CN104879385A - Coating containing molybdenum disulfide and process applying coating on bearing bush spraying - Google Patents
Coating containing molybdenum disulfide and process applying coating on bearing bush spraying Download PDFInfo
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- CN104879385A CN104879385A CN201510308041.1A CN201510308041A CN104879385A CN 104879385 A CN104879385 A CN 104879385A CN 201510308041 A CN201510308041 A CN 201510308041A CN 104879385 A CN104879385 A CN 104879385A
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Abstract
The invention discloses a coating containing molybdenum disulfide and a process applying the coating on bearing bush spraying. The coating comprises the following material components in parts by weight: 3 percent of polytetrafluoroethylene, 8 percent of molybdenum disulfide, 2 percent of iron sesquioxide, 4 percent of silicon carbide ceramics, 4 percent of graphite, 0.2 percent of zinc powder, 35 percent of epoxy resin, and the balance of dimethylacetamide. The process disclosed by the invention comprises the following steps of cleaning and polishing, primary drying, primary ultrasonic deoiling, secondary drying, secondary ultrasonic deoiling, thrice drying, sand blasting, primary spraying, secondary spraying, heating, solidifying, checking and sub-packaging. According to the coating containing the molybdenum disulfide and the process applying the coating on bearing bush spraying provided by the invention, through the combination of the coating materials and the spraying process, the adhesiveness of the coating and bearing alloy is obviously improved, the uniformity of the coating is better, the coating is not easy to fall off, and the product percent of pass is high.
Description
Technical field
The invention belongs to bearing shell manufacture field, be specifically related to a kind of containing molybdenum disulfide coating and the technique being applied to bearing shell spraying thereof.
Background technique
The structure of tradition bearing shell steel back layer adheres to an alloy-layer, and alloy-layer adds the soft anti-attrition layer of one deck by the mode of plating or sputter.The main purpose of this anti-attrition layer is compliance, mosaicism, wear resistance in order to increase inner surface of bearing bush.But along with constantly riseing of engine power, bearing shell is faced with more and more severe working environment, and traditional bearing shell often occurs that alloy-layer peels off the phenomenon with plating exfoliation, causes the situation of motor tile kilning.And electroplate anti-attrition layer mode and belong to high pollution processing mode, and sputtering way is very high to the requirement of equipment, increase cost of production.
In recent years, each bearing shell producer progressively adopts spraying coating process to substitute anti-attrition layer in bearing shell surface formation coating becomes a kind of emerging trend, in such a process, molybdenum disulfide becomes irreplaceable first-selection in cladding material component as solid lubricant, certainly, the final performance of bearing shell and the proportioning of molybdenum disulfide have close ties with the interpolation of other matching components.Through retrieval, application number CN201210498063.5 patent discloses a kind of method preparing solid lubricant coating on copper standard shaft watt, disclose coating material therefor component and proportioning more in detail in this patent application, publication number CN 101629601B patent provides a kind of high molecular abrasion-proof bearing bush in addition, relate to the metal bush high molecular abrasion-proof layer be made up of polyamidoimide complex polyester and molybdenum disulfide, the working life of bearing shell is increased, these two patent of invention all lay particular emphasis on formula Design and the preparation of bearing shell metal layer, and innovation is preferably lacked for spraying coating process.For spraying coating process, claimant retrieves application number No. 201310061734.1 alloy-free floor bearing shell spraying molybdenum disulfide techniques, molybdenum disulfide is solidificated in bearing shell matrix surface by the dependence cohesive material that this technique is stronger, but this mode can not solve the problem of coating shedding preferably.
Claimant finds when producing, in conjunction with rational production technology, can obtain when saving coating cost and same or more excellent possess compliance, mosaicism, wear resistance bearing shell, and coating and bearing shell matrix can be made to obtain stronger Adhesion force, coating difficult drop-off, bearing shell has higher conforming product rate and longer working life.
Summary of the invention
The invention provides a kind of containing molybdenum disulfide coating and the technique being applied to bearing shell spraying thereof, in maintenance or possess on the basis of more excellent compliance, mosaicism, wear resistance usage requirement, bearing shell coating can be solved and easily come off and the higher technical problem of coating cost of production.
