CN110121604A - A kind of wind driven generator principal shaft and its protective layer attachment technique equipped with protective layer - Google Patents
A kind of wind driven generator principal shaft and its protective layer attachment technique equipped with protective layer Download PDFInfo
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- CN110121604A CN110121604A CN201780001870.2A CN201780001870A CN110121604A CN 110121604 A CN110121604 A CN 110121604A CN 201780001870 A CN201780001870 A CN 201780001870A CN 110121604 A CN110121604 A CN 110121604A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
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- General Engineering & Computer Science (AREA)
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Abstract
A kind of wind driven generator principal shaft equipped with protective layer is attached with Teflon surface layer (13) on the surface of wind driven generator principal shaft, and enhancement layer is provided in the middle part of generator shaft, and enhancement layer is carbon fiber wire (9) or carbon-fiber film.Furthermore, also disclose a kind of attachment technique of protective layer, whole greases including removing workpiece surface to be coated, grease is dissolved using organic solvent and heating makes it volatilize completely, workpiece is cleaned using blasting treatment mode and keeps its surface crude, powder spraying, Teflon powdery particle is blown out from trap by compressed air, make powdery particle by workpiece attract and it is attached to it, workpiece is heated to the melting temperature that its temperature is higher than powder body material, powdery particle is overlying on to melt during spraying thereon, it is dry, sintering, by workpiece heating until an irreversible reaction occurs in heating furnace, coating material melting, reticular structure is formed with bonding additives, workpiece is naturally cooled into room temperature by taking out in hot stove.
Description
The present invention relates to technical field of wind power generator, and in particular to a kind of wind driven generator principal shaft and its protective layer attachment technique equipped with protective layer.
With the continuous development of wind power technology, the development of large sized unit has gradually established its status in wind-powered electricity generation industry.Technically, large sized unit can reduce wind power plant operation expense, improve the market competitiveness.The single-machine capacity of Wind turbines persistently increases in world's wind-power market, and single-machine capacity maximum Wind turbines in China's reach 10MW within 2014.
With the maturation of technology, wind power generating set technology mitigates per kilowatt weight, the direction for improving transfer efficiency is developed towards single-machine capacity is improved.Reduce complete machine weight need from many aspects, multi-part start with, and wind power principal axis alsies occupy biggish weight as the important spare part in gear-box.With being continuously increased for power, wind power principal axis has become more and more huger.Try to reduce the weight of wind power principal axis a project so that the weight for mitigating complete machine has become wind-powered electricity generation designer, in design studies, after wind power principal axis diameter, flange size determine, in the case where intensity allows, it is the major measure for mitigating wind power principal axis weight by the enlarged-diameter of wind power principal axis inner hole.In order to guarantee that corrosion will not occur and extend from wind power principal axis surface, the inner hole wall of big megawatt wind power mainshaft, outer surface generally require corrosion-inhibiting coating identical with wind power principal axis surface.Construction for wind power principal axis inner hole wall, outside surface anticorrosion coating, mesh are difficult spraying uniformly since lacquer spraying technique is more complicated, and time-consuming and laborious, large labor intensity, low efficiency, environmental pollution are serious still using the method manually painted；Especially sand blowing even more seriously pollutes environment.Currently, being for wind power principal axis inner hole, the solution that surface spraying is uneven, quality is inconsistent: unqualified place is sprayed again by artificial detection, it is tangible bothersome, and still it is difficult to control uniformity.
Summary of the invention
It is an object of the present invention to overcome defect existing in the prior art, provide a kind of simple process, no pollution to the environment, favorable anti-corrosion effect a kind of wind driven generator principal shaft equipped with protective layer high in machining efficiency.
To achieve the above object, the technical scheme is to design a kind of wind driven generator principal shafts equipped with protective layer, it is attached with Teflon surface layer on the surface of the wind driven generator principal shaft, enhancement layer is provided in the middle part of generator shaft, enhancement layer is carbon fiber wire or is carbon-fiber film.
For the ease of can firmly be combined between Teflon and wind power principal axis surface, and it is made to adhere to simple process, be easily operated automatically, preferably technical solution is, the Teflon surface layer is sprayed on the surface of generator shaft by spraying process, and the surface includes the surface of outer electric machine main shaft and the surface of inner hole.
