CN102553806B - Anticorrosive coating spraying process for dry screw compressor - Google Patents
Anticorrosive coating spraying process for dry screw compressor Download PDFInfo
- Publication number
- CN102553806B CN102553806B CN201110444442.1A CN201110444442A CN102553806B CN 102553806 B CN102553806 B CN 102553806B CN 201110444442 A CN201110444442 A CN 201110444442A CN 102553806 B CN102553806 B CN 102553806B
- Authority
- CN
- China
- Prior art keywords
- screw compressor
- rotor
- dry screw
- spraying
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention discloses an anticorrosive coating spraying process for a dry screw compressor, which comprises the following working procedures and steps: firstly, a workpiece to be sprayed is subjected to pre-spraying treatment, then an anticorrosive coating is sprayed, and finally, the workpiece is sintered and cured. With the spraying process provided by the invention, the sintering and curing temperature of the anticorrosive coating is lower, which is 170 DEG C plus or minus 5 DEG C, so that the rotor and/or the case of the dry screw compressor can be kept not deforming to the greatest extent. The thickness of the coating is thicker, and is generally controlled to be 0.05-0.07 mm, and the corrosion resistance and wear resistance of the coating can be obviously improved. The adhesive force and the corrosion resistance of the anticorrosive coating are higher, so with the anticorrosive coating spraying process, the problem that the dry screw compressor is easily corroded during the actual running can be effectively solved, the gap between a driven rotor and a driving rotor and the gap between the rotor and a case can be reduced, and the volumetric efficiency of the dry screw compressor can be improved.
Description
Technical field
The present invention relates to helical-lobe compressor technical field, relate in particular to the anticorrosive coat spraying coating process of a kind of dry screw compressor rotor and housing.
Background technology
In helical-lobe compressor, most critical be pair of parallel, intermeshing yin, yang rotor, rotor is moving component, its rotating speed is high, spiral surface is complicated, the margin of tolerance is small.
If the rotor of dry screw compressor and shell inner surface be seal coat not, what the gap between negative and positive rotor need to be done is relatively large, and internal leakage meeting increases thereupon like this, is therefore difficult to obtain higher volumetric efficiency.In addition, owing to can there is a certain amount of moisture in compressed air, be also easy to corrode rotor and housing.After the rotor and shell inner surface increase coating of dry screw compressor, rotor clearance can reduce, and volumetric efficiency promotes thereupon.In addition, because coating has good corrosion-resisting function, service life of Extending Rotor and housing greatly.
In prior art before the present invention, in order to prevent corrosion, some employing stainless steel materials are made rotor, if adopt stainless steel rotor, although the Corrosion Protection of rotor has improved, but the Corrosion Protection of housing does not still get a promotion, the processing technology of stainless steel rotor is poor in addition, and cost is very high.The polytetrafluorethylecoatings coatings of the employing single component also having, according to existing open source information, coating sintering curing temperature reaches 380 ℃, sintering time 2-4 hour, this is for small size rotor, as root diameter is less than 120 millimeters with interior rotor, is easy to cause rotor-type facial disfigurement, and then causes a hidden trouble.In addition, adopt this polytetrafluorethylecoatings coatings, coating layer thickness is very thin, only has 0.01-0.03 millimeter, and decay resistance is poor, coating spray good after, generally in workshop or warehouse place about one month, rotor surface just there will be the phenomenon of getting rusty, anticorrosion ability is undesirable.
Summary of the invention
The present invention provides a kind of anticorrosive coating spraying process for dry screw compressor in order to solve the problem that above-mentioned prior art exists, and on the rotor of dry screw compressor and housing, spraying corrosion resistant coating protects it to avoid corrosion.
Object of the present invention is achieved through the following technical solutions:
An anticorrosive coating spraying process for dry screw compressor, comprises following operation and step:
Pretreatment before A, spraying:
(1) with industrial gasoline, clean the surface of the work that needs spraying;
(2) with organic solvent, surface of the work is carried out to Ultrasonic Cleaning again;
(3) then at surface of the work, carry out sandblast or anodization;
(4) again with organic solvent, surface of the work is carried out to Ultrasonic Cleaning, the surface after cleaning is kept away manual-free and is touched, and should in 5 hours, spray;
B, spraying corrosion resistant coating, described anticorrosive coat is multi-component erosion shield, its key component comprises polytetrafluoroethylene (PTFE) and molybdenum bisuphide:
(1) workpiece is placed on to preheating in baking oven, preheat temperature is 50-70 ℃, and the time is 1-2 hour;
(2) adopt spray gun once to spray surface of the work, after having sprayed, workpiece is put into baking oven and be dried, baking temperature is 50-70 ℃;
(3) after surface of the work is dry, again sprays and be dried processing, and repeating above-mentioned steps until coating reaches desired thickness;
C, sintering curing:
After surface coating thickness reaches 0.05-0.07 millimeter, workpiece is put into baking oven and carry out sintering curing, solidification temperature is 150 ± 5 ℃, programming rate≤5 ℃/min, to 150 ± 5 ℃ of insulations 0.5 hour, then continue to be warming up to 170 ± 5 ℃, be incubated 1 hour, then with baking oven, naturally cool to 40 ℃ of following taking-ups.
