EP1692922A1 - Plasmaspritzvorrichtung - Google Patents
PlasmaspritzvorrichtungInfo
- Publication number
- EP1692922A1 EP1692922A1 EP04761956A EP04761956A EP1692922A1 EP 1692922 A1 EP1692922 A1 EP 1692922A1 EP 04761956 A EP04761956 A EP 04761956A EP 04761956 A EP04761956 A EP 04761956A EP 1692922 A1 EP1692922 A1 EP 1692922A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- spraying device
- plasma spraying
- burner head
- lines
- 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
- 238000007750 plasma spraying Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000012809 cooling fluid Substances 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004563 wettable powder Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3423—Connecting means, e.g. electrical connecting means or fluid connections
Definitions
- the invention relates to a plasma spray device designed according to the preamble of claim 1.
- a plasma spraying device with an exchangeable burner head, which is connected to the burner shaft by means of plug connections, is known, for example, from EP 585 203.
- the object of the invention is now to propose a plasma spray device designed according to the preamble of claim 1, in which the lines between the burner shaft and the burner head can be connected safely and reliably, in particular in the case of the lines receiving the cooling medium, a tight connection should be ensured , while the lowest possible contact resistance is in the foreground for the lines provided for the transmission of the electrical energy, and in particular the number of lines should also be optimized.
- the basic idea of the invention is to provide tubular lines between the burner shaft and the burner head, by means of which Both the cooling medium required to cool the burner head and the electrical energy required to generate an arc can be transmitted, the said tubular lines each being provided with a mechanically separable interface which provides a positive and non-positive connection between the respective line of the burner shaft and the corresponding line section of the burner head guaranteed.
- a mechanically separable interface which ensures a positive and non-positive connection between the respective lines, can on the one hand ensure a hydraulically sealed connection between the lines. On the other hand, this creates an interface with low electrical contact resistance, which ensures safe, permanent and reliable power transmission even under difficult conditions, such as oxidized or contaminated contact points.
- FIG. 1 shows, in a partially schematic representation, the front part of the burner shaft 1 and the entire burner head 2 in a longitudinal section, the features which are essential in connection with the invention being dealt with below.
- the burner shaft 1 serves to supply the operating resources necessary for the operation of the burner head 2.
- the term operating equipment means both the media to be fed to the burner head, such as cooling liquid and plasma gas, but also the electrical energy, the coating powder and, if appropriate, protective gas, this list not to be regarded as exhaustive.
- the burner head 2 essentially consists of a rear cathode body 3, a front anode body 4 and an interposed insulating washer 5, which projects radially beyond the cathode body 3 and the anode body 4 and electrically insulates the two bodies 3, 5 from one another.
- An electrode acting as a cathode 6 is let into the cathode body 3, while the anode body 4 is provided with an electrode acting as an anode 7.
- the cathode 6 is essentially cylindrical, while the anode 7 is hollow-cylindrical and at the same time forms the nozzle from which the plasma jet emerges.
- Both the cathode body 3 and the anode body 4 consist of a metal with good electrical and good thermal conductivity.
- An annular cooling channel 8, 9 is embedded in both the cathode body 3 and the anode body 4. These two cooling channels 8, 9 are each provided with an inlet and an outlet, to each of which a tubular line section 11, 12 is soldered.
- the respective line section 11, 12 is provided at the end with a hollow cylindrical section 13, 14 which is enlarged in diameter and which serves as a stop for a union nut 15, 16.
- the tubular line sections 11, 12 serve on the one hand to supply a cooling medium - cooling water - to the burner head. On the other hand, they serve as electrical conductors, by means of which the electrical energy required for generating the arc is transmitted from the burner shaft 1 to the burner head 2.
- the burner shaft 1 is provided with a hollow cylindrical front part 1a facing the burner head 2, into which the lines provided for supplying the media and operating materials open.
- 1 shows two of a total of four tubular lines 17, 18, which serve to supply the cooling medium and the electrical energy.
- These tubular lines 17, 18 each have a sleeve 19, 20 provided with an external thread at the end.
- the sleeves 19, 20 are preferably soldered to the corresponding lines 17, 18.
- the respective union nut 15, 16 is screwed onto the thread of the respective sleeve 19, 20 and tightened, as a result of which there is a secure and tight connection between the respective line 17, 18 of the burner shaft 1 and the respective line section 11, 12 of the burner head 2.
- the union nut 15, 16, which is preferably provided with flats for attaching a wrench, forms, together with the respective sleeve 19, 20, a mechanical interface S1, S2.
- Both the enlarged, hollow-cylindrical section 13, 14 and the sleeve 19, 20 provided with an external thread are provided with flat end faces, the latter abutting one another.
- the hollow cylindrical Sections 13, 14 as well as the sleeves 19, 20 each have an O-ring 21, 22, 23, 24 in the area adjacent to the end faces.
- the four named line sections 11, 12 are dimensioned in such a way that, together with the screw connections, they enable the burner head 2 to be securely mechanically attached to the burner shaft 1 without additional mechanical connecting elements being necessary.
- a line section 26 connected to the cathode body 3 which leads radially into the cathode body 3 and serves to supply plasma gas, while via a further line section 27, which runs below the anode body 4, wettable powder can be introduced radially into the plasma jet.