The technological scheme that the present invention takes is:
A kind of containing molybdenum disulfide coating and the technique being applied to bearing shell spraying thereof, the material component of described coating counts polytetrafluoroethylene 3% by weight, molybdenum disulfide 8%, ferric oxide 2%, silicon carbide ceramics 4%, graphite 4%, zinc powder 0.2%, epoxy resin 35%, surplus are dimethylacetylamide, by described polytetrafluoroethylene, molybdenum disulfide, silicon carbide ceramics, graphite, grind to form 1-2um powder particle, zinc powder and ferric oxide are ground to 4-5um powder particle, then add epoxy resin and dimethylacetylamide and mix and make;
Containing the technique that molybdenum disulfide coatings applications sprays in bearing shell, comprise the following steps:
A, cleaning polishing: bearing shell matrix is positioned in vibrating finishing machine and carries out cleaning polishing;
B, first drying: bearing shell matrix is positioned in vacuum dryer and dries, temperature controls 220 DEG C ± 5 DEG C, time controling 50-60 minute;
C, a ultrasound deoil: Ultrasonic Cleaning cleaning solution operating temperature control 35-40 DEG C, Ultrasonic Cleaning operating current control 4-5A, Ultrasonic Cleaning oil removing time controling 50-60min;
D, secondary drying: bearing shell matrix is positioned in vacuum dryer and dries, temperature controls 220 DEG C ± 5 DEG C, time controling 50-60 minute;
E, twice ultrasonic ripple deoil; Ultrasonic Cleaning cleaning solution operating temperature control 35-40 DEG C, Ultrasonic Cleaning operating current control 4-5A, Ultrasonic Cleaning oil removing time controling 50-60min;
F, three oven dry: bake out temperature controls 180 DEG C ± 5 DEG C, drying time control 50-60 minute;
G, sandblasting: adopt sandblasting machine and air compressor to carry out sand blast to bearing shell matrix, air compressor pressure control 0.72-0.82MPa, blasting pressure control 0.4-0.45MPa, blast time controls to be not less than 60min, and 30 order black fused aluminas selected by the abrasive material that sandblasts;
H, once spraying: bearing shell latch inclined-plane is upwards divided on plastics magnetic sheet, spray gun is surperficial in bearing shell by claim 1 gained coating spraying, the direction that spray gun runs is parallel with coated article face all the time, spray gun motion speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters drying oven together with plastics magnetic sheet and dries 45 ~ 50 minutes at 135 DEG C
I, secondary spray: bearing shell latch inclined-plane is divided downwards on plastics magnetic sheet, spray gun is surperficial in bearing shell by claim 1 gained coating spraying, the direction that spray gun runs is parallel with coated article face all the time, spray gun motion speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters drying oven together with plastics magnetic sheet and dries 45 ~ 50 minutes at 135 DEG C
J, to be heating and curing: put into by product on solidification frame and enter drying oven solidification, temperature controls 180 DEG C ± 5 DEG C, time controling 60 minutes;
K, inspection packing.
In cladding material component, polytetrafluoroethylene and molybdenum disulfide have good lubricity, this can ensure the fatigue resistance of bearing shell, and silicon carbide ceramics and graphite with the use of making friction factor greatly reduce, effective raising bearing shell wear-resisting property, silicon carbide ceramics simultaneously, graphite and zinc particle form rigid support, thoroughly stop the alloy face of bearing shell and the direct friction of bent axle, the friction becoming bent axle and bearing alloy face is the friction between cladding material molecule, ferric oxide original idea is added as polishing agent and resin layer, but due to the color attribute of himself, obtain red surface unexpectedly making finished product rear axle watt, there is extremely strong identification.
This spraying coating process and other spraying coating process are significantly distinguished and are two aspects: 1, this technique has the strict processing requirements that deoils to bearing shell matrix surface, go through twice ultrasound to deoil and after drying, bearing shell matrix surface remains without any oil stain, the surface of smooth pieces makes can not produce any gap between bearing shell matrix and coating, 2, sandblasting, sand blast is done at smooth bearing shell matrix surface, this surface is made to form roughness, hard particles in coating can well be attached on roughened surface, the bearing shell that its surface evenness is produced than other usual manners is more excellent, this point is especially obvious under metallograph contrast.Above-mentioned two aspects can improve the degree of adhesion of coating and bearing shell matrix greatly, make bearing shell production up-to-standard rate significantly promote and increase the service life.
Table 1 is in order to illustrate that product of the present invention and like product Performance Detection contrast
Detection facility: MM-U10A end face frictional wear tester, detection load: 1600N, 60 minutes time, acquired results is as follows
| Experimental subjects | Conventional sputtered layer material | Cladding material of the present invention |
| Friction factor | 0.085 | 0.04 |
| Wear extent | 0.3μm | 0.02μm |
Table 1
Accompanying drawing explanation
Fig. 1 is that bearing shell coating of the present invention observes surface evenness situation under metallurgical microscope.
