CN104387037A - High-lubricity ceramic for cutting tool and preparation method of ceramic - Google Patents

Abstract

The invention discloses high-lubricity ceramic for a cutting tool. The ceramic is prepared from the following raw materials in parts by weight: 1-2 parts of minium, 2-3 parts of calcium carbonate, 12-16 parts of yttria, 60-65 parts of alumina, 1-2 parts of chromium oxide, 1-2 parts of nano-silver, 3-4 parts of BaCO3, 7-10 parts of aluminum hydroxide, 23-27 parts of feldspar, 2-3 parts of sodium carbonate, a proper amount of ethanol, 1.5-2 parts of a silane coupling agent kh-550, 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 antiwear aid. The ceramic is uniform, fine and smooth in texture, is high in hardness and is good in wear resistance and lubricity. With the adoption of the ceramic, the cut workpiece is clean, tidy and bright, and the using amount of cutting fluid is reduced. According to the ceramic disclosed by the invention, with the addition of the nano-silver, the ceramic has antibacterial function and corrosion resistances; with the use of the antiwear additive, the wear resistance and the heat resistance of the ceramic can be improved.

Description

Cutting tool pottery that a kind of oilness is good and preparation method thereof

Technical field

The present invention relates to ceramic cutting tool material field, particularly relate to good cutting tool pottery of a kind of oilness and preparation method thereof.

Background technology

Along with the development of new technology revolution, require the development improving constantly machining productivity and reduce production cost, particularly numerically-controlled machine, require the new-type cutter that exploitation is higher than inserted tool cutting speed, more wear-resisting.A few days ago various high strength, high rigidity, corrosion-resistant, wear-resisting and resistant to elevated temperatures be difficult to cut novel material increasing.Estimate according to document, this kind of material oneself account for and process more than 50% of sum in the world., inserted tool to the difficult processing of wherein many novel materials with competent.On the other hand, now in the world Wimet output oneself reach 20000-25 000 t.The metal that annual consumption is a large amount of, as W, Co, Ta and Nb etc.The Mineral resources of these metals reduce just day by day, price increase, press spending rate a few days ago, have more than is needed decades. and some resource will exhaust.Sintex is exactly grow up in this context.

Current sintex is the most extensive with ceramic applications such as zirconia ceramics, aluminum oxide, aluminium nitride, there is high rigidity, high-density, high temperature resistant, the features such as diamagneticization, anti-oxidant, erosion resistance is strong, chemical stability is good, high-wearing feature is good, but these ceramic costs are high, also need the material that research is new further, reduce costs, also will improve the performances such as ceramics toughness, thermal diffusivity, heat-shock resistance, resistance to abrasion, to adapt to the technical requirements of development.

Summary of the invention

Cutting tool pottery that the object of the present invention is to provide a kind of oilness good and preparation method thereof, this ceramic quality uniform and smooth, hardness is high, and wear resistance is good, oilness is good, the workpiece of cutting, as neat as wax, reducing the usage quantity of cutting fluid, by adding nanometer silver, there is the effect of Antimicrobial preservative.

Technical scheme of the present invention is as follows:

The cutting tool pottery that a kind of oilness is good, is characterized in that being made up of the raw material of following weight part: red lead 1-2, calcium carbonate 2-3, yttrium oxide 12-16, aluminum oxide 60-65, chromic oxide 1-2, nanometer silver 1-2, BaCO3 3-4, aluminium hydroxide 7-10, feldspar 23-27, soda ash 2-3, appropriate amount of ethanol, silane coupling agent kh-550 1.5-2, deionized water are appropriate, polyacrylic acid 1-1.5, polyoxyethylene glycol 1.2-1.6, wear-resistant auxiliary agent 4-5;

Described wear-resistant auxiliary agent is made up of the raw material of following weight part: magnesium borate crystal whisker 1.3-1.5, boric acid ester coupler 0.2-0.4, butter of antimony 0.3-0.5, urea 0.4-0.5, aluminium borate whisker 0.8-1.2, nano micro crystal cellulose 0.2-0.4, Y2Si2O7 whisker 1-2, stannic oxide 0.2-0.3, nano-graphite 0.4-0.8,1-2% hydrochloric acid soln is appropriate, water is appropriate, preparation method is: by butter of antimony, urea, nano micro crystal cellulose, stannic oxide adds in the water of 8-10 weight part, magnetic agitation 20-25 minute, add magnesium borate crystal whisker, aluminium borate whisker, Y2Si2O7 whisker continues to stir 2-3 hour, add boric acid ester coupler again, be heated to 70-80 DEG C, stirring reaction 20-30 minute, add nano-graphite again, stir 20-30 minute, drying is stirred in 120-130 DEG C of oil bath, send into calcining furnace, in nitrogen atmosphere, 50-60 minute is calcined at 700-800 DEG C, the 1-2% hydrochloric acid soln adding 2-3 times of weight part washs 2-3 time, be washed to neutrality, dry, pulverize, cross 40 mesh sieves, obtain.

