EP0412355B1 - Pistolet-pulvérisateur à flamme de grande vitesse - Google Patents

Pistolet-pulvérisateur à flamme de grande vitesse Download PDF

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Publication number
EP0412355B1
EP0412355B1 EP90114216A EP90114216A EP0412355B1 EP 0412355 B1 EP0412355 B1 EP 0412355B1 EP 90114216 A EP90114216 A EP 90114216A EP 90114216 A EP90114216 A EP 90114216A EP 0412355 B1 EP0412355 B1 EP 0412355B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
gas
injector
flame
spray gun
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.)
Revoked
Application number
EP90114216A
Other languages
German (de)
English (en)
Other versions
EP0412355A1 (fr
Inventor
Erwin Dieter Hühne
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.)
UTP Schweissmaterial GmbH and Co KG
Original Assignee
UTP Schweissmaterial GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6841771&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0412355(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by UTP Schweissmaterial GmbH and Co KG filed Critical UTP Schweissmaterial GmbH and Co KG
Priority to AT90114216T priority Critical patent/ATE96058T1/de
Publication of EP0412355A1 publication Critical patent/EP0412355A1/fr
Application granted granted Critical
Publication of EP0412355B1 publication Critical patent/EP0412355B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a high-speed flame spray gun with water-cooled combustion chamber, injector gas mixing block and expansion nozzle, according to the preamble of claim 1.
  • flame spray guns are known in practice.
  • High-speed flame spray guns have a gas mixing block with a water-cooled combustion chamber and a downstream expansion nozzle.
  • the advantage over conventional flame spray guns is that the fuel gases z. B. acetylene, propane or hydrogen and / or the combustion gases z. B. burn oxygen or air in the water-cooled combustion chamber, resulting in a very strong gas expansion, with the result that the hot gas jet emerging from the water-cooled expansion nozzle has supersonic speed.
  • the injector gas mixing block, the combustion chamber and the connected expansion nozzle are usually made of copper, the surfaces of which are exposed to gas and flame are smoothed to the maximum.
  • the invention is therefore based on the object of providing a high-speed flame spray gun of the type mentioned at the outset, in which no deposits of spray additives and other combustion residues are formed in the region of the combustion chamber.
  • this object is achieved in that the surfaces exposed to gas and flame have a cover layer which has no affinity for the molten spray additive materials and other combustion residues.
  • FIG. 1 shows, among other things, the expansion nozzle 22, the combustion chamber 2, the injector gas mixing block 18 and the cooling water jacket 23 of a high-speed flame spray gun 1.
  • the spray additive in powder form starting from the feed line 24 through the combustion chamber 2.
  • the filler is placed in a molten or melt-plastic state.
  • oxygen flows through the combustion gas supply 4 into the transverse groove 7 through the bore 8 into a radial groove 9 from where it flows through the fuel gas-filled annular groove 13, which acts as an injector gap, via the injector pressure nozzle bore 10.
  • the fuel gas flows via the feed 3 into the transverse groove 12 and flows from here into the annular space 11, which is connected to the annular groove (injector gap) 13.
  • the injector gap 13 is part of the injector system, consisting of an injector pressure nozzle bore 10, an injector gap 13 and an injector mixing nozzle bore 14.
  • the injector system causes a negative pressure to develop in the injector gap, which in this case draws in the fuel gas (so-called Venturi principle in a simplified version).
  • the combustion gas flows at supersonic speed from at least two injector pressure nozzle bores 10 through the annular groove (injector gap) 13 into the injector mixing nozzle bores 14 and thereby sucks fuel gas from the injector gap 13 into the injector mixing nozzle bores 14, where the mixture between fuel and combustion gas takes place.
  • the mixture then enters the combustion chamber 2. Due to the arrangement of the top layer 21 without affinity for the spray additive and the other combustion residues on the end face 17 of the injector gas mixing block 18, on the combustion chamber wall 16, the combustion chamber floor 19 and on the transition area 20 to the expansion nozzle 22, the spray additive material, like the other combustion residues, cannot be contained therein Store or bake the area.
  • Elements are preferably suitable for the cover layer 21 from group VIII of the periodic system, preferably platinum. Furthermore, some members of subgroup I (Ia), namely gold / silver and ceramic layers, for example oxide and carbide ceramic layers.
  • the cover layer 21, for example gold layer, is preferably applied to the finished component and tested for functionality, for example by galvanic processes or by vapor deposition.
  • the layer thickness is preferably 1 to 5 ⁇ .
  • a high-speed flame spray gun is created, with which by means of the arrangement of a coating layer which has no affinity for spray additive materials and other combustion residues on the gas- and flame-exposed surfaces, a deposition and caking of these substances is avoided and thus prevented, and thus the problem that this deposition of the High-speed flame is entrained and thrown or shot onto the substrate, where it creates defects in the spray layer, is avoided and switched off.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Nozzles (AREA)
  • Coating By Spraying Or Casting (AREA)

Claims (3)

