US20090320448A1 - Housing material of an exhaust gas treatment component - Google Patents
Housing material of an exhaust gas treatment component Download PDFInfo
- Publication number
- US20090320448A1 US20090320448A1 US12/471,842 US47184209A US2009320448A1 US 20090320448 A1 US20090320448 A1 US 20090320448A1 US 47184209 A US47184209 A US 47184209A US 2009320448 A1 US2009320448 A1 US 2009320448A1
- Authority
- US
- United States
- Prior art keywords
- weight
- housing
- nickel
- exhaust gas
- chromium
- 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.)
- Abandoned
Links
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/16—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/02—Corrosion resistive metals
- F01N2530/04—Steel alloys, e.g. stainless steel
Definitions
- the present invention relates to a housing of an exhaust treatment component such as, for example, a catalytic converter, an adsorber, a filter, a particle trap. or the like, for use in an exhaust treatment installation, in particular such an installation in a motor vehicle.
- an exhaust treatment component such as, for example, a catalytic converter, an adsorber, a filter, a particle trap. or the like, for use in an exhaust treatment installation, in particular such an installation in a motor vehicle.
- housings of this type must, in particular, be suitable for having a predefined mechanical strength even up to temperatures of up to 800° C. and above, in order to ensure permanent fixing even when the exhaust treatment component is subjected to considerable dynamic loads.
- a housing of an exhaust gas treatment component comprising a material having the following composition:
- the nickel/aluminum-containing austenitic steel disclosed here has a relatively high nickel content.
- This composition is particularly suitable for receiving metallic and brazed honeycomb bodies since these consist of a material similar to that of the brazed regions themselves, and an outstanding oxidation behavior is therefore achieved overall. This applies in particular when the metallic foils are joined together with a brazing material which results in a brazing region comprising approximately 70% nickel, 18% chromium and 10% silicon.
- Intermetallic nickel-aluminum precipitations which greatly increase the mechanical strength properties at least up to temperatures of approximately 800° C., in particular compared with a simple austenitic steel material, occur precisely with the composition claimed, and the wall thickness of the converter shell can therefore be reduced. This possibility of reducing the wall thickness additionally makes it possible to provide housings of this type at lower cost and at lower weight, which are both very desirable.
- the housing is used, in particular, for receiving a metallic honeycomb body which is brazed to the housing at high temperature.
- the honeycomb body may be constructed with at least partially structured metallic foils, such that passages, through which the exhaust gas can flow, are formed. All the foils are preferably brazed (at both ends) to the housing on the circumferential side.
- the sole FIGURE is a perspective view of a component of an exhaust gas treatment system.
- an exhaust treatment component 6 comprising a housing 1 and a honeycomb body 5 , which is positioned in the interior 4 of the housing 1 .
- the honeycomb body 5 is designed with a plurality of corrugated and smooth metal foils 7 which are stacked and wound together such as to form passages 8 through which the exhaust gas can flow.
- An exhaust treatment component 6 of this type may be designed, in particular, as a catalyst support, a mixing element, an adsorber, a particle trap, or the like.
- the housing 1 illustrated here with a cylindrical shape, has a length 3 and a thickness 2 .
- the thickness 2 is advantageously in a range of less than 1 mm. In particular, it is less than 0.8 mm.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
- Treating Waste Gases (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A housing of an exhaust gas treatment component is formed of a material having the following composition: iron: between 50 and 60 wt. %, nickel: between 16 and 24 wt. %, chromium: between 15 and 18 wt. %, aluminium: between 4 and 8 wt. %, and silicon: between 0.5 and 1.5 wt. %.
Description
- This is a continuing application, under 35 U.S.C. § 120, of copending international application No. PCT/EP2007/062326, filed Nov. 14, 2007, which designated the United States; this application also claims the priority, under 35 U.S.C. § 119, of German patent application No. DE 10 2006 055 879.0, filed Nov. 24, 2006; the prior applications are herewith incorporated by reference in their entirety.