Further, described workpiece mainly comprises rotor and/or the housing of dry screw compressor, and described surface of the work is rotor outer surface and/or shell inner surface.
Further, the organic solvent of described operation A comprises trichloro-ethylene, benzinum or acetone.
Further, during described process B spraying, pressure is controlled at 0.1-0.2MPa, and spray gun becomes 70-90 degree angle with surface of the work, and approximately 20 ± 5 centimetres of distances, walk rifle speed at 0.02-0.04 meter per second, and spray gun evenly moves in the same direction.
Further, the thickness of described spraying primary coating is 0.01-0.02 millimeter.
Compared with prior art, the present invention has following beneficial effect:
Spraying coating process of the present invention, erosion shield sintering curing temperature is lower, is 170 ± 5 ℃, can farthest keep the rotor of dry screw compressor and/or housing indeformable.Coating layer thickness is thicker, and general control is at 0.05-0.07 millimeter, and the decay resistance of coating and mar proof can significantly promote.Anticorrosive coat adhesive force and corrosion resistance are strong, the present invention can effectively solve dry screw compressor and when actual motion, easily produce the problem of corrosion, and can reduce the gap between gap, rotor and the housing between negative and positive rotor, to promote the volumetric efficiency of dry screw compressor.
The specific embodiment
Below in conjunction with each embodiment, describe the present invention in detail.
Embodiment 1
For preventing corrosion, extend the service life of dry screw compressor, at the rotor outer surface of dry screw compressor, need to carry out anticorrosive coat spray treatment.Erosion shield can be single or multiple lift structure.
The present embodiment adopts multi-component erosion shield, and this coating comprises the key components such as polytetrafluoroethylene (PTFE), molybdenum bisuphide.
Rotor outer surface at dry screw compressor applies the method that said composition forms anticorrosive coat, and anticorrosive coat spraying coating process is as follows:
Pretreatment before A, spraying:
(1) with industrial gasoline, clean the rotor surface that needs spraying;
(2) with organic solvent trichloro-ethylene, rotor surface is carried out to Ultrasonic Cleaning again;
(3) then at rotor surface, carry out blasting treatment;
(4) blasting treatment is carried out Ultrasonic Cleaning with organic solvent trichloro-ethylene to rotor surface after completing again, and the clean surface after cleaning is forbidden with hand, to touch again, and should in 5 hours, spray;
B, spraying corrosion resistant coating:
(1) first rotor is placed on to preheating in baking oven, preheat temperature is 50 ℃, and the time is 2 hours;
(2) preheating complete after employing lotus board No1 spray gun rotor surface is once sprayed, source of the gas can be used compressed air, compressed air need be through oil removing and dry processing; During spraying, pressure is controlled at 0.1MPa, and spray gun becomes 70 degree angles with rotor surface, and approximately 20 centimetres of distances, walk rifle speed at 0.02 meter per second, and spray gun evenly moves in the same direction, and the thickness of spraying primary coating is 0.01 millimeter;
After having sprayed, rotor is put into baking oven and be dried, baking temperature is 50 ℃;
(3) after rotor surface is dry, again sprays and be dried processing, and repeating above-mentioned steps until coating reaches 0.05 millimeter of desired thickness;
C, sintering curing:
Until rotor surface coating layer thickness, reach after 0.05 millimeter, rotor is put into baking oven and carry out sintering curing, solidification temperature is 150 ℃, programming rate≤5 ℃/min, to 150 ℃ of insulations 0.5 hour, then continue to be warming up to 170 ℃, be incubated 1 hour, then with baking oven, naturally cool to 40 ℃ of following taking-ups, can complete the anticorrosive coat spray treatment at rotor outer surface.
Embodiment 2
For preventing corrosion, extend the service life of dry screw compressor, in the shell inner surface of dry screw compressor, need to carry out anticorrosive coat spray treatment.Erosion shield can be single or multiple lift structure.
