EP1925693A2 - Kaltgasspritzverfahren und Vorrichtung dafür - Google Patents

Kaltgasspritzverfahren und Vorrichtung dafür Download PDF

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Publication number
EP1925693A2
EP1925693A2 EP07022932A EP07022932A EP1925693A2 EP 1925693 A2 EP1925693 A2 EP 1925693A2 EP 07022932 A EP07022932 A EP 07022932A EP 07022932 A EP07022932 A EP 07022932A EP 1925693 A2 EP1925693 A2 EP 1925693A2
Authority
EP
European Patent Office
Prior art keywords
powder
nozzle
additional
supersonic
supply means
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.)
Granted
Application number
EP07022932A
Other languages
English (en)
French (fr)
Other versions
EP1925693B1 (de
EP1925693A3 (de
Inventor
Anatoly Pavlovich Alkhimov
Vladimir Federovich Kosarev
Sergey Vladimirovich Klinkov
Victor Vladimirovich Lavrushin
Aleksey Alesandrovich Sova
Bernard Laget
Philippe Bertrand
Igor Smurov
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.)
Ecole Nationale dIngenieurs de Saint Etienne ENISE
Institut De Mecanique Theorique Et Appliquee SA Khristianovich de la Division Siberienne De
Original Assignee
Ecole Nationale dIngenieurs de Saint Etienne ENISE
Institut De Mecanique Theorique Et Appliquee SA Khristianovich de la Division Siberienne De
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 Ecole Nationale dIngenieurs de Saint Etienne ENISE, Institut De Mecanique Theorique Et Appliquee SA Khristianovich de la Division Siberienne De filed Critical Ecole Nationale dIngenieurs de Saint Etienne ENISE
Publication of EP1925693A2 publication Critical patent/EP1925693A2/de
Publication of EP1925693A3 publication Critical patent/EP1925693A3/de
Application granted granted Critical
Publication of EP1925693B1 publication Critical patent/EP1925693B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/02—Coating starting from inorganic powder by application of pressure only
    • C23C24/04—Impact or kinetic deposition of particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/20—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion
    • B05B7/201—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle
    • B05B7/205—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle the material to be sprayed being originally a particulate material

Definitions

  • the invention relates to a method and a device for gasodynamic projection of materials in powder form for use in mechanics and other industrial fields to form functional coatings providing different properties on the treated surfaces.
  • the device includes a pressurized gas source, a powder feeder, a carrier gas heater, an antechamber and a supersonic nozzle.
  • the deposition technology is performed as follows.
  • the gas is injected into the powder feeder and the gas heater where it is heated and then injected into the mixing antechamber.
  • the gas arrives in the supersonic nozzle where it is accelerated to a desired speed.
  • the mixture of gas and powder is fed into the mixing antechamber from which it enters the supersonic nozzle where the particles of powder are accelerated.
  • the powder particles strike the treated surface with a desired speed and concentration and thereby form a deposit.
  • the insufficiency of this technical process is that the powder can be fed only in the subcritical part of the supersonic nozzle. Therefore, the control of flow parameters of the two-phase flow in a wide parametric domain is impossible.
  • Another disadvantage is that, during the deposition of composite coatings (several metallic materials or not), it is impossible to separately feed the components (metal or not) into the supersonic nozzle simultaneously.
  • Composite deposits (metal or not) can only be formed from the mechanical mixtures of different powders prepared for this purpose. Optimum spraying conditions for two or more powders with essentially different properties can not be ensured.
  • He is also known by the document RU 2190695 a device for the gasodynamic projection of powder materials which makes it possible to inject the mixture of gas and powder into the subcritical or supercritical parts of the supersonic nozzle, which makes possible the variation of the parameters of the projection method.
  • the disadvantage of this device is that, as in the previous case, composite coatings can only be formed from mechanical mixtures of different powders prepared in advance. Optimum spraying conditions for different powders can not be ensured at the same time.
  • the device makes it possible to supply different powders consecutively via a single point of powder supply. In this case, only the multilayer coatings can be formed and not the composite coatings with a uniform distribution of components.
  • an object of the present invention is to expand the functional and technological capabilities of a method and apparatus for cold gasodynamic projection of powder materials, including for the deposition of composite coatings in optimal conditions for each powder composing the mixture.
  • the method provides for a main feed of at least one powder material into a supersonic nozzle, its acceleration by a heated gas stream and, simultaneously, at least one additional feed of at least one powder material via at least one an additional feed point at the outlet end of said supersonic nozzle forming a multi-component stream of gas and powder.
  • the invention also relates to a device for cold gasodynamic projection of powder materials
  • a projection module comprising an electric pressure gas heater and a supersonic nozzle having an outlet orifice, connected to the heater outlet and, at the d supplying powder to the supersonic nozzle, a powder supply container whose output is connected to the powder supply point in the supersonic nozzle.
  • the supersonic nozzle comprises a main powder supply means for separately feeding at least two powders and receiving at least one additional means for supplying at least one powder in the supersonic portion of the nozzle.
  • each additional supply means comprises an additional nozzle connected to a powder supply container adapted to be mounted coaxially with the supersonic portion of the nozzle.
  • a first additional supply means is engaged on the outlet orifice of the supersonic nozzle leaving a free space between it and the outer wall of the nozzle forming a circular powder supply duct; the following additional supply means being mounted, leaving a free space with respect to the outer walls of the foregoing additional supply means delimiting a circular supplementary powder supply duct between two consecutive additional supply means.
  • each additional supply means comprises an electric heater and a powder supply container.
  • the additional powder supply means can be moved telescopically with respect to each other and with respect to the supersonic nozzle.
  • the circular powder supply ducts of the additional points are made with transverse sections of different shapes, for example, round, oval, rectangular or slit.
  • the circular powder feed conduits of the additional points are made with a constant cross section.
  • the circular feed pipes of the additional points are made with a variable cross section.
  • the device comprises a control module connected to the electric gas heater compressed by an electric cable.
  • each heater is powered electrically.
  • main supply means are connected to subsonic and / or supersonic parts of the nozzle.
  • the gasodynamic projection method and device of the powdered materials proposed make it possible to create projection conditions that will be optimal simultaneously for two or more powders with substantially different properties.
  • the apparatus for cold gas-flow spraying of powder materials comprises an electric pressure gas heater 1, a supersonic nozzle 2 with an antechamber 3, a carrier gas supply point 4, a main feed point for a powder mixture for supplying the powders separately in a subsonic part 5 and / or a supersonic part 6 of the nozzle, this main supply point being connected to the powder feeders 7 and 8 by means of a flexible pneumatic conduit.
  • the supersonic nozzle 2 comprises additional powder supply means having different properties which create additional feed points 9, 10 in the supersonic portion 6 of the nozzle.
  • the additional points (one or more) 9, 10 are in the form of interchangeable elements which may be additional nozzles which are mounted consecutively and coaxially with the supersonic part 6 of the nozzle so that the first additional point is mounted on the nozzle.
  • outlet orifice of the supersonic nozzle leaving a free space between it and the outer wall of the nozzle and thereby forming a circular conduit 11 powder supply
  • the following points are mounted leaving a free space relative to the outer walls of the preceding points and thereby forming a circular conduit 12 of powder supply between the preceding and the following
  • the additional powder supply points can be moved telescopically relative to each other and by compared to the supersonic nozzle.
  • Circular ducts 11, 12 for feeding powder additional dots are made with cross sections of different shapes, for example, round, oval, rectangular or slot.
  • Each additional powder supply means preferably has an electric heater 13, 14 and a powder supply container 15, 16.
  • the additional powder supply points can be made with constant cross sections or not.
  • the process is carried out as follows.
  • the carrier gas contained in the electric heater 1 is injected into the antechamber 3 of the supersonic nozzle 2 via the carrier gas injection point 4.
  • the desired pressure and temperature of the carrier gas are given in the antechamber 3.
  • the carrier gas reaches a supersonic speed.
  • the mixture of gas and powder is injected into powder feeders 7 and 8 via the main powder supply point for supplying the powders separately in the subsonic portion 5 and / or the supersonic portion 6 of the nozzle 2.
  • the mixtures of different gases and powders are injected into powder supply containers 15, 16. They pass through the electric heaters 13, 14, reach the desired temperature and, via the circular conduits 11, 12 of powder supply. , arrive in the supersonic part of the nozzle. Then, a mixture of turbulent flows is made and, at the outlet of the nozzle, a multi-component flow of gas and powders occurs and is directed to a substrate 17 to form a composite coating.
  • the peculiarities of the structure of the device make it possible to carry out the proposed method, namely the simultaneous injection of the powders with the different properties via the separate powder feed points and, by this, to choose the deposition conditions of composite coatings according to the properties of the powders used.
  • the proposed method a better quality of coatings can be ensured as well as the composite coatings can be formed of powders having essentially different physical and technical properties.
  • additional powder feed points with oval or rectangular cross-sections are used to cover large areas while a deposition on a local spot spot is done using additional powder feed points with round cross sections.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP20070022932 2006-11-27 2007-11-27 Kaltgasspritzverfahren und Vorrichtung dafür Not-in-force EP1925693B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2006141982/02A RU2353705C2 (ru) 2006-11-27 2006-11-27 Способ газодинамического напыления порошковых материалов и устройство для его реализации

