CN104879385B - A kind of spraying coating process of the coating of bearing shell containing molybdenum disulfide - Google Patents
A kind of spraying coating process of the coating of bearing shell containing molybdenum disulfide Download PDFInfo
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- CN104879385B CN104879385B CN201510308041.1A CN201510308041A CN104879385B CN 104879385 B CN104879385 B CN 104879385B CN 201510308041 A CN201510308041 A CN 201510308041A CN 104879385 B CN104879385 B CN 104879385B
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Abstract
The present invention discloses a kind of coating containing molybdenum disulfide and its technique applied to bearing shell spraying, the material component of the coating is calculated as polytetrafluoroethylene 3% by weight, molybdenum disulfide 8%, di-iron trioxide 2%, silicon carbide ceramics 4%, graphite 4%, zinc powder 0.2%, epoxy resin 35%, surplus is dimethyl acetamide, technique disclosed by the invention includes cleaning polishing, first drying, one time ultrasonic wave deoils, secondary drying, twice ultrasonic ripple deoils, dry three times, sandblasting, once spray, secondary spraying-and-heating solidification and inspection packing step, the combination that the present invention passes through coating material and spraying coating process, significantly improve the cohesive of coating and bearing alloy, coating uniformity is more preferable, coating is difficult for drop-off, product qualification rate is high.
Description
Technical field
The invention belongs to bearing shell manufacture field, and in particular to a kind of spraying coating process of the coating of bearing shell containing molybdenum disulfide.
Background technology
The structure of traditional bearing shell is to adhere to an alloy-layer on steel back layer, is added on alloy-layer by way of plating or sputter
One layer of soft anti-attrition layer.The main purpose of the anti-attrition layer is to increase the compliance of inner surface of bearing bush, mosaicism, wearability.
However, constantly riseing with engine power, bearing shell is faced with more and more severe working environment, and traditional bearing shell often goes out
Existing alloy-layer peels off and the phenomenon of plating exfoliation, causes the situation of engine tile kilning.And electroplate anti-attrition layer mode and belong to high dirty
Processing mode is contaminated, and requirement of the sputtering way to equipment is very high, increases production cost.
In recent years, each bearing shell producer progressively forms coating on bearing shell surface using spraying coating process and substitutes anti-attrition layer as one kind
Emerging trend, in such a process, molybdenum disulfide turn into first choice irreplaceable in coating material component as kollag,
Certainly, the addition of bearing shell final performance and the proportioning and other matching components of molybdenum disulfide has close ties.Through retrieval, application
Number CN201210498063.5 patents disclose a kind of method that solid lubricant coating is prepared on copper-based bearing shell, in the patent application
More detailed discloses coating material therefor component and proportioning, and publication number CN 101629601B patents provide a kind of height in addition
Molecule abrasion-proof bearing bush, it is related to the metal bush high molecular abrasion-proof being made up of polyamidoimide complex polyester and molybdenum disulfide
Layer, makes the service life of bearing shell increase, and this two patents of invention all lay particular emphasis on the formula design of bearing shell metal level and prepared,
And lack preferably innovation for spraying coating process.For spraying coating process, applicant retrieves application number 201310061734.1
Alloy-free layer bearing shell sprays molybdenum disulfide technique, and molybdenum disulfide is solidificated in bearing shell matrix by the stronger dependence cohesive material of the technique
Surface, but this mode can not preferably solve the problems, such as coating shedding.
Applicant has found in production, with reference to rational production technology, can be obtained in the case where saving coating cost
Same or more excellent possesses compliance, mosaicism, wearability bearing shell, and coating can be made to obtain stronger bonding with bearing shell matrix
Power, coating is difficult for drop-off, and bearing shell has higher product qualification rate and longer service life.
