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Ceramic cutter material and preparation method thereof

A technology of ceramic knives and purity, applied in the field of knives preparation, can solve the problems of low mechanical properties of ceramic knives materials, achieve uniform microstructure, refine hard phase particles, and improve mechanical properties

Inactive Publication Date: 2020-10-16
南京鼎久机械装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the invention is to provide a ceramic cutting tool material and its preparation method, which solves the problem of low mechanical properties of the ceramic cutting tool material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A ceramic tool material, the composition of the material by mass percentage is: TiC is 18%, TiN is 5%, MgO is 0.5%, Mo is 0.5%, Ni is 1%, and the rest are Al 2 O 3 ; where Al 2 O 3 0.5µm Al 2 O 3 Powder, its purity is 99.9%; TiC and TiN are both 0.3μm powder, the purity is >99%; MgO is 1μm MgO powder, the purity is >98%.

[0022] The preparation method of the ceramic cutting tool material comprises the following steps:

[0023] (1) batching is carried out according to the composition mass percentage of the material;

[0024] (2) mixing the above-mentioned ingredients, and the obtained mixed powder is ball-milled with dehydrated alcohol as a medium, and the ball-milling speed is 800r / min, and the time is 36h;

[0025] (3) Put the ball milled mixed slurry into a vacuum drying oven for drying, the temperature of vacuum drying is 150°C, the drying time is 1h, and the powder after drying is sieved with a 100-mesh sample sieve;

[0026] (4) The mixed powder after sievi...

Embodiment 2

[0028] A ceramic cutting tool material, the composition of the material by mass percentage is: TiC is 20%, TiN is 8%, MgO is 3.5%, Mo is 1%, Ni is 1.5%, and the rest are Al 2 O 3 ; where Al 2 O 3 0.6µm Al 2 O 3 Powder, its purity is 99.9%; TiC and TiN are both 0.5μm powder, both purity > 99%; MgO are 1.5μm MgO powder, both purity > 98%.

[0029] The preparation method of the ceramic cutting tool material comprises the following steps:

[0030] (1) batching is carried out according to the composition mass percentage of the material;

[0031] (2) the above-mentioned ingredients are mixed, and the obtained mixed powder is ball-milled with absolute ethanol as a medium, and the ball-milling speed is 900r / min and the time is 42h;

[0032] (3) Put the ball milled mixed slurry into a vacuum drying oven for drying, the temperature of vacuum drying is 180°C, the drying time is 1.5h, and the powder after drying is sieved with a 150-mesh sample sieve;

[0033] (4) The mixed powder ...

Embodiment 3

[0035] A ceramic tool material, the composition of the material by mass percentage is: TiC is 22%, TiN is 10%, MgO is 5.5%, Mo is 1.5%, Ni is 2%, and the rest are Al 2 O 3 ; where Al 2 O 3 0.8µm Al 2 O 3 Powder, its purity is 99.9%; TiC and TiN are both 0.6μm powder, the purity is >99%; MgO is 2μm MgO powder, the purity is >98%.

[0036] The preparation method of the ceramic cutting tool material comprises the following steps:

[0037] (1) batching is carried out according to the composition mass percentage of the material;

[0038] (2) mixing the above-mentioned ingredients, and the obtained mixed powder is ball-milled with absolute ethanol as a medium, and the ball-milling speed is 1000r / min, and the time is 48h;

[0039] (3) Put the ball milled mixed slurry into a vacuum drying oven for drying, the temperature of vacuum drying is 200°C, the drying time is 2h, and the powder after drying is sieved with a 200-mesh sample sieve;

[0040] (4) The mixed powder after sievi...

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PUM

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Abstract

The invention discloses a ceramic cutter material and a preparation method thereof. The ceramic cutter material comprises the following components by mass percentage: 18-22% of TiC, 5-10% of TiN, 0.5-5.5% of MgO, 0.5-1.5% of Mo, 1-2% of Ni and the balance Al2O3. The preparation method comprises the following steps of: conducting burdening according to the mass percent; mixing the ingredients to obtain mixed powder, and performing ball milling on the mixed powder by taking anhydrous ethanol as a medium; putting the ball-milled and mixed slurry into a vacuum drying oven for drying, and sieving the dried powder by using a 100-200mesh sample sieve; and sintering the sieved mixed powder in a vacuum sintering furnace to obtain the ceramic cutter material. The component proportion and technological parameters of the ceramic cutter material are optimized, and the Al2O3-based ceramic cutter material with excellent comprehensive performance is prepared.

Description

technical field [0001] The invention belongs to the technical field of tool preparation, in particular to a ceramic tool material and a preparation method thereof. Background technique [0002] High-speed cutting can greatly improve productivity and machining accuracy, and significantly reduce manufacturing costs. It has now become the main means of cutting hardened steel and other high-hardness materials. However, the hardened steel has poor plastic deformation, large cutting force, and high cutting temperature during processing, which makes the tool material prone to oxidative wear and chipping; or low efficiency, and the processing quality cannot achieve the expected effect. In order to ensure processing quality and improve processing efficiency, matching tool materials must be selected according to the characteristics of hardened steel. The alumina-based ceramic tool material has sufficient strength, toughness, high hardness and high wear resistance, and can effectively...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622C04B35/63
CPCC04B35/10C04B35/622C04B35/6303C04B2235/3206C04B2235/3843C04B2235/3886C04B2235/404C04B2235/5436C04B2235/5445C04B2235/656C04B2235/6567C04B2235/6581
Inventor 方小山诸玉根方正林
Owner 南京鼎久机械装备有限公司