CN105777170B - A kind of self-lubrication ceramic bearing and preparation method thereof - Google Patents

A kind of self-lubrication ceramic bearing and preparation method thereof Download PDF

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CN105777170B
CN105777170B CN201610216471.5A CN201610216471A CN105777170B CN 105777170 B CN105777170 B CN 105777170B CN 201610216471 A CN201610216471 A CN 201610216471A CN 105777170 B CN105777170 B CN 105777170B
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parts
oil
self
ceramic bearing
weight
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CN105777170A (en
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姚振红
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Enun science and Technology (Luanxian) Co., Ltd.
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Enun Science And Technology (luanxian) Co Ltd
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  • Ceramic Engineering (AREA)
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  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Lubricants (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The invention discloses a kind of self-lubrication ceramic bearing and preparation method thereof, which is prepared by the component of following parts by weight：Zirconium oxide, boron nitride, diatomite, flyash, chromium carbide, zinnwaldite, graphite fibre, gallic oxide, cellulose ether, iodate Asia europium, strontium oxide strontia, aluminium fluoric acid sodium, aluminium borate whisker fluorination niobium, combination oil；The combination oil is made of diesel oil, castor oil and lubricating oil.The comprehensive performance of self-lubrication ceramic bearing prepared by the present invention is good, and fracture toughness reaches 10.1 MPa m1/2More than, radial crushing strength reaches more than 315MPa, and hardness is up to more than 52HB, meets practical application request.The preparation process of the present invention is simple, meets industrialized production needs.

Description

A kind of self-lubrication ceramic bearing and preparation method thereof
Technical field
The invention belongs to bearing material technical field, and in particular to a kind of self-lubrication ceramic bearing and preparation method thereof.
Background technology
Bearing is a kind of important spare part in mechanical equipment, its major function is the mechanical rotary body of support, reduces its fortune Friction coefficient during dynamic, and ensure its rotating accuracy.Rolling bearing and sliding axle can be divided into according to the operation principle of bearing Hold.The lubricating system of bearing is generally self-lubricating or addition lubricant lubrication two ways.Wherein self-lubricating bearing has and makes an uproar Sound is small, cost is low and it is easy to use do not have to supplemental lubrication finish feature, be especially suitable for some cannot be not easy to add lubricant etc. Field.Existing self-lubricating bearing is mostly immersion lubrication agent, increased immersion lubrication agent caking ability it is smaller, in certain journey Self-lubricating bearing material internal organizational structure is affected on degree, is had necessarily to the hardness, toughness, bearing capacity of self-lubricating bearing Influence.
The content of the invention
The present invention to be solved at least one of prior art problem, there is provided a kind of self-lubrication ceramic bearing and its preparation side Method.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：
The invention discloses a kind of self-lubrication ceramic bearing, it is prepared by the component of following parts by weight：Zirconium oxide 60- 68 parts, 27-38 parts of boron nitride, 12-17 parts of diatomite, 7-16 parts of flyash, 10-15 parts of chromium carbide, zinnwaldite 5.7-8.6 Part, 2.5-6.4 parts of graphite fibre, 8.6-11 parts of gallic oxide, 2.4-7 parts of cellulose ether, europium 3.2-7.4 parts of iodate Asia, oxygen Change 150-200 parts 1.8-3.5 parts of strontium, 7-15 parts of aluminium fluoric acid sodium, 2-9 parts of aluminium borate whisker, 1.2-1.9 parts of niobium of fluorination, combination of oil；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
Preferably, the self-lubrication ceramic bearing, is prepared by the component of following parts by weight：65 parts of zirconium oxide, nitrogen Change 29 parts of boron, 16 parts of diatomite, 10.6 parts of flyash, 13.2 parts of chromium carbide, 6.4 parts of zinnwaldite, 4.7 parts of graphite fibre, three Aoxidize 10.2 parts of two gallium, 5.6 parts of cellulose ether, 4.2 parts of iodate Asia europium, 2.3 parts of strontium oxide strontia, 9 parts of aluminium fluoric acid sodium, aluminium borate whisker 5 parts, fluorination 1.6 parts of niobium, combination oil 185 parts；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