The present embodiment adopts multi-component erosion shield, and this coating comprises the key components such as polytetrafluoroethylene (PTFE), molybdenum bisuphide.
Shell inner surface at dry screw compressor applies the method that said composition forms anticorrosive coat, and anticorrosive coat spraying coating process is as follows:
Pretreatment before A, spraying:
(1) with industrial gasoline, clean the shell inner surface that needs spraying;
(2) with organic solvent benzinum, shell inner surface is carried out to Ultrasonic Cleaning again;
(3) then in shell inner surface, carry out anodization;
(4) anodization is carried out Ultrasonic Cleaning with organic solvent benzinum to shell inner surface after completing again, and the shell inner surface after cleaning is forbidden with hand, to touch again, and should in 5 hours, spray;
B, spraying corrosion resistant coating:
(1) first housing is placed on to preheating in baking oven, preheat temperature is 70 ℃, and the time is 1 hour;
(2) preheating complete after employing lotus board No2 spray gun shell inner surface is once sprayed, source of the gas can be used nitrogen; During spraying, pressure is controlled at 0.2MPa, and spray gun becomes an angle of 90 degrees with shell inner surface, and approximately 25 centimetres of distances, walk rifle speed at 0.04 meter per second, and spray gun evenly moves in the same direction, and the thickness of spraying primary coating is 0.01-0.02 millimeter;
After having sprayed, housing is put into baking oven and be dried, baking temperature is 70 ℃;
(3) after shell inner surface is dry, again sprays and be dried processing, and repeating above-mentioned steps until coating reaches 0.07 millimeter of desired thickness;
C, sintering curing:
Until shell inner surface coating layer thickness, reach after 0.07 millimeter, housing is put into baking oven and carry out sintering curing, solidification temperature is 155 ℃, programming rate≤5 ℃/min, to 155 ℃ of insulations 0.5 hour, then continue to be warming up to 175 ℃, be incubated 1 hour, then with baking oven, naturally cool to 40 ℃ of following taking-ups, can complete the anticorrosive coat spray treatment in shell inner surface.
Embodiment 3
For preventing corrosion, extend the service life of dry screw compressor, at shell inner surface and the rotor outer surface of dry screw compressor, need to carry out anticorrosive coat spray treatment.Erosion shield can be single or multiple lift structure.
The present embodiment adopts multi-component erosion shield, and this coating comprises the key components such as polytetrafluoroethylene (PTFE), molybdenum bisuphide.
Shell inner surface and rotor outer surface at dry screw compressor apply the method that said composition forms anticorrosive coat, and anticorrosive coat spraying coating process is as follows:
Pretreatment before A, spraying:
(1) with industrial gasoline, clean shell inner surface and the rotor outer surface that needs spraying;
(2) with organic solvent-acetone, shell inner surface and rotor outer surface are carried out to Ultrasonic Cleaning again;
(3) then in shell inner surface and rotor outer surface, carry out blasting treatment;
(4) blasting treatment is carried out Ultrasonic Cleaning with organic solvent-acetone to shell inner surface and rotor outer surface after completing again, and the clean surface after cleaning is forbidden with hand, to touch again, and should in 5 hours, spray;
B, spraying corrosion resistant coating:
(1) first housing and rotor are placed on to preheating in baking oven, preheat temperature is 60 ℃, and the time is 1.5 hours;
(2) preheating complete after employing lotus board No1 spray gun (or other equivalent spray guns) shell inner surface and rotor outer surface are once sprayed, source of the gas can be used nitrogen; During spraying, pressure is controlled at 0.15MPa, and spray gun becomes 80 degree angles with surface of the work, and approximately 15 centimetres of distances, walk rifle speed at 0.03 meter per second, and spray gun evenly moves in the same direction, and the thickness of spraying primary coating is 0.01-0.02 millimeter;
After having sprayed, housing and rotor are put into baking oven and be dried, baking temperature is 60 ℃;
(3) after shell inner surface and rotor outer surface are dry, again spray and be dried processing, and repeating above-mentioned steps until coating reaches 0.06 millimeter of desired thickness;
C, sintering curing:
Until shell inner surface and rotor outer surface coating layer thickness, reach after 0.06-0.07 millimeter, housing and rotor are put into baking oven and carry out sintering curing, solidification temperature is 145 ℃, programming rate≤5 ℃/min, to 145 ℃ of insulations 0.5 hour, then continue to be warming up to 165 ℃, be incubated 1 hour, then with baking oven, naturally cool to 40 ℃ of following taking-ups, can complete the anticorrosive coat spray treatment at shell inner surface and rotor outer surface.
