EP1135538A1 - Verfahren und vorrichtung zum thermischen spritzen zur beschichtung von oberflächen - Google Patents
Verfahren und vorrichtung zum thermischen spritzen zur beschichtung von oberflächenInfo
- Publication number
- EP1135538A1 EP1135538A1 EP99953958A EP99953958A EP1135538A1 EP 1135538 A1 EP1135538 A1 EP 1135538A1 EP 99953958 A EP99953958 A EP 99953958A EP 99953958 A EP99953958 A EP 99953958A EP 1135538 A1 EP1135538 A1 EP 1135538A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- plasma arc
- atomizing gas
- melting
- plasma
- 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
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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
Definitions
- the invention relates to a method and a device for thermal spraying, in particular of metals, for coating surfaces, the material used for the coating being supplied, melted and sprayed in the form of a wire.
- hand-operated spray guns are known in which two wires are brought together at an angle to one another in front of an atomizing gas nozzle via feed devices, an arc melting the wires being generated between the wire tips.
- the object of the invention is to provide a method and a device for spraying metallic wire without destroying at least one of the electrodes.
- a high level of efficiency, a low noise level and easy handling should be guaranteed.
- this object is achieved according to the invention in that the melting energy is generated by a plasma arc, the arc burning between a non-melting, fixed electrode and a melting electrode in the form of the wire, and that melted material is sprayed in the wire running direction.
- Burning heads with a plasma arc are known per se as cutting heads to be used for cutting metal sheets, which work with compressed air.
- this arc plasma cutting the thermal energy and the kinetic energy of an ioinized gas column (plasma) are used to melt the metal and displace it from the kerf.
- the invention makes use of this property in that the plasma arc is a compressed air plasma arc and a wire for atomization is fed to such a plasma cutting head.
- the arc preferably burns between a non-melting, fixed electrode and a melting wire. The melted material is sprayed in the wire running direction.
- the plasma arc is first ignited between the two electrodes. An electrically conductive wire acts as an electrode. After the ignition, the consumed wire is fed.
- the burner head is designed as a compressed air plasma arc burner.
- the feed nozzle of the wire with the atomizing gas is expediently arranged at an angle to the central axis of the plasma torch, the angle between the wire feed and the plasma torch central axis being approximately 75 °, for example.
- the atomizing gas nozzle expediently surrounds the central wire feed in a ring.
- an inert gas plasma torch is assigned to the atomizing gas nozzle and / or that a non-metallic wire can be assigned to the atomizing gas nozzle for melting and spraying.
- the particular advantage of the invention is, inter alia, that a higher melting rate can be achieved, the application efficiency can be increased by at least 10%, the dust formation and the material evaporation being reduced.
- At least two burner heads with associated wire feed and atomizing gas nozzles are provided. It is possible to feed different materials to the different burner heads and then to apply the material mixture to the surface to be coated.
- FIG. 1 A simplified representation of a device according to the invention and in
- FIG. 2 shows an enlarged sectional view of the head configuration of the device according to the invention.
- the device generally designated 1, consists of a spray gun housing 2 with a handle 3 as an actuation switch 4, the housing 2 being associated with a spray wire feed head 5 and a compressed air plasma burning head 6, whose In the example shown, central axes form an angle of 75 ° to one another.
- the plasma burning head 6 is assigned a hose package 7, only indicated, with a power supply and compressed air supply, while a supply hose 8 for the wire designated 9 is assigned to the wire feed head.
- the compressed air is supplied via the housing 2, as can be seen in particular from FIG. 2.
- the wire 9 emerges from the front of the atomizing gas nozzle denoted by 10 and is melted in a plasma arc denoted by 11 and thrown onto a surface (not shown) by means of the atomizing gas as a spray jet 12.
- Fig. 2 the wire to be melted itself is not shown, just a wire guide channel 13 which passes through the atomizing gas nozzle 10 centrally.
- the atomizing gas is supplied via the housing 2 via appropriate channels 14 to an annular chamber 15 which in turn surrounds the feed channel 13 for the wire essentially centrally.
- An electrode 16 with a Zr / Hf insert 17 is located in the plasma burning head 6, a central compressed air supply 18 being provided here as well, which is surrounded by insulating elements 19.
- Control devices are not shown, which ensure, for example, that the compressed air supply for the plasma torch 6 and the compressed air supply for the formation of the atomizing gas jet can be set differently.
- the described embodiment of the invention can be modified in many ways without departing from the basic idea.
- the arc can not only be formed between the burner as a cathode and, for example, the spray wire as an anode, the arc can also be formed within the burner between a cathode and an anode, with electrically non-conductive wires e.g. plastic-coated oxide powder cored wires can be processed.
