EP0780552A1 - Auspuffanlage für Kraftfahrzeuge - Google Patents

Auspuffanlage für Kraftfahrzeuge Download PDF

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Publication number
EP0780552A1
EP0780552A1 EP96402533A EP96402533A EP0780552A1 EP 0780552 A1 EP0780552 A1 EP 0780552A1 EP 96402533 A EP96402533 A EP 96402533A EP 96402533 A EP96402533 A EP 96402533A EP 0780552 A1 EP0780552 A1 EP 0780552A1
Authority
EP
European Patent Office
Prior art keywords
steel
motor vehicle
vehicle exhaust
strip
degrees celsius
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
Application number
EP96402533A
Other languages
English (en)
French (fr)
Other versions
EP0780552B1 (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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys 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 a motor vehicle exhaust.
  • a motor vehicle exhaust pipe is made up of an external envelope, an internal envelope and a central part made up of perforated pipes and transverse partitions assembled together to form a baffle, called tripaille.
  • the central part of the exhaust pipes, as well as their inner casing must resist the very acidic and very basic aggressions of the condensates which are formed during use when the burnt gases from the combustion engine of the vehicle are relaxed therein. automobile.
  • nail stroke defects which result in small tearing of enamel in the shape of a semicircle.
  • European Patent No. 007,131 describes such a particular type of enamel, the manufacture and implementation of which prove to be complex and therefore entail an additional cost compared to the use of standard enamels.
  • the present invention provides an exhaust for a motor vehicle, resistant to severe attacks from condensates which form in its central part, and which is of low cost.
  • a motor vehicle exhaust pipe consists of an outer casing 1, an inner casing 2 and a central part 3.
  • the central part 3 is made up of perforated pipes 4 and transverse partitions 5 assembled together to form a baffle allowing the burnt gases of the combustion engine of the motor vehicle to relax.
  • the exhaust pipe also includes an inlet pipe 6, connecting it to the engine exhaust manifold and an outlet pipe 7 allowing the gases to be evacuated to the atmosphere. exhaust pipes relaxed and free 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 winding temperature of the strip 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 higher 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 non-contiguous turns.
  • the non-contiguous turn coil is heated in a bell under an HNx atmosphere to approximately 600 degrees Celsius, then the annealing is continued by subjecting it to a current of steam.
  • 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 above 700 degrees Celsius.
  • the inner casing 2 of the exhaust can be made either of stainless steel or of aluminized steel, as is the outer casing 1.
  • the best compromise between efficiency, that is to say essentially resistance to corrosion, and cost, consists in producing either an exhaust pipe whose central part 3 and the inner casing 2 are made of enamelled steel, the outer casing 1 being in aluminized steel, that is to say an exhaust pipe the central part 3 of which is in enamelled steel, the inner casing 2 is in stainless steel and the outer casing 1 is in aluminized steel.
  • Two exhaust pipes were produced with an inner casing 2 of stainless steel, an outer casing 1 of aluminized steel and a central part 3 of enamelled steel.
  • the steel was obtained by hot rolling at a final rolling temperature of 890 degrees Celsius to obtain a strip, which was coiled at a temperature of 760 degrees Celsius, and after cold rolling was subjected to a recrystallization annealing in an expanded coil.
  • This central part 3 was enamelled 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 final rolling temperature of 890 degrees Celsius to obtain a strip, which was coiled at a temperature of 710 degrees Celsius, and after cold rolling, was subjected to a continuous recrystallization annealing.
  • This central part 3 was enameled by immersing it in a bath of the same enamel as previously.
  • enamelled steels to produce at least the central part of an exhaust pipe, said steel having a composition according to the invention, makes it possible to guarantee good resistance of the steel. enamelled with thermal shocks which it undergoes in operation, that is to say that the cracking of the enamel is avoided.
  • the steel containing in thousandths of weight percent between 0 and 10 of carbon and between 50 and 150 of titanium has better resistance to thermal shock than the steel containing in thousandths of weight percent between 0 and 4 of carbon and between 0 and 10 of titanium, which nevertheless 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)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (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)
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 true EP0780552A1 (de) 1997-06-25
EP0780552B1 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
AU2002363283B2 (en) * 2001-10-29 2005-07-21 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

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2078273A5 (en) * 1970-02-06 1971-11-05 Armco Steel Corp Low carbon, iron-contng enamel
EP0007131A1 (de) * 1978-07-07 1980-01-23 Reimbold & Strick GmbH & Co. KG Emaillierter Schalldämpfer und Verfahren zum Emaillieren desselben
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
EP0434849A1 (de) * 1989-07-19 1991-07-03 Kawasaki Steel Corporation Verfahren zur herstellung von stahlblechen zur emaillierung mit verbesserter emailhaftung
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141724A (en) * 1978-06-21 1979-02-27 United States Steel Corporation Low-cost, high temperature oxidation-resistant steel
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2078273A5 (en) * 1970-02-06 1971-11-05 Armco Steel Corp Low carbon, iron-contng enamel
EP0007131A1 (de) * 1978-07-07 1980-01-23 Reimbold & Strick GmbH & Co. KG Emaillierter Schalldämpfer und Verfahren zum Emaillieren desselben
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
EP0434849A1 (de) * 1989-07-19 1991-07-03 Kawasaki Steel Corporation Verfahren zur herstellung von stahlblechen zur emaillierung mit verbesserter emailhaftung
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 043 (C - 0681) 26 January 1990 (1990-01-26) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 443 (C - 0985) 16 September 1992 (1992-09-16) *

Also Published As

Publication number Publication date
KR970044261A (ko) 1997-07-26
FR2742802B1 (fr) 1998-01-30
DE69615137T2 (de) 2002-06-20
FR2742802A1 (fr) 1997-06-27
PT780552E (pt) 2002-02-28
DE69615137D1 (de) 2001-10-18
EP0780552B1 (de) 2001-09-12
DK0780552T3 (da) 2001-12-31
US5739485A (en) 1998-04-14
ES2161997T3 (es) 2001-12-16
ATE205580T1 (de) 2001-09-15
JPH09189223A (ja) 1997-07-22

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