Disclosed is above only several specific embodiments of the application, but the application is not limited thereto, and the changes that any person skilled in the art can think of, all should drop in the application's protection domain.
Claims (5)
1. an anticorrosive coating spraying process for dry screw compressor, is characterized in that, comprises following operation and step:
Pretreatment before A, spraying:
(1) with industrial gasoline, clean the surface of the work that needs spraying;
(2) with organic solvent, surface of the work is carried out to Ultrasonic Cleaning again;
(3) then at surface of the work, carry out sandblast or anodization;
(4) again with organic solvent, surface of the work is carried out to Ultrasonic Cleaning, the surface after cleaning is kept away manual-free and is touched, and should in 5 hours, spray;
B, spraying corrosion resistant coating, described anticorrosive coat is multi-component erosion shield, its key component comprises polytetrafluoroethylene (PTFE) and molybdenum bisuphide:
(1) workpiece is placed on to preheating in baking oven, preheat temperature is 50-70 ℃, and the time is 1-2 hour;
(2) adopt spray gun once to spray surface of the work, after having sprayed, workpiece is put into baking oven and be dried, baking temperature is 50-70 ℃;
(3) after surface of the work is dry, again sprays and be dried processing, and repeating above-mentioned steps until coating reaches desired thickness;
C, sintering curing:
After surface coating thickness reaches 0.05-0.07 millimeter, workpiece is put into baking oven and carry out sintering curing, solidification temperature is 150 ± 5 ℃, programming rate≤5 ℃/min, to 150 ± 5 ℃ of insulations 0.5 hour, then continue to be warming up to 170 ± 5 ℃, be incubated 1 hour, then with baking oven, naturally cool to 40 ℃ of following taking-ups.
2. anticorrosive coating spraying process for dry screw compressor as claimed in claim 1, is characterized in that, described workpiece mainly comprises rotor and/or the housing of dry screw compressor, and described surface of the work is rotor outer surface and/or shell inner surface.
3. anticorrosive coating spraying process for dry screw compressor as claimed in claim 1, is characterized in that, the organic solvent of described operation A comprises trichloro-ethylene, benzinum or acetone.
4. anticorrosive coating spraying process for dry screw compressor as claimed in claim 1, it is characterized in that, during described process B spraying, pressure is controlled at 0.1-0.2MPa, spray gun becomes 70-90 degree angle with surface of the work, approximately 20 ± 5 centimetres of distances, walk rifle speed at 0.02-0.04 meter per second, and spray gun evenly moves in the same direction.
5. anticorrosive coating spraying process for dry screw compressor as claimed in claim 1, is characterized in that, the thickness of described spraying primary coating is 0.01-0.02 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110444442.1A CN102553806B (en) | 2011-12-27 | 2011-12-27 | Anticorrosive coating spraying process for dry screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110444442.1A CN102553806B (en) | 2011-12-27 | 2011-12-27 | Anticorrosive coating spraying process for dry screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102553806A CN102553806A (en) | 2012-07-11 |
| CN102553806B true CN102553806B (en) | 2014-03-12 |
Family
ID=46401184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110444442.1A Expired - Fee Related CN102553806B (en) | 2011-12-27 | 2011-12-27 | Anticorrosive coating spraying process for dry screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102553806B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549941A (en) * | 2015-01-13 | 2015-04-29 | 无锡市曙光高强度紧固件有限公司 | Bolt, stud and nut surface anti-corrosion treatment process |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20130452A1 (en) | 2013-03-26 | 2014-09-27 | Riem Service S R L | PROCESS FOR THE REGENERATION OF THE PUMPING GROUP OF A "OIL-FREE" VOLUMETRIC SCREW COMPRESSOR. |
| CN103736650A (en) * | 2014-01-22 | 2014-04-23 | 苏州新区特氟龙塑料制品厂 | Teflon spraying process |
| CN104562933A (en) * | 2014-12-23 | 2015-04-29 | 德阳天元重工有限公司 | Cable clamp bolt for suspension bridge and surface treatment method of cable clamp bolt for suspension bridge |
| CN107790357A (en) * | 2017-10-30 | 2018-03-13 | 安徽博古特机电科技有限公司 | A kind of spraying coating process of compressor case protective coating |
| CN109722169A (en) * | 2017-10-30 | 2019-05-07 | 惠州市深创实业有限公司 | A kind of marcel waver heating board |
