CN102996638A - Ceramimetallurgical oil-free lubrication bearing - Google Patents
Ceramimetallurgical oil-free lubrication bearing Download PDFInfo
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- CN102996638A CN102996638A CN2012104931520A CN201210493152A CN102996638A CN 102996638 A CN102996638 A CN 102996638A CN 2012104931520 A CN2012104931520 A CN 2012104931520A CN 201210493152 A CN201210493152 A CN 201210493152A CN 102996638 A CN102996638 A CN 102996638A
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- dysprosium
- oil
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- iron
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- Sliding-Contact Bearings (AREA)
Abstract
The invention relates to a ceramimetallurgical oil-free lubrication bearing. Powder material comprises the following ingredients by weight percent: 0.5-1.5% of graphite, 0.4-0.5% of molybdenum disulfide, 0.5-1% of copper, 0.01-0.03% of boron, 0.001-0.003% of dysprosium, 0.3-0.5% of zinc stearate and the balance of iron, wherein the dysprosium is added in a manner of containing 15% of dysprosium-iron alloy.
Description
Technical field
The invention belongs to field of bearings, refer to especially a kind of Nonlubricated bearing of powder metallurgy.
Background technique
Present sintered metal powder bearing technology, mainly being by operations such as batch mixing, moulding, sintering shaping, double sintering, heat treatment, fine finishing, immersion oil, is a kind of oil-impregnated bearing, for oil lubrication is arranged, that is to say in the using process afterwards, need to regularly add lubricant oil.And in some low speed, the less demanding parts of load, can realize oil-free lubrication in conjunction with the characteristic of oil-free lubrication fully.But existing field of powder metallurgy also can't realize this technology.
Also have recently technology to propose a kind of oil-free lubrication mode for powder metallurgy and make bearing, it mainly is to add graphite, molybdenum disulfide, copper and machine oil composition in iron powder.But its final products still belong to the oil lubrication technology is arranged, can't realize the oil-free lubrication technology fully.
Summary of the invention
The Nonlubricated bearing that the purpose of this invention is to provide a kind of powder metallurgy by the technical program, can be realized in use not needing charging-up lubricant oil just can keep enough friction factor fully.
The present invention is achieved by the following technical solutions:
A kind of Nonlubricated bearing of powder metallurgy, its dusty material forms and comprises by weight percentage the dysprosium of the copper of the graphite of 0.5-1.5%, the molybdenum disulfide of 0.4-0.5%, 0.5-1%, the boron of 0.01-0.03%, 0.001-0.003%, the zine stearate of 0.3-0.5% and the iron of surplus; Wherein dysprosium is that the mode that contains the Dy-Fe alloy of dysprosium 15% adds.
Described preparation method is:
Batch mixing mixes the material of determining prescription, and then grinds into the powder that grain diameter on average is no more than 100 microns, and preferably grain diameter on average is no more than the powder of 10-20 micron;
Compacting, the mode that adopts one or many to fill, the pressure with 600-750MPa in mould is suppressed 10-60 moulding second;
Sintering, at first under 600-800 ℃ of temperature presintering 1-2 hour, and then mould is interior with shaping under the 150-200MPa pressure, again in 1100-1250 ℃ of lower sintering and be incubated 1-3 hour, then divide the two-stage cooling, the cooling rate of phase I remains on 2.5-3.5 ℃/minute, and tempering is 1-3 hour when drop in temperature arrives 400-450 ℃, immerses oil temperature oil immersion in 110-130 ℃ deep fat when then naturally cooling to 200 ± 20 ℃.
The beneficial effect that the present invention compares with prior art is:
In the technical program, by in powder, adding graphite, zine stearate, molybdenum disulfide to guarantee indeformable under high temperature, high pressure, the few friction of bearing and lubrication effect.
By wanting to add boron in the powder, guarantee hardness and the smoothness of bearing surface, can reduce the friction factor when being lower than 100 ℃.
By in powder, adding the dysprosium element, utilize dysprosium lubrication effect at high temperature, to guarantee bearing in use, when the greasy property that bearing occurs to guarantee under the high-temperature condition, to guarantee the safety of bearing.
By the technical program, the hardness of bearing surface on average can reach 281-342HB, and temperature is at 300 ℃, and the friction factor after 8 hours is still less than 0.15.
Embodiment
Below come by specific embodiment that the present invention is described in detail, should be understood that these embodiments only can be used for explaining the present invention and can not be used for explaining is limitation of the present invention.
A kind of Nonlubricated bearing of powder metallurgy, its dusty material forms and comprises by weight percentage the dysprosium of the copper of the graphite of 0.5-1.5%, the molybdenum disulfide of 0.4-0.5%, 0.5-1%, the boron of 0.01-0.03%, 0.001-0.003%, the zine stearate of 0.3-0.5% and the iron of surplus; Wherein dysprosium is that the mode that contains the Dy-Fe alloy of dysprosium 15% adds.
Described preparation method is:
Batch mixing mixes the material of determining prescription, and then grinds into the powder that grain diameter on average is no more than 100 microns, and preferably grain diameter on average is no more than the powder of 10-20 micron;
Compacting, the mode that adopts one or many to fill, the pressure with 600-750MPa in mould is suppressed 10-60 moulding second;
Sintering, at first under 600-800 ℃ of temperature presintering 1-2 hour, and then mould is interior with shaping under the 150-200MPa pressure, again in 1100-1250 ℃ of lower sintering and be incubated 1-3 hour, then divide the two-stage cooling, the cooling rate of phase I remains on 2.5-3.5 ℃/minute, and tempering is 1-3 hour when drop in temperature arrives 400-450 ℃, immerses oil temperature oil immersion in 110-130 ℃ deep fat when then naturally cooling to 200 ± 20 ℃.
