CN102788090B - Thin-wall long-barrel-shaped bearing containing oil and production method thereof - Google Patents
Thin-wall long-barrel-shaped bearing containing oil and production method thereof Download PDFInfo
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Abstract
The invention discloses a thin-wall long-barrel-shaped bearing containing oil and a production method of the thin-wall long-barrel-shaped bearing containing the oil. The thin-wall long-barrel-shaped bearing containing the oil is characterized in that the bearing is produced from the following components by weight: 28.32-32.43% of CS-100, 49.94-60.16% of SA100, 11.52-17.63% of AG1L3, and zinc stearate, molybdenum disulfide, graphite and dispersion enhancer of which the percentages in the total weight of the three kinds of powder are respectively 0.66%, 0.26%, 0.75% and 0.1%. The thin-wall long-barrel-shaped bearing is prepared by mixing the components, molding, pressing and sintering. The product disclosed by the invention has enough strength, small deformation, small shrinkage, high strength, and good consistence of produced product height and inner hole.
Description
Technical field
The present invention relates to a kind of bearing, the thin long barrel shape oil-impregnated bearing of especially a kind of wall and production method thereof.
Background technique
Along with scientific and technical development, more and more higher to the requirement of copper base oil containing bearing, be mainly manifested in high running speed; Early stage is only 3-5m/s for the online rotating speed of textile manufacturing machine, and now must be more than 10m/s for the copper base oil containing bearing rotating speed of textile manufacturing machine, next is at household electric appliance, especially in sound noon equipment, apply, require oil-impregnated bearing friction factor little, stable working, vibration damping low noise, have the requirement of the being life-span long, General Requirements is more than 5000h again.In order to meet the requirement of people to copper base oil containing bearing high-performance and high-quality, people have carried out a large amount of research work on material selection, although the agglomerated material of copper base oil containing bearing is still Cu-Sn alloy, but increase expensive rare element, as Hitachi, Ltd's exploitation has just increased Ni for many pore types bearing of audio-visual equipment, thereby reduction friction factor, improves bearing working life.The wear resistant copper-based oil-impregnated bearing of one that and for example U.S. develops recently, it is 1-20% containing cobalt amount, and adopts MoS
2with solid lubricants such as Pb.Although the said goods Performance and quality has had raising, price is high, is difficult to promote.At present the factory formula of internal copper base oil containing bearing is generally 99% copper tin 10 and adds 0.5% graphite and add 0.5% zine stearate, mix compressing after, after 650 DEG C ~ 720 DEG C ~ 720 DEG C sintering of excess temperature, the intensity of Ф 0.8*, Ф 1.3*, the type products such as 1.6 is 1.8～2.0kgf, and shrink inconsistent 1.3(-0.01～+ 0.01), be out of shape, have tapering etc., therefore easily there is the phenomenons such as endoporus conformity is poor, tapering in compacted products when finishing.Especially very difficult to producing the thin long barrel shape type of wall oil-impregnated bearing, by the designing requirement of general cylinder type oil-impregnated bearing, wall thickness T >=0.8mm, height with internal diameter than L/d≤2.5, but be to belong to the thin long barrel shape oil-impregnated bearing of wall for models such as Ф 0.8* Ф 1.3*1.6, the thin T=0.25mm of wall, L=2mm, because wall is thin and length, easily there is shrinking inconsistent, distortion, finishing in the time of sintering time, occur that endoporus conformity is bad, easily go out the phenomenon such as noise, electric current height, do not reach client's usage requirement, even cannot produce.Inventor's discovery, above-mentioned shortcoming is because following reason causes:
1, be heated inhomogeneous.2, formula shrinks large and inconsistent.3, powder is filled.4, mixed inhomogeneous the causing of powder.5, most importantly composition of raw materials is unreasonable, and production technology not science causes.After years of research and found that, copper tin 10 mixed powders of different manufacturers with copper tin 10 premix powder because production method, controlling of production process condition are different with processing method, its inherent quality difference is very large, the thin long barrel shape oil-impregnated bearing of the wall that can produce high-quality having, what have cannot produce acceptable product, and stability and the high-performance aspect of the thin long barrel shape oil-impregnated bearing of wall manufacturing condition to quality of product also plays an important role simultaneously.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide that a kind of price is low, performance good, the thin long barrel shape oil-impregnated bearing of the wall of long service life and production method thereof.Object of the present invention realizes by following technical proposals; The present invention is formulated by following component and weight percentage: CS-100 28.32-32.43, CSA100 49.94-60.16, AG1L3 11.52 ~ 17.63, separately add 0.66% weight zine stearate of above-mentioned three kinds of powder gross weights, 0.26% weight molybdenum disulfide, 0.75% weight graphite, 0.1% weight dispersion strengthening agent, above-mentioned each component is suppressed through moulding after mixing, then forms through sintering.
