DE4024381A1 - Internal combustion engine piston - has zones of forged pptn.-hardening steel contg. carbon, silicon, manganese, phosphorus, sulphur and vanadium - Google Patents

Internal combustion engine piston - has zones of forged pptn.-hardening steel contg. carbon, silicon, manganese, phosphorus, sulphur and vanadium

Info

Publication number
DE4024381A1
DE4024381A1 DE19904024381 DE4024381A DE4024381A1 DE 4024381 A1 DE4024381 A1 DE 4024381A1 DE 19904024381 DE19904024381 DE 19904024381 DE 4024381 A DE4024381 A DE 4024381A DE 4024381 A1 DE4024381 A1 DE 4024381A1
Authority
DE
Germany
Prior art keywords
forged
pptn
internal combustion
sulphur
vanadium
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
DE19904024381
Other languages
German (de)
Other versions
DE4024381C2 (en
Inventor
Werner H Bregler
Dieter Mueller-Schwelling
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.)
Mahle GmbH
Original Assignee
Mahle GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6411421&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE4024381(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mahle GmbH filed Critical Mahle GmbH
Priority to DE19904024381 priority Critical patent/DE4024381C2/en
Priority to US07/728,255 priority patent/US5136992A/en
Publication of DE4024381A1 publication Critical patent/DE4024381A1/en
Application granted granted Critical
Publication of DE4024381C2 publication Critical patent/DE4024381C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/04—Forging of engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0403—Refractory metals, e.g. V, W
    • F05C2201/0406—Chromium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0403—Refractory metals, e.g. V, W
    • F05C2201/0409—Molybdenum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel

Abstract

Piston has light metal hubs and other areas, partic. piston body, with areas, partic. those adjacent the combustion chamber, of pptn. - hardening forged steel, contg. (%) 0.32-0.45 C, 0.4-0.9 Si, 1.0-1.8 Mn, up to 0.035 P, up to 0.065 S, and 0.06-0.15 V. ADVANTAGE - Cheaper steel than that previously used, partic. cheap to work, with comparable properties.

Description

Die Erfindung betrifft einen Kolben für Verbrennungsmotoren mit geschmiedeten Bereichen aus Stahl nach dem Oberbegriff des Patentanspruchs.The invention relates to a piston for internal combustion engines with forged areas made of steel the preamble of the claim.

Als Stahlwerkstoff wurde bisher überwiegend der vergütete Chrom-Molybdän-Stahl 42CrMo4 eingesetzt. Er gilt für diesen Einsatzbereich als ein sehr guter Kompromiß in bezug auf seine Umformbarkeit, seine Festigkeitseigenschaften, Bearbeitbarkeit, Härtbarkeit und Kosten.Up to now, the tempered steel material has predominantly been used Chrome-molybdenum steel 42CrMo4 used. He is considered a very good one for this application Compromise on its formability, its Strength properties, machinability, hardenability and costs.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, einen kostengünstigeren, insbesondere kostengünstiger zu verarbeitenden, Werkstoff mit vergleichbar guten Eigenschaften einzusetzen.Proceeding from this, the object of the invention is a cheaper, especially cheaper to be processed, material with comparable good properties.

Gelöst wird diese Aufgabe durch die Verwendung eines ausscheidungshärtenden ferritisch-perlitischen Stahles in der Zusammensetzung nach dem kennzeichnenden Merkmal des Patentanspruchs.This task is solved by using a precipitation hardening ferritic-pearlitic steel in the composition after the characteristic Feature of the claim.

Die erfindungsgemäß vorgeschlagenen Stähle eignen sich besonders für den Einsatz bei Gelenkkolben, bei denen der Kolbenkopf mit den Naben lediglich über den Kolbenbolzen mit dem Kolbenschaft verbunden ist.The steels proposed according to the invention are suitable are particularly suitable for use with articulated pistons  which the piston head with the hubs only over the Piston pin is connected to the piston skirt.

Ein weiteres Einsatzgebiet sind Kolben, bei denen der Kolbenboden aus Stahl und über Schrauben mit dem Kolbenunterteil fest verbunden ist.Another area of application is pistons, in which the Piston base made of steel and with screws to the piston lower part is firmly connected.