The preparation method of the cutting tool pottery that described oilness is good, is characterized in that comprising the following steps:

(1) by ball milling after yttrium oxide, aluminium hydroxide, aluminum oxide mixing, cross 250 mesh sieves, add the water of 4-5 times of weight part, add silane coupling agent kh-550 after stirring, be heated to 70-80 DEG C, stir 10-15 minute, add nanometer silver again, continue to stir 30-40 minute, spraying dry, obtain particle, then send in calcining furnace, in nitrogen atmosphere, 40-50 minute is calcined at 700-800 DEG C, pulverize, cross 200 mesh sieves, obtain particle;

(2) by calcium carbonate, chromic oxide, BaCO3, feldspar, soda ash mixing, add the ethanol of 0.8-1 times of weight part, be milled to below 200 orders, dry, obtain particle;

(3) particle first two steps obtained mixes with other remaining components, get the deionized water of 3-4 times of weight part of mixing material, add polyacrylic acid, polyoxyethylene glycol, stir, add mixing material, ball milling 1-2 hour, ultrasonic disperse 13-17 minute, dry at 110-120 DEG C, cross 40 mesh sieves, obtain particle;

(4) particle (3) step obtained is in nitrogen atmosphere, and hot pressing at 1610-1670 DEG C, hot pressing pressure is 25-30MPa, and hot pressing time is 40-50 minute, and naturally cooling, to obtain final product.

Beneficial effect of the present invention

Ceramic quality uniform and smooth of the present invention, hardness is high, and wear resistance is good, and oilness is good, and the workpiece of cutting is as neat as wax, reduces the usage quantity of cutting fluid, by adding nanometer silver, has the effect of Antimicrobial preservative; The wear-resistant auxiliary agent of the application of the invention, can increase wear resistance and the thermotolerance of pottery.

Embodiment

The cutting tool pottery that a kind of oilness is good, is made up of the raw material of following weight part (kilogram): red lead 1.5, calcium carbonate 2.5, yttrium oxide 14, aluminum oxide 63, chromic oxide 1.5, nanometer silver 1.5, BaCO3 3.5, aluminium hydroxide 9, feldspar 25, soda ash 2.5, appropriate amount of ethanol, silane coupling agent kh-550 1.8, deionized water are appropriate, polyacrylic acid 1.3, polyoxyethylene glycol 1.4, wear-resistant auxiliary agent 4.5;

Described wear-resistant auxiliary agent is made up of the raw material of following weight part (kilogram): magnesium borate crystal whisker 1.4, boric acid ester coupler 0.3, butter of antimony 0.4, urea 0.4, aluminium borate whisker 1, nano micro crystal cellulose 0.3, Y2Si2O7 whisker 1.5, stannic oxide 0.3, nano-graphite 0.6,1.5% hydrochloric acid soln is appropriate, water is appropriate, preparation method is: by butter of antimony, urea, nano micro crystal cellulose, stannic oxide adds in the water of 9 weight parts, magnetic agitation 23 minutes, add magnesium borate crystal whisker, aluminium borate whisker, Y2Si2O7 whisker continues stirring 2.5 hours, add boric acid ester coupler again, be heated to 75 DEG C, stirring reaction 25 minutes, add nano-graphite again, stir 25 minutes, drying is stirred in 125 DEG C of oil baths, send into calcining furnace, in nitrogen atmosphere, calcine 55 minutes at 750 DEG C, 1.5% hydrochloric acid soln adding 2.5 times of weight parts washs 2.5 times, be washed to neutrality, dry, pulverize, cross 40 mesh sieves, obtain.

