DE69512856D1 - Steel for one-piece wheel tires for railways or the like - Google Patents

Steel for one-piece wheel tires for railways or the like

Info

Publication number
DE69512856D1
DE69512856D1 DE69512856T DE69512856T DE69512856D1 DE 69512856 D1 DE69512856 D1 DE 69512856D1 DE 69512856 T DE69512856 T DE 69512856T DE 69512856 T DE69512856 T DE 69512856T DE 69512856 D1 DE69512856 D1 DE 69512856D1
Authority
DE
Germany
Prior art keywords
railways
steel
wheel tires
piece wheel
steels
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
DE69512856T
Other languages
German (de)
Other versions
DE69512856T2 (en
Inventor
Giampiero Amici
Andrea Ghidini
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.)
LUCCHINI RS S.P.A., BRESCIA, IT
Original Assignee
LUCCHINI SIDERURGICA SpA MILAN
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 LUCCHINI SIDERURGICA SpA MILAN filed Critical LUCCHINI SIDERURGICA SpA MILAN
Publication of DE69512856D1 publication Critical patent/DE69512856D1/en
Application granted granted Critical
Publication of DE69512856T2 publication Critical patent/DE69512856T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above
    • 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
    • C21D2261/00—Machining or cutting being involved

Abstract

Steels for tyre rims and monobloc tyres for railways, tramways and underground railways, comprising two types of C-Mn-Ni-Mo steels micro-alloyed with B, Zr, Nb, V and Al.
DE69512856T 1994-08-09 1995-08-01 Steel for one-piece wheel tires for railways or the like Expired - Lifetime DE69512856T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI941729A IT1274607B (en) 1994-08-09 1994-08-09 STEELS FOR WHEEL RIMS AND SINGLE-WHEEL WHEELS FOR THE RAILWAY SECTOR AND SIMILAR

Publications (2)

Publication Number Publication Date
DE69512856D1 true DE69512856D1 (en) 1999-11-25
DE69512856T2 DE69512856T2 (en) 2000-02-24

Family

ID=11369468

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69512856T Expired - Lifetime DE69512856T2 (en) 1994-08-09 1995-08-01 Steel for one-piece wheel tires for railways or the like

Country Status (5)

Country Link
EP (1) EP0699774B1 (en)
AT (1) ATE185852T1 (en)
DE (1) DE69512856T2 (en)
ES (1) ES2137419T3 (en)
IT (1) IT1274607B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2764127B1 (en) 2011-10-07 2015-08-12 Babasaheb Neelkanth Kalyani A process to improve fatigue strength of micro alloy steels, forged parts made from the process and an apparatus to execute the process
CN110791618A (en) * 2019-11-11 2020-02-14 常熟非凡新材股份有限公司 Method for processing lining plate of ball mill

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS512616A (en) * 1974-06-25 1976-01-10 Nippon Steel Corp CHODAIKAJUYONET SUSHORIREERU
US4348800A (en) * 1980-04-14 1982-09-14 Republic Steel Corporation Production of steel products with medium to high contents of carbon and manganese and superior surface quality
DE3446794C1 (en) * 1984-12-21 1986-01-02 BWG Butzbacher Weichenbau GmbH, 6308 Butzbach Process for the heat treatment of pearlitic rail steel
JPH02133544A (en) * 1988-11-14 1990-05-22 Nkk Corp Rail steel stock excellent in quenching crack resistance
US4975041A (en) * 1989-05-18 1990-12-04 Fries Steven L Die assembly for die casting a propeller structure

Also Published As

Publication number Publication date
EP0699774A3 (en) 1996-05-08
ATE185852T1 (en) 1999-11-15
IT1274607B (en) 1997-07-18
EP0699774B1 (en) 1999-10-20
ITMI941729A0 (en) 1994-08-09
ES2137419T3 (en) 1999-12-16
ITMI941729A1 (en) 1996-02-09
EP0699774A2 (en) 1996-03-06
DE69512856T2 (en) 2000-02-24

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: LUCCHINI S.P.A., MAILAND/MILANO, IT

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: LUCCHINI SIDERMECCANICA S.P.A., BRESCIA, IT

8327 Change in the person/name/address of the patent owner

Owner name: LUCCHINI RS S.P.A., BRESCIA, IT