  1. Pistolet ultra-rapide de projection de métaux fondus, avec une chambre de combustion (2) refroidie par eau, un bloc mélangeur de gaz d'injection (18) et un buse d'expansion (22),
    caractérisé en ce que les surfaces exposées aux gaz et aux flammes présentent une couche de recouvrement (21) dépourvue d'affinités avec les métaux d'apport de projection en fusion et autres résidus de combustion.
  2. Pistolet ultra-rapide de projection de métaux fondus selon la revendication 1,
    caractérisé en ce que la couche de recouvrement (21) est disposée sur la paroi (16) de la chambre de combustion, le côté frontal (17) du bloc mélangeur de gaz, le fond (19) de la chambre de combustion, et dans la région de transition (20) vers la buse d'expansion (22).
  3. Pistolet ultra-rapide de projection de métaux fondus selon la revendication 1,
    caractérisé en ce qu'au moins une partie de la paroi exposée aux gaz et aux flammes est recouverte de ladite couche.
EP90114216A 1989-08-08 1990-07-25 Pistolet-pulvérisateur à flamme de grande vitesse Revoked EP0412355B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90114216T ATE96058T1 (de) 1989-08-08 1990-07-25 Hochgeschwindigkeitsflammspritzpistole.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8909503U 1989-08-08
DE8909503U DE8909503U1 (de) 1989-08-08 1989-08-08 Hochgeschwindigkeitsflammspritzpistole

Publications (2)

Publication Number Publication Date
EP0412355A1 EP0412355A1 (fr) 1991-02-13
EP0412355B1 true EP0412355B1 (fr) 1993-10-20

Family

ID=6841771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114216A Revoked EP0412355B1 (fr) 1989-08-08 1990-07-25 Pistolet-pulvérisateur à flamme de grande vitesse

Country Status (5)

Country Link
US (1) US5165705A (fr)
EP (1) EP0412355B1 (fr)
AT (1) ATE96058T1 (fr)
DE (2) DE8909503U1 (fr)
ES (1) ES2046614T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016114533A1 (de) 2016-08-05 2018-02-08 Flowserve Flow Control Gmbh Eisenbasierte Legierung zur Herstellung thermisch gespritzter Verschleißschutzschichten

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135166A (en) * 1991-05-08 1992-08-04 Plasma-Technik Ag High-velocity thermal spray apparatus
DE4305896A1 (de) * 1993-02-26 1994-09-01 Utp Schweissmaterial Druckausgleichskammer mit Einsatzelement
US5531590A (en) * 1995-03-30 1996-07-02 Draco Shock-stabilized supersonic flame-jet method and apparatus
US5932293A (en) * 1996-03-29 1999-08-03 Metalspray U.S.A., Inc. Thermal spray systems
US6042019A (en) * 1996-05-17 2000-03-28 Sulzer Metco (Us) Inc. Thermal spray gun with inner passage liner and component for such gun
US5834066A (en) * 1996-07-17 1998-11-10 Huhne & Kunzli GmbH Oberflachentechnik Spraying material feeding means for flame spraying burner
DE102014205343A1 (de) 2014-03-21 2015-09-24 Siemens Aktiengesellschaft Kühlvorrichtung für eine Spritzdüse bzw. Spritzdüsenanordnung mit einer Kühlvorrichtung für das thermische Spritzen
CN112126887B (zh) * 2020-09-14 2022-07-08 水利部杭州机械设计研究所 空气燃气型超音速火焰喷枪、喷涂装置及制备金属陶瓷涂层的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055591A (en) * 1959-07-29 1962-09-25 Metco Inc Heat-fusible material spray equipment
US3112072A (en) * 1962-06-26 1963-11-26 Malone Joseph Striping attachment for metallizing spray gun
US4004735A (en) * 1974-06-12 1977-12-25 Zverev Anatoly Apparatus for detonating application of coatings
US4369748A (en) * 1980-06-20 1983-01-25 Robert Bosch Gmbh Optical engine knock sensing system
US4416421A (en) * 1980-10-09 1983-11-22 Browning Engineering Corporation Highly concentrated supersonic liquified material flame spray method and apparatus
US4358053A (en) * 1980-11-26 1982-11-09 Metco, Inc. Flame spraying device with rocket acceleration
EP0163776A3 (fr) * 1984-01-18 1986-12-30 James A. Browning Procédé de pulvérisation à flamme supersonique de grande concentration et appareil à alimentation améliorée

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016114533A1 (de) 2016-08-05 2018-02-08 Flowserve Flow Control Gmbh Eisenbasierte Legierung zur Herstellung thermisch gespritzter Verschleißschutzschichten
WO2018024763A1 (fr) 2016-08-05 2018-02-08 Flowserve Flow Control Gmbh Alliage ferreux destiné à la réalisation de couches protectrices anti-usure appliquées par voie thermique

Also Published As

Publication number Publication date
ATE96058T1 (de) 1993-11-15
DE59003131D1 (de) 1993-11-25
ES2046614T3 (es) 1994-02-01
DE8909503U1 (de) 1989-09-28
US5165705A (en) 1992-11-24
EP0412355A1 (fr) 1991-02-13

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