CN102788090A - 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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- CN102788090A CN102788090A CN2012103069103A CN201210306910A CN102788090A CN 102788090 A CN102788090 A CN 102788090A CN 2012103069103 A CN2012103069103 A CN 2012103069103A CN 201210306910 A CN201210306910 A CN 201210306910A CN 102788090 A CN102788090 A CN 102788090A
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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, thin long barrel shape oil-impregnated bearing of especially a kind of wall and production method thereof.
Background technique
Along with science and technology development, to the copper base oil containing bearing require increasingly highly, mainly show high running speed; The online rotating speed that is used for textile manufacturing machine in early days is merely 3-5m/s, and secondly the copper base oil containing bearing rotating speed that is used for textile manufacturing machine now must be at household electric appliance more than 10m/s; Especially in sound noon equipment, use; Require the oil-impregnated bearing friction factor little, stable working, vibration damping low noise; Have the requirement of the being life-span long again, fitness for purpose is more than 5000h.In order to satisfy people to copper base oil containing bearing high-performance and high-quality requirement; People have carried out a large amount of research work on material selection; Though the agglomerated material of copper base oil containing bearing is the Cu-Sn alloy still, has increased expensive rare element, the many pore types bearing that is used for audio-visual equipment like Hitachi, Ltd's exploitation has just increased Ni; Thereby the reduction friction factor improves bearing working life.A kind of wear resistant copper-based oil-impregnated bearing developed recently of the U.S. and for example, it contains the cobalt amount is 1-20%, and adopts MoS
2With solid lubricants such as Pb.Though the said goods performance and quality have 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; After mixing compression moulding; Behind 650 ℃ ~ 720 ℃ ~ 720 ℃ sintering of excess temperature; The intensity of Ф 0.8*, Ф 1.3*, type products such as 1.6 is 1.8～2.0kgf, and shrinks inconsistent 1.3 (0.01～+ 0.01), is out of shape, has tapering etc., so phenomenons such as the endoporus conformity is poor, tapering appear in compacted products easily during finishing.Especially to producing very difficulty of the thin long barrel shape type oil-impregnated bearing of wall; By the designing requirement of general cylinder type oil-impregnated bearing, wall thickness T>=0.8mm, height and internal diameter are than L/d≤2.5; But for models such as Ф 0.8* Ф 1.3*1.6 is to belong to the thin long barrel shape oil-impregnated bearing of wall; Wall approaches T=0.25mm, L=2mm, and is thin and long because of wall, occur when when sintering, occurring shrinking inconsistent, distortion, finishing easily the endoporus conformity bad, go out phenomenons such as noise, electric current height easily; Do not reach client's usage requirement, even can't produce.The inventor finds that above-mentioned shortcoming is owing to following reason causes:
1, be heated inhomogeneous.2, prescription shrinks big and inconsistent.3, powder is filled.4, powder mixes inhomogeneous causing.5, most importantly composition of raw materials is unreasonable, and production technology not science causes.Through discovering for many years; Copper tin 10 mixed powders of different manufacturers and copper tin 10 premix powder are owing to production method, controlling of production process condition are different with processing method; Its inherent quality difference is very big; What have can produce the thin long barrel shape oil-impregnated bearing of high-quality wall, and what have can't produce acceptable product, and the thin long barrel shape oil-impregnated bearing manufacturing condition of wall also plays an important role to the stability and the high-performance aspect of quality of product simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing technology, 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.The object of the invention is realized through following technical proposals; The present invention is formulated by following component and weight percentage: CS-100 28.32-32.43, and CSA100 49.94-60.16, AG1L3 11.52 ~ 17.63; Other adds 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 mixed after the moulding compacting forms through sintering again.
Production of the present invention follows these steps to carry out:
1, with 5 minutes hand mix of above-mentioned each component elder generation warp, imports and mix in the powder machine, mixed 55 minutes, place subsequent use after 24 hours;
2, carry out the moulding compacting, the above-mentioned powder that mixes is encased in compression moulding in the two-sided press machine of forming equipment dry powder;
3, sintering: place sintering furnace to carry out sintering the blank that suppresses, sintering temperature is 580 ℃ ~ 736 ℃ ~ 725 ℃ 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: with the product that sinters, pour in the vibrating disc, put on material, revise good little power elastic clip, die debugging good after, product is suppressed again;
5, clean: will suppress through the qualified product of inspection, and put in the Ultrasonic Cleaners, and clean with agent for carbon hydrogen detergent;
6, immersion oil: the product that cleans up is dried, put into then in the vacuum pump, lid is built; Vacuum is opened, and after 5 minutes, the import Northeast oil 946P that is heated to 45 ℃ is drawn onto in the vacuum pump excessively; Behind the immersion oil 50 minutes, the product oil content reaches about 19.5%;
7, packing, warehouse-in.
The present invention is through adding the AG1L3 of 11.52-17.63%; Guarantee 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, and design density is 6.5g/cc, because of the pine dress highly is about 3.6mm; In the thin high again product of wall, have only the good and uniform powder of flow velocity could powder be filled, the quality of product is improved a lot.Be added with in the present invention prescription the non-shrinking powder CSA-100 of heat treatment and graphite etc. some with copper tin 10 chemical reaction material and stop the dispersion strengthening agent (its belong to second enhanced particles) mutually of its heat treatment deformation not, through the undissolved trickle second phase particle is evenly distributed in the method that makes metal strengthening in the metallic matrix.The second phase particle of dispersion strengthening is the insoluble or indissoluble particle that adds from the outside, even at high temperature also be not dissolved in the matrix, so can obtain higher hot strength.Product is indeformable basically behind the sintering, external diameter 1.3 (+0～+ 0.005); Other is added with the good copper powder CS-100 of contractibility; Cooperate preferably around junction temperature; Product strength (reaching 4.46-4.85kgf), stability (height fluctuation in 0.02mm, external diameter shrinking tolerance 0.005mm in), working life (use 100h than existing product) are improved a lot more.Because of 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 satisfy requirement of client fully.