Production of the present invention follows these steps to carry out:
1, import and mix in powder machine through 5 minutes hand mix first above-mentioned each component, mix 55 minutes, place for subsequent use after 24 hours;
2, carry out moulding compacting, the above-mentioned powder mixing is encased in the two-sided press machine of forming equipment dry powder compressing;
3, sintering: the blank suppressing is placed in to sintering furnace and carries out sintering, sintering temperature is 580 DEG C ~ 736 DEG C ~ 725 DEG C three sections, and average every segment distance 570mm, carries out sintering with the guipure speed of 450r/min, and the time is 1.5h;
4, finishing: by the product sintering, pour in vibrating disc, put on material, revise good micro-power elastic clip, die debugging is good after, product is suppressed again;
5, clean: compacting, through examining qualified product, is put in Ultrasonic Cleaners, clean with agent for carbon hydrogen detergent;
6, immersion oil: the product cleaning up is dried, then put in vacuum pump, lid is built, vacuum is opened, and after spending 5 minutes, the import Northeast oil 946P that is heated to 45 DEG C is drawn onto in vacuum pump, after immersion oil 50 minutes, product oil content reaches 19.5% left and right;
7, packaging, warehouse-in.
The present invention is by adding the AG1L3 of 11.52-17.63%, ensure the former grain weight stability of product and the good characteristic of flow velocity, the apparent density of copper tin 10 is generally 2.84g/cc, design density is 6.5g/cc, because pine dress is highly 3.6mm left and right, in the thin high product again of wall, only have flow velocity good and uniformly powder powder could be filled, the quality of product is improved a lot.In the present invention formula, be added with not chemical reaction material and stop the dispersion strengthening agent (it belongs to second-phase enhanced particles) of its heat treatment deformation of some and the copper tin 10 such as the non-shrinking powder CSA-100 of heat treatment and graphite, by undissolved trickle second phase particles is evenly distributed in to the method that makes metal strengthening in metallic matrix.The second phase particles of dispersion strengthening is the insoluble or indissoluble particle adding from outside, even if be at high temperature also not dissolved in matrix, therefore can obtain higher hot strength.After sintering, product is substantially indeformable, external diameter 1.3(+0～+ 0.005); Separately be added with the copper powder CS-100 that contractibility is good, coordinate preferably around junction temperature, product strength (reaching 4.46-4.85kgf), stability (height fluctuation is in 0.02mm, in external diameter shrinking tolerance 0.005mm), working life (than the many uses of existing product 100h) are improved a lot.Because product of the present invention has enough intensity, be out of shape little, shrink little, intensity is high, product height, the endoporus high conformity made, usability might as well can meet client's requirement completely.
Embodiment
Embodiment 1, and product of the present invention is formulated by following raw materials according component and weight percentage:
CS-100 28.32, CSA100 60.16, AG1L3 11.52, separately add 0.66% weight zine stearate of above-mentioned three kinds of powder gross weights, 0.26% weight molybdenum disulfide, 0.75% weight graphite, 0.1% weight dispersion strengthening agent, above-mentioned each component is suppressed through moulding after mixing, then forms through sintering.
CS-100 copper tin 10 is copper tin mixed powders, is that copper 90% and tin 10% mixes, the present embodiment select by Shanghai Ju Lian metallic dust Co., Ltd produce, granularity is 100 orders.
CSA-100 copper tin 10 is copper tin premix powder, is produced by Shanghai Ju Lian metallic dust Co., Ltd, and granularity is 100 orders.