Publications (3)

Publication Number Publication Date
EP1925693A2 true EP1925693A2 (de) 2008-05-28
EP1925693A3 EP1925693A3 (de) 2009-02-25
EP1925693B1 EP1925693B1 (de) 2012-06-27

Family

ID=38886894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070022932 Not-in-force EP1925693B1 (de) 2006-11-27 2007-11-27 Kaltgasspritzverfahren und Vorrichtung dafür

Country Status (2)

Country Link
EP (1) EP1925693B1 (de)
RU (1) RU2353705C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008084025A2 (de) 2007-01-09 2008-07-17 Siemens Aktiengesellschaft Verfahren und vorrichtung zum kaltgasspritzen von partikeln unterschiedlicher festigkeit und/oder duktilität

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US9335296B2 (en) 2012-10-10 2016-05-10 Westinghouse Electric Company Llc Systems and methods for steam generator tube analysis for detection of tube degradation
RU2600643C2 (ru) * 2015-03-23 2016-10-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева-КАИ" (КНИТУ-КАИ) Устройство для нанесения покрытий из полимерных порошковых композиций электрогазопламенным способом
US11935662B2 (en) 2019-07-02 2024-03-19 Westinghouse Electric Company Llc Elongate SiC fuel elements
KR102523509B1 (ko) 2019-09-19 2023-04-18 웨스팅하우스 일렉트릭 컴퍼니 엘엘씨 콜드 스프레이 침착물의 현장 접착 테스트를 수행하기 위한 장치 및 사용 방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1674585A1 (en) 1989-10-19 1993-05-15 Inst Teoreticheskoj I Prikladn Apparatus for spraying coverings
RU2190695C2 (ru) 2000-04-20 2002-10-10 Институт теоретической и прикладной механики СО РАН Устройство газодинамического напыления порошковых материалов

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RU2100474C1 (ru) * 1996-11-18 1997-12-27 Общество с ограниченной ответственностью "Обнинский центр порошкового напыления" Устройство для газодинамического нанесения покрытий из порошковых материалов
RU2181788C1 (ru) * 2000-08-08 2002-04-27 Дикун Юрий Вениаминович Способ получения композиционных материалов и покрытий из порошков и устройство для его осуществления
RU2195515C2 (ru) * 2001-03-28 2002-12-27 Общество С Ограниченной Ответственностью Обнинский Центр Порошкового Напыления Способ нанесения покрытий из порошковых материалов
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1674585A1 (en) 1989-10-19 1993-05-15 Inst Teoreticheskoj I Prikladn Apparatus for spraying coverings
RU2190695C2 (ru) 2000-04-20 2002-10-10 Институт теоретической и прикладной механики СО РАН Устройство газодинамического напыления порошковых материалов

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008084025A2 (de) 2007-01-09 2008-07-17 Siemens Aktiengesellschaft Verfahren und vorrichtung zum kaltgasspritzen von partikeln unterschiedlicher festigkeit und/oder duktilität
WO2008084025A3 (de) * 2007-01-09 2009-05-07 Siemens Ag Verfahren und vorrichtung zum kaltgasspritzen von partikeln unterschiedlicher festigkeit und/oder duktilität
US8197895B2 (en) 2007-01-09 2012-06-12 Siemens Aktiengesellschaft Method and device for the cold-gas spraying of particles having different solidities and/or ductilities

Also Published As

Publication number Publication date
RU2006141982A (ru) 2008-06-10
EP1925693B1 (de) 2012-06-27
RU2353705C2 (ru) 2009-04-27
EP1925693A3 (de) 2009-02-25

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