CN104893502A - Bearing bush coating and spraying technique thereof - Google Patents
Bearing bush coating and spraying technique thereof Download PDFInfo
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- CN104893502A CN104893502A CN201510307987.6A CN201510307987A CN104893502A CN 104893502 A CN104893502 A CN 104893502A CN 201510307987 A CN201510307987 A CN 201510307987A CN 104893502 A CN104893502 A CN 104893502A
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- Prior art keywords
- bearing shell
- coating
- spraying
- spray gun
- ultrasonic cleaning
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- 238000000576 coating method Methods 0.000 title claims abstract description 55
- 239000011248 coating agent Substances 0.000 title claims abstract description 44
- 238000005507 spraying Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 13
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005488 sandblasting Methods 0.000 claims abstract description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 8
- 239000010439 graphite Substances 0.000 claims abstract description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 8
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims abstract description 7
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 21
- 239000011159 matrix material Substances 0.000 claims description 19
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 18
- 239000004033 plastic Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- 230000002000 scavenging effect Effects 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 239000003082 abrasive agent Substances 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 2
- 229940113088 dimethylacetamide Drugs 0.000 abstract 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 abstract 1
- 229920001187 thermosetting polymer Polymers 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 206010068052 Mosaicism Diseases 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 239000001996 bearing alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a bearing bush coating and a spraying technique thereof. The coating is composed of the following materials in percentage by weight: 3% of molybdenum disulfide, 12% of ferric oxide, 14% of silicon carbide, 8% of graphite, 20% of epoxy resin and the balance of dimethyl acetamide. The technique comprises the following steps: cleaning and polishing, primary drying, primary ultrasonic deoiling, secondary drying, secondary ultrasonic deoiling, tertiary drying, sandblasting, primary spraying, secondary spraying, thermosetting, inspection and subpackaging. By combining the coating material and spraying technique, the adhesiveness of the coating with the bearing bush alloy layer is obviously enhanced, the coating has higher uniformity and low shedding tendency, and the product has high qualification rate.
Description
Technical field
The invention belongs to bearing shell manufacture field, be specifically related to a kind of bearing shell coating and spraying coating process thereof.
Background technology
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 conformability, 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 engine 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 production cost.
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, molybdenumdisulphide becomes irreplaceable first-selection in coated material component as solid lubricant, certainly, the final performance of bearing shell and the proportioning of molybdenumdisulphide 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 molybdenumdisulphide, the work-ing life of bearing shell is increased, these two patents of invention all lay particular emphasis on formulating of recipe and the preparation of bearing shell metal level, and innovation is preferably lacked for spraying coating process.For spraying coating process, applicant retrieves application number No. 201310061734.1 alloy-free floor bearing shell spraying molybdenumdisulphide techniques, molybdenumdisulphide 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.
Applicant finds when producing, in conjunction with rational production technique, can obtain when saving coating cost and same or more excellent possess conformability, mosaicism, wear resistance bearing shell, and coating and bearing shell matrix can be made to obtain stronger bounding force, coating difficult drop-off, bearing shell has higher conforming product rate and longer work-ing life.
Summary of the invention
The invention provides a kind of bearing shell coating and spraying coating process thereof, in maintenance or possess on the basis of more excellent conformability, mosaicism, wear resistance service requirements, bearing shell coating can be solved and easily come off and the higher technical problem of coating production cost.
The technical scheme that the present invention takes is:
A kind of bearing shell coating and spraying coating process thereof, the material component of described coating counts molybdenumdisulphide 2% by weight, ferric oxide 12%, silicon carbide 14%, graphite 6%, epoxy resin 20%, surplus are N,N-DIMETHYLACETAMIDE, described molybdenumdisulphide, ferric oxide, graphite are ground to form 2um powder particle, silicon carbide is ground to 20um powder particle, then adds epoxy resin and N,N-DIMETHYLACETAMIDE and mix and make.
A kind of bearing shell coating spraying technique, 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 dries, temperature controls 220 DEG C ± 5 DEG C, time controling 50-60 minute;
C, a ultrasonic wave are deoiled: ultrasonic cleaning scavenging solution working temperature control 35-40 DEG C, ultrasonic cleaning working 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 scavenging solution working temperature control 35-40 DEG C, ultrasonic cleaning working 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 sandblast machine and air compressor to carry out sandblasting 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 corundums 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 travelling speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters stoving 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 travelling speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters stoving 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 stoving oven solidification, temperature controls 180 DEG C ± 5 DEG C, time controling 60 minutes;
K, inspection packing.
