CN101735680B - Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof - Google Patents
Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof Download PDFInfo
- Publication number
- CN101735680B CN101735680B CN2009102438058A CN200910243805A CN101735680B CN 101735680 B CN101735680 B CN 101735680B CN 2009102438058 A CN2009102438058 A CN 2009102438058A CN 200910243805 A CN200910243805 A CN 200910243805A CN 101735680 B CN101735680 B CN 101735680B
- Authority
- CN
- China
- Prior art keywords
- powder
- coating
- wear resistant
- brush type
- type sealed
- 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
Images
Landscapes
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a wear resistant self-lubricating coating for a brush type sealed track and a preparation method thereof, belonging to the technical field of a coating for a rotor track in a brush type sealed structure, and a preparation method thereof. The coating of the invention comprises the following components in weight percent: 10-20% of Ag, 9-11% of Co, 3.8-6% of C and the balance W. The preparation method taking WC-12Co powder and Ag powder as raw materials comprises the following steps, preparing the raw materials into composite powder by a spray prilling process, screening out the composite powder with the particle size of 15-45 mu m, and spraying the composite powder on the surface of the brush type sealed track by supersonic speed flame spray coating, thereby preparing the wear resistant self-lubricating coating on the brush type sealed track, wherein the weight of the Ag powder in the raw materials accounts for 10-20% of the total weight of the WC-12Co powder and the Ag powder. The coating has moderate microhardness, good bonding strength, and good wear resistant anti-friction performance within the temperature range from room temperature to 600 DEG C.
Description
Technical field
The invention belongs to brush seal structure rotor runway with coating and preparing technical field thereof, particularly a kind of wear resistant self-lubricating coating that is used for brush type sealed track and preparation method thereof.
Background technology
Development along with aerospace, space technology; And many harsh working conditions have surmounted the operating limit of lubricating oil or fat, and traditional soft metal and other solid lubrication micro mist are as the anti-attrition tectum, and intensity is low; Wear no resistance, can not satisfy the composite request of performance.In this case, solid self-lubricating composite material arises at the historic moment.This matrix material can design composition easily according to working condition requirement to be formed, and has higher intensity and hardness on the one hand, can improve the secondary wear resistance of contact friction; The effect that has self-lubricating on the other hand again forms the solid lubrication transfer film between friction pair, reduce the frictional coefficient and the stable friction power loss of friction pair, realizes not having the purpose of self-lubricating under oil or the few deep-fried twisted dough sticks spare.Therefore the matrix material that has an excellent over-all properties has caused the extensive concern in lubricated field and has developed rapidly.
Hot-spraying techniques can prepare synthetic non-equilibrium novel material fast at material surface; Prepare the wear resistant friction reducing alloy layer; Coating and base material constitute the type material of wear resistant friction reducing jointly, and continuous show strong economic benefit in the modern chemical industry industry causes the attention of academia and industry member.That mainly develops has technology such as flame plating, plasma spraying, HVAF and detonation flame spraying.Wherein the HVAF technical application is more extensive, and its reason is that the HVAF flow velocity is high, and atmosphere is controlled, can obtain high-quality coating.Normal wear resistant components of adding is NiCr-CrC, WC/Co, CrO, NiCr/Co, Al in the wear-resistant coating of HVAF preparation
2O
3/ TiO
2And Al
2O
3Etc. coating.
The mode of solid lubrication is broadly divided into three major types: pressed powder, solid lubricant coating and whole lubricant.Pressed powder and integral material have been difficult to meet the demands under many situation, and have the coating of self-lubricating property to demonstrate its meliority.Self-lubricating coat in use can guarantee that body material itself has property such as have self-lubricating on the basis of very good mechanical properties, wear-resistant, and utilizes that coating is lubricated can to save material and the PT greatly.The kind of solid lubricant that is applied to the self-lubricating coat in use field is a lot: the graphite of laminate structure is arranged, MoS
2, BN etc.; The softer metal of quality is arranged, like Ag, Pb, In etc.; MOX, fluorochemical, phosphoric acid salt etc. are arranged.In general, in atmosphere, do the time spent, the solid lubricant with layered crystal structure is generally effective when low temperature; For fluorochemical and MOX then is at high temperature softening and have an oilness.Natural graphite is a kind of simple substance type layered solid lubricant, and before 550 ℃ of the oxidizing temperatures from room temperature to it, its The friction coefficient temperature rises and descends.The use temperature scope of synthetic graphite is lower than natural graphite, and top temperature is to being 480 ℃.PbO frictional coefficient at normal temperatures is bigger, but compares MoS demonstrating more than 400 ℃
2Also will good oilness.Research shows that PbO can show good lubricity in 480-850 ℃ of scope, but because international restriction to lead-containing materials, the application of PbO solid lubricant in coating also is restricted.CaF
2, BaF
2, LiF, NaF is very stable in strong oxidation and reducing atmosphere, and fusing point is generally all more than 815 ℃, at high temperature softens and has oilness, in practical application, proves CaF
2Be metal and pottery effective solid lubricant in 1000 ℃ high temperature.Silver itself has good antifriction performance and conductivity, and its fusing point is 960.5 ℃, in the scope of room temperature to 600 ℃, can show good self-lubricating property.The characteristic of silver makes it have ample scope for abilities widely at aerospace field.