Fig. 2 is the surface evenness situation that traditional sputtered layer material is observed under metallurgical microscope.
Embodiment
A kind of containing molybdenum disulfide coating and the technique being applied to bearing shell spraying thereof, the material component of described coating counts polytetrafluoroethylene 3% by weight, molybdenum disulfide 8%, ferric oxide 2%, silicon carbide ceramics 4%, graphite 4%, zinc powder 0.2%, epoxy resin 35%, surplus are dimethylacetylamide, by described polytetrafluoroethylene, molybdenum disulfide, silicon carbide ceramics, graphite, grind to form 1-2um powder particle, zinc powder and ferric oxide are ground to 4-5um powder particle, then add epoxy resin and dimethylacetylamide and mix and make.
Containing the technique that molybdenum disulfide coatings applications sprays in bearing shell, comprise the following steps:
A, cleaning polishing: bearing shell matrix is positioned in vibrating finishing machine and carries out cleaning polishing;
B, first drying: bearing shell matrix is positioned in vacuum dryer and dries, temperature controls 220 DEG C ± 5 DEG C, time controling 50-60 minute;
C, a ultrasound deoil: Ultrasonic Cleaning cleaning solution operating temperature control 35-40 DEG C, Ultrasonic Cleaning operating current control 4-5A, Ultrasonic Cleaning oil removing time controling 50-60min;
D, secondary drying: bearing shell matrix is positioned in vacuum dryer and dries, temperature controls 220 DEG C ± 5 DEG C, time controling 50-60 minute;
E, twice ultrasonic ripple deoil; Ultrasonic Cleaning cleaning solution operating temperature control 35-40 DEG C, Ultrasonic Cleaning operating current control 4-5A, Ultrasonic Cleaning oil removing time controling 50-60min;
F, three oven dry: bake out temperature controls 180 DEG C ± 5 DEG C, drying time control 50-60 minute;
G, sandblasting: adopt sandblasting machine and air compressor to carry out sand blast to bearing shell matrix, air compressor pressure control 0.72-0.82MPa, blasting pressure control 0.4-0.45MPa, blast time controls to be not less than 60min, and 30 order black fused aluminas selected by the abrasive material that sandblasts;
H, once spraying: bearing shell latch inclined-plane is upwards divided on plastics magnetic sheet, spray gun is surperficial in bearing shell by claim 1 gained coating spraying, the direction that spray gun runs is parallel with coated article face all the time, spray gun motion speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters drying oven together with plastics magnetic sheet and dries 45 ~ 50 minutes at 135 DEG C
I, secondary spray: bearing shell latch inclined-plane is divided downwards on plastics magnetic sheet, spray gun is surperficial in bearing shell by claim 1 gained coating spraying, the direction that spray gun runs is parallel with coated article face all the time, spray gun motion speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters drying oven together with plastics magnetic sheet and dries 45 ~ 50 minutes at 135 DEG C;
J, to be heating and curing: put into by product on solidification frame and enter drying oven solidification, temperature controls 180 DEG C ± 5 DEG C, time controling 60 minutes;
K, inspection packing.
Claims (2)
1. the technique containing molybdenum disulfide coating and be applied to bearing shell spraying, it is characterized in that: the material component of described coating counts polytetrafluoroethylene 3% by weight, molybdenum disulfide 8%, ferric oxide 2%, silicon carbide ceramics 4%, graphite 4%, zinc powder 0.2%, epoxy resin 35%, surplus are dimethylacetylamide, by described polytetrafluoroethylene, molybdenum disulfide, silicon carbide ceramics, graphite, grind to form 1-2um powder particle, zinc powder and ferric oxide are ground to 4-5um powder particle, then add epoxy resin and dimethylacetylamide and mix and make.