In order to enable protective layer can play a protective role and reduce to the greatest extent the thickness of protective layer to the surface of wind power principal axis, reduce the cost of protective layer raw material, preferred technical solution in addition, the Teflon surface layer with a thickness of 0.1~0.3mm.
For the ease of reducing the structure size of honourable electro spindle, the intensity of wind power principal axis is improved, preferred technical solution is in addition, the wind driven generator principal shaft includes mandrel and set axis, and carbon fiber wire or carbon-fiber film setting are between mandrel and set axis.
For the ease of carbon fiber wire to be embedded into the inside of wind power principal axis, and it is made to form an overall structure between wind power principal axis, further preferred technical solution is also, axial notch or spiral groove are equipped on the surface of the mandrel, annular groove is respectively equipped on the end of mandrel and the anchor ring of flange, spring piston ring is equipped in annular groove, threading hole is evenly equipped on spring piston ring, the threading hole on the first spring piston ring is passed through with carbon fiber wire, the end of carbon fiber wire one end is stuck in outside the threading hole of the first spring piston ring side by setting fastening, the other end of carbon fiber wire passes through the second spring piston ring that mandrel the other end is arranged in, the third spring piston ring being then passed through in the annular groove being arranged on ring flange anchor ring, and it is stuck in by setting fastening outside the threading hole of third spring piston ring side.
For the ease of carbon fiber wire to be embedded into the inside of wind power principal axis, and it is made to form an overall structure between wind power principal axis, further preferred technical solution is in addition, the spiral groove packet
Several left-hand screw grooves and/or several right-hand screw grooves are included, the carbon fiber wire is tightly embedded intp in several left-hand screw grooves and/or several right-hand screw grooves.
For the ease of carbon fiber wire to be embedded into the inside of wind power principal axis, and it is made to form an overall structure between wind power principal axis, further preferred technical solution is also, annular groove in the shaft end portion is the groove or step being arranged on nut outer surfaces, and nut is threadedly engaged with the thread segment that mandrel end is arranged in.
For the ease of carbon fiber wire to be embedded into the inside of wind power principal axis, and it is made to form an overall structure between wind power principal axis, further preferred technical solution between the outer surface of the mandrel and the inner surface for covering axis in addition, be closely interference fitted；One end of one end covering mandrel of the set axis, the side of the other end covering ring flange of the set axis and the outer edge of ring flange.
The second object of the present invention is, overcomes defect existing in the prior art, provides the attachment technique of a kind of simple process, no pollution to the environment, favorable anti-corrosion effect a kind of wind driven generator principal shaft protective layer high in machining efficiency.
To achieve the above object, the technical scheme is to design a kind of attachment technique of wind driven generator principal shaft protective layer, the attachment technique of the protective layer is comprised the technical steps that:
Step 1: whole greases of workpiece surface to be coated are removed；
Step 2: grease is dissolved using organic solvent and being heated up to about 400 DEG C makes it volatilize completely；
Step 3: workpiece is cleaned using the mechanical system of blasting treatment and keeps its surface crude；
Step 4: powder spraying, Teflon powdery particle is blown out from trap by compressed air, in the way that it leads to spray tip, the region equipped with one section of static electrification is mutually exclusive in its flight path by Teflon particle with like charges, and it is spraying to form uniform cloud form, by workpiece grounding to be sprayed, the region of a static electrification is formd whereby, between spray gun and workpiece, attract powdery particle by workpiece, and attached to it；
Step 5: workpiece is heated to the melting temperature that its temperature is higher than powder body material, is overlying on powdery particle and melts during spraying thereon by powder melting；
Step 6: it is dry, wet coating is heated in baker, temperature control is at 100 DEG C hereinafter, until most solvent has evaporated；
Step 7: workpiece is heated to 250~300 DEG C in heating furnace by sintering, until an irreversible reaction occurs: coating material melting forms reticular structure with bonding additives；
Step 8: it is cooling, workpiece is naturally cooled into room temperature by taking out in hot stove.
Wherein preferred technical solution is that the sintering time in the step 7 is 30~60 minutes.