- electrically non-conductive wires e.g. plastic-coated oxide powder cored wires can be processed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Nozzles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Plasma Technology (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29819453U DE29819453U1 (de) | 1998-10-31 | 1998-10-31 | Vorrichtung zum thermischen Spritzen zur Beschichtung von Oberflächen |
DE29819453U | 1998-10-31 | ||
PCT/EP1999/008247 WO2000026429A1 (de) | 1998-10-31 | 1999-10-29 | Verfahren und vorrichtung zum thermischen spritzen zur beschichtung von oberflächen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1135538A1 true EP1135538A1 (de) | 2001-09-26 |
EP1135538B1 EP1135538B1 (de) | 2003-10-08 |
Family
ID=8064680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99953958A Expired - Lifetime EP1135538B1 (de) | 1998-10-31 | 1999-10-29 | Verfahren und vorrichtung zum thermischen spritzen zur beschichtung von oberflächen |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP1135538B1 (de) |
AT (1) | ATE251678T1 (de) |
AU (1) | AU1044600A (de) |
DE (2) | DE29819453U1 (de) |
DK (1) | DK1135538T3 (de) |
ES (1) | ES2204168T3 (de) |
NO (1) | NO331815B1 (de) |
PL (1) | PL190514B1 (de) |
PT (1) | PT1135538E (de) |
WO (1) | WO2000026429A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015197870A1 (de) | 2014-06-27 | 2015-12-30 | Wolfgang Schwarz | Galvanisches anoden-system für den korrosionsschutz von stahl in beton |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10043295C1 (de) * | 2000-09-02 | 2002-04-25 | Rheinzink Gmbh | Heliothermischer Flachkollektor-Modul |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB959027A (en) * | 1959-09-14 | 1964-05-27 | British Oxygen Co Ltd | Apparatus and process for spraying molten metal |
DE2002472A1 (de) * | 1970-01-21 | 1971-07-29 | Afam Arbeitsgruppe Fuer Angewa | Verfahren zum thermischen Spritzen von gefuellten Roehrchendraehten zum Herstellen beliebig legierter und gemischter metallischer und metallkeramischer Spritzschichten |
CS150108B1 (de) * | 1970-09-04 | 1973-09-04 | ||
FR2148811A5 (de) * | 1971-08-04 | 1973-03-23 | Commissariat Energie Atomique | |
US5109150A (en) * | 1987-03-24 | 1992-04-28 | The United States Of America As Represented By The Secretary Of The Navy | Open-arc plasma wire spray method and apparatus |
US4970091A (en) * | 1989-10-18 | 1990-11-13 | The United States Of America As Represented By The United States Department Of Energy | Method for gas-metal arc deposition |
DE4409002A1 (de) * | 1994-03-16 | 1994-09-01 | Arnim Wirth | Verfahren zum Auftragen pulver- u. drahtförmiger Werkstoffe mit nicht auf das Werkstück übertragenem Plasmalichtbogen |
US5796064A (en) * | 1996-10-29 | 1998-08-18 | Ingersoll-Rand Company | Method and apparatus for dual coat thermal spraying cylindrical bores |
-
1998
- 1998-10-31 DE DE29819453U patent/DE29819453U1/de not_active Expired - Lifetime
-
1999
- 1999-10-29 PT PT99953958T patent/PT1135538E/pt unknown
- 1999-10-29 AU AU10446/00A patent/AU1044600A/en not_active Abandoned
- 1999-10-29 EP EP99953958A patent/EP1135538B1/de not_active Expired - Lifetime
- 1999-10-29 WO PCT/EP1999/008247 patent/WO2000026429A1/de active IP Right Grant
- 1999-10-29 DK DK99953958T patent/DK1135538T3/da active
- 1999-10-29 PL PL99347364A patent/PL190514B1/pl unknown
- 1999-10-29 AT AT99953958T patent/ATE251678T1/de active
- 1999-10-29 ES ES99953958T patent/ES2204168T3/es not_active Expired - Lifetime
- 1999-10-29 DE DE59907320T patent/DE59907320D1/de not_active Expired - Lifetime
-
2001
- 2001-04-25 NO NO20012025A patent/NO331815B1/no not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0026429A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015197870A1 (de) | 2014-06-27 | 2015-12-30 | Wolfgang Schwarz | Galvanisches anoden-system für den korrosionsschutz von stahl in beton |
Also Published As
Publication number | Publication date |
---|---|
NO331815B1 (no) | 2012-04-10 |
DK1135538T3 (da) | 2004-02-16 |
EP1135538B1 (de) | 2003-10-08 |
DE59907320D1 (de) | 2003-11-13 |
ES2204168T3 (es) | 2004-04-16 |
PL347364A1 (en) | 2002-04-08 |
AU1044600A (en) | 2000-05-22 |
NO20012025L (no) | 2001-04-25 |
PT1135538E (pt) | 2004-02-27 |
NO20012025D0 (no) | 2001-04-25 |
PL190514B1 (pl) | 2005-12-30 |
WO2000026429A1 (de) | 2000-05-11 |
DE29819453U1 (de) | 1999-01-14 |
ATE251678T1 (de) | 2003-10-15 |
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