Self-lubricating wear-resistant ceramic for cutting tools and preparation method thereof

Abstract

The invention relates to a self-lubricating wear-resistant ceramic for cutting tools, which is prepared from the following raw materials in parts by weight: 2-3 parts of bismuth sulfide, 2-3 parts of diethanolamine, 2-3 parts of ammonium sulfate, 2-3 parts of magnesium chloride, 2-3 parts of calcium carbide sludge, 2-3 parts of graphene oxide, 0.6-0.8 part of KOH, 0.2-0.3 part of polyoxyethylene castor oil, 3-4 parts of magnesium oxide, 36-40 parts of titanium boride, 4-5 parts of nano tungsten trioxide, 30-35 parts of titanium carbide, 3-5 parts of beryllium oxide, 1-2 parts of silver powder, a right amount of ethanol, a right amount of deionized water, 1-1.5 parts of polyacrylic acid, 1.2-1.6 parts of polyethyleneglycol and 4-5 parts of antiwear assistant. The added nano tungsten trioxide enhances the high temperature resistance of the ceramic. The ceramic has the characteristics of high temperature resistance, high carrying capacity, self lubrication, thermal shock resistance, high wear resistance and the like, and is suitable for manufacturing cutting tools. The antiwear assistant can enhance the wear resistance and heat resistance of the ceramic.

Description

technical field [0001] The invention relates to the field of ceramic tool materials, in particular to a self-lubricating wear-resistant ceramic for 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 pr...

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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.