FR2267379A1 - Continuous annealing of tubes or hollow parts with descaling - non-oxidising gas fed through tube to descale the bore - Google Patents

Continuous annealing of tubes or hollow parts with descaling - non-oxidising gas fed through tube to descale the bore

Info

Publication number
FR2267379A1
FR2267379A1 FR7507931A FR7507931A FR2267379A1 FR 2267379 A1 FR2267379 A1 FR 2267379A1 FR 7507931 A FR7507931 A FR 7507931A FR 7507931 A FR7507931 A FR 7507931A FR 2267379 A1 FR2267379 A1 FR 2267379A1
Authority
FR
France
Prior art keywords
gas
tube
descaling
coils
bore
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.)
Withdrawn
Application number
FR7507931A
Other languages
French (fr)
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.)
Vodafone GmbH
Original Assignee
Mannesmannroehren Werke AG
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
Priority claimed from DE19742418495 external-priority patent/DE2418495C2/en
Application filed by Mannesmannroehren Werke AG filed Critical Mannesmannroehren Werke AG
Publication of FR2267379A1 publication Critical patent/FR2267379A1/en
Withdrawn legal-status Critical Current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
    • 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

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)
  • Furnace Details (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

The device for the continuous annealing of tubes and hollow parts, esp. coils of tubing, in a reactive gas for surface descaling and where a non-oxidising gas is fed through the tube to descalel the bore, has a flexible gas supply device fed through the furnace simultaneously with the coils of tubing, the gas supply device being provided with connections for joining it to the coils. The gas supply device can be located above or below the roller hearth, and if a furnace with a moving wall is used, the gas connections can be fixed to the moving wall, using a rotary connection to the gas source. Alternatively, the gas manifold pipe can travel through a stationary gas supply chamber fitted with a gas inlet. The device is used for descaling tube coils before precision drawing.
FR7507931A 1974-04-11 1975-03-13 Continuous annealing of tubes or hollow parts with descaling - non-oxidising gas fed through tube to descale the bore Withdrawn FR2267379A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742418495 DE2418495C2 (en) 1974-04-11 Device for the continuous annealing of tubes and hollow bodies

Publications (1)

Publication Number Publication Date
FR2267379A1 true FR2267379A1 (en) 1975-11-07

Family

ID=5913126

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7507931A Withdrawn FR2267379A1 (en) 1974-04-11 1975-03-13 Continuous annealing of tubes or hollow parts with descaling - non-oxidising gas fed through tube to descale the bore

Country Status (8)

Country Link
JP (1) JPS50133910A (en)
AT (1) AT344224B (en)
BE (1) BE826496A (en)
DK (1) DK153675A (en)
FR (1) FR2267379A1 (en)
IT (1) IT1037101B (en)
NL (1) NL7502500A (en)
SE (1) SE7502840L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003069011A1 (en) * 2002-02-13 2003-08-21 Sumitomo Metal Industries, Ltd. METHOD FOR HEAT TREATING Ni BASE ALLOY PIPE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS536212A (en) * 1976-07-08 1978-01-20 Kobe Steel Ltd Continuous bright annealing method and apparatus therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003069011A1 (en) * 2002-02-13 2003-08-21 Sumitomo Metal Industries, Ltd. METHOD FOR HEAT TREATING Ni BASE ALLOY PIPE
US7037390B2 (en) 2002-02-13 2006-05-02 Sumitomo Metal Industries, Ltd. Method of heat treatment for Ni-base alloy tube

Also Published As

Publication number Publication date
NL7502500A (en) 1975-10-14
SE7502840L (en) 1975-10-13
BE826496A (en) 1975-06-30
ATA105175A (en) 1977-11-15
DE2418495B1 (en) 1975-07-10
DE2418495A1 (en) 1975-07-10
JPS50133910A (en) 1975-10-23
AT344224B (en) 1978-07-10
IT1037101B (en) 1979-11-10
DK153675A (en) 1975-10-12

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Legal Events

Date Code Title Description
RE Withdrawal of published application