2., containing the technique that molybdenum disulfide coatings applications sprays in bearing shell, it is characterized in that: comprise the following steps:
A, cleaning polishing: bearing shell matrix is positioned in vibrating finishing machine and carries out cleaning polishing;
B, first drying: bearing shell matrix is positioned in vacuum dryer and dries, temperature controls 220 DEG C ± 5 DEG C, time controling 50-60 minute;
C, a ultrasound deoil: Ultrasonic Cleaning cleaning solution operating temperature control 35-40 DEG C, Ultrasonic Cleaning operating current control 4-5A, Ultrasonic Cleaning oil removing time controling 50-60min;
D, secondary drying: bearing shell matrix is positioned in vacuum dryer and dries, temperature controls 220 DEG C ± 5 DEG C, time controling 50-60 minute;
E, twice ultrasonic ripple deoil; Ultrasonic Cleaning cleaning solution operating temperature control 35-40 DEG C, Ultrasonic Cleaning operating current control 4-5A, Ultrasonic Cleaning oil removing time controling 50-60min;
F, three oven dry: bake out temperature controls 180 DEG C ± 5 DEG C, drying time control 50-60 minute;
G, sandblasting: adopt sandblasting machine and air compressor to carry out sand blast to bearing shell matrix, air compressor pressure control 0.72-0.82MPa, blasting pressure control 0.4-0.45MPa, blast time controls to be not less than 60min, and 30 order black fused aluminas selected by the abrasive material that sandblasts;
H, once spraying: bearing shell latch inclined-plane is upwards divided on plastics magnetic sheet, spray gun is surperficial in bearing shell by claim 1 gained coating spraying, the direction that spray gun runs is parallel with coated article face all the time, spray gun motion speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters drying oven together with plastics magnetic sheet and dries 45 ~ 50 minutes at 135 DEG C
I, secondary spray: bearing shell latch inclined-plane is divided downwards on plastics magnetic sheet, spray gun is surperficial in bearing shell by claim 1 gained coating spraying, the direction that spray gun runs is parallel with coated article face all the time, spray gun motion speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters drying oven together with plastics magnetic sheet and dries 45 ~ 50 minutes at 135 DEG C;
J, to be heating and curing: put into by product on solidification frame and enter drying oven solidification, temperature controls 180 DEG C ± 5 DEG C, time controling 60 minutes;
K, inspection packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510308041.1A CN104879385B (en) | 2015-06-08 | 2015-06-08 | A kind of spraying coating process of the coating of bearing shell containing molybdenum disulfide |
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| CN201510308041.1A CN104879385B (en) | 2015-06-08 | 2015-06-08 | A kind of spraying coating process of the coating of bearing shell containing molybdenum disulfide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881256A (en) * | 2017-03-14 | 2017-06-23 | 蚌埠奥特压缩机有限公司 | A kind of oil-free lubrication method of bearing liner for compressor |
| CN108686902A (en) * | 2018-05-08 | 2018-10-23 | 苏州耐思特塑胶有限公司 | A kind of auto parts machinery spray technology |
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| JPH06122840A (en) * | 1992-10-13 | 1994-05-06 | Nippon Telegr & Teleph Corp <Ntt> | Water-repellent powder paint and its coating method |
| US6440580B1 (en) * | 1998-12-01 | 2002-08-27 | Ppg Industries Ohio, Inc. | Weldable, coated metal substrates and methods for preparing and inhibiting corrosion of the same |
| CN102606659A (en) * | 2011-12-15 | 2012-07-25 | 广东工业大学 | Steel backing/polymer composite material lining bearing bush and preparation method |
| CN103849311A (en) * | 2012-11-29 | 2014-06-11 | 中国科学院兰州化学物理研究所 | Method for preparing solid lubricant coating on copper base bearing bush |
| CN104120001A (en) * | 2014-08-07 | 2014-10-29 | 福建省将乐三华轴瓦股份有限公司 | Lubricant and use thereof |
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2015
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| JPH06122840A (en) * | 1992-10-13 | 1994-05-06 | Nippon Telegr & Teleph Corp <Ntt> | Water-repellent powder paint and its coating method |
| US6440580B1 (en) * | 1998-12-01 | 2002-08-27 | Ppg Industries Ohio, Inc. | Weldable, coated metal substrates and methods for preparing and inhibiting corrosion of the same |
| CN102606659A (en) * | 2011-12-15 | 2012-07-25 | 广东工业大学 | Steel backing/polymer composite material lining bearing bush and preparation method |
| CN103849311A (en) * | 2012-11-29 | 2014-06-11 | 中国科学院兰州化学物理研究所 | Method for preparing solid lubricant coating on copper base bearing bush |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881256A (en) * | 2017-03-14 | 2017-06-23 | 蚌埠奥特压缩机有限公司 | A kind of oil-free lubrication method of bearing liner for compressor |
| CN108686902A (en) * | 2018-05-08 | 2018-10-23 | 苏州耐思特塑胶有限公司 | A kind of auto parts machinery spray technology |
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| CN104879385B (en) | 2018-03-30 |
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Denomination of invention: A spraying process for bearing bush coating containing molybdenum disulfide Effective date of registration: 20220609 Granted publication date: 20180330 Pledgee: China Everbright Bank Limited by Share Ltd. Yantai branch Pledgor: YANTAI DAFENG PLAIN BEARING Co.,Ltd. Registration number: Y2022980007364 |