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EP0347568A3 - Method of making wear-resisting castings - Google Patents

Method of making wear-resisting castings Download PDF

Info

Publication number
EP0347568A3
EP0347568A3 EP19890108131 EP89108131A EP0347568A3 EP 0347568 A3 EP0347568 A3 EP 0347568A3 EP 19890108131 EP19890108131 EP 19890108131 EP 89108131 A EP89108131 A EP 89108131A EP 0347568 A3 EP0347568 A3 EP 0347568A3
Authority
EP
European Patent Office
Prior art keywords
castings
wear
making wear
alloy
making
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
EP19890108131
Other languages
German (de)
French (fr)
Other versions
EP0347568A2 (en
EP0347568B1 (en
Inventor
Kurt Wizemann
Peter Dr.-Ing. Peppler
Gotthard Dr.-Ing. Wolf
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-J. WIZEMANN GMBH & CO. KG
Original Assignee
Mahle-J Wizemann & Co KG 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
Application filed by Mahle-J Wizemann & Co KG GmbH filed Critical Mahle-J Wizemann & Co KG GmbH
Publication of EP0347568A2 publication Critical patent/EP0347568A2/en
Publication of EP0347568A3 publication Critical patent/EP0347568A3/en
Application granted granted Critical
Publication of EP0347568B1 publication Critical patent/EP0347568B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
    • 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
    • C21D5/00—Heat treatments of cast-iron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

Um bei einem Verfahren zur Herstellung verschleißfester Gußtei­ le aus einer Gußeisenlegierung, wobei die Gußteile, die Ledebu­ ritanteile in Randzonen und Graphitausscheidungen umfassen, bei einer Austenitisierungstemperatur geglüht und nachfolgend abge­ schreckt werden, Gußteile mit einer verbesserten Verschleißfe­ stigkeit und gleichzeitig einer verbesserten Zugfestigkeit und Dehnungscharakteristik zu erhalten, wird vorgeschlagen, daß das Abschrecken zu einem Zeitpunkt erfolgt, bei dem die Gußmatrix durch das Glühen im wesentlichen in Austenit umgewandelt ist, wobei jedoch die Karbide der Legierung noch im wesentlichen unzersetzt vorliegen. To be in a process for making wear-resistant castings le from a cast iron alloy, the castings, the Ledebu rite fractions in marginal zones and graphite deposits include an austenitizing temperature annealed and then abge be frightened, castings with an improved wear strength and at the same time an improved tensile strength and To obtain elongation characteristics, it is proposed that the Quenching occurs at a time when the molding matrix essentially transformed into austenite by annealing, however, the carbides of the alloy are still essentially are undecomposed.

EP89108131A 1988-06-23 1989-05-05 Method of making wear-resisting castings Expired - Lifetime EP0347568B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821169A DE3821169A1 (en) 1988-06-23 1988-06-23 METHOD FOR PRODUCING WEAR-RESISTANT CASTING PARTS
DE3821169 1988-06-23

Publications (3)

Publication Number Publication Date
EP0347568A2 EP0347568A2 (en) 1989-12-27
EP0347568A3 true EP0347568A3 (en) 1991-04-03
EP0347568B1 EP0347568B1 (en) 1996-04-24

Family

ID=6357059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108131A Expired - Lifetime EP0347568B1 (en) 1988-06-23 1989-05-05 Method of making wear-resisting castings

Country Status (2)

Country Link
EP (1) EP0347568B1 (en)
DE (2) DE3821169A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109852773A (en) * 2019-03-21 2019-06-07 长春工业大学 A kind of heat treatment method effectively improving spheroidal graphite cast-iron hardness

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5837069A (en) * 1997-09-16 1998-11-17 Weyburn-Bartel Inc. Cast iron components and method of making
DE102007006973A1 (en) * 2007-02-13 2008-08-14 M. Busch Gmbh & Co Kg Cast iron alloy for brake disc included carbon, silicon, manganese, copper, and nickel, with low maximum set for phosphorus and sulfur as impurities

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4230506A (en) * 1979-05-06 1980-10-28 Textron, Inc. Cam shaft manufacturing process
EP0018445A1 (en) * 1978-12-13 1980-11-12 Horst Dr. Mühlberger Process for the manufacture of castings of nodular castiron

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018445A1 (en) * 1978-12-13 1980-11-12 Horst Dr. Mühlberger Process for the manufacture of castings of nodular castiron
US4230506A (en) * 1979-05-06 1980-10-28 Textron, Inc. Cam shaft manufacturing process

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FACHBERICHTE HüTTENPRAXIS METALLWEITERVERARBEITUNGBand 25, Nr. 3, 1987, Seiten 154-161, Coburg, DE; G. BARBEZAT et al.: "Bainitisch-austenitische Gusseisen mit Kugelgraphit: Werkstoffe für die Bedürfnisee von heute und morgen" *
KONSTRUIEREN & GIESSEN 1979, Seiten 12-18, Düsseldorf, DE; P. PEPPLER: "Schalenhartguss - Eigenschaften und Anwendung" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109852773A (en) * 2019-03-21 2019-06-07 长春工业大学 A kind of heat treatment method effectively improving spheroidal graphite cast-iron hardness

Also Published As

Publication number Publication date
EP0347568A2 (en) 1989-12-27
DE3821169A1 (en) 1989-12-28
EP0347568B1 (en) 1996-04-24
DE58909665D1 (en) 1996-05-30

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