Ceramic for high strength cutting tool and preparation method of same

A cutting tool and high-strength technology, which is applied in the field of ceramics for high-strength cutting tools and its preparation, can solve the problems of high cost and few types of ceramics, and achieve the effects of high hardness, long service life and relatively low cost.

Inactive Publication Date: 2015-03-04
HEFEI WANWEI ELECTRICAL EQUIP ENG
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  • Abstract
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Problems solved by technology

[0003] At present, ceramic knives have many excellent properties, such as high hardness, high density, high temperature resistance, anti-magnetization, anti-oxidation, strong corrosion resistance, good chemical stability, high wear resistance, etc.,...

Method used

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Embodiment Construction

[0015] A ceramic for high-strength cutting tools, made of the following raw materials in parts by weight (kg): magnesite 1.5, aluminum oxide 12, barium oxide 5, bone ash 1.1, nano-zinc oxide 3.5, calcium oxide 2.5, zirconia 51, α-Al2O3 whiskers 23, AlN whiskers 16, ethanol amount, carboxymethyl cellulose 0.3, deionized water amount, polyacrylic acid 1.3, polyethylene glycol 1.4, antiwear additive 4.5;

[0016] The anti-wear additive is made of the following raw materials in parts by weight (kg): 0.2 lanthanum oxide, 0.8 nano-zirconia, 0.4 yttrium trioxide, 0.4 nano-alumina, 6 acetic acid, 0.4 yttrium nitrate, 3.3 zirconium oxychloride , an appropriate amount of 1.5% hydrochloric acid solution, and an appropriate amount of water; the preparation method is: add yttrium nitrate and zirconium oxychloride to 27 parts by weight of water, stir and dissolve, add acetic acid dropwise, stir magnetically for 4.5 hours, add nano-zirconia, nano-alumina , continue to stir for 2.5 hours, put...

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Abstract

The invention relates to ceramic for a high strength cutting tool. The ceramic for the high strength cutting tool is prepared from the following raw materials in parts by weight: 1-2 parts of magnesite, 10-14 parts of aluminium oxide, 3-6 parts of barium oxide, 1-1.2 parts of bone ash, 3-4 parts of nano zinc oxide, 2-3 parts of calcium oxide, 47-55 parts of zirconium oxide, 20-25 parts of alpha-Al2O3 whisker, 15-18 parts of AlN whisker, right amount of ethyl alcohol, 0.3-0.4 part of carboxymethylcellulose, right amount of deionized water, 1-1.5 parts of polyacrylic acid, 1.2-1.6 parts of polyethylene glycol and 4-5 parts of anti-wear auxiliary. The ceramic for the high strength cutting tool has extremely high hardness, heat resistance and abrasion resistance of zirconium oxide ceramic; meanwhile, the alpha-Al2O3 whisker and AlN whisker are added, so that the ceramic for the high strength cutting tool has excellent toughness and is especially applicable to manufacturing of a cutting tool, service life is long, and relative cost is low; and abrasion resistance and heat resistance of the ceramic can be enhanced by adopting the anti-wear auxiliary.

Description

technical field [0001] The invention relates to the field of ceramic tool materials, in particular to a ceramic for high-strength cutting tools and a preparation method thereof. Background technique [0002] At present, carbide-based cemented carbide (WC-Co, WC-TiC-Co) is widely used in cutting steel, cast iron, alloy steel and stainless steel. For some special materials, diamond and cubic boron nitride (CBN) with the highest hardness are also used, but their strength is lower than that of cemented carbide, and diamond tools are not conducive to cutting steel materials, because diamonds with carbonaceous elements are easily combined with iron elements. The reaction produces iron carbide, which causes diamond loss. The ceramic tool does not react to many materials such as iron-based, and has better performance for processing chilled cast iron, Stellite alloy, heat-resistant nickel-based alloy, etc. [0003] At present, ceramic knives have many excellent properties, such as ...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/81C04B35/63C04B35/622
Inventor 朱江玲
Owner HEFEI WANWEI ELECTRICAL EQUIP ENG
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