| CN107999348A (en) * | 2018-01-03 | 2018-05-08 | 深圳市深创谷技术服务有限公司 | One kind spraying pre-treating method and spraying pretreating device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280090A (en) * | 2008-05-16 | 2008-10-08 | 中国石油兰州石油化工公司 | Corrosion-resistant composite engineering plastics and preparation thereof |
| WO2008141592A1 (en) * | 2007-05-24 | 2008-11-27 | Zhejiang Changsheng Sliding Bearing Co., Ltd | A lead-free self-lubricating bearing and its producing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222412A (en) * | 1997-11-12 | 1999-07-14 | 北京市石景山区京磁技术公司 | Anticorrosion method for surface of Nd-Fe-B permanet magnet |
| CN100516529C (en) * | 2005-12-08 | 2009-07-22 | 无锡压缩机股份有限公司 | technology for spraying corrosion resistant coating on dry screw compressor rotor |
-
2011
- 2011-12-27 CN CN201110444442.1A patent/CN102553806B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008141592A1 (en) * | 2007-05-24 | 2008-11-27 | Zhejiang Changsheng Sliding Bearing Co., Ltd | A lead-free self-lubricating bearing and its producing method |
| CN101280090A (en) * | 2008-05-16 | 2008-10-08 | 中国石油兰州石油化工公司 | Corrosion-resistant composite engineering plastics and preparation thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549941A (en) * | 2015-01-13 | 2015-04-29 | 无锡市曙光高强度紧固件有限公司 | Bolt, stud and nut surface anti-corrosion treatment process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102553806A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102553806B (en) | Anticorrosive coating spraying process for dry screw compressor | |
| CN102653643B (en) | Zinc-based composite coating for improving corrosion resistance of neodymium-iron-boron magnet | |
| CN101773901A (en) | Method for improving property of dacromet coating on surface of metal member | |
| CN102278568B (en) | Ductile cast iron pipe with waterproof protective layer and production process thereof | |
| CN102430508A (en) | Thermokalite-resisting polytetrafluoro powder static coating on carbon steel container | |
| CN105665261A (en) | Spray-coating process for plastic-sprayed power steel pipe rod | |
| CN105154807A (en) | Medium-temperature insulating anti-torque coating and coating method thereof | |
| CN103695834A (en) | Method for spraying titanium coating on substrate | |
| CN104128294A (en) | Inner spraying device and process of large volume seamless steel gas cylinder | |
| US6887529B2 (en) | Method of applying environmental and bond coatings to turbine flowpath parts | |
| CN202029462U (en) | Steel member anticorrosion structure | |
| CN104549941A (en) | Bolt, stud and nut surface anti-corrosion treatment process | |
| CN112981302A (en) | Site construction process of steel structure anticorrosion composite coating in south sea atmospheric environment | |
| CN102500537B (en) | Preparation method for anticorrosion wear-resistant anti-scaling plunger of oil well pump | |
| CN106011728A (en) | Compressor coated with wear-resisting anticorrosive coating | |
| CN102963068A (en) | Anti-corrosion coating capable of resisting high temperatures and strong acid | |
| CN101967667A (en) | Physical pretreatment and electrophoresis coating process of aluminum magnesium alloy | |
| CN108977754A (en) | A kind of plasma spray coating process based on super fine composite powder | |
| CN106065846B (en) | A kind of corrosion-resistant blade of wind-driven generator and process of surface treatment | |
| CN105499108A (en) | Process for coating surfaces of metal components with composite anticorrosion coatings | |
| CN111778469A (en) | Method for improving bonding strength of thermal spraying coating on surface of light alloy part | |
| CN109722109A (en) | A kind of metal type pipe Electrolyzed Processing cathode insulation coating and preparation method | |
| CN111828777A (en) | Processing method of pipeline anticorrosive coating | |
| CN103014704A (en) | Preparation method of novel high-efficiency long-life thermal barrier coating | |
| US11525376B2 (en) | Valve for internal combustion engines having a coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI INGERSOLL AIR COMPRESSOR CO., LTD. Free format text: FORMER OWNER: SHANGHAI AIR-TEC COMPRESSED AIR SYSTEM AND ENGINEERING CO., LTD. Effective date: 20130419 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201108 MINHANG, SHANGHAI TO: 200245 MINHANG, SHANGHAI |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20130419 Address after: 200245 No. 468, Wen Jing Road, Shanghai, Minhang District Applicant after: Shanghai Ingersoll Rand Compressor Co., Ltd. Address before: 201108 No. 5209 Hongmei South Road, Shanghai, Minhang District Applicant before: Shanghai Air-Tec Compressed Air System and Engineering Ltd Co. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20201227 |