The advantages and beneficial effects of the present invention are: a kind of wind driven generator principal shaft and its protective layer attachment technique equipped with protective layer of the present invention has the characteristics that simple processing technology, no pollution to the environment, favorable anti-corrosion effect are high in machining efficiency, while the structure size of wind driven generator principal shaft can also be reduced.Since the surface in wind driven generator principal shaft is attached with Teflon (polytetrafluoroethylene (PTFE)) erosion resistant coating, following features are made it have:
1, non-stick: nearly all substance is not bonded with polytetrafluoroethyl coating films.Very thin film also shows that good non-adhesiveness energy.
2, heat resistance: polytetrafluoroethyl coating films have excellent heat-resisting and low temperature tolerance characteristics.Short time can high temperature resistant to 300 DEG C, can be generally used continuously between 240 DEG C~260 DEG C, have significant thermal stability, it can work without embrittlement under cryogenic temperature, not melt at high temperature.
3, sliding property: polytetrafluoroethyl coating films have lower coefficient of friction.Coefficient of friction generates variation when load sliding, but numerical value is only between 0.05-0.15.
4, moisture resistance: polytetrafluoroethyl coating films without water stained on its surface and oil, when production operation, are also not easy to be stained with solution, are such as stained with a small amount of dirt, simple wiping can be removed.Downtime is short, saves working hour and can improve working efficiency.
5, wear resistance: under high load, there is excellent wear-resisting property.Under certain load, has wear-resistant and inadhesive two-fold advantage.
6, corrosion resistance: polytetrafluoroethylene (PTFE) is hardly corroded by drug; it is able to bear the alkali metal in addition to melting; the effect of all strong acid (including chloroazotic acid), strong oxidizer, reducing agent and various organic solvents except fluorinated dielectric and higher than 300 DEG C sodium hydroxides, can protect part and protects against any kind of chemical attack.
Fig. 1 is the schematic cross-sectional view for the wind driven generator principal shaft that the present invention is equipped with protective layer；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the B-B cross-sectional view of Fig. 1；
Fig. 4 is the partial enlarged view in the portion C of Fig. 1；
Fig. 5 is the main view that the present invention is equipped with mandrel in the wind driven generator principal shaft of protective layer.
In figure: 1, mandrel；2, axis is covered；3, axial center hole；4, ring flange；5, spiral groove；6, annular groove；7, spring piston ring；7.1, the first spring piston ring；7.2, second spring piston ring；7.3, third spring piston ring；8, threading hole；9, carbon fiber wire；10, setting fastening；11, nut；12, thread segment；13, Teflon surface layer.
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.The following examples are only intended to illustrate the technical solution of the present invention more clearly, and not intended to limit the protection scope of the present invention.
As shown in Fig. 1~5, the present invention is a kind of wind driven generator principal shaft equipped with protective layer, is attached with Teflon surface layer 13 on the surface of the wind driven generator principal shaft, and enhancement layer is provided in the middle part of generator shaft, and enhancement layer is carbon fiber wire or is carbon-fiber film.
For the ease of can firmly be combined between Teflon and wind power principal axis surface, and it is made to adhere to simple process, be easily operated automatically, the preferred embodiment of the invention is, the Teflon surface layer 13 is sprayed on the surface of generator shaft by spraying process, and the surface includes the surface of outer electric machine main shaft and the surface of inner hole.
In order to enable protective layer can play a protective role and reduce to the greatest extent the thickness of protective layer to the surface of wind power principal axis, reduce the cost of protective layer raw material, the preferred embodiment of the invention in addition, the Teflon surface layer with a thickness of 0.1~0.3mm.
For the ease of reducing the structure size of honourable electro spindle, improve the intensity of wind power principal axis, the preferred embodiment of the invention is also, the wind power principal axis includes mandrel 1 and set axis 2, carbon fiber die sleeve layer or carbon fiber stratum reticulare are equipped between mandrel 1 and set axis 2, wind power principal axis is equipped with axial center hole 3, and one end of wind power principal axis is equipped with ring flange 4.