Claims (1)

Kolben für Verbrennungsmotoren mit geschmiedeten Bereichen aus einem ausscheidungshärtenden ferritisch- perlitischen Stahl, insbesondere in den an den Brennraum angrenzenden Bereichen sowie an den Naben und Bereichen aus Leichtmetall, insbesondere im Bereich des Kolbenschaftes, gekennzeichnet durch folgende Zusammensetzung des Stahles:
C=0,32-0,45
Si=0,4-0,9
Mn=1,0-1,8
P bis zu 0,035
S bis zu 0,065
V=0,06-0,15Pistons for internal combustion engines with forged areas made of a precipitation-hardening ferritic-pearlitic steel, in particular in the areas adjacent to the combustion chamber and on the hubs and areas made of light metal, in particular in the area of the piston skirt, characterized by the following composition of the steel:
C = 0.32-0.45
Si = 0.4-0.9
Mn = 1.0-1.8
P up to 0.035
S up to 0.065
V = 0.06-0.15
DE19904024381 1990-07-12 1990-08-01 Pistons for internal combustion engines with forged areas made of steel Expired - Fee Related DE4024381C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19904024381 DE4024381C2 (en) 1990-08-01 1990-08-01 Pistons for internal combustion engines with forged areas made of steel
US07/728,255 US5136992A (en) 1990-07-12 1991-07-11 Piston for internal combustion engines with forged sections made of steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904024381 DE4024381C2 (en) 1990-08-01 1990-08-01 Pistons for internal combustion engines with forged areas made of steel

Publications (2)

Publication Number Publication Date
DE4024381A1 true DE4024381A1 (en) 1992-02-06
DE4024381C2 DE4024381C2 (en) 1999-01-28

Family

ID=6411421

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904024381 Expired - Fee Related DE4024381C2 (en) 1990-07-12 1990-08-01 Pistons for internal combustion engines with forged areas made of steel

Country Status (1)

Country Link
DE (1) DE4024381C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910582A1 (en) * 1999-03-10 2000-09-28 Mahle Gmbh Built piston
DE102012009030A1 (en) * 2012-05-05 2013-11-07 Mahle International Gmbh Arrangement of a piston and a crankcase for an internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013009209A1 (en) 2013-05-31 2014-03-27 Daimler Ag Producing piston for internal combustion engine by welding two components made of steel with each other using welding unit, forming rotationally symmetrical weld seam, and pre-heating portions of components using heat treatment unit
DE102014001806A1 (en) 2014-02-11 2014-08-28 Daimler Ag Manufacturing piston useful for an internal combustion engine, comprises welding at least two components with each other by a weld seam, in which at least one of components to be welded, is formed from steel having specific carbon content

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719569A1 (en) * 1986-07-05 1988-01-21 Thyssen Edelstahlwerke Ag MICROALLOY STEEL AND ITS USE
DE3935091A1 (en) * 1988-10-26 1990-05-03 Metal Leve Sa TWO-PIECE PISTON
DE4109628C2 (en) * 1990-07-12 1997-04-17 Mahle Gmbh Use of a precipitation hardening ferritic pearlitic steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719569A1 (en) * 1986-07-05 1988-01-21 Thyssen Edelstahlwerke Ag MICROALLOY STEEL AND ITS USE
DE3935091A1 (en) * 1988-10-26 1990-05-03 Metal Leve Sa TWO-PIECE PISTON
DE4109628C2 (en) * 1990-07-12 1997-04-17 Mahle Gmbh Use of a precipitation hardening ferritic pearlitic steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Stahl-Eisen-Werkstoffblatt, SEW 101 v. Okt. 1988 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910582A1 (en) * 1999-03-10 2000-09-28 Mahle Gmbh Built piston
US6622613B1 (en) 1999-03-10 2003-09-23 Mahle Gmbh Multipiece piston
DE102012009030A1 (en) * 2012-05-05 2013-11-07 Mahle International Gmbh Arrangement of a piston and a crankcase for an internal combustion engine

Also Published As

Publication number Publication date
DE4024381C2 (en) 1999-01-28

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee