DE19845349A1 - Core-filled thermal spraying wire, for producing wear and-or corrosion resistant coatings on heat exchanger and firing unit surfaces, contains an atomized iron-chromium alloy powder - Google Patents
Core-filled thermal spraying wire, for producing wear and-or corrosion resistant coatings on heat exchanger and firing unit surfaces, contains an atomized iron-chromium alloy powderInfo
- Publication number
- DE19845349A1 DE19845349A1 DE1998145349 DE19845349A DE19845349A1 DE 19845349 A1 DE19845349 A1 DE 19845349A1 DE 1998145349 DE1998145349 DE 1998145349 DE 19845349 A DE19845349 A DE 19845349A DE 19845349 A1 DE19845349 A1 DE 19845349A1
- Authority
- DE
- Germany
- Prior art keywords
- thermal spraying
- core
- corrosion resistant
- chromium alloy
- heat exchanger
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 12
- 238000005260 corrosion Methods 0.000 title claims abstract description 8
- 230000007797 corrosion Effects 0.000 title claims abstract description 8
- 238000007751 thermal spraying Methods 0.000 title claims abstract description 5
- 238000010304 firing Methods 0.000 title claims abstract description 4
- 229910000599 Cr alloy Inorganic materials 0.000 title abstract 2
- 239000000788 chromium alloy Substances 0.000 title abstract 2
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 title abstract 2
- 238000000576 coating method Methods 0.000 title description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 abstract description 12
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 229910052758 niobium Inorganic materials 0.000 abstract description 2
- 229910052720 vanadium Inorganic materials 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910015136 FeMn Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
Die Erfindung betrifft einen Fülldraht für das Beschichten der Oberfläche von Wärmetauschern und Feuerungsanlagen durch thermisches Spritzen zur Erhöhung des Verschleiß- und/oder Korrosionsschutzes.The invention relates to a cored wire for the Coating the surface of heat exchangers and Firing systems by thermal spraying for Increase in wear and / or Corrosion protection.
Bekannt sind Fülldrähte und Füllbänder. Sie können im Inneren neben lichtbogenstabilisierenden schutzgasbildenden sowie schlackebildenden Komponenten auch metallische Bestandteile aufweisen. Fülldrähte und Füllbänder werden zum Verbindungs- und Auftragsschweißen eingesetzt. Mit ihnen können Legierungen erzeugt werden, die aufgrund der Härte und/oder Zusammensetzung nicht als Massivdraht gezogen werden können.Cored wires and filler tapes are known. You can inside alongside arc stabilizing shielding gas and slag forming Components also have metallic components. Cored wires and filler strips are used for connecting and cladding are used. With them you can Alloys are created due to the hardness and / or composition not as a solid wire can be pulled.
Die Zusammensetzung der Fülldrähte prägt Eigenschaften und Schweißverhalten.The composition of the cored wire shapes Properties and welding behavior.
Zur Herstellung von Fülldrähten werden die verschiedensten Kombinationen von Pulvergemischen eingesetzt. Als Metallpulver kommen beispielsweise FeMn; FeCrC; Ni; Fe; usw. und deren Kombinationen zur Anwendung. Die Metallpulver können durch Gas- oder Wasserverdüsung erzeugt werden. For the production of cored wire the various combinations of powder mixtures used. For example, come as metal powder FeMn; FeCrC; Ni; Fe; etc. and their combinations to use. The metal powders can be or water atomization are generated.
Hergestellt werden die Fülldrähte, indem das Füllpulver in ein Rohr mit einem definierten Durchmesser eingerüttelt wird und dieses anschließend durch Ziehen oder Walzen auf einen vorgegebenen Enddurchmesser reduziert wird.The cored wires are manufactured by the Filling powder in a tube with a defined Diameter is shaken and this then by pulling or rolling on one predetermined final diameter is reduced.
Das Aufbringen der Beschichtung kann bevorzugt mittels eines thermischen Spritzverfahrens, zum Beispiel durch ein autogenes Flammspritzverfahren oder Lichtbogen-Spritzverfahren, erfolgen.The application of the coating can be preferred by means of a thermal spray process to Example using an autogenous flame spraying process or arc spraying.
Aufgabe der Erfindung ist es, einen Fülldraht mit einer speziellen Zusammensetzung für das thermische Spritzen zur Erzeugung einer verschleiß- und/oder korrosionsfesten Schutzschicht an Wärmetauschern und Feuerungsanlagen zu schaffen.The object of the invention is to use a cored wire a special composition for thermal Syringes to generate a wear and / or corrosion resistant protective layer on heat exchangers and To create combustion plants.