Preferably, the self-lubrication ceramic bearing, is prepared by the component of following parts by weight：62 parts of zirconium oxide, nitrogen Change 32 parts of boron, 15 parts of diatomite, 13 parts of flyash, 12.4 parts of chromium carbide, 7.1 parts of zinnwaldite, 5.2 parts of graphite fibre, three oxygen Change 9.3 parts of two gallium, 5.1 parts of cellulose ether, 6.7 parts of iodate Asia europium, 2.2 parts of strontium oxide strontia, 11.5 parts of aluminium fluoric acid sodium, aluminium borate whisker 7.2 parts, fluorination 1.4 parts of niobium, combination oil 192 parts；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
The present invention also provides a kind of preparation method of above-mentioned self-lubrication ceramic bearing, the preparation process are as follows：
（1）Above-mentioned powder is weighed by the weight, is subsequently placed in batch mixer and mixes 1-3h, after mixing It is spare；
（2）Above-mentioned uniformly mixed powder is placed in mould, it is compressing under 200-800MPa pressure, obtain density For 5.6-7.3g/cm3Base substrate；
（3）Above-mentioned base substrate is placed in sintering furnace under protective atmosphere and is sintered, its sintering schedule is：First at 450-680 DEG C Lower pre-burning 1-3h, enters back at 1480-1650 DEG C progress high temperature sintering 1-3h, be finally placed in cooled region with 10-20 DEG C/ The cooling velocity of min is cooled to room temperature, up to the sintered body；
（4）Above-mentioned sintered body is placed in combination oil after progress vacuum oil immersion processing up to the self-lubrication ceramic bearing, Its immersion oil treatment conditions is：Vacuum -0.04-0.1MPa, 70-130 DEG C of oil temperature, immersion oil time 5-24h.
Preferably, the step（2）In the density of base substrate of compacting be 6.4g/cm3。
The step（3）Middle sintering schedule is：The first pre-burning 2.5h at 520 DEG C, enters back into progress high temperature burning at 1510 DEG C 1.5h is tied, is finally placed in cooled region and is cooled to room temperature with the cooling velocity of 13 DEG C/min, up to the sintered body.
The step（4）In immersion oil treatment conditions be：Vacuum -0.06MPa, 96 DEG C of oil temperature, immersion oil time 12h.
As a result of above technical scheme, the present invention has the advantages that compared with prior art：
The comprehensive performance of self-lubrication ceramic bearing prepared by the present invention is good, and fracture toughness reaches 10.1 MPa m1/2With On, radial crushing strength reaches more than 315MPa, and hardness is up to more than 52HB, meets practical application request.According to test result Illustrate, zinnwaldite, cellulose ether and iodate Asia europium, and strontium oxide strontia, aluminium borate whisker and combination oil ingredient play respectively Synergistic effect, can further improve the comprehensive performance of self-lubrication ceramic bearing.The preparation process of the present invention is simple, meets industrialization Production needs.
Embodiment
With reference to specific embodiment, the present invention is described in further detail.Following embodiments are used to illustrate the present invention, But it is not limited to the scope of the present invention.
Embodiment 1
Self-lubrication ceramic bearing described in the present embodiment, is prepared by the component of following parts by weight：60 parts of zirconium oxide, nitrogen Change 27 parts of boron, 12 parts of diatomite, 7 parts of flyash, 10 parts of chromium carbide, 5.7 parts of zinnwaldite, 2.5 parts of graphite fibre, three oxidations two 8.6 parts of gallium, 2.4 parts of cellulose ether, 3.2 parts of iodate Asia europium, 1.8 parts of strontium oxide strontia, 7 parts of aluminium fluoric acid sodium, 2 parts of aluminium borate whisker, fluorine Change 1.2 parts of niobium, 150 parts of combination oil；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
The preparation method of self-lubrication ceramic bearing described in the present embodiment, the preparation process are as follows：
（1）Above-mentioned powder is weighed by the weight, is subsequently placed in batch mixer and mixes 1h, is uniformly mixed standby With；
（2）Above-mentioned uniformly mixed powder is placed in mould, compressing under 200MPa pressure, obtaining density is 5.6g/cm3Base substrate；
（3）Above-mentioned base substrate is placed in sintering furnace under protective atmosphere and is sintered, its sintering schedule is：It is first pre- at 450 DEG C 1h is burnt, progress high temperature sintering 1h at 1480 DEG C is entered back into, is finally placed in cooled region and is cooled down with the cooling velocity of 10 DEG C/min To room temperature, up to the sintered body；
（4）Above-mentioned sintered body is placed in combination oil after progress vacuum oil immersion processing up to the self-lubrication ceramic bearing, Its immersion oil treatment conditions is：Vacuum -0.04MPa, 70 DEG C of oil temperature, immersion oil time 5h.
