EP0780552B1 - Auspuffanlage für Kraftfahrzeuge - Google Patents

Auspuffanlage für Kraftfahrzeuge Download PDF

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Publication number
EP0780552B1
EP0780552B1 EP96402533A EP96402533A EP0780552B1 EP 0780552 B1 EP0780552 B1 EP 0780552B1 EP 96402533 A EP96402533 A EP 96402533A EP 96402533 A EP96402533 A EP 96402533A EP 0780552 B1 EP0780552 B1 EP 0780552B1
Authority
EP
European Patent Office
Prior art keywords
steel
central part
compris entre
degrees celsius
exhaust
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.)
Expired - Lifetime
Application number
EP96402533A
Other languages
English (en)
French (fr)
Other versions
EP0780552A1 (de
Inventor
Vincent Cholet
Dominique Spehner
Gilbert Duboueix
Philippe Guesdon
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.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
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
Application filed by Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0780552A1 publication Critical patent/EP0780552A1/de
Application granted granted Critical
Publication of EP0780552B1 publication Critical patent/EP0780552B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/08—Surface coverings for corrosion prevention

Definitions

  • the present invention relates to an exhaust pipe motor vehicle.
  • a motor vehicle exhaust pipe is made up an outer shell, an inner shell and a central part made up of perforated pipes and assembled transverse partitions between them to form a chicane, called tripaille.
  • the central part of the exhaust pipes, as well as their inner shell must withstand very acidic and very basics of condensates that form during use when expansion therein of the burnt gases from the vehicle combustion engine automobile.
  • European Patent No. 007,131 describes such a particular type of enamel, the manufacturing and implementation of which complex and therefore entail an additional cost compared to the use of standard enamels.
  • the present invention provides an exhaust for motor vehicle, resistant to severe attack by condensates which are formed in its central part, and which is of a low cost.
  • an exhaust pipe motor vehicle consists of an outer casing 1, a inner casing 2 and a central part 3.
  • the central part 3 consists of perforated tubing 4 and transverse partitions 5 assembled together to form a baffle allowing the expansion of the burnt gases of the combustion engine of the motor vehicle.
  • Exhaust also includes tubing inlet 6, connecting it to the engine exhaust manifold and a outlet pipe 7 allowing gases to be evacuated to the atmosphere exhaust relaxed and rid of a certain amount of harmful particles.
  • the steel is obtained by hot rolling at a final rolling temperature exceeding the point Ar 3 to obtain a strip, which is coiled at a temperature above 600 degrees Celsius, and after cold rolling, is subjected to recrystallization annealing.
  • recrystallization annealing which can be indifferently a base bell annealing or a continuous annealing.
  • the strip winding temperature is greater than 700 degrees Celsius.
  • the steel is obtained by hot rolling at a final rolling temperature exceeding the point Ar 3 to obtain a strip, which is coiled at a temperature above 700 degrees Celsius, and after cold rolling, is subjected to recrystallization annealing. .
  • the strip winding temperature is greater than 750 degrees Celsius.
  • Annealing is a base decarburizing annealing in an expanded coil, that is to say a bell annealing of the coil wound in turns contiguous.
  • the non-contiguous turn coil is heated in a bell under HNx atmosphere up to about 600 degrees Celsius, then continue the annealing by subjecting it to a current of water vapour.
  • the steel is obtained by hot rolling at a final rolling temperature exceeding the point Ar 3 to obtain a strip, which is coiled at a temperature above 600 degrees Celsius, and after cold rolling, is subjected to recrystallization annealing. , basic annealing or continuous annealing.
  • the strip is wound at a temperature greater than 700 degrees Celsius.
  • the central part 3 can be made of an enameled steel exhaust pipe, perfectly resistant to corrosion, easy to use, using a standard type of enamel, while avoiding the defects linked to the annealing of enamel and defects of the "nail stroke defect" type, and which is low cost.
  • the inner casing 2 of the exhaust pipe can be made either of stainless steel or aluminized steel, as well as the outer casing 1.
  • the best compromise between efficiency, i.e. essentially corrosion resistance, and cost, consists in making either an exhaust pipe whose central part 3 and the inner envelope 2 are made of enamelled steel, the outer casing 1 being made of aluminized steel, ie an exhaust pipe whose central part 3 is in enamelled steel, the inner envelope 2 is in stainless steel and the outer casing 1 is made of aluminized steel.
  • Two exhaust pipes were produced with an envelope inner 2 in stainless steel, outer casing 1 in steel aluminized and a central part 3 in enamelled steel.
  • the steel was obtained by hot rolling at a temperature final rolling equal to 890 degrees Celsius to obtain a strip, which was wound at a temperature of 760 degrees Celsius, and after cold rolling, was subjected to recrystallization annealing in coil expanded.
  • This central part 3 was enameled by immersing it in a bath of enamel of common mass resistant to heat and corrosion, having the following composition in weight percent: S i O 2 54 Z r O 2 2 P 2 O 5 1 B 2 O 3 14 Al 2 O 3 3 C a O 4 B a O 5 Na 2 O 11 K 2 O 2 Li 2 O 2 N i O 1 C o O 0.5 C u O 0.5.
  • the steel was obtained by hot rolling at a temperature final rolling equal to 890 degrees Celsius to obtain a strip, which was wound at a temperature of 710 degrees Celsius, and after cold rolling, was subjected to continuous recrystallization annealing.
  • This central part 3 has been enamelled by immersing it in a bath of the same enamel as before.
  • the use of enamelled steels to make at least the central part of a pot exhaust said steel having a composition according to the invention, allows guarantee good resistance of the enamelled steel to the thermal shocks it undergoes in operation, that is to say that the cracking of the enamel is avoided.
  • steel containing in thousandths of a percent weight between 0 and 10 carbon and between 50 and 150 titanium has a better resistance to thermal shock than steel containing in thousandths of per hundred weight between 0 and 4 of carbon and between 0 and 10 of titanium, which still has very good resistance to thermal shock, better than standard mild steels.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Exhaust Silencers (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Valve Device For Special Equipments (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Heat Treatment Of Steel (AREA)