Gemäß der Erfindung wird die Aufgabe durch den kennzeichnenden Teil des Anspruches 1 gelöst. In den Ansprüchen 2 und 3 sind zusätzliche Bestandteile beansprucht, die zugegeben bzw. durch die angegebenen Bestandteile ersetzt werden können, um den Fülldraht den vorgegebenen Bedingungen anzupassen.According to the invention, the object is achieved by the characterizing part of claim 1 solved. In the Claims 2 and 3 are additional components claimed, the added or by the specified components can be replaced to the cored wire under the specified conditions adapt.
Weitere Merkmale und Einzelheiten ergeben sich aus den nachstehend als vorteilhaft angesehenen Ausführungsbeispielen.Further characteristics and details result from those considered advantageous below Embodiments.
An den Oberflächen, besonders an den Rohrwänden von Wärmetauschern und Feuerungsanlagen treten je nach Betriebsdauer starke bis sehr starke Verschleiß- bzw. Korrosionserscheinungen auf.On the surfaces, especially on the tube walls of Heat exchangers and combustion plants occur depending on Service life strong to very heavy wear or signs of corrosion.
Diese können durch eine Beschichtung mit dem
Werkstoffgemisch beseitigt und gleichzeitig die
Standzeiten erhöht werden. Der Fülldraht soll so
ausgeführt sein, daß die aufgespritzte Schicht eine
folgende Zusammensetzung aufweist:
These can be eliminated by coating the material mixture and at the same time increasing the service life. The cored wire should be designed so that the sprayed-on layer has the following composition:
20% Cr
5% Si
3% C
72% Fe20% Cr
5% Si
3% C
72% Fe
Die zu schützende Oberfläche - Innenwandung eines Wärmetauschers oder einer Feuerungsanlage - wurde durch Strahlen, vorzugsweise mit Korund mit einer Korngröße von 0,2 bis 0,5 mm vorbereitet. Dadurch wird eine metallisch saubere Oberfläche erzielt. Die Beschichtung erfolgt mit dem Fülldraht durch Aufspritzen mit einer Lichtbogen-Spritzpistole. The surface to be protected - inner wall of a Heat exchanger or a furnace - was by blasting, preferably with a corundum Grain size from 0.2 to 0.5 mm prepared. Thereby a clean metallic surface is achieved. The coating is done with the cored wire Spray on with an electric arc spray gun.
Die so behandelten Behälter weisen eine auf gespritzte Schicht mit einer Dicke von beispiels weise 0,5 mm auf und können mit oder ohne weitere Nachbehandlung eingesetzt werden.The containers treated in this way have one sprayed layer with a thickness of example have 0.5 mm and can with or without further Post-treatment can be used.
Für eine andere Beschichtung von Oberflächen von
Wärmetauschern und Feuerungsanlagen wurde ein
Werkstoffgemisch für den Fülldraht der folgenden
Zusammensetzung
ausgewählt:
A material mixture for the cored wire of the following composition was selected for a different coating of surfaces of heat exchangers and combustion plants:
20% Cr
3% Nb
3% V
1,5% C
1,5% B
71% Fe.20% Cr
3% Nb
3% V
1.5% C
1.5% B
71% Fe.
Vorbehandlung und Auftragen erfolgt wie oben bereits beschrieben. Pretreatment and application are carried out as above described.
Ein weiteres Werkstoffgemisch für die Beschichtung
enthält folgende Bestandteile:
Another material mixture for the coating contains the following components:
25% Cr
6% Al
69% Fe.25% Cr
6% Al
69% Fe.
Vorbehandlung und Auftragen erfolgt wie oben bereits beschrieben.Pretreatment and application are carried out as above described.
Durch die Beschichtung der Oberflächen von Wärmetauschern und Feuerungsanlagen mit den erfindungsgemäßen Zusammensetzungen der Fülldrähte wird ein hoher Verschleiß- und/oder Korrosionsschutz, insbesondere gegen anfallende Heißdampfkorrosion erreicht.By coating the surfaces of Heat exchangers and combustion plants with the Compositions of the cored wire according to the invention becomes a high wear and / or Corrosion protection, especially against accidental Superheated steam corrosion reached.
