WO2020254371A1 - Dispositif de depot d'un revetement pour la fabrication d'un siege de soupape - Google Patents
Dispositif de depot d'un revetement pour la fabrication d'un siege de soupape Download PDFInfo
- Publication number
- WO2020254371A1 WO2020254371A1 PCT/EP2020/066709 EP2020066709W WO2020254371A1 WO 2020254371 A1 WO2020254371 A1 WO 2020254371A1 EP 2020066709 W EP2020066709 W EP 2020066709W WO 2020254371 A1 WO2020254371 A1 WO 2020254371A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- coating
- cylinder head
- opening
- wall
- Prior art date
Links
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
-
- 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
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/082—Coating starting from inorganic powder by application of heat or pressure and heat without intermediate formation of a liquid in the layer
- C23C24/085—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/087—Coating with metal alloys or metal elements only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
-
- 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
- B05B7/1606—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 the spraying of the material involving the use of an atomising fluid, e.g. air
- B05B7/1613—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 the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
- B05B7/162—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 the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed
- B05B7/1626—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 the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed at the moment of mixing
Definitions
- the invention relates to a device for depositing a coating for
- a cylinder head of a vehicle engine generally comprises a plurality of housings each intended to receive a valve.
- a coating on the wall delimiting each of these housings.
- These housings have a circular opening and the wall delimiting each of these openings is frustoconical in shape.
- the coating must therefore be deposited on a closed frustoconical strip, namely over 360 °. It is important to note that the coating is deposited gradually from one opening to another, and not simultaneously around all the openings of the cylinder head. This is because a valve seat will first be created around an opening, then gradually around the other openings in the cylinder head.
- a device according to the invention makes it possible to deposit a coating around the openings of a cylinder head to manufacture valve seats, while overcoming the drawbacks noted in the processes of the state of the technical.
- the invention relates to a device for depositing a coating on a closed wall of a cylinder head defining an opening intended to receive a valve in order to manufacture a valve seat, said device having an elongated outlet nozzle and capable of diffusing a material constituting the coating by means of at least one hot gas at very high speed.
- the device comprises a means for rotating the nozzle allowing said nozzle to perform at least once a 360 ° rotary movement in order to deposit the coating on the whole of said wall.
- the nozzle is part of the device through which the coating is distributed to form the seat of a valve on the cylinder head of an engine.
- the principle of a device according to the invention is to include a means for rotating the nozzle in order to allow the latter to pivot at least 360 °. In this way, assuming that the cylinder head remains in a fixed position, the nozzle can deposit the coating over the entire wall defining the opening, in order to form a valve seat around an opening in said cylinder head.
- the rotating means is motorized in order to properly control the rotary movement of the nozzle.
- This rotating means can either be directly associated with the nozzle and cause the rotation of only said nozzle, or be associated with the device and cause the rotation of the nozzle by means of a setting. rotation of the device to which said nozzle is secured.
- the device comprises metallic particles and receives a pressurized gas which makes it possible to accelerate said particles at the outlet of the nozzle thanks to the particular shape of said nozzle.
- the nozzle is fixed within the device. The nozzle can perform several successive rotations of 360 °, in order to create the valve seat, after several passes.
- the device comprises a hollow body provided with a heating element capable of heating said at least one gas and to which the nozzle is secured, the rotating element being capable of rotating said body.
- the setting in rotation of the body generates a simultaneous setting in rotation of the nozzle which is fixed to said body.
- the body is cylindrical and the nozzle is inclined relative to the axis of revolution of said body, the rotating element causing the body to rotate about said axis. Thanks to this configuration, the rotation of the device is well controlled since it takes place around the axis of revolution of said body.
- Specifying that the nozzle is inclined relative to the axis of revolution of the body means that the longitudinal axis of the nozzle and said axis of revolution are not parallel. In this way, the nozzle can for example make an angle of 10 °, 45 ° or 90 ° with the axis of revolution of the body.
- a longitudinal axis of the nozzle is inclined by 45 ° relative to the axis of revolution of the body.
- Such a configuration of the device is particularly suitable for depositing a substance on a frustoconical wall of the cylinder head defining a circular opening.
- the gas is high pressure nitrogen. This is an illustrative example particularly suitable for a device according to the invention, and not a limiting example.
- the nozzle is a Laval nozzle.
- a Laval nozzle makes it possible to accelerate the pressurized gas passing through it, and therefore the particles constituting the coating to be deposited.
