Green and environment-friendly ceramic cutter material and preparation method thereof

A green and environmentally friendly technology for ceramic knives, applied in the field of structural ceramic materials, can solve problems such as endangering workers' health, increasing manufacturing costs, and environmental pollution

Pending Publication Date: 2022-01-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the frequent use of cutting fluid will cause environmental pollution, endanger the health of workers, and increase manufacturing costs. Machining without cutting fluid becomes of great significance

Method used

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  • Green and environment-friendly ceramic cutter material and preparation method thereof
  • Green and environment-friendly ceramic cutter material and preparation method thereof
  • Green and environment-friendly ceramic cutter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A green and environment-friendly ceramic tool material and a preparation method thereof, comprising the following steps:

[0028] Step S1, the mass ratio of the weighed nano-lignin, silicon nitride powder and magnesium oxide, yttrium oxide mixed powder is 2:88:10, mix evenly and dry to obtain a composite powder; nano-lignin is extracted from poplar, which is green and environmentally friendly. regeneration. And the nano lignin extracted from poplar can be converted into graphene-like materials, forming a coating layer on the surface of silicon nitride grains. When the material breaks, it can passivate the branches, deflection and bridging of the cracks. The bridging of the cracks is formed by the cracking and bridging of the graphene-like film composed of graphene-like materials on the surface after the silicon nitride grains break. Improve material fracture toughness.

[0029] Step S2, after mixing the mixed powder with a small amount of absolute ethanol, ball millin...

Embodiment 2

[0038] A green and environment-friendly ceramic tool material and a preparation method thereof, comprising the following steps:

[0039] Step S1, the mass ratio of the weighed nano-lignin, silicon nitride powder and magnesium oxide, yttrium oxide mixed powder is 4:87:9, mix evenly and dry to obtain a composite powder; nano-lignin is extracted from poplar;

[0040] Step S2, after mixing the mixed powder with a small amount of absolute ethanol, ball milling with a zirconia grinding body to obtain a mixed slurry;

[0041] Step S3, drying the mixed slurry obtained in step S2 with a vacuum drying oven to obtain a composite powder;

[0042] Step S4, grinding the composite powder obtained in step S3, and sieving with an 80-mesh sieve to obtain a composite powder with a suitable particle size;

[0043] Step S5, using a three-dimensional mixer to mix the composite powder obtained in step S4 to obtain a mixed composite powder;

[0044] Step S6, put the composite powder obtained in ste...

Embodiment 3

[0049] A green and environment-friendly ceramic tool material and a preparation method thereof, comprising the following steps:

[0050]In step S1, the mass ratio of the weighed nano-lignin, silicon nitride powder, magnesium oxide, and yttrium oxide mixed powder is 1:89:10, and the mixed powder is uniformly dried to obtain a composite powder; the nano-lignin is extracted from poplar;

[0051] Step S2, after mixing the mixed powder with a small amount of absolute ethanol, ball milling with a zirconia grinding body to obtain a mixed slurry;

[0052] Step S3, drying the mixed slurry obtained in step S2 with a vacuum drying oven to obtain a composite powder;

[0053] Step S4, grinding the composite powder obtained in step S3, and sieving with a 90-mesh sieve to obtain a composite powder with a suitable particle size;

[0054] Step S5, using a three-dimensional mixer to mix the composite powder obtained in step S4 to obtain a mixed composite powder;

[0055] Step S6, put the comp...

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Abstract

The invention provides a green and environment-friendly ceramic cutter material and a preparation method thereof. The preparation method comprises the following steps of 1, taking 87-89wt% of silicon nitride, 2-4wt% of nano lignin, 9-11wt% of magnesium oxide and 9-11wt% of yttrium oxide, uniformly mixing, and drying to obtain mixed powder, wherein the nano lignin is extracted from poplar, 2, mixing the mixed powder with absolute ethyl alcohol, and grinding to obtain uniformly mixed slurry, 3, drying the mixed slurry obtained in the step 2 to obtain uniformly mixed composite powder, and 4, loading the composite powder obtained in the step 35 into a mold and conducting hot pressing sintering under the protection of the nitrogen atmosphere, wherein the sintering temperature ranges from 1700 DEG C to 1800 DEG C, the pressure ranges from 30 MPa to 40 MPa, the heat preservation and pressure maintaining time ranges from 30 min to 60 min, heat preservation is conducted for 30 min to 40 min when the temperature is increased to 800 DEG C to 850 DEG C, and the green and environment-friendly ceramic cutter material is obtained. The used raw materials are green, the preparation method is simple, the prepared cutter can achieve low friction coefficient and wear rate without using a cutting fluid, and the fracture toughness is improved.

Description

technical field [0001] The invention belongs to the technical field of structural ceramic materials, in particular to a green and environment-friendly ceramic tool material and a preparation method thereof. Background technique [0002] The machinery manufacturing industry is the foundation of the national industry and occupies an important position in the national economy, while metal cutting is one of the most basic means of implementation and key links in machinery manufacturing. Commonly used cutting tools mainly include cemented carbide materials and ceramic materials. Ceramic materials such as silicon nitride ceramic materials have better strength, hardness and wear resistance than cemented carbide, and are more promising as tool materials, but nitride Due to its own brittleness, silicon material is prone to brittle cracking, which seriously hinders its use and promotion as a cutting tool. Therefore, the fracture toughness can be improved by adding a second phase to pr...

Claims

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Application Information

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IPC IPC(8): C04B35/584C04B35/645B26B9/00
CPCC04B35/584C04B35/645B26B9/00C04B35/636C04B2235/3206C04B2235/3225C04B2235/96C04B2235/77C04B2235/658
Inventor 陈威赵自强焦小雨刘星宇成坤朱朝龙吴晨静刘宣彤
Owner SHAANXI UNIV OF SCI & TECH
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