DE2413382A1 - Hot-sprayed metal coatings contg. solid lubricant - for gliding contact to prevent seizure of rotors etc. in turbines - Google Patents

Hot-sprayed metal coatings contg. solid lubricant - for gliding contact to prevent seizure of rotors etc. in turbines

Info

Publication number
DE2413382A1
DE2413382A1 DE2413382A DE2413382A DE2413382A1 DE 2413382 A1 DE2413382 A1 DE 2413382A1 DE 2413382 A DE2413382 A DE 2413382A DE 2413382 A DE2413382 A DE 2413382A DE 2413382 A1 DE2413382 A1 DE 2413382A1
Authority
DE
Germany
Prior art keywords
solid lubricant
protective coating
metal
hot
turbines
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.)
Ceased
Application number
DE2413382A
Other languages
German (de)
Inventor
Eggert Dipl Ing Tank
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE2413382A priority Critical patent/DE2413382A1/en
Publication of DE2413382A1 publication Critical patent/DE2413382A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
    • F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

Hot-sprayed, gliding contact, protective coating for the surfaces of components moving at high relative velocity towards each other, esp. rotors and/or housing or similar parts of turbines or turbo-compressors, where the protective coating consists of a composite material made from a hot-sprayed metal and a solid lubricant. The novelty is that the solid lubricant consists of a metal salt which is insol. in water, or a mixt. of at least two different metal slats of this type. The metal salts are pref. chosen from the fluorides, borates or phosphates of one of the metals: Li, Mg, Ca, Sr, Ba, Al, Zn or Mn, esp. CaF2 used with hot-sprayed magnesium or aluminium; or with other metals for higher temps. To prevent seizure, e.g. of rotor blades in a housing.

Claims (1)

Daini Io 172/4Daini Io 172/4 AnsprücheExpectations 1·JThermiech aufgespritzter Derührungs-Gleitechutzüborzug ^—S für mit hoher Relativgeschvrindigkeit gegeneinander bewegte Bauteiloberflächen, insbesondere für Rotoren und/oder Gehäuse od. dgl. von Turbinen oder Turbokompressoren, wobei der Schutzüberzug aus einem Verbundwerkstoff aus thermisch spritzbarem Metall und Feat- «chmieratoff besteht, dadurch gekennz e i c h η e t , daß als Festschmierstoff ein wasserunlösliches Metallsalz oder eine Mischung aus wenigstens zwei verschiedenen solcher Metallsalze verwendet wird.1 · JThermiech sprayed-on Derührungs-Gleitechutzüborzug ^ - S for component surfaces moving against each other at high relative speed, in particular for rotors and / or housings or the like of turbines or turbo compressors, the protective coating consisting of a composite material of thermally sprayable metal and lubricant , characterized in that a water-insoluble metal salt or a mixture of at least two different such metal salts is used as the solid lubricant. 2. Schutzüberzug nach Anspruch 1, d a du r c h gekennzeichnet, daß die Metallsalze aus folgenden Verbindungen ausgewählt sind: Fluoride, Dorato oder Phosphate eines der Metalle Lithium, Magnesium, Calcium, Strontium, Barium, Aluminium, Zink oder Mangan.2. Protective coating according to claim 1, d a du r c h characterized in that the metal salts are selected from the following compounds: fluoride, dorato or phosphates of one of the metals lithium, magnesium, calcium, strontium, barium, aluminum, zinc or manganese. 3· Schutzüberzug nach Anspruch 1 oder 2, dadurch g e k e η η ζ e i c h η e t , daß als Festschmierstoff Calciumfluorid vorzugsweise zu 2o % des Gewichtes des Verbundwerkstoffes verwendet wird oder daß der Festschmierstoff Calciumfluorid enthält.3 · Protective cover according to claim 1 or 2, characterized g e k e η η ζ e i c h η e t that as a solid lubricant Calcium fluoride is preferably used to 20% of the weight of the composite material or that the solid lubricant contains calcium fluoride. h. Schutzüberzug nach einem der Ansprüche 1 bis 3 für Bauteiltemperaturen bis etwa 35o °C, dadurch gekennzeichnet , daß als thermisch spritzbare· Metall Magnesium oder Aluminium verwendet wird. H. Protective coating according to one of Claims 1 to 3 for component temperatures up to about 35o ° C, characterized in that magnesium or aluminum is used as the thermally sprayable metal. - 12 -- 12 - 5. Schutzüberzug nach einem der Ansprüche 1 bis 3 für Deuteiltemperaturen zwischen etwa 25° und 55° C, dadurch gekennzeichnet, daß als thermisch spritzbares Metall Aluminium, Nickel oder rostfreie Eisenlegierungen verwendet werden.5. Protective coating according to one of claims 1 to 3 for partial temperatures between about 25 ° and 55 ° C, characterized in that as thermal sprayable metal aluminum, nickel or rustproof iron alloys can be used. . Schutzüberzug nach einem der Ansprüche 1 bis 3 für BaIiteiltemperaturcn zwischen etwa 55° bis looo C1 dadurch gekennzeichnet , daß als thermisch spritzbares Metall Nickel und/oder Nickellegierungen enthaltend wenigstens eine der folgenden Legierungs-. Protective coating according to one of Claims 1 to 3 for component temperatures between about 55 ° to 10000 C 1, characterized in that the thermally sprayable metal is nickel and / or nickel alloys containing at least one of the following alloying 4bestandteile( verwendet werden: Chrom, Kobalt, Aluminium, Titan, Molybdän. 4 components ( used: chrome, cobalt, aluminum, titanium, molybdenum. COQR IR 1/iU74COQR IR 1 / iU74
DE2413382A 1974-03-20 1974-03-20 Hot-sprayed metal coatings contg. solid lubricant - for gliding contact to prevent seizure of rotors etc. in turbines Ceased DE2413382A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2413382A DE2413382A1 (en) 1974-03-20 1974-03-20 Hot-sprayed metal coatings contg. solid lubricant - for gliding contact to prevent seizure of rotors etc. in turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2413382A DE2413382A1 (en) 1974-03-20 1974-03-20 Hot-sprayed metal coatings contg. solid lubricant - for gliding contact to prevent seizure of rotors etc. in turbines