- the material constituting the coating is powdery and comprises steel particles, nickel alloy particles and copper particles.
- the apparatus comprises a deposition device according to the invention, and a cylinder head support member whose position is fixed when the nozzle is rotated to deposit the coating. It is therefore sufficient to fix the position of the support element carrying the cylinder head, in order to allow a device according to the invention to target a particular opening of said cylinder head, then to rotate the nozzle in order to deposit the coating around it. targeted opening.
- the position of the support member carrying the cylinder head is changed to allow the device to target another opening, and so on.
- the cylinder head support element remains fixed, while the nozzle of the deposition device is rotated to deposit the coating all around the selected opening.
- the distance separating the deposition device and the support element is adjustable so as to adjust the distance separating one end of the nozzle through which the constituent material is diffused of the coating and the wall of the cylinder head intended to receive said coating.
- the apparatus according to the invention is flexible in use, because it can adapt to a particular geometry of the cylinder head and / or valve thanks to an adjustable distance between an opening of the valve and an outlet end of the valve. nozzle.
- Another object of the invention is a method for depositing a coating on a wall of a cylinder head defining an opening intended to receive a valve for manufacturing a valve seat from an apparatus according to the invention. .
- the method comprises the following steps,
- the coating is completely deposited after several 360 ° rotations of the nozzle.
- a deposition device has the advantage of operating with control and precision, while remaining simple in design. It also has the advantage of being a constant footprint compared to existing devices, while being more efficient than them.
- FIG. 1 is a schematic side view of a deposition device according to
- FIG. 2 is a schematic and enlarged side view of an area of Figure 1 grouping one end of the outlet nozzle of a device according to the invention, and of a cylinder head placed on a support member.
- a device 1 for depositing a coating on a cylinder head 2 of a vehicle engine for the purpose of manufacturing a valve seat 3, schematically comprises a supply assembly 4, a body 5 and a nozzle 6 comprising a nozzle 7.
- the supply assembly 4 comprises an inlet pipe 8 for a mixture of powders, an inlet pipe 9 for high pressure nitrogen, at least one pipe 10 for the arrival of a cooling liquid and a rotating joint 11, said assembly 4 being placed upstream of the body 5.
- the powder mixture is preferably composed of a steel powder, a powder of a hard nickel alloy and a powder of copper. These three powders constitute the material which will be deposited on the cylinder head 2 in the form of a coating to obtain a valve seat by means of a device 1 according to the invention.
- the body 5 of the device 1 is hollow and is preferably shaped
- This body 5 is mounted to rotate about its axis of revolution 12, by means of a motorized rotary means ensuring the rotation of said body 5 and in particular controlling its amplitude of rotation.
- the inlet pipe 8 for the powder mixture passes through the body 5 and part of the nozzle 6 until it emerges upstream from the nozzle 7 in an orifice thereof.
- the powder leaving the inlet duct 8 can therefore only pass through the nozzle 7.
- the high pressure nitrogen which has been previously heated in the body 5, will help to circulate the powder in the nozzle 7, the geometry of which is particular will accelerate said powder exiting said nozzle 7 at a very high speed.
- the end piece 6 is a hollow part having a first rectilinear segment 15, extended by a second rectilinear segment 16 which is inclined relative to said first segment 15.
- the cross section of the first segment 15 is at least twice as high as the cross section of the second segment 16 and corresponds to the cross section of the body 5.
- the second segment 16 ends with a cylindrical and enlarged flange 17, which is inclined relative to a longitudinal axis of said second segment 16.
- the nozzle 7, which is an elongated cylindrical part originates at the level of this collar 17 so that the axis of revolution of said collar 17 and the axis of revolution of said nozzle 7 are perfectly coincident.
- the first segment 15 and the second segment 16 are cylindrical in shape.
- the nozzle 7 is a Laval nozzle, having an internal channel of which an upstream part 18 is convergent and of which a downstream part 19 extending said upstream part 18 is divergent.
- the upstream part 18 forms the orifice of the nozzle 7 into which the powder inlet channel 8 emerges.
- the upstream part 18 and the downstream part 19 extend in the same direction, the downstream part 19 being more elongated than the upstream part 18.
- the tip 6 is fixed to the body 5, so that the first segment 15 of said tip 6 extends said body 5.
- the body 5 is extended by the first segment 15, which is itself extended by the second segment 16, said second segment 16 ending in the nozzle 7.