For the ease of carbon fiber wire or carbon-fiber film to be clamped in the inside of wind power principal axis, it is set to constitute an overall structure with wind power principal axis, the preferred embodiment of the invention is, axial notch or spiral groove 5 are equipped on the surface of the mandrel 1, annular groove 6 is respectively equipped on the end of mandrel 1 and the anchor ring of flange, spring piston ring 7 is equipped in annular groove 6, threading hole 8 is evenly equipped on spring piston ring 7, the threading hole on the first spring piston ring 7.1 is passed through with carbon fiber wire 9, the end of 9 one end of carbon fiber wire is stuck in outside the threading hole 8 of 7.1 side of the first spring piston ring by setting fastening 10, the other end of carbon fiber wire 9 passes through the second spring piston ring 7.2 that 1 the other end of mandrel is arranged in, the third spring piston ring 7.3 being then passed through in the annular groove 6 being arranged on 4 anchor ring of ring flange, and pass through setting fastening 1 0 is stuck in outside the threading hole 8 of 7.3 side of third spring piston ring.
In order to enable resistant to bending tensile stress had both can be improved in the inside of wind power principal axis in carbon fiber wire 9, the antitorque shear stress gone can be improved again, further preferred embodiment of the present invention is also, the spiral groove 5 includes several left-hand screw grooves and/or several right-hand screw grooves, and the carbon fiber wire 9 is tightly embedded intp in several left-hand screw grooves and/or several right-hand screw grooves.Due to carbon fiber wire 9 be it is spiral be embedded in groove, the stress of every bit can be broken down into the shear stress of axial tensile stress and tangential direction on carbon fiber wire.The structure size that wind driven generator principal shaft can significantly be reduced after tensile stress and shear stress are improved, can not only mitigate the weight of wind driven generator principal shaft, but also can save raw material in this way.
Certain pretightning force is generated on mandrel after being embedded in groove for the ease of carbon fiber wire 9, the preferred embodiment of the invention is also, annular groove 6 in the shaft end portion is the groove or step being arranged on 11 outer surface of nut, and nut 11 is threadedly engaged with the thread segment 12 that 1 end of mandrel is arranged in.
It is closely connected for the ease of being constituted between elastomer film and mandrel, and carbon-fiber film can be made to generate certain pretightning force, the preferred embodiment of the invention is also, the carbon-fiber film is the structure for the twill shell type being woven by carbon fiber wire 9, carbon-fiber film tight fit is sleeved on the outer surface of mandrel 1, be respectively equipped with annular groove at the both ends of mandrel 1, by spring piston ring 7 by the both ends fixed clamp of carbon-fiber film in annular groove 6.
In order to ensure mandrel 1 and set axis 2 between close connection cooperate, avoid mandrel with cover axis it
Between relative rotation, the preferred embodiment of the invention in addition, the mandrel 1 outer surface and cover axis 2 inner surface between be closely interference fitted.
In order to avoid carbon fiber wire layer or carbon fiber film layer are exposed, disconnect its abrasion, further preferred embodiment of the present invention is in addition, one end of the set axis 2 covers one end of mandrel 1, the side of the other end covering ring flange of the set axis 2 and the outer edge of ring flange.
Another technical solution of the invention is to design a kind of processing technology equipped with enhancement layer wind power principal axis, and the processing technology includes the following steps:
Step 1: by design size processing mandrel 1 and set axis 2；
Step 2: processing the axial groove or spiral groove 5 for inlaying carbon fiber wire 9 on the surface of mandrel 1；
Step 3: processing thread segment 12 in one end of mandrel 1, the annular groove 6 for being embedded in spring piston ring 7 is processed on the other end of mandrel 1 and the outer edge surface of ring flange；
Step 4: production, for the nut 11 with the cooperation of the thread segment 12 of 1 one end of mandrel, the outer surface of nut 11 processes the annular groove 6 or step being embedded in for spring piston ring 7；
Step 5: processing the spring piston ring 7 for being embedded in annular groove 6, the threading hole 8 for passing through carbon fiber wire 9 is processed on spring piston ring 7；
Step 6: spring piston ring 7 is placed on mould bases, the first spring piston ring 7.1, second spring piston ring 7.2, threading hole 8 uniformly distributed on third spring piston ring 7.3 are gradually passed through in order with carbon fiber wire 9, and the both ends of final carbon fiber wire 9 are stuck on the outside of the threading hole 8 of the first spring piston ring 7.1, third spring piston ring 7.3 (such as the threading of racket) by setting fastening 10 or end clamping element；
Step 7: the first spring piston ring 7.1, second spring piston ring 7.2 and the third spring piston ring 7.3 that are installed with carbon fiber wire 9 are snapped fits into respectively on nut 11 in the annular groove 6 for being used to be embedded in spring piston ring on the outer edge surface for being used for annular groove 6 or step, the other end of mandrel 1 and ring flange 4 that spring piston ring is embedded in；
Step 8: making the carbon fiber wire 9 being embedded in groove generate pretightning force by adjusting nut 11, then pass through fritillaria locking nut 11；
Step 9: freezing being put into freezer embedded with the mandrel 1 of carbon fiber wire 9, axis 2 will be covered
It is put into and adds heating in people's furnace；
Step 10: the mandrel 1 after freezing is set in together with the set axis 2 after heating, the wind power principal axis after being set with can be used to subsequent and processing after reaching room temperature.
