Preparation method of low-temperature co-fired ceramic super-hard abrasive polymer based on 3D printing

A technology of low-temperature co-fired ceramics and 3D printing, applied in the direction of additive processing, etc., can solve the problems of complex spatial structure, high hardness, high wear resistance and high connection strength, etc., achieve good material density, reduce porosity, and preparation method easy effect

Inactive Publication Date: 2020-07-31
江苏新砺河磨具科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention discloses a method for preparing a low-temperature co-fired ceramic superabrasive polymer based on 3D printing. The method of the present invention can combine the low-temperature co-fired ceramic bond with the Superhard abrasives are prepared into polymers, which can realize rapid prototyping of complex space structures after 3D printing, solving the problem that core components in the fields of aerospace, national defense, and high-end equipment manufacturing often have complex spatial structures and Technical defects of high hardness, high wear resistance and high connection strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh glass-ceramic raw materials according to the following ratio: 50% SiO 2 , 5% Al 2 o 3 , 10% B 2 o 3 , 5%Na 2 O, 10%K 2 O, 10% CaO, 10% ZnO, mixed evenly, smelting temperature 1400°C, smelting for 1h, water quenching, drying, crushing, and ball milling for 6h to obtain glass-ceramics. Ceramic raw materials weighed in the following proportion: 50% Al 2 o 3 and 50% ZrO 2 , mixed evenly, the ceramic material after ball milling for 6h. Mix the glass-ceramic material and the ceramic material at a ratio of 1:1, ball mill for 6 hours in an anhydrous ethanol medium, and dry and sieve to obtain a low-temperature co-fired vitrified bond. Mix CBN, low-temperature co-fired vitrified binder and acrylic acid at a ratio of 40:100:10, mix well and place it in a 3D printing device to obtain a polymer to be fired. The firing temperature of the polymer is 900°C, the heating rate is 5°C / min, and the temperature is kept for 1 hour to obtain the 3D printing-based low temperatu...

Embodiment 2

[0028] Weigh glass-ceramic raw materials according to the following ratio: 50% SiO 2 , 10% Al 2 o 3 , 20%B 2 o 3 , 5%Na 2 O, 5%K 2 O, 5% CaO, 5% ZnO, mixed evenly, smelting temperature 1300°C, smelting for 1.5h, water quenching, drying, crushing, and ball milling for 5h to obtain glass-ceramic frit. Ceramic raw materials weighed in the following proportion: 90% Al 2 o 3 and 10% ZrO 2 , mixed evenly, the ceramic material after ball milling for 6h. Mix the glass-ceramic material and the ceramic material at a ratio of 2:1, ball mill for 6 hours in an anhydrous ethanol medium, and dry and sieve to obtain a low-temperature co-fired vitrified bond. Mix CBN, low-temperature co-fired vitrified binder and acrylic acid at a ratio of 40:100:10, mix well and place it in a 3D printing device to obtain a polymer to be fired. The firing temperature of the polymer is 950° C., the heating rate is 5° C. / min, and the temperature is kept for 1 hour to obtain the 3D printing-based low-te...

Embodiment 3

[0031] Weigh glass-ceramic raw materials according to the following ratio: 60% SiO 2 , 5%Al 2 o 3 , 10% B 2 o 3 , 10%Na 2 O, 5%K 2 O, 5% CaO, 5% ZnO 2 , mixed evenly, melting temperature 1500 ℃, melting 1.5h, water quenching, drying, crushing, and ball milling for 5h to obtain glass-ceramic frit. Ceramic raw materials weighed in the following proportion: 100% Al 2 o 3, The ceramic material after ball milling for 6h. Mix the glass-ceramic material and the ceramic material at a ratio of 1:1, ball mill for 6 hours in an anhydrous ethanol medium, and dry and sieve to obtain a low-temperature co-fired vitrified bond. Mix CBN, low-temperature co-fired vitrified binder and acrylic acid at a ratio of 40:100:10, mix well and place it in a 3D printing device to obtain a polymer to be fired. The firing temperature of the polymer is 800°C, the heating rate is 15°C / min, and the temperature is kept for 1.5h to obtain the low-temperature co-fired vitrified bond superabrasive aggreg...

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Abstract

The invention discloses a preparation method of a low-temperature co-fired ceramic super-hard abrasive polymer based on 3D printing, and belongs to the field of additive manufacturing and super-hard material preparation. The method comprises following steps: preparing a 3D printed low-temperature co-fired ceramic bonding agent; step 2, mixing the low-temperature co-fired ceramic bonding agent, a super-hard abrasive and an adhesive, and molding the mixture in 3D printing equipment to obtain a to-be-fired polymer; and step 3, placing the obtained polymer to be sintered in an environment of 700-1000 DEG C at a heating rate of 2-20 DEG C / min, and maintaining the temperature for 0.5-3 hours to prepare the low-temperature co-fired ceramic super-hard abrasive polymer based on 3D printing. The low-temperature co-fired ceramic bonding agent can be reliably connected with a super-hard abrasive, the bonding strength is improved, the microcrystalline glass is formed through high-temperature smelting, and the microcrystalline glass in the low-temperature co-fired ceramic can permeate into gaps between ceramic particles and super-hard abrasive particles in the sintering process, so that the compactness of the prepared polymer is improved.

Description

technical field [0001] The invention relates to a method for preparing a low-temperature co-fired ceramic superhard abrasive polymer based on 3D printing, and belongs to the fields of additive manufacturing and superhard material preparation. Background technique [0002] In aerospace, national defense and high-end equipment manufacturing fields, due to their special industry attributes, the materials involved often need to meet the requirements of high hardness, high wear resistance and reliable connection strength. Diamond is extremely hard and thus has excellent wear resistance. Compared with diamond, cubic boron nitride (CBN) is a new type of artificially synthesized superhard material, which has a lower affinity with ferrous metals, so it has a wider range of processing applications than diamond. Diamond and CBN are the most widely used known superhard materials. [0003] Ceramic materials have the characteristics of high hardness, wear resistance, and good chemical i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/5831C04B35/5835C04B35/528C04B35/622C04B35/626C03C10/00C03C12/00B33Y10/00B33Y70/10
CPCB33Y10/00B33Y70/00C03C10/0018C03C12/00C04B35/528C04B35/5831C04B35/622C04B35/62605C04B2235/3217C04B2235/3244C04B2235/365C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96
Inventor 仲怀民孟祥龙肖悦肖皓中蔡爱武
Owner 江苏新砺河磨具科技有限公司
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