US3659861A - Particulate coating for the rubbing seal of a gas turbine regenerator - Google Patents
Particulate coating for the rubbing seal of a gas turbine regenerator Download PDFInfo
- Publication number
- US3659861A US3659861A US52309A US3659861DA US3659861A US 3659861 A US3659861 A US 3659861A US 52309 A US52309 A US 52309A US 3659861D A US3659861D A US 3659861DA US 3659861 A US3659861 A US 3659861A
- Authority
- US
- United States
- Prior art keywords
- particles
- regenerator
- fluoride
- shell
- 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 - Lifetime
Links
- 239000011248 coating agent Substances 0.000 title claims description 21
- 238000000576 coating method Methods 0.000 title claims description 21
- 239000002245 particle Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 10
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 7
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 7
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 12
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000002344 surface layer Substances 0.000 claims description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 6
- 235000013024 sodium fluoride Nutrition 0.000 claims description 6
- 239000011775 sodium fluoride Substances 0.000 claims description 6
- SDDGNMXIOGQCCH-UHFFFAOYSA-N 3-fluoro-n,n-dimethylaniline Chemical compound CN(C)C1=CC=CC(F)=C1 SDDGNMXIOGQCCH-UHFFFAOYSA-N 0.000 claims description 5
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 claims description 5
- 229910001632 barium fluoride Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000011162 core material Substances 0.000 description 18
- 239000011257 shell material Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000007750 plasma spraying Methods 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 101100004031 Mus musculus Aven gene Proteins 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
- F28D19/047—Sealing means
Definitions
- Rubbing seals having surface layers consisting essentially of uniform mixtures of a glazing material and a matrix material have excellent wear and friction properties when used with ceramics operating at high temperatures. Such surface layers are difficult to prepare, however, and inherently provide a constant amount of glazing material regardless of the wear rate.
- a seal member of this invention has a high temperature wear coating for rubbing against a relatively moving ceramic member that consists essentially of a plurality of particles having a core of glazing material surrounded by a shell of a metal capable of oxidizing at the operating temperature of the wear coating.
- the oxide of the metal shell does not abrade the ceramic member but instead wears off when the ceramic regenerator rubs against it to expose the glazing material. Greater amounts of glazing material are exposed in those portions of the seal member having higher wear rates until a balanced wear rate is achieved.
- Useful core materials include calcium fluoride, barium fluoride, lithium fluoride, sodium fluoride, molybdenum disulfide, and tungsten selenide.
- Nickel, copper and cobalt are most useful as the shell materials, although any of the metals having oxides disclosed as useful matrix materials in the aforementioned patent application also can be used.
- Coated particles can be made by any of a variety of techniques.
- Plasma spraying equipment is used to spray the coated particles onto a metal substrate having reasonably compatible thermal expansion properties.
- substrates are nickel-chromium stainless steels or other high temperature alloys such as lncoloy 600 or 750 sold by International Nickel Co. or l-Iastalloy X sold by Union Carbide Co.
- Plasma spraying is carried out at a temperature where the metal shells weld themselves to the substrate and to each other to form a cohesive, integral surface layer made up of a substantially continuous matrix formed from the metal shells of the particles that contains a large number of evenly distributed particles of glazing material.
- FIG. 1 is an exploded view of a disc type regenerator assembly for a gas turbine engine showing the relationship of the seal members to the regenerator.
- FIG. 2 is a sectional view through one of the seal members.
- FIG. 3 is an enlarged sectional view of a portion of the coating showing the final configuration of the particles.
- the housing of a gas turbine engine contains a substantially circular regenerator portion 10.
- a diametrical wall 12 separates a substantially circular passage in portion into two semi-circular gas flow passages 14 and 16. Hot exhaust gases flow upward through one of the passages and cooler air flows downward through the other passage in the conventional manner.
- a cross arm seal 18 is positioned on top of wall 12 and is surrounded on opposite sides by C-shaped seals 20 and 22. Seals 18, 20 and 22 are held non-rotatably with respect to housing portion 12 by any conventional means (not shown).
- a disc shaped ceramic regenerator 24 is positioned rotatably on top of seals 18, 20 and 22. Regenerator 24 is rotated relative to the seals by internal components of the engine.
- a D-shaped seal 26 is located above regenerator 24 and a cap (not shown) fits on top of housing portion 10 to hold the components in place.
