FR2233112A1 - Method of deforming or expanding tubes - uses mandrel induction heated by H.F. electric supply inserted in tube - Google Patents

Method of deforming or expanding tubes - uses mandrel induction heated by H.F. electric supply inserted in tube

Info

Publication number
FR2233112A1
FR2233112A1 FR7321252A FR7321252A FR2233112A1 FR 2233112 A1 FR2233112 A1 FR 2233112A1 FR 7321252 A FR7321252 A FR 7321252A FR 7321252 A FR7321252 A FR 7321252A FR 2233112 A1 FR2233112 A1 FR 2233112A1
Authority
FR
France
Prior art keywords
tube
mandrel
electric supply
deforming
induction heated
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
FR7321252A
Other languages
French (fr)
Other versions
FR2233112B1 (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.)
MR HOVE MICHEL
Original Assignee
MR HOVE MICHEL
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 MR HOVE MICHEL filed Critical MR HOVE MICHEL
Priority to FR7321252A priority Critical patent/FR2233112A1/en
Publication of FR2233112A1 publication Critical patent/FR2233112A1/en
Application granted granted Critical
Publication of FR2233112B1 publication Critical patent/FR2233112B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

A mandrel whose section is the shape required for the tube is inserted into the tube end. The mandrel is heated by an induction heater of internal diameter slightly larger than the required tube outer diameter. The heater is powered by high frequency electric supply. When the mandrel is hot enough, the tube or the mandrel is moved to deform the tube. Either the tube or the mandrel is held stationary. Only the only the end of the tube is deformed, or the mandrel can be drawn completely through, expanding the tube. Channels within the mandrel deliver inert gas, for example argon, to the mandrel/tube interface to protect the tube. The mandrel is made of high resistivity material with good wear resistance properties.
FR7321252A 1973-06-12 1973-06-12 Method of deforming or expanding tubes - uses mandrel induction heated by H.F. electric supply inserted in tube Granted FR2233112A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7321252A FR2233112A1 (en) 1973-06-12 1973-06-12 Method of deforming or expanding tubes - uses mandrel induction heated by H.F. electric supply inserted in tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7321252A FR2233112A1 (en) 1973-06-12 1973-06-12 Method of deforming or expanding tubes - uses mandrel induction heated by H.F. electric supply inserted in tube

Publications (2)

Publication Number Publication Date
FR2233112A1 true FR2233112A1 (en) 1975-01-10
FR2233112B1 FR2233112B1 (en) 1979-01-26

Family

ID=9120801

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7321252A Granted FR2233112A1 (en) 1973-06-12 1973-06-12 Method of deforming or expanding tubes - uses mandrel induction heated by H.F. electric supply inserted in tube

Country Status (1)

Country Link
FR (1) FR2233112A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462719A2 (en) * 1990-06-07 1991-12-27 Mcdermott International, Inc. Conductor guide forming machine
CN104550516A (en) * 2014-12-15 2015-04-29 南京航空航天大学 Steel pipe cold diameter expanding straightening method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341894A (en) * 1963-11-20 1967-09-19 Phillips Petroleum Co Flaring plastic pipe ends

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341894A (en) * 1963-11-20 1967-09-19 Phillips Petroleum Co Flaring plastic pipe ends

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462719A2 (en) * 1990-06-07 1991-12-27 Mcdermott International, Inc. Conductor guide forming machine
EP0462719A3 (en) * 1990-06-07 1992-01-15 Mcdermott International, Inc. Conductor guide forming machine
CN104550516A (en) * 2014-12-15 2015-04-29 南京航空航天大学 Steel pipe cold diameter expanding straightening method
CN104550516B (en) * 2014-12-15 2016-07-06 南京航空航天大学 The cold expanding method for aligning of steel pipe

Also Published As

Publication number Publication date
FR2233112B1 (en) 1979-01-26

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Legal Events

Date Code Title Description
TP Transmission of property
CL Concession to grant licenses
CL Concession to grant licenses
ST Notification of lapse