Claims (2)

  1. Auspufftopf für ein Kraftfahrzeug, umfassend eine äußere Umhüllung (1), eine innere Umhüllung (2) und einen mittleren Teil (3), der gebildet wird aus perforierten Rohren (4) und Quertrennwänden (5), die untereinander so verbunden sind, dass sie Hindernisse bilden, dadurch gekennzeichnet, dass die innere Umhüllung (2) und/oder der mittlere Teil (3) aus einem emailliertem Stahl gebildet ist, wobei der Stahl folgende Zusammensetzung in Tausendstel Gewichtsprozent aufweist:
    Kohlenstoff zwischen 0 und 10
    Mangan zwischen 150 und 400
    Phosphor zwischen 0 und 20
    Schwefel zwischen 10 und 30
    Aluminium zwischen 10 und 50
    Titan zwischen 50 und 150
    Kupfer zwischen 10 und 60
    Stickstoff zwischen 5 und 15,
    und der Rest Eisen und restliche Verunreinigungen,
    wobei der genannte Stahl durch Warmwalzen bei einer Walzendtemperatur über dem Ar3-Punkt hergestellt wird, um ein Band zu erhalten, das bei einer Temperatur von über 600 Grad Celsius gerollt wird und nach einem Kaltwalzen einem Rekristallisationsglühen unterzogen wird.
  2. Auspufftopf für ein Kraftfahrzeug nach Anspruch 1, dadurch gekennzeichnet, dass das Band bei einer Temperatur von über 700 Grad Celsius gerollt wird.
EP96402533A 1995-12-20 1996-11-26 Auspuffanlage für Kraftfahrzeuge Expired - Lifetime EP0780552B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9515087A FR2742802B1 (fr) 1995-12-20 1995-12-20 Pot d'echappement de vehicule automobile
FR9515087 1995-12-20