The content of the invention
The present invention provides a kind of spraying coating process of the coating of bearing shell containing molybdenum disulfide, is keeping or is possessing more excellent comply with
On the basis of property, mosaicism, wearability requirement, can solve the skill that bearing shell coating is easy to fall off and coating production cost is higher
Art problem.
The present invention adopts the technical scheme that：
A kind of spraying coating process of the coating of bearing shell containing molybdenum disulfide, the material component of the coating are calculated as polytetrafluoro by weight
Second is dilute 3%, molybdenum disulfide 8%, di-iron trioxide 2%, silicon carbide ceramics 4%, graphite 4%, zinc powder 0.2%, epoxy resin
35%th, surplus is dimethyl acetamide, by the polytetrafluoroethylene, molybdenum disulfide, silicon carbide ceramics, graphite, is ground into 1-2um
Powder particle, zinc powder and di-iron trioxide are ground to 4-5um powder particles, add epoxy resin and dimethyl acetamide mixing
Uniformly it is made；
The technique of the spraying, comprises 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 dried, 220 DEG C ± 5 DEG C of temperature control, time control
50-60 minutes processed；
C, a ultrasonic wave deoils：Ultrasonic wave cleaning cleaning fluid operating temperature controls 35-40 DEG C, ultrasonic wave cleaning electricity
Flow control 4-5A, ultrasonic wave cleaning oil removing time control 50-60min；
D, secondary drying：Bearing shell matrix is positioned in vacuum dryer and dried, 220 DEG C ± 5 DEG C of temperature control, time control
50-60 minutes processed；
E, twice ultrasonic ripple deoils；Ultrasonic wave cleaning cleaning fluid operating temperature controls 35-40 DEG C, ultrasonic wave cleaning electricity
Flow control 4-5A, ultrasonic wave cleaning oil removing time control 50-60min；
F, dry three times：Drying temperature controls 180 DEG C ± 5 DEG C, drying time control 50-60 minutes；
G, sandblasting：Blasting treatment, air compressor pressure control are carried out to bearing shell matrix using sand-blasting machine and air compressor
0.72-0.82MPa processed, blasting pressure control 0.4-0.45MPa, blast time control are not less than
60min, the abrasive material that sandblasts select 30 mesh black corundums；
H, once spray：Bearing shell latch inclined-plane is divided on plastics magnetic sheet upwards, and the Tu layer is sprayed at axle by spray gun
Watt surface, the direction of spray gun operation is parallel with coated article face all the time, the spray gun speed of service
300~400mm/s, sprayed coating 0.02~0.03mm of thickness, enter drying oven in 135 DEG C of drying together with plastics magnetic sheet
45~50 minutes
I, secondary spraying：Bearing shell latch inclined-plane is divided downwards on plastics magnetic sheet, and spray gun is by the coating spraying in axle
Watt surface, the direction of spray gun operation is parallel with coated article face all the time, the spray gun speed of service
300~400mm/s, sprayed coating 0.02~0.03mm of thickness, enter drying oven in 135 DEG C of drying together with plastics magnetic sheet
45~50 minutes；
J, it is heating and curing：Product is put on solidification frame and enters drying oven solidification, 180 DEG C ± 5 DEG C of temperature control, time control
60 minutes；
K, packing is examined.
In coating material component, polytetrafluoroethylene and molybdenum disulfide have good lubricity, and this can ensure bearing shell
Fatigue resistance, and silicon carbide ceramics and graphite make coefficient of friction greatly reduce, effective to improve bearing shell wear-resisting
Performance, while silicon carbide ceramics, graphite and zinc particle form rigid support, thoroughly prevent bearing shell alloy face and bent axle it is straight
Friction is connect, becomes the friction to rub between coating material molecule in bent axle and bearing alloy face, di-iron trioxide is intended that conduct
What polishing agent and antirust coat added, but due to the color attribute of its own, unexpectedly red is obtained making finished product rear axle watt
Surface, there is extremely strong identification.
