[go: up one dir, main page]

FR2447968A1 - 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 - Google Patents

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

Info

Publication number
FR2447968A1
FR2447968A1 FR7902257A FR7902257A FR2447968A1 FR 2447968 A1 FR2447968 A1 FR 2447968A1 FR 7902257 A FR7902257 A FR 7902257A FR 7902257 A FR7902257 A FR 7902257A FR 2447968 A1 FR2447968 A1 FR 2447968A1
Authority
FR
France
Prior art keywords
particles
heated
stream
induction
fluidised bed
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
FR7902257A
Other languages
French (fr)
Other versions
FR2447968B1 (en
Inventor
Michel Tamalet
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.)
Celes SA
Original Assignee
Celes 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 Celes SA filed Critical Celes SA
Priority to FR7902257A priority Critical patent/FR2447968A1/en
Publication of FR2447968A1 publication Critical patent/FR2447968A1/en
Application granted granted Critical
Publication of FR2447968B1 publication Critical patent/FR2447968B1/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • 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
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • 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
    • C21D1/62—Quenching devices
    • 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
    • Y02P10/25—Process efficiency

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)

Abstract

Surface of a steel workpiece is heated by induction and then immediately quenched via particles, which pref. form either a fluidised bed or a stream of particles impinging on the hot piece. Particles may be heated to achieve isothermal quenching of the surface of the piece. Process may either be discontinuous, where the piece and an induction coil are immersed in a vessel in which particles are fluidised after the heating coil has been switched off; or continuous, where the piece travels through an induction coil and then through a fluidised bed. Particles used in the bed are pref. fluisided by a stream of protective or inert gas. Surface induction hardening of steels is normally restricted to pieces contg. max. 0.4% C, because quenching, e.g. in water, tends to cause cracks in steels contg. over 0.4% C. With the invention, steels of 0.4-1.0% C can be surface hardened to 64Rc without cracking.
FR7902257A 1979-01-30 1979-01-30 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 Granted FR2447968A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7902257A FR2447968A1 (en) 1979-01-30 1979-01-30 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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7902257A FR2447968A1 (en) 1979-01-30 1979-01-30 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

Publications (2)

Publication Number Publication Date
FR2447968A1 true FR2447968A1 (en) 1980-08-29
FR2447968B1 FR2447968B1 (en) 1983-02-11

Family

ID=9221328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7902257A Granted FR2447968A1 (en) 1979-01-30 1979-01-30 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

Country Status (1)

Country Link
FR (1) FR2447968A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262324A1 (en) * 1986-09-30 1988-04-06 Union Carbide Corporation Process for rapid quenching in a fluidized bed
CN104404209A (en) * 2014-12-11 2015-03-11 山东大学 Diamond type solid quenching medium and preparation method and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE688000C (en) * 1936-03-28 1940-02-10 Friedrich Theodor Burgard Device for hardening steel wires
FR1600086A (en) * 1968-12-30 1970-07-20
DE2435132A1 (en) * 1974-07-22 1976-02-12 Aeg Elotherm Gmbh Heat-treatment of metal parts - where rapid cooling is achieved using a gas-stream contg. copper powder
DE2455280A1 (en) * 1974-11-22 1976-05-26 Aeg Elotherm Gmbh Controlled cooling of induction-heated components - by immersion in a fluidised bed of copper powder in air

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE688000C (en) * 1936-03-28 1940-02-10 Friedrich Theodor Burgard Device for hardening steel wires
FR1600086A (en) * 1968-12-30 1970-07-20
DE2435132A1 (en) * 1974-07-22 1976-02-12 Aeg Elotherm Gmbh Heat-treatment of metal parts - where rapid cooling is achieved using a gas-stream contg. copper powder
DE2455280A1 (en) * 1974-11-22 1976-05-26 Aeg Elotherm Gmbh Controlled cooling of induction-heated components - by immersion in a fluidised bed of copper powder in air

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262324A1 (en) * 1986-09-30 1988-04-06 Union Carbide Corporation Process for rapid quenching in a fluidized bed
CN104404209A (en) * 2014-12-11 2015-03-11 山东大学 Diamond type solid quenching medium and preparation method and application thereof
CN104404209B (en) * 2014-12-11 2016-07-06 山东大学 Diamond-type solid quenching medium and preparation method and application

Also Published As

Publication number Publication date
FR2447968B1 (en) 1983-02-11

Similar Documents

Publication Publication Date Title
DE3864007D1 (en) METHOD FOR HEAT TREATING METAL WORKPIECES.
FR2448573A1 (en) Continuous automatic heat treatment plant - using row of fluidised beds, esp. for isothermal treatment of steel in absence of air
GB1467576A (en) Process for the heat treatment of rails
ES8304211A1 (en) Process for the improved heat treatment of steels using direct electrical resistance heating
ATE16118T1 (en) PROCESS FOR HEAT TREATMENT OF METAL WORKPIECES BY CARBURIZING.
GB1178338A (en) A Method of and Apparatus for Inductively Heat Treating Steel Workpieces.
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
ES435749A1 (en) Method of and apparatus for hardening workpieces of steel
JPS5725386A (en) Carbon deposition-preventing apparatus
JPS5582729A (en) Heat treating method for steel material
JPS5794516A (en) Method for heat treatment on low-carbon boron steel
JPS56150127A (en) Direct normalizing method
JPS5594444A (en) Production of high carbon hot rolled steel plate of high strength and toughness and good workability
JPS5456920A (en) Method of heat treatment of ralls
JPS5573822A (en) Heat treating method of welded steel pipe
DE3276438D1 (en) Process and apparatus for heat treating sections of ferrous workpieces
Cheng et al. Analysis of Quenching Cracks of Machine Tool-Piston Under Supersonic Frequency Induction Hardening
Wilks Heat Treating Steels by Heating Rapidly
SU602569A1 (en) Method of heat treatment of high-tensile martensitic steels
GB1267832A (en) Method of heat-treating a light gauge cold-framed workpiece of an unalloyed low carbon sheet
JPS5443810A (en) Treating method by induction heating
JPS55103272A (en) Treating method combining in-furnace brazing and soft-nitriding
Scherf et al. Heat Treatment of High-Speed Steel
Hlisnikovsky Heat Treatment of Sintered Steel
Seidel et al. Mathematical Prediction of Results of Induction Hardening

Legal Events

Date Code Title Description
ST Notification of lapse