- Each of the surfaces of seal members 18, 20, 22 and 26 that rub against regenerator 24 has a coating consisting essentially of a plurality of welded particles 28.
- the sectional view of FIG. 2 illustrates the particulate coating on top of cross arm seal member 18.
- Several layers of particles 28 can be applied to each seal member as desired. For best results each coating contains a minimum of the equivalent of at least two or three layers of particles.
- each particle consists essentially of a core 30 surrounded by a metal shell 32.
- Core 30 is a material capable of forming a glaze having a low coefficient of friction when rubbing against ceramic material at the anticipated operating temperature of the seal.
- Cross arm seal 18 typically operates at a temperature of about l,400 F. and preferably uses particles having cores of calcium fluoride surrounded by nickel shells.
- the C seal surrounding the passage carrying hot exhaust gases typically operates at about 800 F. and preferably uses particles having cores of lithium fluoride and sodium fluoride surrounded by shells of copper.
- the other C seal operates typically at a slightly cooler temperature of about 700 F. Its preferred particles have cores of a similar composition.
- D seal 26 operates at a relatively low temperature of about 600 F. and preferably uses particles having cores of molybdenum disulfide surrounded by shells of cobalt.
- Each shell 32 is a metal capable of oxidizing at the operating temperature to an oxide that does not abrade the ceramic material of regenerator 24 but instead wears away under the rubbing action of the regenerator.
- the particles are plasma sprayed onto the metal substrate of the seal in a manner such that the shells 32 melt or weld together and to the substrate to form a cohesive coating containing a plurality of dispersed cores 30.
- the combined effects of temperature and the rubbing action of the regenerator oxidizes the metals of the shells and rubs the oxide away to expose the core materials.
- the exposed core materials rapidly form a glaze having a low coefficient of friction.
- the particles can be fabricated into the form of a separate sheet.
- the sheet is fastened mechanically by riveting, for example, to a substrate. This technique reduces repair costs and provides some improvement in the thermal shock resistance of the assembly.
- this invention provides an effective coating for the rubbing seals of a ceramic regenerator.
- the coating exposes its cores of glazing material according to the demands of each individual portion of the seal. Because of the composite structure of the coating, it is highly resistant to salt attack brought on by the presence of road salt in the air and gas streams of the engine.
- a high temperature wear coating for rubbing against a ceramic member having relative motion said wear coating consisting essentially of a plurality of particles having a core of lubricating material surrounded by a shell of a metal capable of oxidizing at the operating temperature of the wear coating, said shells of said particles being welded to each other to form an integral structure having dispersed therein a plurality of said cores, the oxide of said metal shell being non abradable to the ceramic member rubbing a against the coating.
- a sliding seal for said regenerator comprising a metal substrate having a surface layer attached to one surface for rubbing against said ceramic regenerator, said surface layer comprising a plurality of particles, each of said particles having a core consisting of a glazing material surrounded by a shell of a metal oxidizable at the operating temperature of the coating, said shells being welded to each other to form an integral structure having dispersed therein a plurality of said cores.
- cores of the particles 5 are calcium fluoride, barium fluoride, lithium fluoride, sodium fluoride, molybdenum disulfide or tungsten selenide.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Sliding-Contact Bearings (AREA)
- Sealing Devices (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Particles having a core of a glazing material such as calcium fluoride surrounded by a shell of a metal that oxidizes at operating temperature are sprayed on a substrate to form a rubbing seal for a ceramic regenerator. The oxide of the metal forming these shells is non abradable to the ceramic regenerator. During engine operation the shell oxidizes and wears to expose appropriate amounts of the glazing material.
Description
O 1 United States Patent 1 1 3,659,861 Rao et a1. [45] May 2, 1972 [541 PARTICULATE COATING FOR THE [56] References Cited RUBBING SEAL OF A GAS TURBINE UNITED STATES PATENTS REGENERATOR [72] I I v I D R w dh Y h 3,468,699 9/1969 Kremith ..117/100B nven OI'SI emu 8]) I 6 a0, 00 aven; CS
vamp. Hang, Grosselle, both OfMich 3,407,866 10/1968 Sawchuk ..165/9 [73] Assignee: Ford Motor Company, Dearborn, Mich. Primary ExaminerSamuel B. Rothberg [22] Filed: July 6 1970 Att0rneyJohn R. Faulkner and Glenn S. Arendsen 1 pp 52,309 57 ABSTRACT Pt'lh' fl 1'1111' 52 US. Cl. ..277/96,277/D1G.6, 165/9, fig f f ijgfi g j f 15 7 2? 117/100 51 1111.0. ..F16j 15 54, C23C 11/16 fggf f'g l z. g g [58] Field ofSearch ..277 235 A, 96, D16 6; 165/9; ramlcregenem" em forming these shells is non abradable to the ceramic regenerator. During engine operation the shell oxidizes and wears to expose appropriate amounts of the glazing material.