- 1. Field of the Invention
- The present invention relates to a housing of an exhaust treatment component such as, for example, a catalytic converter, an adsorber, a filter, a particle trap. or the like, for use in an exhaust treatment installation, in particular such an installation in a motor vehicle.
- At present, it is known for both ferritic and austenitic alloys to be used as a basis for such a housing. Housings of this type must, in particular, be suitable for having a predefined mechanical strength even up to temperatures of up to 800° C. and above, in order to ensure permanent fixing even when the exhaust treatment component is subjected to considerable dynamic loads.
- It is accordingly an object of the invention to provide a material for the housing of an exhaust gas treatment component which overcomes a variety of disadvantages of the heretofore-known devices of this general type and which provides a material composition for a housing of an exhaust treatment component that satisfies the requirements mentioned above.
- With the foregoing and other objects in view there is provided, in accordance with the invention, a housing of an exhaust gas treatment component, comprising a material having the following composition:
-
- iron: 50 to 60% by weight,
- nickel: 16 to 24% by weight,
- chromium: 15 to 18% by weight,
- aluminum: 4 to 8% by weight,
- silicon: 0.5 to 1.5% by weight.
- The nickel/aluminum-containing austenitic steel disclosed here has a relatively high nickel content. This composition is particularly suitable for receiving metallic and brazed honeycomb bodies since these consist of a material similar to that of the brazed regions themselves, and an outstanding oxidation behavior is therefore achieved overall. This applies in particular when the metallic foils are joined together with a brazing material which results in a brazing region comprising approximately 70% nickel, 18% chromium and 10% silicon. Intermetallic nickel-aluminum precipitations, which greatly increase the mechanical strength properties at least up to temperatures of approximately 800° C., in particular compared with a simple austenitic steel material, occur precisely with the composition claimed, and the wall thickness of the converter shell can therefore be reduced. This possibility of reducing the wall thickness additionally makes it possible to provide housings of this type at lower cost and at lower weight, which are both very desirable.
- Preference is given to a housing in which the composition mentioned above is varied with regard to at least one of the following constituents:
-
- iron: 54 to 58% by weight,
- nickel: 18 to 22% by weight,
- chromium: 16 to 18% by weight,
- aluminum: 5 to 7% by weight,
- silicon: 0.8 to 1.2% by weight.
This means, in particular, that one or at least two of the constituents mentioned is or are selected in the narrower range.
- Particular preference is given to a housing in which the composition is varied with regard to at least one of the following constituents:
-
- iron: 56% by weight,
- nickel: 20% by weight,
- chromium: 17% by weight,
- aluminum: 6% by weight,
- silicon: 1% by weight,
wherein a tolerance range of 5% is permissible with regard to at least one constituent. This means, in particular, that the tolerance range can vary upward and/or downward about the stated value. The tolerance range is preferably at most 2% or even at most 0.5%.
- Preference is given to using the housing with a thickness of less than 1 mm (millimeter), in particular less than 0.8 mm. In this case, the housing is used, in particular, for receiving a metallic honeycomb body which is brazed to the housing at high temperature. For this purpose, the honeycomb body may be constructed with at least partially structured metallic foils, such that passages, through which the exhaust gas can flow, are formed. All the foils are preferably brazed (at both ends) to the housing on the circumferential side.
- Other features which are considered as characteristic for the invention are set forth in the appended claims.
- Although the invention is illustrated and described herein as embodied in a component for an exhaust gas treatment system, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
- The construction of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of the specific embodiment when read in connection with the accompanying drawing.
- The sole FIGURE is a perspective view of a component of an exhaust gas treatment system.