Embodiment 2
Self-lubrication ceramic bearing described in the present embodiment, is prepared by the component of following parts by weight：Zirconium oxide 60-68 Part, 38 parts of boron nitride, 17 parts of diatomite, 16 parts of flyash, 15 parts of chromium carbide, 8.6 parts of zinnwaldite, 6.4 parts of graphite fibre, three Aoxidize 11 parts of two gallium, 7 parts of cellulose ether, 7.4 parts of iodate Asia europium, 3.5 parts of strontium oxide strontia, 15 parts of aluminium fluoric acid sodium, aluminium borate whisker 9 Part, 1.9 parts of niobium of fluorination, 200 parts of combination oil；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
The preparation method of self-lubrication ceramic bearing described in the present embodiment, the preparation process are as follows：
（1）Above-mentioned powder is weighed by the weight, is subsequently placed in batch mixer and mixes 3h, is uniformly mixed standby With；
（2）Above-mentioned uniformly mixed powder is placed in mould, compressing under 800MPa pressure, obtaining density is 7.3g/cm3Base substrate；
（3）Above-mentioned base substrate is placed in sintering furnace under protective atmosphere and is sintered, its sintering schedule is：It is first pre- at 680 DEG C 3h is burnt, progress high temperature sintering 3h at 1650 DEG C is entered back into, is finally placed in cooled region and is cooled down with the cooling velocity of 20 DEG C/min To room temperature, up to the sintered body；
（4）Above-mentioned sintered body is placed in combination oil after progress vacuum oil immersion processing up to the self-lubrication ceramic bearing, Its immersion oil treatment conditions is：Vacuum 0.1MPa, 130 DEG C of oil temperature, immersion oil time 24h.
Embodiment 3
Self-lubrication ceramic bearing described in the present embodiment, is prepared by the component of following parts by weight：64 parts of zirconium oxide, nitrogen Change 32 parts of boron, 15 parts of diatomite, 11 parts of flyash, 12 parts of chromium carbide, 7.2 parts of zinnwaldite, 4.5 parts of graphite fibre, three oxidations Two 9.8 parts of galliums, 4.7 parts of cellulose ether, 5.3 parts of iodate Asia europium, 2.6 parts of strontium oxide strontia, 11 parts of aluminium fluoric acid sodium, aluminium borate whisker 5.5 Part, 1.6 parts of niobium of fluorination, 175 parts of combination oil；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
The preparation method of self-lubrication ceramic bearing described in the present embodiment, the preparation process are as follows：
（1）Above-mentioned powder is weighed by the weight, is subsequently placed in batch mixer and mixes 2h, is uniformly mixed standby With；
（2）Above-mentioned uniformly mixed powder is placed in mould, compressing under 500MPa pressure, obtaining density is 6.5g/cm3Base substrate；
（3）Above-mentioned base substrate is placed in sintering furnace under protective atmosphere and is sintered, its sintering schedule is：It is first pre- at 565 DEG C 2h is burnt, progress high temperature sintering 2h at 1550 DEG C is entered back into, is finally placed in cooled region and is cooled down with the cooling velocity of 15 DEG C/min To room temperature, up to the sintered body；
（4）Above-mentioned sintered body is placed in combination oil after progress vacuum oil immersion processing up to the self-lubrication ceramic bearing, Its immersion oil treatment conditions is：Vacuum 0.03MPa, 100 DEG C of oil temperature, immersion oil time 15h.