In order to avoid carbon fiber wire 9 is cut off when bolt mounting holes on processing wind power flange, so that the effect of carbon fiber wire 9, substantially reduces, the preferred embodiment of the invention is, the pitch-row between several threading holes 8 on the third spring piston ring 7.3 is greater than the diameter of flange side surface upper bolt hole, so that carbon fiber line 9 is passed through between bolt hole two-by-two.
In order to ensure that can achieve the purpose that tight interference fit between mandrel and set axis, simultaneously again convenient for being simply successfully assembled together between mandrel and suit, the preferred embodiment of the invention is also, it is -90~-190 DEG C that the mandrel 1, which is put into the temperature freezed in freezer, cooling time is 1~3 hour, the set axis 2 is put into plus the interior heating temperature heated of people's furnace is 150~260 DEG C, and heating time is 40~80 minutes.So that mandrel outer diameter after cooling and the dimension difference covered between the internal diameter after axis heating are greater than 0.5mm, it is less than 1.5mm.
Another embodiment of the invention is to design a kind of attachment technique of wind driven generator principal shaft protective layer, and the attachment technique of the protective layer comprises the technical steps that:
Step 1: whole greases on workpiece to be coated (wind driven generator principal shaft) surface are removed；
Step 2: grease is dissolved using organic solvent and being heated up to about 400 DEG C makes it volatilize completely；
Step 3: workpiece is cleaned using the mechanical system of blasting treatment and keeps its surface crude；
Step 4: powder spraying, Teflon powdery particle is blown out from trap by compressed air, in the way that it leads to spray tip, the region equipped with one section of static electrification is mutually exclusive in its flight path by Teflon particle with like charges, and it is spraying to form uniform cloud form, by workpiece grounding to be sprayed, the region of a static electrification is formd whereby, between spray gun and workpiece, attract powdery particle by workpiece, and attached to it；
Step 5: workpiece is heated to the melting temperature that its temperature is higher than powder body material, is overlying on powdery particle and melts during spraying thereon by powder melting；
Step 6: it is dry, wet coating is heated in baker, temperature control is at 100 DEG C hereinafter, until most solvent has evaporated；
Step 7: workpiece is heated to 200~250 DEG C in heating furnace by sintering, until an irreversible reaction occurs: coating material melting forms reticular structure with bonding additives；
Step 8: it is cooling, workpiece is naturally cooled into room temperature by taking out in hot stove.
Wherein preferred technical solution is that the sintering time in the step 7 is 30~60 minutes.
The above is only a preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, without departing from the technical principles of the invention; several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
- A kind of wind driven generator principal shaft equipped with protective layer, which is characterized in that be attached with Teflon surface layer on the surface of the wind driven generator principal shaft, enhancement layer is provided in the middle part of generator shaft, enhancement layer is carbon fiber wire or is carbon-fiber film.
- The wind driven generator principal shaft as described in claim 1 for being equipped with protective layer, which is characterized in that the Teflon surface layer is sprayed on the surface of generator shaft by spraying process, and the surface includes the surface of outer electric machine main shaft and the surface of inner hole.
- The as claimed in claim 2 wind driven generator principal shaft for being equipped with protective layer, which is characterized in that the Teflon surface layer with a thickness of 0.1~0.3mm.
- The wind driven generator principal shaft as claimed in claim 3 for being equipped with protective layer, which is characterized in that the wind driven generator principal shaft includes mandrel and set axis, and carbon fiber wire or carbon-fiber film setting are between mandrel and set axis.
