FR2182053A1 - Heat treating workpieces - by hot gas in open ended cylinders intermittently rolling down inclined furnace floor - Google Patents

Heat treating workpieces - by hot gas in open ended cylinders intermittently rolling down inclined furnace floor

Info

Publication number
FR2182053A1
FR2182053A1 FR7314931A FR7314931A FR2182053A1 FR 2182053 A1 FR2182053 A1 FR 2182053A1 FR 7314931 A FR7314931 A FR 7314931A FR 7314931 A FR7314931 A FR 7314931A FR 2182053 A1 FR2182053 A1 FR 2182053A1
Authority
FR
France
Prior art keywords
hot gas
cylinders
heat treating
open ended
rolling down
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
FR7314931A
Other languages
French (fr)
Other versions
FR2182053B3 (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.)
SKF Industrial Trading and Development Co BV
Original Assignee
SKF Industrial Trading and Development Co BV
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 SKF Industrial Trading and Development Co BV filed Critical SKF Industrial Trading and Development Co BV
Publication of FR2182053A1 publication Critical patent/FR2182053A1/en
Application granted granted Critical
Publication of FR2182053B3 publication Critical patent/FR2182053B3/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)

Abstract

Appts. for heat treating workpieces in a furance using a hot gas flow comprises a number of cylindrical vessels which contain the workpieces, and which can roll down th inclined furance sole on guides; the ends of these cylinders have openings through which the hot gas can flow. Pref. the upper end of the inclined slope has a feed opening to receive the cylinders, while the lower end has a discharge opening closed by a gate through which the cylinders are discharged. With this arrangement, no mechanical means are required to propel the cylinders through the furnace; also the rolling action causes considerable mixing of the workpiece of the cylinders, thus ensuring uniform heat treatment.
FR7314931A 1972-04-26 1973-04-25 Heat treating workpieces - by hot gas in open ended cylinders intermittently rolling down inclined furnace floor Granted FR2182053A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6829272A IT954770B (en) 1972-04-26 1972-04-26 CONTINUOUS OVEN FOR CEMENTATION OF SMALL AND MEDIUM-SIZED PIECES

Publications (2)

Publication Number Publication Date
FR2182053A1 true FR2182053A1 (en) 1973-12-07
FR2182053B3 FR2182053B3 (en) 1975-10-24

Family

ID=11308867

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7314931A Granted FR2182053A1 (en) 1972-04-26 1973-04-25 Heat treating workpieces - by hot gas in open ended cylinders intermittently rolling down inclined furnace floor

Country Status (3)

Country Link
DE (1) DE2321132C3 (en)
FR (1) FR2182053A1 (en)
IT (1) IT954770B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803455C2 (en) * 1978-01-27 1982-08-26 Elino Industrie Ofenbau Carl Hanf GmbH + Co, 5160 Düren Workpiece carrier

Also Published As

Publication number Publication date
FR2182053B3 (en) 1975-10-24
DE2321132B2 (en) 1974-09-05
DE2321132C3 (en) 1975-04-17
IT954770B (en) 1973-09-15
DE2321132A1 (en) 1973-11-15

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