4 Claims, 3 Drawing Figures Patented May 2, 1972 3,659,861
ATTORNEYS PARTICULATE COATING FOR THE RUBBING SEAL OF A GAS TURBINE REGENERATOR SUMMARY OF THE INVENTION This invention relates to US. Pat. application Ser. No. 854,397, filed Sept. 2, 1969, and entitled Rubbing Seal for High Temperature Ceramics.
Rubbing seals having surface layers consisting essentially of uniform mixtures of a glazing material and a matrix material have excellent wear and friction properties when used with ceramics operating at high temperatures. Such surface layers are difficult to prepare, however, and inherently provide a constant amount of glazing material regardless of the wear rate.
The rubbing seal provided by this invention is relatively easy to manufacture and exposes greater amounts of glazing material in those areas having higher wear rates to produce a more stable seal member having a much longer useful life. A seal member of this invention has a high temperature wear coating for rubbing against a relatively moving ceramic member that consists essentially of a plurality of particles having a core of glazing material surrounded by a shell of a metal capable of oxidizing at the operating temperature of the wear coating. The oxide of the metal shell does not abrade the ceramic member but instead wears off when the ceramic regenerator rubs against it to expose the glazing material. Greater amounts of glazing material are exposed in those portions of the seal member having higher wear rates until a balanced wear rate is achieved.
Useful core materials include calcium fluoride, barium fluoride, lithium fluoride, sodium fluoride, molybdenum disulfide, and tungsten selenide. Nickel, copper and cobalt are most useful as the shell materials, although any of the metals having oxides disclosed as useful matrix materials in the aforementioned patent application also can be used.
Coated particles can be made by any of a variety of techniques. Plasma spraying equipment is used to spray the coated particles onto a metal substrate having reasonably compatible thermal expansion properties. Typically substrates are nickel-chromium stainless steels or other high temperature alloys such as lncoloy 600 or 750 sold by International Nickel Co. or l-Iastalloy X sold by Union Carbide Co. Plasma spraying is carried out at a temperature where the metal shells weld themselves to the substrate and to each other to form a cohesive, integral surface layer made up of a substantially continuous matrix formed from the metal shells of the particles that contains a large number of evenly distributed particles of glazing material.
BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is an exploded view of a disc type regenerator assembly for a gas turbine engine showing the relationship of the seal members to the regenerator.
FIG. 2 is a sectional view through one of the seal members.
FIG. 3 is an enlarged sectional view of a portion of the coating showing the final configuration of the particles.
DETAILED DESCRIPTION Referring to FIG. I, the housing of a gas turbine engine contains a substantially circular regenerator portion 10. A diametrical wall 12 separates a substantially circular passage in portion into two semi-circular gas flow passages 14 and 16. Hot exhaust gases flow upward through one of the passages and cooler air flows downward through the other passage in the conventional manner.
A cross arm seal 18 is positioned on top of wall 12 and is surrounded on opposite sides by C- shaped seals 20 and 22. Seals 18, 20 and 22 are held non-rotatably with respect to housing portion 12 by any conventional means (not shown).
A disc shaped ceramic regenerator 24 is positioned rotatably on top of seals 18, 20 and 22. Regenerator 24 is rotated relative to the seals by internal components of the engine. A D-shaped seal 26 is located above regenerator 24 and a cap (not shown) fits on top of housing portion 10 to hold the components in place.
Each of the surfaces of seal members 18, 20, 22 and 26 that rub against regenerator 24 has a coating consisting essentially of a plurality of welded particles 28. The sectional view of FIG. 2 illustrates the particulate coating on top of cross arm seal member 18. Several layers of particles 28 can be applied to each seal member as desired. For best results each coating contains a minimum of the equivalent of at least two or three layers of particles.