Claims (4)
Cr 15-35%
C 0-5%
Rest Fe
in Gewichtsprozent aufweist.1. Cored wire for thermal spraying on heat exchangers and firing systems to produce a wear and / or corrosion-resistant layer, the filling consisting of a powder which is obtained from a water and / or gas atomized melt, characterized in that the powder comprises the following components
Cr 15-35%
C 0-5%
Rest of Fe
in percent by weight.
Si 4-12%
C 0-5%
in Gewichtsprozent aufweist. 2. Cored wire according to claim 1, characterized in that the powder as additional components
Si 4-12%
C 0-5%
in percent by weight.
Nb 0,5-6%
V 0,5-6
C 1-4%
B 1-4%
in Gewichtsprozent aufweist.3. Cored wire according to claim 1, characterized in that the powder as additional components
Nb 0.5-6%
V 0.5-6
C 1-4%
B 1-4%
in percent by weight.
Al 4-8%
in Gewichtsprozent aufweist.4. Cored wire according to claim 1, characterized in that the powder as additional components
Al 4-8%
in percent by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998145349 DE19845349B4 (en) | 1998-10-02 | 1998-10-02 | Cored wire for thermal spraying on heat exchangers and combustion plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998145349 DE19845349B4 (en) | 1998-10-02 | 1998-10-02 | Cored wire for thermal spraying on heat exchangers and combustion plants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE19845349A1 true DE19845349A1 (en) | 2000-04-06 |
| DE19845349B4 DE19845349B4 (en) | 2005-03-31 |
Family
ID=7883142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1998145349 Revoked DE19845349B4 (en) | 1998-10-02 | 1998-10-02 | Cored wire for thermal spraying on heat exchangers and combustion plants |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19845349B4 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1209246A3 (en) * | 2000-11-07 | 2003-12-10 | OSU Maschinenbau GmbH | Method for surface coating resisting to wear and corrosion, and means for performing the method |
| WO2013056961A1 (en) * | 2011-10-17 | 2013-04-25 | Ford-Werke Gmbh | Plasma spraying method |
| US9162285B2 (en) | 2008-04-08 | 2015-10-20 | Federal-Mogul Corporation | Powder metal compositions for wear and temperature resistance applications and method of producing same |
| US9546412B2 (en) | 2008-04-08 | 2017-01-17 | Federal-Mogul Corporation | Powdered metal alloy composition for wear and temperature resistance applications and method of producing same |
| US9624568B2 (en) | 2008-04-08 | 2017-04-18 | Federal-Mogul Corporation | Thermal spray applications using iron based alloy powder |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH663219A5 (en) * | 1984-01-31 | 1987-11-30 | Castolin Sa | FLAME INJECTION MATERIAL. |
| DE3822874A1 (en) * | 1987-07-08 | 1989-01-19 | Castolin Sa | Metal powder and process therefor |
| JP2767988B2 (en) * | 1990-07-24 | 1998-06-25 | トヨタ自動車株式会社 | Wire for arc spraying of brake rotor |
| DE4104832A1 (en) * | 1991-02-16 | 1992-08-20 | Castolin Sa | METAL DEVICE FOR CLOSING COOKING OVENS AND METHOD FOR THE PRODUCTION THEREOF |
| DE4328732C1 (en) * | 1993-08-26 | 1995-02-16 | Castolin Sa | Process for producing a thermally sprayed metal-containing layer and a material for this purpose |
| DE4447514C2 (en) * | 1994-01-14 | 1996-07-25 | Castolin Sa | Process for the preparation of a thermal spraying aid and its use as a filler wire powder fill |
-
1998
- 1998-10-02 DE DE1998145349 patent/DE19845349B4/en not_active Revoked
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1209246A3 (en) * | 2000-11-07 | 2003-12-10 | OSU Maschinenbau GmbH | Method for surface coating resisting to wear and corrosion, and means for performing the method |
| US9162285B2 (en) | 2008-04-08 | 2015-10-20 | Federal-Mogul Corporation | Powder metal compositions for wear and temperature resistance applications and method of producing same |
| US9546412B2 (en) | 2008-04-08 | 2017-01-17 | Federal-Mogul Corporation | Powdered metal alloy composition for wear and temperature resistance applications and method of producing same |
| US9624568B2 (en) | 2008-04-08 | 2017-04-18 | Federal-Mogul Corporation | Thermal spray applications using iron based alloy powder |
| WO2013056961A1 (en) * | 2011-10-17 | 2013-04-25 | Ford-Werke Gmbh | Plasma spraying method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19845349B4 (en) | 2005-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8363 | Opposition against the patent | ||
| 8331 | Complete revocation |