A kind of high wear resistance cutting ceramics and preparation method thereof

Abstract

The invention discloses high-abrasion-resistance cutting ceramic. The high-abrasion-resistance cutting ceramic is prepared from the following raw materials in parts by weight: 2-3 parts of aluminum sol, 1-2 parts of silica sol, 10-14 parts of titania crystal whiskers, 10-15 parts of tantalum carbide crystal whiskers, 10-15 parts of potassium hexatitanate crystal whiskers, 10-14 parts of beta-Si3N4 crystal whiskers, 4-6 parts of sodium metaaluminate, 40-45 parts of aluminium nitride, a proper amount of ethyl alcohol, a proper amount of deionized water, 1-1.5 parts of polyacrylic acid, 1.2-1.6 parts of polyethylene glycol and 4-5 parts of an abrasion-resistant additive. The high-abrasion-resistance cutting ceramic is high in hardness, and especially high in bending resistance and abrasion resistance, is suitable for manufacturing cutting tools, has working durability; by virtue of application of the abrasion-resistant additive, the abrasion resistance and the heat resistance of the ceramic can be improved.

Description

technical field [0001] The invention relates to the field of ceramic tool materials, in particular to a high wear resistance cutting ceramic 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 hig...

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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., but the cost of these ceramics is relatively high. However, it is necessary to further study new ceramic materials to reduce costs and improve the performance of ceramic tools such as toughness, heat dissipation, bending resistance, and wear resistance.