- the second segment 16 extends parallel to the axis of revolution 12 of the body 5, being offset from said axis 12, the first segment 15 and the nozzle 7 being inclined with respect to said second segment 16.
- the end piece 6 is a part U-shaped.
- a longitudinal axis of the nozzle 7 preferably forms an angle of 45 ° with the axis of revolution 12 of the body 5.
- the intermediary of the motorized rotary means causes a simultaneous rotation of the nozzle 6 which is secured to said body 5, and therefore a simultaneous rotation of the nozzle 7 which is an integral part of said nozzle 6.
- the cylinder head 2 is supported by a support member 20 which is separate from the deposit device 1. In this way, the rotation of the deposition device 1 has no influence on the positioning of the support element 20 and vice versa.
- the support member 20 has an adjustable position, allowing the position of the cylinder head 2 to be adjusted relative to the deposition device 1.
- the cylinder head 2 schematically has several circular openings 14, each intended to receive a valve. Each opening 14 is associated with a valve guide 25 and is delimited by a frustoconical wall 21, intended to receive the coating diffused by the deposition device 1, in order to manufacture a valve seat 3. Thanks to the adjustable position of the support element 20, it is possible to adjust the distance separating the end 23 of the nozzle 7 through which the coating will exit and the frustoconical wall 21 delimiting an opening 14 of the cylinder head 2 and intended to receive the coating.
- the invention comprises the following steps:
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating Apparatus (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020227002037A KR20220024789A (ko) | 2019-06-19 | 2020-06-17 | 밸브 시트의 제작을 위한 코팅을 퇴적시키기 위한 장치 |
EP20733277.6A EP3987075A1 (fr) | 2019-06-19 | 2020-06-17 | Dispositif de depot d'un revetement pour la fabrication d'un siege de soupape |
JP2021574806A JP2022537290A (ja) | 2019-06-19 | 2020-06-17 | バルブシート製造のためのコーティングを堆積させるデバイス |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR1906599 | 2019-06-19 | ||
FR1906599A FR3097561B1 (fr) | 2019-06-19 | 2019-06-19 | Dispositif de dépôt d'un revêtement pour la fabrication d'un siège de soupape |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020254371A1 true WO2020254371A1 (fr) | 2020-12-24 |
Family
ID=67957112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2020/066709 WO2020254371A1 (fr) | 2019-06-19 | 2020-06-17 | Dispositif de depot d'un revetement pour la fabrication d'un siege de soupape |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3987075A1 (fr) |
JP (1) | JP2022537290A (fr) |
KR (1) | KR20220024789A (fr) |
FR (1) | FR3097561B1 (fr) |
WO (1) | WO2020254371A1 (fr) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0843022A1 (fr) * | 1996-11-14 | 1998-05-20 | Ford Global Technologies, Inc. | Siège de soupape revêtu d'un couche adhérente |
EP1304396A1 (fr) * | 2001-10-19 | 2003-04-23 | Bayerische Motoren Werke Aktiengesellschaft | Poudre en alliage pour revetement et procede de formation de ce revetement |
EP1902785A1 (fr) * | 2006-09-25 | 2008-03-26 | Peugeot Citroën Automobiles S.A. | Dispositif de projection de particules solides à froid |
FR2971260A1 (fr) * | 2011-02-03 | 2012-08-10 | Peugeot Citroen Automobiles Sa | Procede de revetement d'un fut de carter cylindres par deplacement du cylindre le long de l'axe du fut, vehicule et machine correspondants |
US20180214993A1 (en) * | 2017-02-02 | 2018-08-02 | Toyota Jidosha Kabushiki Kaisha | Wear-resistant member and wear-resistant member production method |
US20180272472A1 (en) * | 2017-03-22 | 2018-09-27 | Toyota Jidosha Kabushiki Kaisha | Method of producing clad layer and device for producing the same |
-
2019
- 2019-06-19 FR FR1906599A patent/FR3097561B1/fr active Active
-
2020
- 2020-06-17 EP EP20733277.6A patent/EP3987075A1/fr active Pending
- 2020-06-17 JP JP2021574806A patent/JP2022537290A/ja active Pending
- 2020-06-17 KR KR1020227002037A patent/KR20220024789A/ko unknown
- 2020-06-17 WO PCT/EP2020/066709 patent/WO2020254371A1/fr unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0843022A1 (fr) * | 1996-11-14 | 1998-05-20 | Ford Global Technologies, Inc. | Siège de soupape revêtu d'un couche adhérente |