Publications (1)

Publication Number Publication Date
DE2413382A1 true DE2413382A1 (en) 1975-12-18

Family

ID=5910631

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2413382A Ceased DE2413382A1 (en) 1974-03-20 1974-03-20 Hot-sprayed metal coatings contg. solid lubricant - for gliding contact to prevent seizure of rotors etc. in turbines

Country Status (1)

Country Link
DE (1) DE2413382A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924434A1 (en) * 1989-07-24 1991-01-31 Freudenberg Carl Fa Ferro-fluid seal for shaft in bore - consists of ring magnet fixed tightly in outer ring of polyamide or polypropylene where radial width of magnet exceeds its thickness
DE3936429A1 (en) * 1989-11-02 1991-05-08 Rohs Ulrich Sealing gap in pump or compressor - involves use of fibre materials to form flocculation zones
EP0487273A1 (en) * 1990-11-19 1992-05-27 Sulzer Plasma Technik, Inc. Thermal spray powder
EP2752393A1 (en) * 2013-01-02 2014-07-09 IPGR International Partners in Glass Research Device for handling hot melted glass and method for making such a device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924434A1 (en) * 1989-07-24 1991-01-31 Freudenberg Carl Fa Ferro-fluid seal for shaft in bore - consists of ring magnet fixed tightly in outer ring of polyamide or polypropylene where radial width of magnet exceeds its thickness
DE3936429A1 (en) * 1989-11-02 1991-05-08 Rohs Ulrich Sealing gap in pump or compressor - involves use of fibre materials to form flocculation zones
EP0487273A1 (en) * 1990-11-19 1992-05-27 Sulzer Plasma Technik, Inc. Thermal spray powder
EP2752393A1 (en) * 2013-01-02 2014-07-09 IPGR International Partners in Glass Research Device for handling hot melted glass and method for making such a device
WO2014106613A1 (en) * 2013-01-02 2014-07-10 Ipgr International Partners In Glass Research Device for handling hot melted glass and method for making such a device

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Legal Events

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OD Request for examination
8131 Rejection