- Referring now to the figure of the drawing in detail, there is shown an exhaust treatment component 6 comprising a
housing 1 and ahoneycomb body 5, which is positioned in theinterior 4 of thehousing 1. Thehoneycomb body 5 is designed with a plurality of corrugated andsmooth metal foils 7 which are stacked and wound together such as to formpassages 8 through which the exhaust gas can flow. An exhaust treatment component 6 of this type may be designed, in particular, as a catalyst support, a mixing element, an adsorber, a particle trap, or the like. In this case, thehousing 1, illustrated here with a cylindrical shape, has alength 3 and athickness 2. Thethickness 2 is advantageously in a range of less than 1 mm. In particular, it is less than 0.8 mm.
Claims (8)
1. A housing of an exhaust gas treatment component, comprising a material having the following composition:
iron: 50 to 60% by weight,
nickel: 16 to 24% by weight,
chromium: 15 to 18% by weight,
aluminum: 4 to 8% by weight,
silicon: 0.5 to 1.5% by weight.
2. The housing according to claim 1 , wherein the composition is varied with regard to at least one of the following constituents:
iron: 56 to 58% by weight,
nickel: 18 to 22% by weight,
chromium: 16 to 18% by weight,
aluminum: 5 to 7% by weight,
silicon: 0.8 to 1.2% by weight.
3. The housing according to claim 1 , wherein the composition is varied with regard to at least one of the following constituents:
iron: 56% by weight,
nickel: 20% by weight,
chromium: 17% by weight,
aluminum: 6% by weight,
silicon: 1% by weight,
and wherein a tolerance range of 5% is permissible with regard to at least one constituent.
4. The housing according to claim 1 , wherein said housing has a wall thickness of less than 1 mm.
5. The housing according to claim 1 , wherein said housing has a wall thickness of less than 0.8 mm.
6. A housing of an exhaust gas treatment component, comprising a material consisting of the following composition:
iron: 50 to 60% by weight,
nickel: 16 to 24% by weight,
chromium: 15 to 18% by weight,
aluminum: 4 to 8% by weight,
silicon: 0.5 to 1.5% by weight.
7. The housing according to claim 6 , wherein the composition consists of the following constituents:
iron: 56 to 58% by weight,
nickel: 18 to 22% by weight,
chromium: 16 to 18% by weight,
aluminum: 5 to 7% by weight,
silicon: 0.8 to 1.2% by weight.
8. The housing according to claim 7 , wherein the composition consists of the following constituents:
iron: 56% by weight,
nickel: 20% by weight,
chromium: 17% by weight,
aluminum: 6% by weight,
silicon: 1% by weight,
and a tolerance range of 5% by weight is permissible with regard to at least one constituent.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006055879A DE102006055879A1 (en) | 2006-11-24 | 2006-11-24 | Housing material of an exhaust treatment component |
DEDE102006055879.0 | 2006-11-24 | ||
PCT/EP2007/062326 WO2008061925A2 (en) | 2006-11-24 | 2007-11-14 | Housing material of an exhaust treatment component |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/062326 Continuation WO2008061925A2 (en) | 2006-11-24 | 2007-11-14 | Housing material of an exhaust treatment component |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090320448A1 true US20090320448A1 (en) | 2009-12-31 |
Family
ID=39033673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/471,842 Abandoned US20090320448A1 (en) | 2006-11-24 | 2009-05-26 | Housing material of an exhaust gas treatment component |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090320448A1 (en) |
EP (1) | EP2104747A2 (en) |
JP (1) | JP2010510437A (en) |
DE (1) | DE102006055879A1 (en) |
RU (1) | RU2009123648A (en) |