The spraying coating process differs from two aspects with other spraying coating process：1st, this technique has sternly to bearing shell matrix surface
The processing requirement of deoiling of lattice, after deoiling and dry after ultrasonic wave twice, bearing shell matrix surface remains without any oil stain, smooth
Clean surface makes that any gap will not be produced between bearing shell matrix and coating, and 2, sandblasting, done in smooth bearing shell matrix surface
Blasting treatment, the surface is set to form roughness, the hard particles in coating can be very good to be attached on mat surface, make its surface
The uniformity is more excellent than the bearing shell that other usual manners produce, and this point is especially apparent under metallograph contrast.Above-mentioned two side
Face can greatly improve the degree of adhesion of coating and bearing shell matrix, bearing shell production qualification rate is obviously improved and is extended using the longevity
Life.
Table 1 is illustrating that product of the present invention and like product performance detection contrast
Detection device：MM-U10A end face frictional wear testers, detection load：1600N, 60 minutes time, acquired results
It is as follows
| Experimental subjects | Conventional sputter layer material | Coating material of the present invention |
| Coefficient of friction | 0.085 | 0.04 |
| Wear extent | 0.3μm | 0.02μm |
Table 1
Brief description of the drawings
Fig. 1 is that bearing shell coating of the present invention observes surface evenness situation under metallographic microscope.
Fig. 2 is the surface evenness situation that traditional sputter layer material is observed under metallographic microscope.
Embodiment
A kind of coating containing molybdenum disulfide and its technique applied to bearing shell spraying, the material component of the coating is by weight
Be calculated as polytetrafluoroethylene 3%, molybdenum disulfide 8%, di-iron trioxide 2%, silicon carbide ceramics 4%, graphite 4%, zinc powder 0.2%,
Epoxy resin 35%, surplus are dimethyl acetamide, by the polytetrafluoroethylene, molybdenum disulfide, silicon carbide ceramics, graphite, are ground
1-2um powder particles are worn into, zinc powder and di-iron trioxide are ground to 4-5um powder particles, add epoxy resin and dimethyl
Acetamide is well mixed to be made.
A kind of coating containing molybdenum disulfide is applied to the technique of bearing shell spraying, comprises 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 dried, 220 DEG C ± 5 DEG C of temperature control, time control
50-60 minutes processed；
C, a ultrasonic wave deoils：Ultrasonic wave cleaning cleaning fluid operating temperature controls 35-40 DEG C, ultrasonic wave cleaning electricity
Flow control 4-5A, ultrasonic wave cleaning oil removing time control 50-60min；
D, secondary drying：Bearing shell matrix is positioned in vacuum dryer and dried, 220 DEG C ± 5 DEG C of temperature control, time control
50-60 minutes processed；
E, twice ultrasonic ripple deoils；Ultrasonic wave cleaning cleaning fluid operating temperature controls 35-40 DEG C, ultrasonic wave cleaning electricity
Flow control 4-5A, ultrasonic wave cleaning oil removing time control 50-60min；
F, dry three times：Drying temperature controls 180 DEG C ± 5 DEG C, drying time control 50-60 minutes；
G, sandblasting：Blasting treatment, air compressor pressure control are carried out to bearing shell matrix using sand-blasting machine and air compressor
0.72-0.82MPa processed, blasting pressure control 0.4-0.45MPa, blast time control are not less than 60min, and the abrasive material that sandblasts selects 30
Mesh black corundum；
H, once spray：Bearing shell latch inclined-plane is divided on plastics magnetic sheet upwards, and spray gun is by the coating spraying in axle
Watt surface, the direction of spray gun operation is parallel with coated article face all the time, spray gun 300~400mm/s of the speed of service, and sprayed coating is thick
0.02~0.03mm is spent, enter drying oven together with plastics magnetic sheet dries 45~50 minutes at 135 DEG C；
I, secondary spraying：Bearing shell latch inclined-plane is divided downwards on plastics magnetic sheet, and spray gun is by the coating spraying in axle
Watt surface, the direction of spray gun operation is parallel with coated article face all the time, spray gun 300~400mm/s of the speed of service, and sprayed coating is thick
0.02~0.03mm is spent, enter drying oven together with plastics magnetic sheet dries 45~50 minutes at 135 DEG C；
J, it is heating and curing：Product is put on solidification frame and enters drying oven solidification, 180 DEG C ± 5 DEG C of temperature control, time control
60 minutes；
K, packing is examined.