- The wind driven generator principal shaft as claimed in claim 4 for being equipped with protective layer, it is characterized in that, axial notch or spiral groove are equipped on the surface of the mandrel, annular groove is respectively equipped on the end of mandrel and the anchor ring of flange, spring piston ring is equipped in annular groove, threading hole is evenly equipped on spring piston ring, the threading hole on the first spring piston ring is passed through with carbon fiber wire, the end of carbon fiber wire one end is stuck in outside the threading hole of the first spring piston ring side by setting fastening, the other end of carbon fiber wire passes through the second spring piston ring that mandrel the other end is arranged in, the third spring piston ring being then passed through in the annular groove being arranged on ring flange anchor ring, and it is stuck in by setting fastening outside the threading hole of third spring piston ring side.
- The wind driven generator principal shaft as claimed in claim 5 for being equipped with protective layer, it is characterized in that, the spiral groove includes several left-hand screw grooves and/or several right-hand screw grooves, and the carbon fiber wire is tightly embedded intp in several left-hand screw grooves and/or several right-hand screw grooves.
- The wind driven generator principal shaft as claimed in claim 6 for being equipped with protective layer, which is characterized in that the annular groove in the shaft end portion is the groove or step being arranged on nut outer surfaces, and nut is threadedly engaged with the thread segment that mandrel end is arranged in.
- The wind driven generator principal shaft as claimed in claim 7 for being equipped with protective layer, which is characterized in that be closely interference fitted between the outer surface of the mandrel and the inner surface for covering axis；One end of one end covering mandrel of the set axis, the side of the other end covering ring flange of the set axis and the outer edge of ring flange.
- A kind of protective layer attachment technique of the wind driven generator principal shaft as described in any one of claims 1 to 3 equipped with protective layer, which is characterized in that the attachment technique of the protective layer comprises the technical steps that:Step 1: whole greases of workpiece surface to be coated are removed；Step 2: grease is dissolved using organic solvent and being heated up to about 400 DEG C makes it volatilize completely；Step 3: workpiece is cleaned using the mechanical system of blasting treatment and keeps its surface crude；Step 4: powder spraying, Teflon powdery particle is blown out from trap by compressed air, in the way that it leads to spray tip, the region equipped with one section of static electrification is mutually exclusive in its flight path by Teflon particle with like charges, and it is spraying to form uniform cloud form, by workpiece grounding to be sprayed, the region of a static electrification is formd whereby, between spray gun and workpiece, attract powdery particle by workpiece, and attached to it；Step 5: workpiece is heated to the melting temperature that its temperature is higher than powder body material, is overlying on powdery particle and melts during spraying thereon by powder melting；Step 6: it is dry, wet coating is heated in baker, temperature control is at 100 DEG C hereinafter, until most solvent has evaporated；Step 7: workpiece is heated to 250~300 DEG C in heating furnace by sintering, until an irreversible reaction occurs: coating material melting forms reticular structure with bonding additives；Step 8: it is cooling, workpiece is naturally cooled into room temperature by taking out in hot stove.
- Protective layer attachment technique as claimed in claim 9, which is characterized in that the sintering time in the step 7 is 30~60 minutes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/114767 WO2019109263A1 (en) | 2017-12-06 | 2017-12-06 | Wind turbine main shaft having protective layer and process for coating protective layer thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110121604A true CN110121604A (en) | 2019-08-13 |
| CN110121604B CN110121604B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201780001870.2A Active CN110121604B (en) | 2017-12-06 | 2017-12-06 | Wind driven generator spindle with protective layer and protective layer adhering process thereof |
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| CN (1) | CN110121604B (en) |
| WO (1) | WO2019109263A1 (en) |
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| CN113013824A (en) * | 2021-02-24 | 2021-06-22 | 中国核动力研究设计院 | Sealing device for reactor core detector assembly |
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| CN113013824A (en) * | 2021-02-24 | 2021-06-22 | 中国核动力研究设计院 | Sealing device for reactor core detector assembly |
| CN113013824B (en) * | 2021-02-24 | 2022-10-21 | 中国核动力研究设计院 | Sealing device for reactor core detector assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019109263A1 (en) | 2019-06-13 |
| CN110121604B (en) | 2021-05-25 |
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