The preparation method of the cutting tool pottery that described oilness is good, comprises the following steps:

(1) by ball milling after yttrium oxide, aluminium hydroxide, aluminum oxide mixing, cross 250 mesh sieves, add the water of 4.5 times of weight parts, add silane coupling agent kh-550 after stirring, be heated to 75 DEG C, stir 14 minutes, add nanometer silver again, continue stirring 35 minutes, spraying dry, obtain particle, then send in calcining furnace, in nitrogen atmosphere, calcine 45 minutes at 750 DEG C, pulverize, cross 200 mesh sieves, obtain particle;

(2) by calcium carbonate, chromic oxide, BaCO3, feldspar, soda ash mixing, add the ethanol of 0.9 times of weight part, be milled to below 200 orders, dry, obtain particle;

(3) particle first two steps obtained mixes with other remaining components, get the deionized water of 3.5 times of weight parts of mixing material, add polyacrylic acid, polyoxyethylene glycol, stir, add mixing material, ball milling 1.5 hours, ultrasonic disperse 15 minutes, dry at 115 DEG C, cross 40 mesh sieves, obtain particle;

(4) particle (3) step obtained is in nitrogen atmosphere, and hot pressing at 1640 DEG C, hot pressing pressure is 28MPa, and hot pressing time is 45 minutes, and naturally cooling, to obtain final product.

Experimental data:

The Vickers' hardness of this embodiment pottery is 101GPa, and bending strength is 1188MPa, and fracture toughness property is 12MPam ^1/2.

Claims (2)

1. the cutting tool pottery that an oilness is good, is characterized in that being made up of the raw material of following weight part: red lead 1-2, calcium carbonate 2-3, yttrium oxide 12-16, aluminum oxide 60-65, chromic oxide 1-2, nanometer silver 1-2, BaCO3 3-4, aluminium hydroxide 7-10, feldspar 23-27, soda ash 2-3, appropriate amount of ethanol, silane coupling agent kh-550 1.5-2, deionized water are appropriate, polyacrylic acid 1-1.5, polyoxyethylene glycol 1.2-1.6, wear-resistant auxiliary agent 4-5;

Described wear-resistant auxiliary agent is made up of the raw material of following weight part: magnesium borate crystal whisker 1.3-1.5, boric acid ester coupler 0.2-0.4, butter of antimony 0.3-0.5, urea 0.4-0.5, aluminium borate whisker 0.8-1.2, nano micro crystal cellulose 0.2-0.4, Y2Si2O7 whisker 1-2, stannic oxide 0.2-0.3, nano-graphite 0.4-0.8,1-2% hydrochloric acid soln is appropriate, water is appropriate, preparation method is: by butter of antimony, urea, nano micro crystal cellulose, stannic oxide adds in the water of 8-10 weight part, magnetic agitation 20-25 minute, add magnesium borate crystal whisker, aluminium borate whisker, Y2Si2O7 whisker continues to stir 2-3 hour, add boric acid ester coupler again, be heated to 70-80 DEG C, stirring reaction 20-30 minute, add nano-graphite again, stir 20-30 minute, drying is stirred in 120-130 DEG C of oil bath, send into calcining furnace, in nitrogen atmosphere, 50-60 minute is calcined at 700-800 DEG C, the 1-2% hydrochloric acid soln adding 2-3 times of weight part washs 2-3 time, be washed to neutrality, dry, pulverize, cross 40 mesh sieves, obtain.

2. the preparation method of the cutting tool pottery that oilness is good according to claim 1, is characterized in that comprising the following steps:

(1) by ball milling after yttrium oxide, aluminium hydroxide, aluminum oxide mixing, cross 250 mesh sieves, add the water of 4-5 times of weight part, add silane coupling agent kh-550 after stirring, be heated to 70-80 DEG C, stir 10-15 minute, add nanometer silver again, continue to stir 30-40 minute, spraying dry, obtain particle, then send in calcining furnace, in nitrogen atmosphere, 40-50 minute is calcined at 700-800 DEG C, pulverize, cross 200 mesh sieves, obtain particle;

(2) by calcium carbonate, chromic oxide, BaCO3, feldspar, soda ash mixing, add the ethanol of 0.8-1 times of weight part, be milled to below 200 orders, dry, obtain particle;

(3) particle first two steps obtained mixes with other remaining components, get the deionized water of 3-4 times of weight part of mixing material, add polyacrylic acid, polyoxyethylene glycol, stir, add mixing material, ball milling 1-2 hour, ultrasonic disperse 13-17 minute, dry at 110-120 DEG C, cross 40 mesh sieves, obtain particle;

(4) particle (3) step obtained is in nitrogen atmosphere, and hot pressing at 1610-1670 DEG C, hot pressing pressure is 25-30MPa, and hot pressing time is 40-50 minute, and naturally cooling, to obtain final product.