Embodiment 4
Self-lubrication ceramic bearing described in the present embodiment, is prepared by the component of following parts by weight：65 parts of zirconium oxide, nitrogen Change 29 parts of boron, 16 parts of diatomite, 10.6 parts of flyash, 13.2 parts of chromium carbide, 6.4 parts of zinnwaldite, 4.7 parts of graphite fibre, three Aoxidize 10.2 parts of two gallium, 5.6 parts of cellulose ether, 4.2 parts of iodate Asia europium, 2.3 parts of strontium oxide strontia, 9 parts of aluminium fluoric acid sodium, aluminium borate whisker 5 parts, fluorination 1.6 parts of niobium, combination oil 185 parts；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
The preparation method of self-lubrication ceramic bearing described in the present embodiment, the preparation process are as follows：
（1）Above-mentioned powder is weighed by the weight, is subsequently placed in batch mixer and mixes 3h, is uniformly mixed standby With；
（2）Above-mentioned uniformly mixed powder is placed in mould, compressing under 550MPa pressure, obtaining density is 6.4g/cm3Base substrate；
（3）Above-mentioned base substrate is placed in sintering furnace under protective atmosphere and is sintered, its sintering schedule is：It is first pre- at 520 DEG C 2.5h is burnt, progress high temperature sintering 1.5h at 1510 DEG C is entered back into, is finally placed in cooled region with the cooling velocity of 13 DEG C/min It is cooled to room temperature, up to the sintered body；
（4）Above-mentioned sintered body is placed in combination oil after progress vacuum oil immersion processing up to the self-lubrication ceramic bearing, Its immersion oil treatment conditions is：Vacuum -0.06MPa, 96 DEG C of oil temperature, immersion oil time 12h.
Embodiment 5
Self-lubrication ceramic bearing described in the present embodiment, is prepared by the component of following parts by weight：Zirconium oxide 60-68 Part, 27-38 parts of boron nitride, 12-17 parts of diatomite, 7-16 parts of flyash, 10-15 parts of chromium carbide, 5.7-8.6 parts of zinnwaldite, 2.5-6.4 parts of graphite fibre, 8.6-11 parts of gallic oxide, 2.4-7 parts of cellulose ether, europium 3.2-7.4 parts of iodate Asia, strontium oxide strontia 1.8-3.5 parts, 7-15 parts of aluminium fluoric acid sodium, 2-9 parts of aluminium borate whisker, fluorination 1.2-1.9 part of niobium, combine 150-200 parts of oil；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
The preparation method of self-lubrication ceramic bearing described in the present embodiment, the preparation process are as follows：
（1）Above-mentioned powder is weighed by the weight, is subsequently placed in batch mixer and mixes 3h, is uniformly mixed standby With；
（2）Above-mentioned uniformly mixed powder is placed in mould, compressing under 550MPa pressure, obtaining density is 6.4g/cm3Base substrate；
（3）Above-mentioned base substrate is placed in sintering furnace under protective atmosphere and is sintered, its sintering schedule is：It is first pre- at 520 DEG C 2.5h is burnt, progress high temperature sintering 1.5h at 1510 DEG C is entered back into, is finally placed in cooled region with the cooling velocity of 13 DEG C/min It is cooled to room temperature, up to the sintered body；
（4）Above-mentioned sintered body is placed in combination oil after progress vacuum oil immersion processing up to the self-lubrication ceramic bearing, Its immersion oil treatment conditions is：Vacuum -0.06MPa, 96 DEG C of oil temperature, immersion oil time 12h.
Comparative example 1
It is with the difference of embodiment 1：This comparative example is free of zinnwaldite, cellulose ether and iodate Asia europium.
Comparative example 2
It is with the difference of embodiment 1：This comparative example is free of strontium oxide strontia and aluminium borate whisker, and the combination oil only wraps Include lubricating oil one pack system.
Performance test
Fracture toughness/MPa m1/2 Radial crushing strength/MPa Hardness/HB
Embodiment 1 10.6 315 52
Embodiment 2 10.1 324 56
Embodiment 3 11.2 321 53
Embodiment 4 11.8 334 58
Embodiment 5 12.1 332 59
Comparative example 1 9.2 308 45
Comparative example 2 8.7 306 42
As seen from the above table, the comprehensive performance of self-lubrication ceramic bearing prepared by the present invention is good, and fracture toughness reaches 10.1 MPa•m1/2More than, radial crushing strength reaches more than 315MPa, and hardness is up to more than 52HB, meets practical application request.
According to the test result of comparative example 1,2 and embodiment 1, zinnwaldite, cellulose ether and iodate Asia europium, and Strontium oxide strontia, aluminium borate whisker and combination oil ingredient have played synergistic effect respectively, can further improve the comprehensive of ceramic bearing Energy.