Referring also to FIG. 3, each particle consists essentially of a core 30 surrounded by a metal shell 32. Core 30 is a material capable of forming a glaze having a low coefficient of friction when rubbing against ceramic material at the anticipated operating temperature of the seal. Cross arm seal 18 typically operates at a temperature of about l,400 F. and preferably uses particles having cores of calcium fluoride surrounded by nickel shells. The C seal surrounding the passage carrying hot exhaust gases typically operates at about 800 F. and preferably uses particles having cores of lithium fluoride and sodium fluoride surrounded by shells of copper. The other C seal operates typically at a slightly cooler temperature of about 700 F. Its preferred particles have cores of a similar composition. D seal 26 operates at a relatively low temperature of about 600 F. and preferably uses particles having cores of molybdenum disulfide surrounded by shells of cobalt.
Each shell 32 is a metal capable of oxidizing at the operating temperature to an oxide that does not abrade the ceramic material of regenerator 24 but instead wears away under the rubbing action of the regenerator. The particles are plasma sprayed onto the metal substrate of the seal in a manner such that the shells 32 melt or weld together and to the substrate to form a cohesive coating containing a plurality of dispersed cores 30.
During engine operation, the combined effects of temperature and the rubbing action of the regenerator oxidizes the metals of the shells and rubs the oxide away to expose the core materials. The exposed core materials rapidly form a glaze having a low coefficient of friction.
Instead of plasma spraying the particles directly onto the metal substrate, the particles can be fabricated into the form of a separate sheet. The sheet is fastened mechanically by riveting, for example, to a substrate. This technique reduces repair costs and provides some improvement in the thermal shock resistance of the assembly.
Thus this invention provides an effective coating for the rubbing seals of a ceramic regenerator. The coating exposes its cores of glazing material according to the demands of each individual portion of the seal. Because of the composite structure of the coating, it is highly resistant to salt attack brought on by the presence of road salt in the air and gas streams of the engine.
We claim:
1. A high temperature wear coating for rubbing against a ceramic member having relative motion, said wear coating consisting essentially of a plurality of particles having a core of lubricating material surrounded by a shell of a metal capable of oxidizing at the operating temperature of the wear coating, said shells of said particles being welded to each other to form an integral structure having dispersed therein a plurality of said cores, the oxide of said metal shell being non abradable to the ceramic member rubbing a against the coating.
2. The wear coating of claim 1 in which the shell is nickel, copper or cobalt and the core is calcium fluoride, barium fluoride, lithium fluoride, sodium fluoride, molybdenum disulfide, or tungsten selenide.
3. In a gas turbine engine having a ceramic regenerator mounted for rotation relative to an engine housing, a sliding seal for said regenerator comprising a metal substrate having a surface layer attached to one surface for rubbing against said ceramic regenerator, said surface layer comprising a plurality of particles, each of said particles having a core consisting of a glazing material surrounded by a shell of a metal oxidizable at the operating temperature of the coating, said shells being welded to each other to form an integral structure having dispersed therein a plurality of said cores.
4. The engine of claim 3 in which the cores of the particles 5 are calcium fluoride, barium fluoride, lithium fluoride, sodium fluoride, molybdenum disulfide or tungsten selenide.
IF i i
Claims (3)
- 2. The wear coating of claim 1 in which the shell is nickel, copper or cobalt and the core is calcium fluoride, barium fluoride, lithium fluoride, sodium fluoride, molybdenum disulfide, or tungsten selenide.
- 3. In a gas turbine engine having a ceramic regenerator mounted for rotation relative to an engine housing, a sliding seal for said regenerator comprising a metal substrate having a surface layer attached to one surface for rubbing against said ceramic regenerator, said surface layer comprising a plurality of particles, each of said particles having a core consisting of a glazing material surrounded by a shell of a metal oxidizable at the operating temperature of the coating, said shells being welded to each other to form an integral structure having dispersed therein a plurality of said cores.