Claims (1)
- A kind of 1. spraying coating process of the coating of bearing shell containing molybdenum disulfide, it is characterised in that：The material component of the coating is by weight Be calculated as polytetrafluoroethylene 3%, molybdenum disulfide 8%, di-iron trioxide 2%, silicon carbide ceramics 4%, graphite 4%, zinc powder 0.2%, Epoxy resin 35%, surplus are dimethyl acetamide, by the polytetrafluoroethylene, molybdenum disulfide, silicon carbide ceramics, graphite, are ground 1-2um powder particles are worn into, zinc powder and di-iron trioxide are ground to 4-5um powder particles, add epoxy resin and dimethyl Acetamide is well mixed to be made, and the spraying coating process comprises 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 dried, 220 DEG C ± 5 DEG C of temperature control, time control 50-60 minutes；C, a ultrasonic wave deoils：Ultrasonic wave cleaning cleaning fluid operating temperature controls 35-40 DEG C, ultrasonic wave cleaning electric current control 4-5A processed, ultrasonic wave cleaning oil removing time control 50-60min；D, secondary drying：Bearing shell matrix is positioned in vacuum dryer and dried, 220 DEG C ± 5 DEG C of temperature control, time control 50-60 minutes；E, twice ultrasonic ripple deoils；Ultrasonic wave cleaning cleaning fluid operating temperature controls 35-40 DEG C, ultrasonic wave cleaning electric current control 4-5A processed, ultrasonic wave cleaning oil removing time control 50-60min；F, dry three times：Drying temperature controls 180 DEG C ± 5 DEG C, drying time control 50-60 minutes；G, sandblasting：Blasting treatment, air compressor pressure control are carried out to bearing shell matrix using sand-blasting machine and air compressor 0.72-0.82MPa, blasting pressure control 0.4-0.45MPa, blast time control are not less than 60min, and the abrasive material that sandblasts selects 30 mesh Black corundum；H, once spray：Bearing shell latch inclined-plane is divided on plastics magnetic sheet upwards, and spray gun is by the coating spraying in bearing shell table Face, the direction of spray gun operation is parallel with coated article face all the time, spray gun 300~400mm/s of the speed of service, sprayed coating thickness 0.02~0.03mm, enter drying oven together with plastics magnetic sheet and dried 45~50 minutes at 135 DEG C；I, secondary spraying：Bearing shell latch inclined-plane is divided downwards on plastics magnetic sheet, and spray gun is by the coating spraying in bearing shell table Face, the direction of spray gun operation is parallel with coated article face all the time, spray gun 300~400mm/s of the speed of service, sprayed coating thickness 0.02~0.03mm, enter drying oven together with plastics magnetic sheet and dried 45~50 minutes at 135 DEG C；J, it is heating and curing：Product is put on solidification frame and enters drying oven solidification, 180 DEG C ± 5 DEG C of temperature control, time control 60 is divided Clock；K, packing is examined.
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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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| CN104879385B true CN104879385B (en) | 2018-03-30 |
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| CN114392909A (en) * | 2017-03-14 | 2022-04-26 | 蚌埠奥特压缩机有限公司 | Ultrathin spraying oil-free lubrication method for compressor bearing bush |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2698514B2 (en) * | 1992-10-13 | 1998-01-19 | 日本電信電話株式会社 | Water repellent powder coating and coating method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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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 |
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