In coated material component, molybdenumdisulphide has good oilness, this can ensure the fatigue resistance of bearing shell, and silicon carbide and graphite with the use of making frictional coefficient greatly reduce, effective raising bearing shell wear resisting property, silicon-carbide particle forms rigid support simultaneously, 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 coated material molecule, ferric oxide original idea is added as rumbling compound and rustproof layer, but due to the colour properties 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, in any case ultrasonic wave is deoiled time delay all solution never fall to remove the halfway problem of oil stain, only go through a ultrasonic wave deoil and dry, this part oil stain being difficult to eradicate can manifest at product surface again, to be deoiled by second time ultrasonic wave 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, sandblasting is done at smooth bearing shell matrix surface, this surface is made to form roughness, hard particles in coating can well be attached on uneven 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 qualification rate significantly promote and increase the service life.
Table 1 is in order to illustrate that coating of the present invention contrasts with adopting sputtered layer abrasion detection
Test set: MM-U10A end face frictional wear tester, detection load: 1600N, 60 minutes time, acquired results is as follows
| Experimental subjects | Conventional sputtered layer material | Coated material of the present invention |
| Frictional coefficient | 0.085 | 0.047 |
| Abrasion loss | 0.3μm | 0.02μm |
Accompanying drawing explanation
Fig. 1 is that bearing shell coating of the present invention observes surface evenness situation under metaloscope.
Fig. 2 is that traditional sputtered layer material observes surface evenness situation under metaloscope.
Embodiment
A kind of bearing shell coating and spraying coating process thereof, the material component of described coating counts molybdenumdisulphide 2% by weight, ferric oxide 12%, silicon carbide 14%, graphite 6%, epoxy resin 20%, surplus are N,N-DIMETHYLACETAMIDE, described molybdenumdisulphide, ferric oxide, graphite are ground to form 2um powder particle, silicon carbide is ground to 20um powder particle, then adds epoxy resin and N,N-DIMETHYLACETAMIDE and mix and make.
A kind of bearing shell coating spraying technique, 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 dries, temperature controls 220 DEG C ± 5 DEG C, time controling 50-60 minute;
C, a ultrasonic wave are deoiled: ultrasonic cleaning scavenging solution working temperature control 35-40 DEG C, ultrasonic cleaning working 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 scavenging solution working temperature control 35-40 DEG C, ultrasonic cleaning working 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 sandblast machine and air compressor to carry out sandblasting 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 corundums 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 travelling speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters stoving 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 travelling speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters stoving 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 stoving oven solidification, temperature controls 180 DEG C ± 5 DEG C, time controling 60 minutes;
K, inspection packing.
Claims (2)
1. a bearing shell coating and spraying coating process thereof, it is characterized in that: the material component of described coating counts molybdenumdisulphide 2% by weight, ferric oxide 12%, silicon carbide 14%, graphite 6%, epoxy resin 20%, surplus are N,N-DIMETHYLACETAMIDE, described molybdenumdisulphide, ferric oxide, graphite are ground to form 2um powder particle, silicon carbide is ground to 5um powder particle, then adds epoxy resin and N,N-DIMETHYLACETAMIDE and mix and make.
2. a bearing shell coating spraying technique, 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 ultrasonic wave are deoiled: ultrasonic cleaning scavenging solution working temperature control 35-40 DEG C, ultrasonic cleaning working 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 scavenging solution working temperature control 35-40 DEG C, ultrasonic cleaning working 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 sandblast machine and air compressor to carry out sandblasting 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 corundums 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 travelling speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters stoving 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 travelling speed 300 ~ 400mm/s, sprayed coating thickness 0.02 ~ 0.03mm, enters stoving 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 stoving 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 |
|---|---|---|---|
| CN201510307987.6A CN104893502A (en) | 2015-06-08 | 2015-06-08 | Bearing bush coating and spraying technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510307987.6A CN104893502A (en) | 2015-06-08 | 2015-06-08 | Bearing bush coating and spraying technique thereof |
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| Publication Number | Publication Date |
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| CN104893502A true CN104893502A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510307987.6A Pending CN104893502A (en) | 2015-06-08 | 2015-06-08 | Bearing bush coating and spraying technique thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079209A (en) * | 2019-04-02 | 2019-08-02 | 曹均 | Wide temperature range internal combustion engine bearing self-lubricating coat in use and its spraying method |
| 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 |
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| JPH06122840A (en) * | 1992-10-13 | 1994-05-06 | Nippon Telegr & Teleph Corp <Ntt> | Water repellent powder coating 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 |
| CN104532189A (en) * | 2014-12-12 | 2015-04-22 | 中国兵器科学研究院宁波分院 | Fine Sn phase AlSn20Cu coating for bearing bush and preparation method thereof |
-
2015
- 2015-06-08 CN CN201510307987.6A patent/CN104893502A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06122840A (en) * | 1992-10-13 | 1994-05-06 | Nippon Telegr & Teleph Corp <Ntt> | Water repellent powder coating 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 |
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Non-Patent Citations (1)
| Title |
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| 刘国杰: "《特种功能性涂料》", 31 July 2002 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110079209A (en) * | 2019-04-02 | 2019-08-02 | 曹均 | Wide temperature range internal combustion engine bearing self-lubricating coat in use and its spraying method |
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Application publication date: 20150909 |