Embodiment 1
A kind of Nonlubricated bearing of powder metallurgy, its dusty material forms and comprises by weight percentage, 0.5% graphite, 0.4% molybdenum disulfide, 0.5% copper, 0.01% boron, 0.001% dysprosium, 0.3% zine stearate and the iron of surplus; Wherein dysprosium is that the mode that contains the Dy-Fe alloy of dysprosium 15% adds.
Embodiment 2
A kind of Nonlubricated bearing of powder metallurgy, its dusty material forms and comprises by weight percentage, 1.5% graphite, 0.5% molybdenum disulfide, 1% copper, 0.03% boron, 0.003% dysprosium, 0.5% zine stearate and the iron of surplus; Wherein dysprosium is that the mode that contains the Dy-Fe alloy of dysprosium 15% adds.
Embodiment 3
A kind of Nonlubricated bearing of powder metallurgy, its dusty material forms and comprises by weight percentage, 1.0% graphite, 0.4% molybdenum disulfide, 0.8% copper, 0.02% boron, 0.002% dysprosium, 0.4% zine stearate and the iron of surplus; Wherein dysprosium is that the mode that contains the Dy-Fe alloy of dysprosium 15% adds.
Embodiment 4
A kind of Nonlubricated bearing of powder metallurgy, its dusty material forms and comprises by weight percentage, 1.2% graphite, 0.5% molybdenum disulfide, 0.5% copper, 0.03% boron, 0.002% dysprosium, 0.3% zine stearate and the iron of surplus; Wherein dysprosium is that the mode that contains the Dy-Fe alloy of dysprosium 15% adds.
Claims (1)
1. the Nonlubricated bearing of a powder metallurgy, it is characterized in that: its dusty material forms and comprises by weight percentage the dysprosium of the copper of the graphite of 0.5-1.5%, the molybdenum disulfide of 0.4-0.5%, 0.5-1%, the boron of 0.01-0.03%, 0.001-0.003%, the zine stearate of 0.3-0.5% and the iron of surplus; Wherein dysprosium is that the mode that contains the Dy-Fe alloy of dysprosium 15% adds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104931520A CN102996638A (en) | 2012-11-22 | 2012-11-22 | Ceramimetallurgical oil-free lubrication bearing |
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| CN2012104931520A CN102996638A (en) | 2012-11-22 | 2012-11-22 | Ceramimetallurgical oil-free lubrication bearing |
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| CN102996638A true CN102996638A (en) | 2013-03-27 |
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| CN2012104931520A Pending CN102996638A (en) | 2012-11-22 | 2012-11-22 | Ceramimetallurgical oil-free lubrication bearing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086687A (en) * | 2016-08-27 | 2016-11-09 | 宁波市鄞州新华仪表电机配件厂 | The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low |
| CN106077627A (en) * | 2016-08-27 | 2016-11-09 | 宁波市鄞州新华仪表电机配件厂 | A kind of preparation method of sliding bearing |
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| US5892164A (en) * | 1997-03-19 | 1999-04-06 | Air Products And Chemicals, Inc. | Carbon steel powders and method of manufacturing powder metal components therefrom |
| CN1313911A (en) * | 1998-07-29 | 2001-09-19 | 米巴·格来特来格股份公司 | Intermediate layer, notably binding layer, made of an alloy on aluminium basis |
| CN1851280A (en) * | 2006-05-28 | 2006-10-25 | 揭朝奎 | Weldable sintered metal powder bearing, and its production process |
| CN101573543A (en) * | 2006-11-20 | 2009-11-04 | 斗山英维高株式会社 | Bearing having improved consume resistivity and manufacturing method thereof |
| CN101775521A (en) * | 2010-03-16 | 2010-07-14 | 海安县鹰球集团有限公司 | Ultrahigh rotating speed oil bearing for powder metallurgy and manufacturing method thereof |
| WO2012002869A1 (en) * | 2010-07-02 | 2012-01-05 | Aktiebolaget Skf | Flash-butt welded bearing component |
| CN102994879A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Ceramimetallurgical oil-free lubrication bearing and manufacturing method thereof |
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2012
- 2012-11-22 CN CN2012104931520A patent/CN102996638A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5892164A (en) * | 1997-03-19 | 1999-04-06 | Air Products And Chemicals, Inc. | Carbon steel powders and method of manufacturing powder metal components therefrom |
| CN1313911A (en) * | 1998-07-29 | 2001-09-19 | 米巴·格来特来格股份公司 | Intermediate layer, notably binding layer, made of an alloy on aluminium basis |
| CN1851280A (en) * | 2006-05-28 | 2006-10-25 | 揭朝奎 | Weldable sintered metal powder bearing, and its production process |
| CN101573543A (en) * | 2006-11-20 | 2009-11-04 | 斗山英维高株式会社 | Bearing having improved consume resistivity and manufacturing method thereof |
| CN101775521A (en) * | 2010-03-16 | 2010-07-14 | 海安县鹰球集团有限公司 | Ultrahigh rotating speed oil bearing for powder metallurgy and manufacturing method thereof |
| WO2012002869A1 (en) * | 2010-07-02 | 2012-01-05 | Aktiebolaget Skf | Flash-butt welded bearing component |
| CN102994879A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Ceramimetallurgical oil-free lubrication bearing and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086687A (en) * | 2016-08-27 | 2016-11-09 | 宁波市鄞州新华仪表电机配件厂 | The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low |
| CN106077627A (en) * | 2016-08-27 | 2016-11-09 | 宁波市鄞州新华仪表电机配件厂 | A kind of preparation method of sliding bearing |
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Application publication date: 20130327 |