As the substitute technology of comb tooth sealing, the brush seal technology has obtained application in many advanced persons' industrial gas turbine, aircraft engine and turbine, like the 501E internal combustion turbine of Siemens Westinghouse, airbus A320 mover etc.As being applied in the brush seal structure, the performance of the lip-deep wear resistant self-lubricating coating of rotor runway directly influences the whole use properties of mover and turbine.Therefore, in fields such as industrial gas turbine, aircraft engine and turbine, be badly in need of a kind of high performance brush type sealed track coating at present, to improve the use properties of mover or turbine.
Summary of the invention
The purpose of this invention is to provide a kind of wear resistant self-lubricating coating that is used for brush type sealed track and preparation method thereof.
A kind of wear resistant self-lubricating coating that is used for brush type sealed track is characterized in that, each component and weight percent thereof are following in this coating: Ag:10～20%, and Co:9～11%, C:3.8～6%, surplus is W.
A kind of preparation method who is used for the wear resistant self-lubricating coating of brush type sealed track; It is characterized in that; With WC-12Co powder and Ag powder is raw material, adopts atomizing granulating technology to process composite powder above-mentioned raw materials, filters out the composite powder that granularity is 15～45 μ m; Adopt HVAF that it is sprayed on the brush type sealed track surface; Then on brush type sealed track, prepare wear resistant self-lubricating coating, wherein, raw materials used middle Ag grain weight amount accounts for 10～20% of WC-12Co powder and Ag powder gross weight.In raw materials used Ag grain weight amount account for WC-12Co powder and Ag powder gross weight 18% the time, gained wear resistant self-lubricating coating wear resistant self-lubricating coating best results.
WC-12Co powder that the present invention is used and Ag powder are sophisticated powder-product on the market.
Beneficial effect of the present invention is: in the present invention; Adopt in the coating of HVAF preparation, WC is distributed in the coating as hard mutually equably, and having improved abrasion property can; Surrounded by Co around the WC; Make coating have shock resistance preferably and wear resisting property, Ag is distributed among the coating as lubricated mutually uniformly, has reduced the frictional coefficient of coating effectively.In a word, this coating has good wear resistant friction reducing and impact property, and the composite powder behind the mist projection granulating is sieved processing, makes it suitable to supersonic velocity flame plating equipment.Adopt this kind technology and material, only the need fund that less input just can significantly improve the surface property of comb tooth sealed track, thus the use properties and the work-ing life of improving mover integral body.
The wear resistant self-lubricating coating that can be used for the intensified process on brush type sealed track surfaces, field such as industrial gas turbine, aircraft engine and turbine provided by the invention has good wear resistant friction reducing performance and good binding performance.Adopt this coating of HVAF preparation to have good binding intensity, in room temperature to 600 ℃ scope, have good wear resistant friction reducing performance.The appearance of this coating can solve the short problem of runway service life in the brush seal structure that adopts in fields such as industrial gas turbine, aircraft engine and turbine, thereby improves the use properties of equipment.
Description of drawings
Fig. 1 is the thermospray composite powder microscopic appearance of embodiment 3;
Fig. 2 is the coatingsurface microscopic appearance of embodiment 3 preparations.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further:
Embodiment 1
On brush type sealed track, prepare wear resistant self-lubricating coating; Method is following: with WC-12Co powder and Ag powder is raw material; Ag grain weight amount accounts for 10% of WC-12Co powder and Ag powder gross weight in raw materials used, adopts atomizing granulating technology to process composite powder above-mentioned raw materials, filters out the composite powder that granularity is 15～45 μ m; Adopt HVAF that it is sprayed on the brush type sealed track surface, then on brush type sealed track, prepare wear resistant self-lubricating coating.
The wear resistant self-lubricating coating that is used for brush type sealed track of method for preparing, each component and weight percent thereof are following: Ag:9.8%, Co:10.8%, C:4.5%, W:74.9%.