Embodiment
Embodiment 1, and product of the present invention is formulated by following raw materials according component and weight percentage:
CS-100 28.32, and CSA100 60.16, and AG1L3 11.52; Other adds 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 mix after the moulding compacting forms through sintering again.
CS-100 copper tin 10 is copper tin mixed powders, be that copper 90% mixes with tin 10%, and present embodiment is selected for use by the huge metallic dust in Shanghai Co., Ltd and produced, and granularity is 100 orders.
CSA-100 copper tin 10 is copper tin premix powder, is produced by the huge metallic dust in Shanghai Co., Ltd, and granularity is 100 orders.
AG1L3 copper tin 10 is copper tin premix powder, is produced by the high-new powder in Feitian, Suzhou Co., Ltd, and granularity is 150 orders.
Above-mentioned two bronze medal tin, 10 premix powder are meant the powder of the complete alloyage that copper 90% is processed with the atomizing of tin 10% melt.
Production of the present invention follows these steps to carry out:
1, with 5 minutes hand mix of above-mentioned each component elder generation warp, imports and mix in the powder machine, mixed 55 minutes, place subsequent use after 24 hours;
2, carry out the moulding compacting, the above-mentioned powder that mixes is encased in compression moulding in the two-sided press machine of forming equipment dry powder, need guarantee that the die powder is filled and the height of product is controlled in the 0.02mm, for finishing control conformity provides the basis;
3, sintering: place sintering furnace to carry out sintering the blank that suppresses; Sintering temperature is 580 ℃～736 ℃～725 ℃ three sections; Average every segment distance 570mm carries out sintering with the guipure speed of 450r/min, approximately guarantees the sintering of product with 1.5h; Intensity reaches 4.46-4.85kgf and apparent hardness increases etc., reaches designing requirement;
4, finishing: with the product that sinters, pour in the vibrating disc, put on material; Revise good little power elastic clip, die debugging good after, product is suppressed; According to production technology product height, interior hole size are debugged, hole degree of being is accomplished the AB level, and the height conformity will be got well (being controlled in the 0.02mm); The endoporus size identical property will be got well (by limit control in the technology, tolerance 0.001mm), can not have the tapering phenomenon; Because of product strength can reach behind designing requirement and the sintering in the semifinished product hole size and shrink high conformity, so product end surface pressing phenomenon can not occur;
5, clean: will suppress through the qualified product of inspection, and put in the Ultrasonic Cleaners, and clean with agent for carbon hydrogen detergent; Guarantee that product appearance and endoporus are clean; Impurity can not be arranged, prevent product when the client uses, because endoporus has impurity phenomenons such as noise and poor starting to occur;
6, immersion oil: the product that cleans up is dried, put into then in the vacuum pump, lid is built; Vacuum is opened, and after 5 minutes, the import Northeast oil 946P that is heated to 45 ℃ is drawn onto in the vacuum pump excessively; Behind the immersion oil 50 minutes, the product oil content reaches about 19.5%, meets client's usage requirement;
7, packing, 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, and CSA100 49.94, and AG1L3 17.63; Other adds 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 mix after the moulding compacting forms through sintering again.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, and CSA100 55.16, and AG1L3 14.84; Other adds 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 mix after the moulding compacting forms through sintering again.Production method is with embodiment 1.
Claims (2)
1. the thin long barrel shape oil-impregnated bearing of wall is characterized in that by following component and weight percentage formulated: CS-100 28.32-32.43, CSA100 49.94-60.16; AG1L3 11.52 ~ 17.63, and other adds 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 mix after the moulding compacting forms through sintering again.
2. the production method of the thin long barrel shape oil-impregnated bearing of a wall is characterized in that following these steps to carrying out:
(1) with 5 minutes hand mix of above-mentioned each component elder generation warp, imports and mix in the powder machine, mixed 55 minutes, place subsequent use after 24 hours;
(2) carry out the moulding compacting, the above-mentioned powder that mixes is encased in compression moulding in the two-sided press machine of forming equipment dry powder;
(3) sintering: place sintering furnace to carry out sintering the blank that suppresses, sintering temperature is 580 ℃ ~ 736 ℃ ~ 725 ℃ 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: with the product that sinters, pour in the vibrating disc, put on material, revise good little power elastic clip, die debugging good after, product is suppressed again;
(5) clean: will suppress through the qualified product of inspection, and put in the Ultrasonic Cleaners, and clean with agent for carbon hydrogen detergent;
(6) immersion oil: the product that cleans up is dried, put into then in the vacuum pump, lid is built; Vacuum is opened, and after 5 minutes, the import Northeast oil 946P that is heated to 45 ℃ is drawn onto in the vacuum pump excessively; Behind the immersion oil 50 minutes, the product oil content reaches about 19.5%;
(7) packing, warehouse-in.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103551580A (en) * | 2013-11-04 | 2014-02-05 | 四川省宏锦泰粉末冶金有限公司 | High-strength micro oil-contained 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551580A (en) * | 2013-11-04 | 2014-02-05 | 四川省宏锦泰粉末冶金有限公司 | High-strength micro oil-contained bearing and production method thereof |
| 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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