- the two named line sections 26, 27 are connected in a conventional manner by means of a plug connection to the corresponding line 28, 29 of the burner shaft 1.
- Three screws 30 are provided for connecting the parts of the burner head 1, namely the cathode body 3, the anode body 4 and the insulating disk 5 interposed, of which only one is visible.
- a nut 31 made of an insulating material is screwed onto the end of the respective screw 30.
- each screw 30 is radially surrounded by an insulating sleeve 32.
- FIG. 2 which shows a plan view of the anode body 4 of the burner head, shows the two line sections 11, 11a leading into the anode body 4 for supplying the cooling medium.
- the union nut 15, 15a fixed to the respective line section 11, 11a is shown in longitudinal section. Between the two line sections 11, 11a mentioned, the line section 26 leading radially into the cathode body 3 for supplying the plasma gas can be seen.
- a screw connection has that Another advantage is that, in contrast to a plug connection, it forms an interface with good electrical contact, with low contact resistance and a large contact area. In addition, it is relatively insensitive to oxidation and soiling, since any protection when the union nut is tightened is displaced from the contact surfaces. In particular, this also reduces the risk of parasitic arcs. Finally, a screw connection also guarantees high mechanical stability, so that additional mechanical fastening elements can be dispensed with.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
- Fuel-Injection Apparatus (AREA)
- Nozzles (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH20962003 | 2003-12-09 | ||
PCT/CH2004/000616 WO2005057994A1 (de) | 2003-12-09 | 2004-10-08 | Plasmaspritzvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1692922A1 true EP1692922A1 (de) | 2006-08-23 |
EP1692922B1 EP1692922B1 (de) | 2007-04-25 |
Family
ID=34658632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04761956A Active EP1692922B1 (de) | 2003-12-09 | 2004-10-08 | Plasmaspritzvorrichtung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1692922B1 (de) |
JP (1) | JP2007514283A (de) |
AT (1) | ATE360975T1 (de) |
DE (1) | DE502004003646D1 (de) |
WO (1) | WO2005057994A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006038134B4 (de) * | 2006-08-16 | 2009-08-20 | Kjellberg Finsterwalde Plasma Und Maschinen Gmbh | Plasmabrennerkopf, Plasmabrennerschaft und Plasmabrenner |
DE102008018530B4 (de) | 2008-04-08 | 2010-04-29 | Kjellberg Finsterwalde Plasma Und Maschinen Gmbh | Düse für einen flüssigkeitsgekühlten Plasmabrenner, Anordnung aus derselben und einer Düsenkappe sowie flüssigkeitsgekühlter Plasmabrenner mit einer derartigen Anordnung |
DE102012003306B4 (de) | 2012-02-18 | 2024-03-21 | Amt Ag | Vorrichtung zum Plasmabeschichten |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2960594A (en) * | 1958-06-30 | 1960-11-15 | Plasma Flame Corp | Plasma flame generator |
JPS5638800A (en) * | 1979-09-07 | 1981-04-14 | Hitachi Ltd | Plasma torch |
JPS5849306B2 (ja) * | 1980-03-12 | 1983-11-02 | 株式会社東芝 | プラズマ溶射ト−チ |
CH647424A5 (en) * | 1982-07-09 | 1985-01-31 | Castolin Sa | Gun extension piece for a powder-spray torch |
DE3430383A1 (de) * | 1984-08-17 | 1986-02-27 | Plasmainvent AG, Zug | Plasmaspritzbrenner fuer innenbeschichtungen |
DE4228064A1 (de) | 1992-08-24 | 1994-03-03 | Plasma Technik Ag | Plasmaspritzgerät |
DE59401323D1 (de) * | 1993-09-29 | 1997-01-30 | Sulzer Metco Ag | Brennerkopf für Plasmaspritzgeräte |
JP3305185B2 (ja) * | 1996-02-14 | 2002-07-22 | プラズマ技研工業株式会社 | プラズマ溶射装置 |
AT406243B (de) * | 1998-01-28 | 2000-03-27 | Inocon Technologie Gmbh | Gerät mit einem plasmaerzeuger |
EP1065914B1 (de) * | 1999-06-30 | 2004-01-21 | Sulzer Metco AG | Plasmaspritzvorrichtung |
JP3443625B2 (ja) * | 2000-08-10 | 2003-09-08 | 島津工業有限会社 | プラズマ溶射トーチのための水冷ケーブルの接続具 |
CA2356583C (en) * | 2001-03-28 | 2007-10-16 | Nippon Welding Rod Co., Ltd. | Torch for powder plasma buildup welding |
-
2004
- 2004-10-08 AT AT04761956T patent/ATE360975T1/de not_active IP Right Cessation
- 2004-10-08 JP JP2006543340A patent/JP2007514283A/ja active Pending
- 2004-10-08 EP EP04761956A patent/EP1692922B1/de active Active
- 2004-10-08 WO PCT/CH2004/000616 patent/WO2005057994A1/de active IP Right Grant
- 2004-10-08 DE DE502004003646T patent/DE502004003646D1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2005057994A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1692922B1 (de) | 2007-04-25 |
DE502004003646D1 (de) | 2007-06-06 |
ATE360975T1 (de) | 2007-05-15 |
WO2005057994A1 (de) | 2005-06-23 |
JP2007514283A (ja) | 2007-05-31 |
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