[go: up one dir, main page]

FR2278773A1 - Fluidised bed for heat-treating small objects - esp the isothermal quenching of iron shot - Google Patents

Fluidised bed for heat-treating small objects - esp the isothermal quenching of iron shot

Info

Publication number
FR2278773A1
FR2278773A1 FR7401777A FR7401777A FR2278773A1 FR 2278773 A1 FR2278773 A1 FR 2278773A1 FR 7401777 A FR7401777 A FR 7401777A FR 7401777 A FR7401777 A FR 7401777A FR 2278773 A1 FR2278773 A1 FR 2278773A1
Authority
FR
France
Prior art keywords
shot
fluidised bed
isothermal quenching
esp
small objects
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
FR7401777A
Other languages
French (fr)
Other versions
FR2278773B1 (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.)
Heurtey Metallurgie SA
Original Assignee
Heurtey Metallurgie SA
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 Heurtey Metallurgie SA filed Critical Heurtey Metallurgie SA
Priority to FR7401777A priority Critical patent/FR2278773A1/en
Publication of FR2278773A1 publication Critical patent/FR2278773A1/en
Application granted granted Critical
Publication of FR2278773B1 publication Critical patent/FR2278773B1/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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • C21D1/34—Methods of heating
    • C21D1/53—Heating in fluidised beds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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)
  • Hard Magnetic Materials (AREA)

Abstract

In a process for the heat treatment of small objects, esp. metal shot, fed into a fluidised bed of refractory particles heated to the treatment temp., the geometric configuration of the bed and the size of the particles are selected to produce a mixt. of particles and shot held at a constant treatment temp. for a specific time for all the shot and, finally the treated shot is separated from the refractory particles. The process is pref. applied in the isothermal quenching of the metal shot by injecting water into the fluidised bed, the water evaporating and thereby cooling the shot; the shot is pref. sepd. magnetically and the refractory particles recycled. Provides effective isothermal quenching of the shot without causing cooling cracks, and the shot does not require subsequent pickling.
FR7401777A 1974-01-18 1974-01-18 Fluidised bed for heat-treating small objects - esp the isothermal quenching of iron shot Granted FR2278773A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7401777A FR2278773A1 (en) 1974-01-18 1974-01-18 Fluidised bed for heat-treating small objects - esp the isothermal quenching of iron shot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7401777A FR2278773A1 (en) 1974-01-18 1974-01-18 Fluidised bed for heat-treating small objects - esp the isothermal quenching of iron shot

Publications (2)

Publication Number Publication Date
FR2278773A1 true FR2278773A1 (en) 1976-02-13
FR2278773B1 FR2278773B1 (en) 1976-11-26

Family

ID=9133677

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7401777A Granted FR2278773A1 (en) 1974-01-18 1974-01-18 Fluidised bed for heat-treating small objects - esp the isothermal quenching of iron shot

Country Status (1)

Country Link
FR (1) FR2278773A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003433A1 (en) * 1987-10-09 1989-04-20 Ewald Schwing Process for hot quenching of alloyed steel objects

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003433A1 (en) * 1987-10-09 1989-04-20 Ewald Schwing Process for hot quenching of alloyed steel objects

Also Published As

Publication number Publication date
FR2278773B1 (en) 1976-11-26

Similar Documents

Publication Publication Date Title
DE3864007D1 (en) METHOD FOR HEAT TREATING METAL WORKPIECES.
GB1156063A (en) A Method of Recovering Hydrochloric Acid from Pickling Liquors Containing Hydrochloric Acid.
GB1047637A (en) Improved hot rolled steel rod
RU93005122A (en) METHOD FOR RECONSTITUTIONAL ANTICATION OF POWDER IRON AND DEVICE FOR ITS IMPLEMENTATION
ES402594A1 (en) Continuous heat treating process for low carbon structural steels in bar form
GB1365180A (en) Surface hardening
GB1178338A (en) A Method of and Apparatus for Inductively Heat Treating Steel Workpieces.
GB1342417A (en) Method for effecting the repid heat-treatment of steel plate
FR2278773A1 (en) Fluidised bed for heat-treating small objects - esp the isothermal quenching of iron shot
GB1417624A (en) Properties of steel by heat treatment
JPS5541964A (en) Method and apparatus for heat treatment of ring form body
GB1394199A (en) Annealing furnace and method for its operation
ZA737752B (en) Improvements process of heat-treating megnetite iron ore involving heat recuperation from cooling of product
NL7110776A (en) Treating hot-rolled steel products, eg - sheets, rails or angles
GB760166A (en) Process for heat treating mild steel articles
JPS5585623A (en) Continuous over-aging method for continuously hot aluminum dipped steel sheet
GB1045692A (en) Heat treatment method
GB1316536A (en) Method of hot straightening and quench hardening an elongate metal workpiece
FR2174657A1 (en) Chlutchplate heat treatment - accelerated by heating to alpha iron to austenite change point
GB1294379A (en) Production of steel rod or wire
FR2447968A1 (en) Surface hardening of high carbon steels - which are induction heated and then quenched in fluidised bed or stream of particles, which may be heated for isothermal quenching
FR2044359A5 (en) Treatment of ash from roastings of iron - pyrites
GB1048833A (en) Heat treatment of elongate material
GB1144304A (en) Method of heat-treating beta titanium-base alloy
DE3276438D1 (en) Process and apparatus for heat treating sections of ferrous workpieces

Legal Events

Date Code Title Description
ST Notification of lapse