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FR2342818A1 - MANUFACTURE OF ANNULAR STEEL PARTS BY CASTING CENTRIFUGAL INGOTS, FLOWS IN CROWNS - Google Patents

MANUFACTURE OF ANNULAR STEEL PARTS BY CASTING CENTRIFUGAL INGOTS, FLOWS IN CROWNS

Info

Publication number
FR2342818A1
FR2342818A1 FR7606260A FR7606260A FR2342818A1 FR 2342818 A1 FR2342818 A1 FR 2342818A1 FR 7606260 A FR7606260 A FR 7606260A FR 7606260 A FR7606260 A FR 7606260A FR 2342818 A1 FR2342818 A1 FR 2342818A1
Authority
FR
France
Prior art keywords
casting
temp
degrees
crowns
ingots
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
FR7606260A
Other languages
French (fr)
Other versions
FR2342818B1 (en
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.)
Czech Academy of Sciences CAS
Original Assignee
Czech Academy of Sciences CAS
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 Czech Academy of Sciences CAS filed Critical Czech Academy of Sciences CAS
Priority to FR7606260A priority Critical patent/FR2342818A1/en
Publication of FR2342818A1 publication Critical patent/FR2342818A1/en
Application granted granted Critical
Publication of FR2342818B1 publication Critical patent/FR2342818B1/fr
Granted 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
    • 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
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races

Landscapes

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

Abstract

The prodn. of ring-shaped workpieces of hypereutectoid steel, which after hardening, contains low C martensite with a dislocation substructure, comprises cooling the hollow ingot, or a section of the ingot, obtd. by centrifugal casting, from the casting temp. to is not >100 degrees below the eutectoid transformation, and re-heating the casting to is not >100 degrees C. above the temp. of the eutectoid transformation. After a spheroidal pearlite structure is obtained, the temp. is raised to is not >1150 degrees C, followed by forming a semi-finished product, e.g. by rolling, and finally applying a hardening and annealing treatment. Method utilizes fully the thermal energy supplied by the centrifugal casting of the ring, being sufficient for the subsequent forming and heat treatment, which gives a saving in time.
FR7606260A 1976-03-05 1976-03-05 MANUFACTURE OF ANNULAR STEEL PARTS BY CASTING CENTRIFUGAL INGOTS, FLOWS IN CROWNS Granted FR2342818A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7606260A FR2342818A1 (en) 1976-03-05 1976-03-05 MANUFACTURE OF ANNULAR STEEL PARTS BY CASTING CENTRIFUGAL INGOTS, FLOWS IN CROWNS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7606260A FR2342818A1 (en) 1976-03-05 1976-03-05 MANUFACTURE OF ANNULAR STEEL PARTS BY CASTING CENTRIFUGAL INGOTS, FLOWS IN CROWNS

Publications (2)

Publication Number Publication Date
FR2342818A1 true FR2342818A1 (en) 1977-09-30
FR2342818B1 FR2342818B1 (en) 1980-02-15

Family

ID=9169992

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7606260A Granted FR2342818A1 (en) 1976-03-05 1976-03-05 MANUFACTURE OF ANNULAR STEEL PARTS BY CASTING CENTRIFUGAL INGOTS, FLOWS IN CROWNS

Country Status (1)

Country Link
FR (1) FR2342818A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636076A1 (en) * 1988-09-02 1990-03-09 Ovako Steel Ab PROCESS FOR MANUFACTURING STEEL ELEMENTS DESIGNED TO RESIST HIGH STRESSES, SUCH AS ROLLER BEARING ELEMENTS

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB746776A (en) * 1953-08-01 1956-03-21 American Brake Shoe Co Improvements in or relating to method of heat treating a high carbon alloy cast steel and the resulting product
FR2052276A5 (en) * 1969-06-09 1971-04-09 Ford France
FR2097932A5 (en) * 1970-06-16 1972-03-03 Apv Paramount Ltd
US3704183A (en) * 1971-05-26 1972-11-28 Timken Co Method for producing a low-cost hypereutectoid bearing steel
FR2262117A1 (en) * 1974-02-23 1975-09-19 Kubota Ltd

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB746776A (en) * 1953-08-01 1956-03-21 American Brake Shoe Co Improvements in or relating to method of heat treating a high carbon alloy cast steel and the resulting product
FR2052276A5 (en) * 1969-06-09 1971-04-09 Ford France
FR2097932A5 (en) * 1970-06-16 1972-03-03 Apv Paramount Ltd
US3704183A (en) * 1971-05-26 1972-11-28 Timken Co Method for producing a low-cost hypereutectoid bearing steel
FR2262117A1 (en) * 1974-02-23 1975-09-19 Kubota Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636076A1 (en) * 1988-09-02 1990-03-09 Ovako Steel Ab PROCESS FOR MANUFACTURING STEEL ELEMENTS DESIGNED TO RESIST HIGH STRESSES, SUCH AS ROLLER BEARING ELEMENTS

Also Published As

Publication number Publication date
FR2342818B1 (en) 1980-02-15

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Legal Events

Date Code Title Description
ST Notification of lapse