- 4. The engine of claim 3 in which the cores of the particles are calcium fluoride, barium fluoride, lithium fluoride, sodium fluoride, molybdenum disulfide or tungsten selenide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5230970A | 1970-07-06 | 1970-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3659861A true US3659861A (en) | 1972-05-02 |
Family
ID=21976752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US52309A Expired - Lifetime US3659861A (en) | 1970-07-06 | 1970-07-06 | Particulate coating for the rubbing seal of a gas turbine regenerator |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3659861A (en) |
| DE (1) | DE2131509C3 (en) |
| GB (1) | GB1343930A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2196434A1 (en) * | 1972-08-15 | 1974-03-15 | Nissan Motor | |
| US3907311A (en) * | 1974-04-15 | 1975-09-23 | Ford Motor Co | High temperature, low friction ceramic coating for gas turbine regenerator seals |
| US3917291A (en) * | 1972-04-12 | 1975-11-04 | British Leyland Truck & Bus | Heat exchanger seals |
| US3920410A (en) * | 1971-04-28 | 1975-11-18 | Sherritt Gordon Mines Ltd | Cobalt coated composite powder |
| US3923667A (en) * | 1974-10-29 | 1975-12-02 | Corning Glass Works | High temperature NiO rubbing seal material containing CuO and CaF{HD 2 |
| US3930071A (en) * | 1973-11-14 | 1975-12-30 | Ford Motor Co | Process for coating the rubbing surfaces of the seal of the gas turbine regenerator |
| US4226429A (en) * | 1977-12-15 | 1980-10-07 | Nissan Motor Company, Limited | Fluid seal for use in rotary regenerator |
| US5302450A (en) * | 1993-07-06 | 1994-04-12 | Ford Motor Company | Metal encapsulated solid lubricant coating system |
| US5332422A (en) * | 1993-07-06 | 1994-07-26 | Ford Motor Company | Solid lubricant and hardenable steel coating system |
| US5363821A (en) * | 1993-07-06 | 1994-11-15 | Ford Motor Company | Thermoset polymer/solid lubricant coating system |
| US20040202861A1 (en) * | 2002-09-30 | 2004-10-14 | Tsuyoshi Itsukaichi | Thermal spray powder and process for producing the same as well as method for spraying the same |
| US10400929B2 (en) | 2017-09-27 | 2019-09-03 | Quick Fitting, Inc. | Fitting device, arrangement and method |
| US20190353249A1 (en) * | 2018-05-15 | 2019-11-21 | Dell Products L.P. | Airflow sealing by flexible rubber with i-beam and honeycomb structure |
| CN112296627A (en) * | 2020-10-22 | 2021-02-02 | 苏州美特福自动化科技有限公司 | Bearing gland equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6213820A (en) * | 1985-07-12 | 1987-01-22 | Ngk Insulators Ltd | Ceramic sliding member |
| US4871266A (en) * | 1987-06-24 | 1989-10-03 | Ngk Insulators, Ltd. | Slide assemblies |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3407866A (en) * | 1966-09-01 | 1968-10-29 | Corning Glass Works | Ceramic seals and bearing members |
| US3468699A (en) * | 1966-10-14 | 1969-09-23 | Giannini Scient Corp | Method of providing malleable metal coatings on particles of lubricants |
-
1970
- 1970-07-06 US US52309A patent/US3659861A/en not_active Expired - Lifetime
-
1971
- 1971-05-25 GB GB1682371A patent/GB1343930A/en not_active Expired
- 1971-06-25 DE DE2131509A patent/DE2131509C3/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3407866A (en) * | 1966-09-01 | 1968-10-29 | Corning Glass Works | Ceramic seals and bearing members |
| US3468699A (en) * | 1966-10-14 | 1969-09-23 | Giannini Scient Corp | Method of providing malleable metal coatings on particles of lubricants |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920410A (en) * | 1971-04-28 | 1975-11-18 | Sherritt Gordon Mines Ltd | Cobalt coated composite powder |
| US3917291A (en) * | 1972-04-12 | 1975-11-04 | British Leyland Truck & Bus | Heat exchanger seals |
| FR2196434A1 (en) * | 1972-08-15 | 1974-03-15 | Nissan Motor | |
| US3903959A (en) * | 1972-08-15 | 1975-09-09 | Nissan Motor | Gas turbine engine heat regenerator |
| US3930071A (en) * | 1973-11-14 | 1975-12-30 | Ford Motor Co | Process for coating the rubbing surfaces of the seal of the gas turbine regenerator |
| US3907311A (en) * | 1974-04-15 | 1975-09-23 | Ford Motor Co | High temperature, low friction ceramic coating for gas turbine regenerator seals |