AG1L3 copper tin 10 is copper tin premix powder, is produced by Feitian, Suzhou high-new powder Co., Ltd, and granularity is 150 orders.
Above-mentioned two bronze medal tin 10 premix powder refer to copper 90% and tin 10% melt atomization and the powder of the complete alloyage of making.
Production of the present invention follows these steps to carry out:
1, import and mix in powder machine through 5 minutes hand mix first above-mentioned each component, mix 55 minutes, place for subsequent use after 24 hours;
2, carry out moulding compacting, the above-mentioned powder mixing is encased in the two-sided press machine of forming equipment dry powder compressing, need guarantee that die powder is filled and the height of product is controlled in 0.02mm, for finishing control conformity provides basis;
3, sintering: the blank suppressing is placed in to sintering furnace and carries out sintering, sintering temperature is 580 DEG C～736 DEG C～725 DEG C three sections, average every segment distance 570mm, guipure speed with 450r/min is carried out sintering, approximately guarantee the sintering of product with 1.5h, intensity reaches 4.46-4.85kgf and apparent hardness increases etc., reaches designing requirement;
4, finishing: by the product sintering, pour in vibrating disc, put on material, revise good micro-power elastic clip, after die debugging is good, product is suppressed, according to production technology, product height, interior hole size are debugged, hole degree of being is accomplished AB level, and high consistency will be got well (being controlled in 0.02mm), and endoporus size identical property will be got well and (be controlled by limit in technique, tolerance 0.001mm), can not have tapering phenomenon, because product strength can reach after designing requirement and sintering in semifinished product hole size and shrink high conformity, therefore there will not be product end surface to flatten phenomenon;
5, clean: compacting, through examining qualified product, is put in Ultrasonic Cleaners, clean with agent for carbon hydrogen detergent, guarantee that product appearance and endoporus are clean, can not there is impurity, prevent that product is in the time that client uses, because endoporus has impurity to occur the phenomenon such as noise and poor starting;
6, immersion oil: the product cleaning up is dried, then put in vacuum pump, lid is built, vacuum is opened, and after spending 5 minutes, the import Northeast oil 946P that is heated to 45 DEG C is drawn onto in vacuum pump, after immersion oil 50 minutes, product oil content reaches 19.5% left and right, meets client's usage requirement;
7, packaging, warehouse-in.
Embodiment 2, and product of the present invention is formulated by following raw materials according component and weight percentage:
CS-100 32.43, CSA100 49.94, AG1L3 17.63, separately add 0.66% weight zine stearate of above-mentioned three kinds of powder gross weights, 0.26% weight molybdenum disulfide, 0.75% weight graphite, 0.1% weight dispersion strengthening agent, above-mentioned each component is suppressed through moulding after mixing, then forms through sintering.Production method is with embodiment 1.
Embodiment 3, and product of the present invention is formulated by following raw materials according component and weight percentage:
CS-100 30, CSA100 55.16, AG1L3 14.84, separately add 0.66% weight zine stearate of above-mentioned three kinds of powder gross weights, 0.26% weight molybdenum disulfide, 0.75% weight graphite, 0.1% weight dispersion strengthening agent, above-mentioned each component is suppressed through moulding after mixing, then forms through sintering.Production method is with embodiment 1.
Claims (2)
1. the thin long barrel shape oil-impregnated bearing of wall, it is characterized in that by following component and weight percentage formulated: CS-100 copper tin 10:28.32-32.43, CSA100 copper tin 10:49.94-60.16, AG1L3 copper tin 10:11.52 ~ 17.63, separately add 0.66% zine stearate of above-mentioned three kinds of powder gross weights, 0.26% weight molybdenum disulfide, 0.75% weight graphite, 0.1% weight dispersion strengthening agent, above-mentioned each component is suppressed through moulding after mixing, form through sintering again, wherein CS-100 copper tin 10 is that copper tin mixed powder is that copper 90% and tin 10% mix, granularity is 100 orders, CSA100 copper tin 10 bronze medal tin premix powder, granularity is 100 orders, AG1L3 copper tin 10 premix powder, granularity is 150 orders, above-mentioned two bronze medal tin premix powder refer to the powder of the complete alloyage that copper 90% and tin 10% melt atomization are formed.