The wear resistant self-lubricating coating of present embodiment preparation and high base strength be greater than 60MPa, the MV HV of microhardness
0.3The frictional coefficient that records coating when being 847,600 ℃ is 0.7.
Embodiment 2
On brush type sealed track, prepare wear resistant self-lubricating coating; Method is following: with WC-12Co powder and Ag powder is raw material; Ag grain weight amount accounts for 15% of WC-12Co powder and Ag powder gross weight in raw materials used, adopts atomizing granulating technology to process composite powder above-mentioned raw materials, filters out the composite powder that granularity is 15～45 μ m; Adopt HVAF that it is sprayed on the brush type sealed track surface, then on brush type sealed track, prepare wear resistant self-lubricating coating.
The wear resistant self-lubricating coating that is used for brush type sealed track of method for preparing, each component and weight percent thereof are following: Ag:15.3%, Co:10.2%, C:4.2%, W:70.3%.
The wear resistant self-lubricating coating of present embodiment preparation and high base strength be greater than 60MPa, microhardness MV HV
0.3The frictional coefficient that records coating when being 802,600 ℃ is 0.65.
Embodiment 3
On brush type sealed track, prepare wear resistant self-lubricating coating; Method is following: with WC-12Co powder and Ag powder is raw material; Ag grain weight amount accounts for 18% of WC-12Co powder and Ag powder gross weight in raw materials used, adopts atomizing granulating technology to process composite powder above-mentioned raw materials, filters out the composite powder that granularity is 15～45 μ m; Adopt HVAF that it is sprayed on the brush type sealed track surface, then on brush type sealed track, prepare wear resistant self-lubricating coating.
The wear resistant self-lubricating coating that is used for brush type sealed track of method for preparing, each component and weight percent thereof are following: Ag:17.9%, Co:9.8%, C:4.1%, W:68.2%.
The thermospray composite powder microscopic appearance of present embodiment is as shown in Figure 1, and as can be seen from the figure, the powder microscopic appearance is spherical, shows that powder has good flowability.In addition, each particle is the second particle that is made up of a large amount of primary particles, and there is a large amount of holes in second particle itself, helps the abundant fusion of particle, improves the sedimentation effect of powder.The coatingsurface microscopic appearance of preparation is as shown in Figure 2, and as can be seen from the figure, the Ag element is distributed between the whole coating equably, can play lubrication.
The wear resistant self-lubricating coating of present embodiment preparation and high base strength be greater than 60MPa, microhardness MV HV
0.3The frictional coefficient that records coating when being 765,600 ℃ is 0.63.According to the design requirements of brush type sealed track to the top coat performance; The performance of this coating is the most approaching, so the wear resistant self-lubricating coating that Ag grain weight amount accounts for WC-12Co powder and Ag powder gross weight 18% o'clock composite powder preparation in the raw material is the coating that best brush type sealed track is used.
Embodiment 4
On brush type sealed track, prepare wear resistant self-lubricating coating; Method is following: with WC-12Co powder and Ag powder is raw material; Ag grain weight amount accounts for 20% of WC-12Co powder and Ag powder gross weight in raw materials used, adopts atomizing granulating technology to process composite powder above-mentioned raw materials, filters out the composite powder that granularity is 15～45 μ m; Adopt HVAF that it is sprayed on the brush type sealed track surface, then on brush type sealed track, prepare wear resistant self-lubricating coating.
The wear resistant self-lubricating coating that is used for brush type sealed track of method for preparing, each component and weight percent thereof are following: Ag:19.8%, Co:9.6%, C:4%, W:66.6%.
The wear resistant self-lubricating coating of present embodiment preparation and high base strength are greater than 60MPa, and the MV HV0.3 of microhardness records coating when being 689,600 ℃ frictional coefficient is 0.60.