Publications (2)

Publication Number Publication Date
EP0780552A1 EP0780552A1 (de) 1997-06-25
EP0780552B1 true EP0780552B1 (de) 2001-09-12

Family

ID=9485673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96402533A Expired - Lifetime EP0780552B1 (de) 1995-12-20 1996-11-26 Auspuffanlage für Kraftfahrzeuge

Country Status (10)

Country Link
US (1) US5739485A (de)
EP (1) EP0780552B1 (de)
JP (1) JPH09189223A (de)
KR (1) KR970044261A (de)
AT (1) ATE205580T1 (de)
DE (1) DE69615137T2 (de)
DK (1) DK0780552T3 (de)
ES (1) ES2161997T3 (de)
FR (1) FR2742802B1 (de)
PT (1) PT780552E (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002050407A1 (en) 2000-12-20 2002-06-27 Quiet Storm, Llc Method and apparatus for improved noise attenuation in a dissipative internal combustion engine exhaust muffler
US7922837B2 (en) * 2001-10-29 2011-04-12 Nippon Steel Corporation Steel sheet for vitreous enameling and method for producing the same
US6837235B2 (en) * 2002-03-14 2005-01-04 Ssw Holdings Company, Inc. Porcelain oven rack
US20070272231A1 (en) * 2006-05-25 2007-11-29 Ssw Holding Company, Inc. Oven rack having an integral lubricious, dry porcelain surface
CN108251752B (zh) * 2018-01-18 2019-11-22 唐山钢铁集团有限责任公司 一种机动车消音片基板及其生产方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2433671A (en) * 1970-02-06 1972-07-20 Armco Steel Corporation Product and method for making drawing quality enameling stock
US4141724A (en) * 1978-06-21 1979-02-27 United States Steel Corporation Low-cost, high temperature oxidation-resistant steel
EP0007131B1 (de) * 1978-07-07 1982-03-24 Reimbold & Strick GmbH & Co. KG Emaillierter Schalldämpfer und Verfahren zum Emaillieren desselben
US4254684A (en) * 1979-01-25 1981-03-10 Helpinstill Iii Charles T Breakdown piano
DE2917586C2 (de) * 1979-04-30 1982-11-18 Werner Dr.-Ing. 8450 Amberg Baumann Auspufftopf aus emailliertem Stahlblech
US4264684A (en) * 1979-12-17 1981-04-28 Bethlehem Steel Corporation Zinc-alloy coated ferrous product resistant to embrittlement
JPH01275736A (ja) * 1988-04-28 1989-11-06 Nippon Steel Corp 加工性に優れた連続鋳造製ほうろう用鋼板およびその製造法
AU619128B2 (en) * 1989-07-19 1992-01-16 Kawasaki Steel Corporation Method of manufacturing enameling steel sheet excellent in adhesiveness
JPH04154919A (ja) * 1990-10-15 1992-05-27 Sumitomo Metal Ind Ltd 加工性に優れたほうろう用冷延鋼板の製造法
DE9318921U1 (de) * 1993-12-09 1994-02-03 Audi Ag, 85057 Ingolstadt Auspuffanlage für eine Diesel-Brennkraftmaschine

Also Published As

Publication number Publication date
JPH09189223A (ja) 1997-07-22
EP0780552A1 (de) 1997-06-25
US5739485A (en) 1998-04-14
DE69615137T2 (de) 2002-06-20
ATE205580T1 (de) 2001-09-15
FR2742802A1 (fr) 1997-06-27
PT780552E (pt) 2002-02-28
KR970044261A (ko) 1997-07-26
DE69615137D1 (de) 2001-10-18
FR2742802B1 (fr) 1998-01-30
DK0780552T3 (da) 2001-12-31
ES2161997T3 (es) 2001-12-16

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