WO (1) | WO2008061925A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107939487A (en) * | 2015-12-17 | 2018-04-20 | 秦川 | A kind of tail-gas purifier of vehicle carrier |
CN114836671A (en) * | 2022-05-05 | 2022-08-02 | 兰州理工大学 | High-aluminum 310S stainless steel and preparation method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989514A (en) * | 1974-07-25 | 1976-11-02 | Nisshin Steel Co., Ltd. | Heat-resisting austenitic stainless steel |
US4102225A (en) * | 1976-11-17 | 1978-07-25 | The International Nickel Company, Inc. | Low chromium oxidation resistant austenitic stainless steel |
US5130085A (en) * | 1987-04-24 | 1992-07-14 | Nippon Steel Corporation | High al austenitic heat-resistant steel superior in hot workability |
US20020061257A1 (en) * | 2000-09-25 | 2002-05-23 | Shuji Hamano | Stainless cast steel having good heat resistance and good machinability |
US20080053080A1 (en) * | 2005-03-16 | 2008-03-06 | Emitec Gesellschaft Fur Emissionstechnologie Mbh | Housing for an Exhaust Gas Treatment Component with a Reinforcing Sleeve, Exhaust Gas Treatment Component, Exhaust System and Motor Vehicle |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5278612A (en) * | 1975-10-29 | 1977-07-02 | Nippon Steel Corp | Austenite-based heat-resistant steel capable of forming film of a#o# a t high temperatures in oxidizing atmosphere |
DE3726072A1 (en) * | 1987-08-06 | 1989-02-16 | Thyssen Edelstahlwerke Ag | Soldering method |
EP0497992A1 (en) * | 1989-05-16 | 1992-08-12 | Nippon Steel Corporation | Stainless steel foil for automobile exhaust gaspurifying catalyst carrier and process for preparation thereof |
DE19928842C2 (en) * | 1999-06-24 | 2001-07-12 | Krupp Vdm Gmbh | Ferritic alloy |
JP3700977B2 (en) * | 2003-03-26 | 2005-09-28 | 三菱製鋼株式会社 | Austenitic heat-resistant cast steel with low cost, good castability, high-temperature strength and oxidation resistance, and exhaust system parts made of it |
-
2006
- 2006-11-24 DE DE102006055879A patent/DE102006055879A1/en not_active Withdrawn
-
2007
- 2007-11-14 RU RU2009123648/02A patent/RU2009123648A/en not_active Application Discontinuation
- 2007-11-14 EP EP07822581A patent/EP2104747A2/en not_active Withdrawn
- 2007-11-14 JP JP2009537604A patent/JP2010510437A/en active Pending
- 2007-11-14 WO PCT/EP2007/062326 patent/WO2008061925A2/en active Application Filing
-
2009
- 2009-05-26 US US12/471,842 patent/US20090320448A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989514A (en) * | 1974-07-25 | 1976-11-02 | Nisshin Steel Co., Ltd. | Heat-resisting austenitic stainless steel |
US4102225A (en) * | 1976-11-17 | 1978-07-25 | The International Nickel Company, Inc. | Low chromium oxidation resistant austenitic stainless steel |
US5130085A (en) * | 1987-04-24 | 1992-07-14 | Nippon Steel Corporation | High al austenitic heat-resistant steel superior in hot workability |
US20020061257A1 (en) * | 2000-09-25 | 2002-05-23 | Shuji Hamano | Stainless cast steel having good heat resistance and good machinability |
US20080053080A1 (en) * | 2005-03-16 | 2008-03-06 | Emitec Gesellschaft Fur Emissionstechnologie Mbh | Housing for an Exhaust Gas Treatment Component with a Reinforcing Sleeve, Exhaust Gas Treatment Component, Exhaust System and Motor Vehicle |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107939487A (en) * | 2015-12-17 | 2018-04-20 | 秦川 | A kind of tail-gas purifier of vehicle carrier |
CN114836671A (en) * | 2022-05-05 | 2022-08-02 | 兰州理工大学 | High-aluminum 310S stainless steel and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
WO2008061925A2 (en) | 2008-05-29 |
RU2009123648A (en) | 2010-12-27 |
DE102006055879A1 (en) | 2008-05-29 |
JP2010510437A (en) | 2010-04-02 |
WO2008061925A3 (en) | 2009-04-09 |
EP2104747A2 (en) | 2009-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |