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3D printing material used for pipes in hot casting process

A technology of 3D printing and medium-sized pipe fittings, which is applied in the field of 3D printing materials, can solve the problems of unusable printing materials, affecting industrial production, and insufficient temperature bearing capacity, and achieve the effects of overall performance improvement, improved adsorption, and excellent fire resistance

Inactive Publication Date: 2017-08-15
张丹丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the pipe fittings are molded by casting. Although this method is low in cost and high in production efficiency, although the mechanical properties of the pipe fittings are guaranteed, the temperature bearing capacity is obviously insufficient under long-term use in high-temperature or even ultra-high-temperature environments. It is easy to cause cracking, deformation and fracture, which affects the normal and effective operation of industrial production; at the same time, the precision of cast pipe fittings has certain limitations, and some production processes with special requirements for precision and shape cannot meet their needs.
[0003] As a field of rapid prototyping, 3D printing technology can be applied to the preparation of pipe fittings with special requirements on precision and shape, but the current printing materials cannot be used in high temperature or ultra-high temperature environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A 3D printing material for pipe fittings in the hot casting process. Its components and the mass fractions of each component are: clay material: 33%, alkali-free glass fiber: 28%, nano-zirconia: 18%, Nickel-based alloy powder: 12%, auxiliary agent: 5-9%.

[0031] The composition of the clay material and the mass percentage of each component are: Mujie clay: 33%, bentonite: 27%, volcanic tuff: 14%, expanded graphite: 14%, spinel: 12%.

[0032]The composition of the nickel-based alloy powder and the mass percentage of each component in the nickel-based alloy powder are: Cr: 1.75%, Co: 3%, Mo: 2.8%, Re: 4.2%, Ru: 2.4%, W: 5.5% , Al: 7%, Ti: 1%, Ta: 5.2%, Nb: 0.13%, Hf: 0.15%, B: 0.04%, V: 0.75%, rare earth elements: 0.14%, others are Ni; rare earth elements are Y .

[0033] The components in the auxiliary agent and the parts by mass are: stabilizer: 7 parts, toughening agent: 5 parts, bridging agent: 5 parts, stabilizer: 5 parts, dispersant: 7 parts.

[0034] Its manufa...

Embodiment 2

[0043] A 3D printing material for pipe fittings in the hot casting process. Its components and the mass fractions of each component are: clay material: 45%, alkali-free glass fiber: 19%, nano-zirconia: 18%, Nickel-based alloy powder: 9%, auxiliary agent: 9.

[0044] The composition of the clay material and the mass percentage of each component are: Mujie clay: 58%, bentonite: 19%, volcanic tuff: 8%, expanded graphite: 8%, spinel: 7%.

[0045] The composition of the nickel-based alloy powder and the mass percentage of each component in the nickel-based alloy powder are: Cr: 1.3%, Co: 2%, Mo: 3.5%, Re: 7.5%, Ru: 0.5%, W: 7% , Al: 4%, Ti: 1.9%, Ta: 8%, Nb: 0.07%, Hf: 0.03%, B: 0.01%, V: 0.3%, rare earth elements: 0.1%, others are Ni; rare earth elements are Y , the combination of Ce.

[0046] The components in the auxiliary agent and the parts by mass are: stabilizer: 12 parts, toughening agent: 2 parts, bridging agent: 3 parts, stabilizer: 5 parts, dispersant: 4 parts.

[004...

Embodiment 3

[0057] A 3D printing material used for pipe fittings in the hot casting process. Its components and the parts by mass of each component are: clay material: 39%, alkali-free glass fiber: 24%, nano-zirconia: 16%, Nickel-based alloy powder: 11%, auxiliary agent: 10%.

[0058] The composition of the clay material and the mass percentage of each component are: Mujie clay: 50%, bentonite: 24%, volcanic tuff: 11%, expanded graphite: 7%, spinel: 8%.

[0059] The composition of the nickel-based alloy powder and the mass percentage of each component in the nickel-based alloy powder are: Cr: 1.4%, Co: 2.4%, Mo: 3.2%, Re: 6.2%, Ru: 0.2%, W: 5.7% , Al: 4.3%, Ti: 0.2%, Ta: 6.5%, Nb: 0.05%, Hf: 0.07%, V: 0.3%, rare earth elements: 0.03%, others are Ni; rare earth elements are Y, Ce and Lu combination.

[0060] The components in the auxiliary agent and the parts by mass are: stabilizer: 10 parts, toughening agent: 4 parts, bridging agent: 4 parts, stabilizer: 3 parts, dispersant: 6 parts. ...

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PUM

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Abstract

The invention provides a 3D printing material for pipe fittings in a hot casting process. Zirconium dioxide: 12-21%, nickel-based alloy powder: 7-15%, auxiliary agent: 5-12%. The invention has excellent high-temperature strength, fatigue resistance, high-temperature corrosion resistance, high-temperature alloy structure stability and excellent temperature-bearing capacity, and has excellent mechanical strength and durability after being formed by 3D printing. Production of special pipe fittings.

Description

technical field [0001] The invention belongs to the field of precision casting technology, and in particular relates to a 3D printing material used for pipe fittings in the hot casting technology. Background technique [0002] With the continuous improvement of industrial production efficiency and quality, the quality requirements for hot-cast pipe fittings used in industrial production have also increased. At present, most of the pipe fittings are molded by casting. Although this method is low in cost and high in production efficiency, although the mechanical properties of the pipe fittings are guaranteed, the temperature bearing capacity is obviously insufficient under long-term use in high-temperature or even ultra-high-temperature environments. It is easy to cause cracking, deformation and fracture, which affects the normal and effective operation of industrial production; at the same time, the precision of cast pipe fittings has certain limitations, and some production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C49/00C22C47/02B33Y70/00C22C101/06
CPCB22F1/0003B33Y70/00C22C47/02C22C49/00
Inventor 张丹丹
Owner 张丹丹
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