EP1304396A1 (fr) * | 2001-10-19 | 2003-04-23 | Bayerische Motoren Werke Aktiengesellschaft | Poudre en alliage pour revetement et procede de formation de ce revetement |
EP1902785A1 (fr) * | 2006-09-25 | 2008-03-26 | Peugeot Citroën Automobiles S.A. | Dispositif de projection de particules solides à froid |
FR2971260A1 (fr) * | 2011-02-03 | 2012-08-10 | Peugeot Citroen Automobiles Sa | Procede de revetement d'un fut de carter cylindres par deplacement du cylindre le long de l'axe du fut, vehicule et machine correspondants |
US20180214993A1 (en) * | 2017-02-02 | 2018-08-02 | Toyota Jidosha Kabushiki Kaisha | Wear-resistant member and wear-resistant member production method |
US20180272472A1 (en) * | 2017-03-22 | 2018-09-27 | Toyota Jidosha Kabushiki Kaisha | Method of producing clad layer and device for producing the same |
Also Published As
Publication number | Publication date |
---|---|
EP3987075A1 (fr) | 2022-04-27 |
FR3097561A1 (fr) | 2020-12-25 |
JP2022537290A (ja) | 2022-08-25 |
KR20220024789A (ko) | 2022-03-03 |
FR3097561B1 (fr) | 2023-05-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1553282A1 (fr) | Dispositif d'alimentation en air de refroidissement de volets de tuyère | |
EP2007541A1 (fr) | Support dit orbital comprenant au moins deux pièces en forme de segment de cercle raccordables l'une à l'autre; dispositif de soudage bout à bout de conduits pour former une canalisation de type pipeline comprenant un tel support orbital | |
WO2008145846A2 (fr) | Organe de pulverisation, dispositif de projection comportant un tel organe, installation de projection et methode de nettoyage d'un tel organe | |
EP1902785A1 (fr) | Dispositif de projection de particules solides à froid | |
CH663964A5 (fr) | Appareil d'alimentation en poudre pour dispositif de pulverisation thermique. | |
WO2020254371A1 (fr) | Dispositif de depot d'un revetement pour la fabrication d'un siege de soupape | |
FR3037511A1 (fr) | Dispositif de revetement d'un carter annulaire de turbomachine | |
FR2638502A1 (fr) | Vanne a disques pour permettre ou non le passage du fluide | |
EP0293331A2 (fr) | Outillage d'extrusion pour le dépôt d'une gaine de matière plastique sur un fil | |
EP0211295B1 (fr) | Procédé et dispositif d'injection, par voie pneumatique, de quantités dosées de matières pulvérulentes dans une enceinte se trouvant sous pression variable | |
EP1055080A1 (fr) | Dispositif et procede de montage d'une selle sur une canalisation et robinet correspondant | |
EP1925693A2 (fr) | Méthode de projection gazodynamique à froid des matériaux en poudre et équipement pour sa mise en oeuvre | |
FR2854086A1 (fr) | Procede de revetement par flamme et dispositif correspondant | |
FR3025884A1 (fr) | Bras radial de mesure de valeurs representatives d'ecoulement pour turbomachine | |
EP1641567B1 (fr) | Buse de diffusion de poudre pour un dispositif de poudrage electrostatique a jet oriente | |
FR3083286A1 (fr) | Vanne pourvue d'un organe de stabilisation solidaire du volet et ligne d'echappement equipee d'une telle vanne | |
FR2828547A3 (fr) | Soupape de securite a double fonction | |
FR2532031A3 (fr) | Soupape de passage ou a melanges comportant un guidage rectiligne precis a glissement de la tige de soupape | |
FR2924058A1 (fr) | Diffuseur d'air pour habitacle de vehicule automobile | |
EP2017529B1 (fr) | Brûleur | |
FR3084731A1 (fr) | Chambre de combustion pour une turbomachine | |
EP0133390A1 (fr) | Buse de pulvérisation à fente réglable pour liquide ou produit pâteux | |
FR2880119A1 (fr) | Dispositif de simulation d'un moteur | |
FR3050999A3 (fr) | Dispositif de passivation des surfaces des tubes de grande longueur lors de chauffage par induction | |
EP3368269A1 (fr) | Dispositif d'extrusion d'une bande de matériau élastomère et procédé de réalisation d'un revêtement de protection thermique d'un corps de propulseur |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20733277 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2021574806 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20227002037 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2020733277 Country of ref document: EP Effective date: 20220119 |