2. a production method for the thin long barrel shape oil-impregnated bearing of wall as claimed in claim 1, is characterized in that following these steps to carrying out:
(1) import and mix in powder machine through 5 minutes hand mix first above-mentioned each component, mix 55 minutes, place for subsequent use after 24 hours;
(2) carry out moulding compacting, the above-mentioned powder mixing is encased in the two-sided press machine of forming equipment dry powder compressing;
(3) sintering: the blank suppressing is placed in to sintering furnace and carries out sintering, sintering temperature is 580 DEG C ~ 736 DEG C ~ 725 DEG C three sections, and average every segment distance 570mm, carries out sintering with the guipure speed of 450r/min, and the time is 1.5h;
(4) finishing: by the product sintering, pour in vibrating disc, put on material, revise good micro-power elastic clip, die debugging is good after, product is suppressed again;
(5) clean: compacting, through examining qualified product, is put in Ultrasonic Cleaners, clean with agent for carbon hydrogen detergent;
(6) immersion oil: the product cleaning up is dried, then put in vacuum pump, lid is built, vacuum is opened, and after spending 5 minutes, the import Northeast oil 946P that is heated to 45 DEG C is drawn onto in vacuum pump, after immersion oil 50 minutes, product oil content reaches 19.5% left and right;
(7) packaging, warehouse-in.
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| CN201210306910.3A CN102788090B (en) | 2012-08-27 | 2012-08-27 | Thin-wall long-barrel-shaped bearing containing oil and production method thereof |
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| CN201210306910.3A CN102788090B (en) | 2012-08-27 | 2012-08-27 | Thin-wall long-barrel-shaped bearing containing oil and production method thereof |
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| CN102788090B true CN102788090B (en) | 2014-08-06 |
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| CN103551580B (en) * | 2013-11-04 | 2016-04-13 | 四川省宏锦泰粉末冶金有限公司 | High-strength micro oiliness bearing and production method thereof |
| CN109909495A (en) * | 2019-03-26 | 2019-06-21 | 河南工学院 | Environmentally friendly copper-based composite bearing material of anti-friction wear-resistant and preparation method thereof |
| CN110552962A (en) * | 2019-09-06 | 2019-12-10 | 敖琼瑶 | Fascia gun metal bearing and preparation method thereof |
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| JPS55116681A (en) * | 1979-02-28 | 1980-09-08 | Ngk Insulators Ltd | Ceramic part bonding method |
| JPH0610319B2 (en) * | 1985-12-19 | 1994-02-09 | 本田技研工業株式会社 | Method for producing self-lubricating sintered copper alloy |
| US5370840A (en) * | 1992-11-04 | 1994-12-06 | Olin Corporation | Copper alloy having high strength and high electrical conductivity |
| CN1088114C (en) * | 1999-12-18 | 2002-07-24 | 中国科学院兰州化学物理研究所 | Tin-bronze base self-lubricating composite material |
| CN100567751C (en) * | 2006-05-25 | 2009-12-09 | 孙承玉 | The manufacture method of thin-wall bimetal self-lubricating bearing |
| CN100449163C (en) * | 2007-07-19 | 2009-01-07 | 北京科技大学 | Integral gradient self-lubricating bearing, and fabricating method |
| CN100571935C (en) * | 2008-01-25 | 2009-12-23 | 四川大学 | A kind of preparation method of nano-carbon tube reinforced stephanoporate oil-retaining bearing |
| CN101649858B (en) * | 2009-08-20 | 2011-05-18 | 浙江中达轴承有限公司 | Steel-based copper alloy dual-metal sliding bearing and preparation method thereof |
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Address after: 637000 Building 1, Airport Avenue, Gaoping District, Nanchong City, Sichuan Province Patentee after: Sichuan hongjintai Technology Co.,Ltd. Address before: 637100 Building 1, Airport Avenue, Gaoping District, Nanchong City, Sichuan Province Patentee before: SICHUAN HONGJINTAI POWDER METALLURGY Co.,Ltd. |