Refractory material for 3D printing and printing method thereof

A refractory material and 3D printing technology, applied in the field of refractory materials, can solve the problems of low degree of automated production, difficulty in mold manufacturing, waste of resources, etc.

Inactive Publication Date: 2021-02-09
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to produce refractory components with complex structures and difficult mold manufacturing, which consumes a lot of manpower and material resources, and the degree of automatic production is low. The production process may cause waste of resources and other problems.

Method used

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  • Refractory material for 3D printing and printing method thereof
  • Refractory material for 3D printing and printing method thereof
  • Refractory material for 3D printing and printing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Select 31.5% by weight of 5-3mm bauxite aggregate, 28% of 3-1mm bauxite aggregate, 5.6% of 200-mesh bauxite aggregate, 4.9% of 325-mesh bauxite aggregate, and 10% alumina Put salt cement, 5% silica fume, 2.742% activated alumina micropowder, 0.05% starch ether, and 0.045% thixotropic lubricant into the mixer and stir for 3 to 5 minutes, then mix 0.344% sodium tripolyphosphate and 0.086% sodium hexametaphosphate, these two solid water reducers are added to 10% water and completely dissolved, then slowly poured into the mixer and stirred for 5-10 minutes, so that the solid raw material changes from a dispersed state to a viscoplastic slurry state, and then Add 1.733% polypropylene fiber into the blender, and stir thoroughly for 3-5 minutes to obtain a refractory material suitable for 3D printing. Open the printing control software of the 3D printer, set the printing speed of the printing head, material extrusion speed and other process parameters, and then import a 3D mod...

Embodiment 2

[0036] Select 24% by weight of 5-3mm bauxite aggregate, 21% of 3-1mm bauxite aggregate, 9% of 200-mesh bauxite aggregate, 6% of 325-mesh bauxite aggregate, and 17% of alumina Put salt cement, 10% silica fume, 4.32% activated alumina micropowder, 0.05% starch ether, and 0.18% thixotropic lubricant into the mixer and stir for 3 to 5 minutes, then mix 0.518% sodium tripolyphosphate and 0.172% sodium hexametaphosphate, these two solid water reducers are added to 7% water and completely dissolved, then slowly poured into the mixer and stirred for 5 to 10 minutes, so that the solid raw materials change from a dispersed state to a viscoplastic slurry state, and then Add 0.76% polypropylene anti-cracking fiber into the blender, and stir thoroughly for 3-5 minutes to obtain a refractory material suitable for 3D printing. Open the printing control software of the 3D printer, set the printing speed of the printing head, material extrusion speed and other process parameters, and then impo...

Embodiment 3

[0038] Select 29.25% by weight of 5-3mm bauxite aggregate, 24.7% of 3-1mm bauxite aggregate, 6.5% of 200-mesh bauxite aggregate, 4.55% of 325-mesh bauxite aggregate, and 14.49% of alumina Put salt cement, 7.5% silica fume, 4% activated alumina micropowder, 0.01% starch ether, and 0.12% thixotropic lubricant into the mixer and stir for 3 to 5 minutes, then mix 0.43% sodium tripolyphosphate and 0.129% sodium hexametaphosphate, these two solid water reducers are added to 8% water and completely dissolved, then slowly poured into the mixer and stirred for 5-10 minutes, so that the solid raw materials change from a dispersed state to a viscoplastic slurry state, and then Add 0.321% polypropylene anti-cracking fiber into the blender, stir well for 3-5 minutes to obtain a refractory material suitable for 3D printing. Open the printing control software of the 3D printer, set the printing speed of the printing head, material extrusion speed and other process parameters, and then import...

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Abstract

The invention discloses a refractory material for 3D printing and a printing method thereof. According to the material, the proportion of a traditional refractory casting part is improved, the material is composed of alumina aggregate, aluminate cement, silica fume, activated aluminum oxide micro-powder, additives, fibers and water in percentage by weight; and the additives comprise a solid waterreducing agent, a thickening agent and a thixotropic lubricant, and the additives improve the viscosity, fluidity and stackable property of the material and enhance the printability of the refractorymaterial. A 3D printing technology is used for producing a refractory component in the invention; convenience and rapidness are achieved, an automation degree is high, one-time integral forming of thecomponent is achieved, and large-scale continuous production is facilitated; the printed refractory component is good in compactness, the normal-temperature compression strength of the refractory component is remarkably improved, and production and manufacturing of refractory components which are complex and irregular in structure and difficult to manufacture through molds are achieved; and the whole production process is environmentally friendly, and sustainable development is facilitated.

Description

technical field [0001] The invention relates to a refractory material, in particular to a refractory material for 3D printing and a printing method thereof, belonging to the technical field of refractory material preparation. Background technique [0002] Refractory prefabricated parts are a production process of refractory materials, which have the advantages of convenient and quick construction and long service life, and are often used in the field of high-temperature industrial kilns. Its production process is to divide the target construction body into small pieces and design them into special shapes, and manufacture corresponding molds for pouring, curing and baking, and then transport the completed prefabricated parts to the site for construction and installation. However, it is difficult to produce refractory components with complex structures and difficult mold manufacturing, which consumes a lot of manpower and material resources, the degree of automatic production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66B33Y10/00B33Y70/10B33Y80/00
CPCC04B35/66B33Y10/00B33Y70/10B33Y80/00C04B2235/3217C04B2235/5212C04B2235/447C04B2235/3445
Inventor 赖建中杜龙雨周捷航杨宇杰
Owner NANJING UNIV OF SCI & TECH
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