Claims (1)
1. preparation method who is used for the wear resistant self-lubricating coating of brush type sealed track; It is characterized in that; With WC-12Co powder and Ag powder is raw material, adopts atomizing granulating technology to process composite powder above-mentioned raw materials, filters out the composite powder that granularity is 15～45 μ m; Adopt HVAF that it is sprayed on the brush type sealed track surface, then on brush type sealed track, prepare wear resistant self-lubricating coating;
Ag grain weight amount accounts for 18% of WC-12Co powder and Ag powder gross weight in the said raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102438058A CN101735680B (en) | 2009-12-21 | 2009-12-21 | Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102438058A CN101735680B (en) | 2009-12-21 | 2009-12-21 | Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101735680A CN101735680A (en) | 2010-06-16 |
| CN101735680B true CN101735680B (en) | 2012-06-20 |
Family
ID=42459724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102438058A Expired - Fee Related CN101735680B (en) | 2009-12-21 | 2009-12-21 | Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101735680B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484815A (en) * | 2013-09-24 | 2014-01-01 | 无锡市福莱达石油机械有限公司 | Method capable of improving corrosion resistance of low carbon WC/12Co coating in molten zinc |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614687B (en) * | 2013-11-22 | 2016-04-27 | 西峡龙成特种材料有限公司 | A kind of preparation technology of continuous casting crystallizer copper plate surface cermet coating |
| CN112682513B (en) * | 2020-12-18 | 2023-01-20 | 武汉宇格电力设备有限公司 | Self-lubricating mechanical seal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1782126A (en) * | 2004-11-29 | 2006-06-07 | 中国科学院金属研究所 | Method for preparing hard wear-resistant coating |
| CN101121605A (en) * | 2007-07-05 | 2008-02-13 | 江苏大学 | Use of high temperature superconductive material in antifriction, wear-resistance and lubrication |
-
2009
- 2009-12-21 CN CN2009102438058A patent/CN101735680B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1782126A (en) * | 2004-11-29 | 2006-06-07 | 中国科学院金属研究所 | Method for preparing hard wear-resistant coating |
| CN101121605A (en) * | 2007-07-05 | 2008-02-13 | 江苏大学 | Use of high temperature superconductive material in antifriction, wear-resistance and lubrication |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484815A (en) * | 2013-09-24 | 2014-01-01 | 无锡市福莱达石油机械有限公司 | Method capable of improving corrosion resistance of low carbon WC/12Co coating in molten zinc |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101735680A (en) | 2010-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5302450A (en) | Metal encapsulated solid lubricant coating system | |
| US5464486A (en) | Solid lubricant and hardenable steel coating system | |
| CN100378352C (en) | Metal-to-metal spherical bearing | |
| US5486299A (en) | Wear-resistant lubricant composition | |
| CN107475710B (en) | A kind of Ni of multilayered structure3Al based self-lubricating material and preparation method thereof | |
| CN101735680B (en) | Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof | |
| CN103666189B (en) | A kind of shock-resistant high temperature resistant ablation self-lubricating abrasion-resistant coating and preparation method thereof | |
| CN108374878A (en) | A kind of more Material cladding Self-lubricating gears | |
| CN104120001A (en) | Lubricant and use thereof | |
| CN104480342A (en) | Anti-corrosion copper-based brake material with high friction coefficient and preparation method of anti-corrosion copper-based brake material | |
| CN105112760B (en) | A kind of preparation method and applications of TiAl based high-temperature self-lubricating alloy material | |
| CN107541694A (en) | A kind of preparation method of rotary packing ring surface lubrication wear-resisting coating | |
| CN103710116B (en) | Coating material for preventing engine crankshaft from being locked, and preparation method and application method of coating material | |
| CN102506074A (en) | Oil-bearing copper-based powder metallurgy gasket for self-lubricating rod end joint bearing, preparation method and self-lubricating rod end joint bearing | |
| CN105332012B (en) | A kind of copper plate of crystallizer plating thermal spraying complex gradient coating and preparation method thereof | |
| CN202039141U (en) | Corrosion-resistant and wear-resistant alloy electroplating body | |
| CN103307109A (en) | Method for manufacturing wear-resistant bearing bush | |
| US5747428A (en) | Solid lubricant for low and high temperature applications | |
| CN108061097A (en) | A kind of unleaded Sliding bush and production technology | |
| CN107013359B (en) | A kind of piston and preparation method with compound texturing doping coating | |
| CN103276238B (en) | A kind of preparation method of copper base alloy sliding surface bearing | |
| CN203979145U (en) | A kind of bearing shell with black composite coating | |
| CN106609348A (en) | Adjustment interface | |
| CN103290255B (en) | A kind of copper base alloy sliding surface bearing | |
| CN110643918A (en) | Coating material for internal combustion engine cylinder, preparation method thereof and internal combustion engine cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100088, 2, Xinjie street, Beijing Co-patentee after: Youyan Powder New Materials Co.,Ltd. Patentee after: GENERAL Research Institute FOR NONFERROUS METALS Address before: 100088, 2, Xinjie street, Beijing Co-patentee before: GRIPM ADVANCED MATERIALS Co.,Ltd. Patentee before: General Research Institute for Nonferrous Metals |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190808 Address after: 101407 Beijing city Huairou District Yanqi Yanqi Economic Development Zone South four Street No. 12 Patentee after: Youyan Powder New Materials Co.,Ltd. Address before: 100088, 2, Xinjie street, Beijing Co-patentee before: Youyan Powder New Materials Co.,Ltd. Patentee before: General Research Institute for Nonferrous Metals |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20191221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |