almost reacts with most oxides. The casting process is complicated and the cost is high. Among them, investment casting adopts the process route of wax pattern-ceramic shell-lost wax-casting-post-processing-casting, vacuum hot shell centrifugal casting, suitab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C3/00B22C1/00B33Y10/00B33Y80/00
CPCB22C1/00B22C3/00B22C9/04B33Y10/00B33Y80/00
Inventor 刘鸣金天拾
Owner 维捷(苏州)三维打印有限公司
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