NL7906079A - Metal pipe bending system - moves pipes through heater and cooler units causing plastic deformation whilst bending during compensating radius deviation - Google Patents

Metal pipe bending system - moves pipes through heater and cooler units causing plastic deformation whilst bending during compensating radius deviation

Info

Publication number
NL7906079A
NL7906079A NL7906079A NL7906079A NL7906079A NL 7906079 A NL7906079 A NL 7906079A NL 7906079 A NL7906079 A NL 7906079A NL 7906079 A NL7906079 A NL 7906079A NL 7906079 A NL7906079 A NL 7906079A
Authority
NL
Netherlands
Prior art keywords
pipe
plastic deformation
heater
pipes
moves
Prior art date
Application number
NL7906079A
Other languages
Dutch (nl)
Other versions
NL178659C (en
NL178659B (en
Original Assignee
Daiichi Koshuha Kogyo Kk
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 JP8375674A external-priority patent/JPS5112369A/en
Priority claimed from JP10487474A external-priority patent/JPS5132473A/en
Priority claimed from JP10487374A external-priority patent/JPS5131667A/en
Priority claimed from JP11569174U external-priority patent/JPS5144739U/ja
Priority claimed from JP6495675A external-priority patent/JPS51140862A/en
Priority claimed from NLAANVRAGE7508788,A external-priority patent/NL177088C/en
Application filed by Daiichi Koshuha Kogyo Kk filed Critical Daiichi Koshuha Kogyo Kk
Priority to NLAANVRAGE7906079,A priority Critical patent/NL178659C/en
Publication of NL7906079A publication Critical patent/NL7906079A/en
Publication of NL178659B publication Critical patent/NL178659B/en
Application granted granted Critical
Publication of NL178659C publication Critical patent/NL178659C/en

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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • B21D7/025—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and pulling or pushing the ends of the work

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The method is intended for bending a metal pipe (1), or rod. The pipe is made to pass through annular heating device (5) where a short portion of the pipe is heated, and then through adjacent cooling device (6). The forward end or the desired portion of the pipe is then made to pass through a curved path by means of a rotatable (8) arm (7) to which the pipe is secured (9). A bending moment acting on the pipe causes plastic deformation as it passes through the heating zone, the amount by which the pipe is bent in that zone being adjusted so as to compensate deviations of the curvature radius from the desired constant value.
NLAANVRAGE7906079,A 1974-07-23 1979-08-08 DEVICE FOR WARM-BENDING METAL PIPES. NL178659C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7906079,A NL178659C (en) 1974-07-23 1979-08-08 DEVICE FOR WARM-BENDING METAL PIPES.

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP8375674A JPS5112369A (en) 1974-07-23 1974-07-23 NETSUKANMAGE SOCHI
JP10487474A JPS5132473A (en) 1974-09-13 1974-09-13 KINZOKUKANTONOMAGE KAKOHO OYOBI DOSOCHI
JP10487374A JPS5131667A (en) 1974-09-13 1974-09-13 KINZOKUKANNOMAGEKAKOHO OYOBI DOSOCHI
JP11569174U JPS5144739U (en) 1974-09-27 1974-09-27
JP6495675A JPS51140862A (en) 1975-05-30 1975-05-30 Method of bending metal bar material
NLAANVRAGE7508788,A NL177088C (en) 1974-07-23 1975-07-23 Apparatus for hot bending of metal pipes.
NLAANVRAGE7906079,A NL178659C (en) 1974-07-23 1979-08-08 DEVICE FOR WARM-BENDING METAL PIPES.

Publications (3)

Publication Number Publication Date
NL7906079A true NL7906079A (en) 1979-12-28
NL178659B NL178659B (en) 1985-12-02
NL178659C NL178659C (en) 1986-05-01

Family

ID=27550998

Family Applications (3)

Application Number Title Priority Date Filing Date
NLAANVRAGE7906080,A NL182378C (en) 1974-07-23 1979-08-08 Apparatus for hot bending of metal pipes or tubes.
NLAANVRAGE7906077,A NL182706C (en) 1974-07-23 1979-08-08 Apparatus for hot bending of metal pipes.
NLAANVRAGE7906079,A NL178659C (en) 1974-07-23 1979-08-08 DEVICE FOR WARM-BENDING METAL PIPES.

Family Applications Before (2)

Application Number Title Priority Date Filing Date
NLAANVRAGE7906080,A NL182378C (en) 1974-07-23 1979-08-08 Apparatus for hot bending of metal pipes or tubes.
NLAANVRAGE7906077,A NL182706C (en) 1974-07-23 1979-08-08 Apparatus for hot bending of metal pipes.

Country Status (1)

Country Link
NL (3) NL182378C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104690117A (en) * 2015-03-27 2015-06-10 华电重工股份有限公司 Ultralarge-radius bend and manufacturing method thereof of large-diameter thick-wall steel pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104690117A (en) * 2015-03-27 2015-06-10 华电重工股份有限公司 Ultralarge-radius bend and manufacturing method thereof of large-diameter thick-wall steel pipe

Also Published As

Publication number Publication date
NL178659C (en) 1986-05-01
NL182706C (en) 1988-05-02
NL182706B (en) 1987-12-01
NL182378C (en) 1988-03-01
NL7906080A (en) 1979-12-28
NL178659B (en) 1985-12-02
NL182378B (en) 1987-10-01
NL7906077A (en) 1979-12-28

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V1 Lapsed because of non-payment of the annual fee