FR2431548A1 - Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley - Google Patents

Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley

Info

Publication number
FR2431548A1
FR2431548A1 FR7821162A FR7821162A FR2431548A1 FR 2431548 A1 FR2431548 A1 FR 2431548A1 FR 7821162 A FR7821162 A FR 7821162A FR 7821162 A FR7821162 A FR 7821162A FR 2431548 A1 FR2431548 A1 FR 2431548A1
Authority
FR
France
Prior art keywords
pipe
pipes
trolley
gas
centering
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
FR7821162A
Other languages
French (fr)
Other versions
FR2431548B1 (en
Inventor
S A Svetlov
V S Mokin
M S Shneiderman
M G Selnitsyn
V A Lupin
T I Penyaskin
G P Stepanov
I Y Reger
N I Timkin
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.)
CH GI
Original Assignee
CH GI
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 CH GI filed Critical CH GI
Priority to FR7821162A priority Critical patent/FR2431548A1/en
Publication of FR2431548A1 publication Critical patent/FR2431548A1/en
Application granted granted Critical
Publication of FR2431548B1 publication Critical patent/FR2431548B1/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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • 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
    • C23C8/04—Treatment of selected surface areas, e.g. using masks
    • 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)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Induction Heating (AREA)

Abstract

The appts resembles a lathe, where two centering pipes are used to feed gas through the bore of the pipe/being case hardened. Each pipe is mounted on a block driven axially w.r.t. one pipe by a work cylinder, to clamp the pipe between the centres; and each block has a drive unit which rotates the centres and therefore the pipe. A trolley is driven in a direction parallel with the axis of the pipe, and is fitted with a ring induction, heater and a ring spray for coolant used to quench the pipe. The centering pipe used as the gas inlet pref contains an internal jacket through which cooling water flows to keep the gas cool before it enters the pipe; and the trolley pref. carries rollers it enters to support the pipe, esp while the latter is hot. Automatic case hardening of long pipes which are supported during the process so they do not kink or bend.
FR7821162A 1978-07-17 1978-07-17 Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley Granted FR2431548A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7821162A FR2431548A1 (en) 1978-07-17 1978-07-17 Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7821162A FR2431548A1 (en) 1978-07-17 1978-07-17 Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley

Publications (2)

Publication Number Publication Date
FR2431548A1 true FR2431548A1 (en) 1980-02-15
FR2431548B1 FR2431548B1 (en) 1981-02-06

Family

ID=9210797

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7821162A Granted FR2431548A1 (en) 1978-07-17 1978-07-17 Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley

Country Status (1)

Country Link
FR (1) FR2431548A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792806A (en) * 1951-10-08 1957-05-21 Ohio Commw Eng Co Apparatus for plating the interior of hollow objects
FR1335750A (en) * 1962-10-03 1963-08-23 Thomson Houston Comp Francaise Improvements in the manufacturing process of tungsten tubes
GB1309257A (en) * 1970-02-18 1973-03-07 Millingford Eng Co Ltd Method of nitriding hollow bodies
DE2445564A1 (en) * 1974-09-24 1976-04-01 Siemens Ag Chemical vapour deposition processes for coating bores of tubes - tantalum coating obtd. by decompsn. of its chloride

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792806A (en) * 1951-10-08 1957-05-21 Ohio Commw Eng Co Apparatus for plating the interior of hollow objects
FR1335750A (en) * 1962-10-03 1963-08-23 Thomson Houston Comp Francaise Improvements in the manufacturing process of tungsten tubes
GB1309257A (en) * 1970-02-18 1973-03-07 Millingford Eng Co Ltd Method of nitriding hollow bodies
DE2445564A1 (en) * 1974-09-24 1976-04-01 Siemens Ag Chemical vapour deposition processes for coating bores of tubes - tantalum coating obtd. by decompsn. of its chloride

Also Published As

Publication number Publication date
FR2431548B1 (en) 1981-02-06

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Legal Events

Date Code Title Description
ST Notification of lapse