| US3923667A (en) * | 1974-10-29 | 1975-12-02 | Corning Glass Works | High temperature NiO rubbing seal material containing CuO and CaF{HD 2 |
| US4226429A (en) * | 1977-12-15 | 1980-10-07 | Nissan Motor Company, Limited | Fluid seal for use in rotary regenerator |
| US5358753A (en) * | 1993-07-06 | 1994-10-25 | Ford Motor Company | Method of making an anti-friction coating on metal by plasma spraying powder having a solid lubricant core and fusable metal shell |
| US5332422A (en) * | 1993-07-06 | 1994-07-26 | Ford Motor Company | Solid lubricant and hardenable steel coating system |
| US5302450A (en) * | 1993-07-06 | 1994-04-12 | Ford Motor Company | Metal encapsulated solid lubricant coating system |
| US5363821A (en) * | 1993-07-06 | 1994-11-15 | Ford Motor Company | Thermoset polymer/solid lubricant coating system |
| WO1995002023A1 (en) * | 1993-07-06 | 1995-01-19 | Ford Motor Company Limited | Metal encapsulated solid lubricant coating system |
| US5482637A (en) * | 1993-07-06 | 1996-01-09 | Ford Motor Company | Anti-friction coating composition containing solid lubricants |
| US20040202861A1 (en) * | 2002-09-30 | 2004-10-14 | Tsuyoshi Itsukaichi | Thermal spray powder and process for producing the same as well as method for spraying the same |
| EP1411141A3 (en) * | 2002-09-30 | 2005-08-31 | Fujimi Incorporated | Thermal spray powder and process for producing the same as well as method for spraying the same |
| US20070166478A1 (en) * | 2002-09-30 | 2007-07-19 | Tsuyoshi Itsukaichi | Thermal spray powder and process for producing the same as well as method for spraying the same |
| US10400929B2 (en) | 2017-09-27 | 2019-09-03 | Quick Fitting, Inc. | Fitting device, arrangement and method |
| US20190353249A1 (en) * | 2018-05-15 | 2019-11-21 | Dell Products L.P. | Airflow sealing by flexible rubber with i-beam and honeycomb structure |
| US11149853B2 (en) * | 2018-05-15 | 2021-10-19 | Dell Products L.P. | Airflow sealing by flexible rubber with I-beam and honeycomb structure |
| CN112296627A (en) * | 2020-10-22 | 2021-02-02 | 苏州美特福自动化科技有限公司 | Bearing gland equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2131509A1 (en) | 1972-01-20 |
| GB1343930A (en) | 1974-01-16 |
| DE2131509B2 (en) | 1979-06-21 |
| DE2131509C3 (en) | 1980-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3659861A (en) | Particulate coating for the rubbing seal of a gas turbine regenerator | |
| CA1246111A (en) | Abrasive/abradable gas path seal system | |
| US4148494A (en) | Rotary labyrinth seal member | |
| US5976695A (en) | Thermally sprayable powder materials having an alloyed metal phase and a solid lubricant ceramic phase and abradable seal assemblies manufactured therefrom | |
| US4720969A (en) | Regenerator cross arm seal assembly | |
| EP0067746B1 (en) | Abradable rub strip and method of making the same | |
| US3955935A (en) | Ductile corrosion resistant chromium-aluminum coating on superalloy substrate and method of forming | |
| US4269903A (en) | Abradable ceramic seal and method of making same | |
| US5897966A (en) | High temperature alloy article with a discrete protective coating and method for making | |
| US4934254A (en) | Face seal with long-wearing sealing surface | |
| US3918137A (en) | Wear-resistant coating for rotary engine side housing and method of making | |
| US6610416B2 (en) | Material treatment for reduced cutting energy and improved temperature capability of honeycomb seals | |
| JPH0346654B2 (en) | ||
| US4303737A (en) | Coating material | |
| WO1997013884A1 (en) | Method of depositing composite metal coatings | |
| US3747944A (en) | Dry lubricated materials, members and systems with boron nitride and graphite | |
| US5017402A (en) | Method of coating abradable seal assembly | |
| US3746352A (en) | Rubbing seal for high temperature ceramics | |
| FR2406000A1 (en) | ARTICLES IN NICKEL, COBALT AND / OR IRON SUPERALLY COATED, RESISTANT TO OXIDATION AND WEAR | |
| GB2130244A (en) | Forming coatings by hot isostatic compaction | |
| US3903959A (en) | Gas turbine engine heat regenerator | |
| US20100258073A1 (en) | Coated Valve Retainer | |
| JPH0379523B2 (en) | ||
| US3730538A (en) | Rubbing seal for a rotary regenerative heat exchanger | |
| US3646993A (en) | Stabilized nickel oxide seal |