Claims (7)

1. a kind of self-lubrication ceramic bearing, it is characterised in that be prepared by the component of following parts by weight：Zirconium oxide 60-68 Part, 27-38 parts of boron nitride, 12-17 parts of diatomite, 7-16 parts of flyash, 10-15 parts of chromium carbide, 5 .7-8 .6 of zinnwaldite Part .4 parts of 2 .5-6 of graphite fibre, 8 .6-11 parts of gallic oxide, 2 .4-7 parts of cellulose ether, 3 .2-7 .4 of iodate Asia europium Part .5 parts of 1 .8-3 of strontium oxide strontia, 7-15 parts of aluminium fluoric acid sodium, 2-9 parts of aluminium borate whisker .9 parts of 1 .2-1 of fluorination niobium, combination oil 150-200 parts；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
2. self-lubrication ceramic bearing according to claim 1, it is characterised in that by the component preparation of following parts by weight ：65 parts of zirconium oxide, 29 parts of boron nitride, 16 parts of diatomite, 10 .6 parts of flyash, 13 .2 parts of chromium carbide, 6 .4 of zinnwaldite Part, 4 .7 parts of graphite fibre, 10 .2 parts of gallic oxide, 5 .6 parts of cellulose ether, 4 .2 parts of iodate Asia europium, 2 .3 of strontium oxide strontia Part, 9 parts of aluminium fluoric acid sodium, 5 parts of aluminium borate whisker, 1 .6 parts of niobium of fluorination, 185 parts of combination oil；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
3. self-lubrication ceramic bearing according to claim 1, it is characterised in that by the component preparation of following parts by weight ：62 parts of zirconium oxide, 32 parts of boron nitride, 15 parts of diatomite, 13 parts of flyash, 12 .4 parts of chromium carbide, 7 .1 parts of zinnwaldite, 5 .2 parts of graphite fibre, 9 .3 parts of gallic oxide, 5 .1 parts of cellulose ether, 6 .7 parts of iodate Asia europium, 2 .2 parts of strontium oxide strontia, aluminium 11 .5 parts of fluoric acid sodium, 7 .2 parts of aluminium borate whisker, 1 .4 parts of niobium of fluorination, 192 parts of combination oil；
The combination oil is 3 by weight by diesel oil, castor oil and lubricating oil:2:2 compositions.
4. such as the preparation method of claims 1 to 3 any one of them self-lubrication ceramic bearing, it is characterised in that the preparation Step is as follows：
（1）By above-mentioned powder zirconium oxide, boron nitride, diatomite, flyash, chromium carbide, zinnwaldite, graphite fibre, three oxidations Two gallium parts, cellulose ether, iodate Asia europium, strontium oxide strontia, aluminium fluoric acid sodium, aluminium borate whisker, fluorination niobium are claimed by the weight Weight, is subsequently placed in batch mixer and mixes 1-3h, spare after mixing；
（2）Above-mentioned uniformly mixed powder is placed in mould, it is compressing under 200-800MPa pressure, density is obtained as 5 .6-7 .3g/cm3Base substrate；
（3）Above-mentioned base substrate is placed in sintering furnace under protective atmosphere and is sintered, its sintering schedule is：It is first pre- at 450-680 DEG C 1-3h is burnt, progress high temperature sintering 1-3h at 1480-1650 DEG C is entered back into, is finally placed in cooled region with 10-20 DEG C/min's Cooling velocity is cooled to room temperature, up to sintered body；
（4）Above-mentioned sintered body is placed in combination oil up to the self-lubrication ceramic bearing after progress vacuum oil immersion processing, it is soaked Oil processing condition is：The .04-0 .1MPa of vacuum -0,70-130 DEG C of oil temperature, immersion oil time 5-24h.
5. the preparation method of self-lubrication ceramic bearing according to claim 4, it is characterised in that the step（2）In The density of the base substrate of compacting is 6 .4g/cm3。
6. the preparation method of self-lubrication ceramic bearing according to claim 4, it is characterised in that the step（3）Middle burning Knot system is：First 2 .5h of pre-burning at 520 DEG C, enters back into progress 1 .5h of high temperature sintering at 1510 DEG C, is finally placed in cooling zone It is cooled to room temperature in domain with the cooling velocity of 13 DEG C/min, up to the sintered body.
7. the preparation method of self-lubrication ceramic bearing according to claim 4, it is characterised in that the step（4）In Immersion oil treatment conditions are：The .06MPa of vacuum -0,96 DEG C of oil temperature, immersion oil time 12h.
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