DK17088A - PROCEDURE AND MEASURES FOR DEFORMING BEETS - Google Patents

PROCEDURE AND MEASURES FOR DEFORMING BEETS

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Publication number
DK17088A
DK17088A DK17088A DK17088A DK17088A DK 17088 A DK17088 A DK 17088A DK 17088 A DK17088 A DK 17088A DK 17088 A DK17088 A DK 17088A DK 17088 A DK17088 A DK 17088A
Authority
DK
Denmark
Prior art keywords
pipe
conical
deformation
mandrel
die
Prior art date
Application number
DK17088A
Other languages
Danish (da)
Other versions
DK166659B1 (en
DK17088D0 (en
Inventor
Mogens Karkov Jacobsen
Original Assignee
Ebreti Aps
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 Ebreti Aps filed Critical Ebreti Aps
Priority to DK17088A priority Critical patent/DK166659B1/en
Publication of DK17088D0 publication Critical patent/DK17088D0/en
Publication of DK17088A publication Critical patent/DK17088A/en
Application granted granted Critical
Publication of DK166659B1 publication Critical patent/DK166659B1/en

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  • Forging (AREA)

Abstract

The manufacture of pipes by deformation, such as pipe sections in an expansion joint, is generally done by forging of the heated pipe sections. In so doing the material structure is significantly modified, however, which can lead to weaknesses in the finished fabrication. In order to avoid this, the pipe 6, 5 can, according to the invention, be deformed in a press by means of a mandrel 8, 13 or die 11, which is provided with a conical taper 9, 14 and a conical narrowing 10 respectively, both with a cone angle 16, 17, 18 of between 15 and 20 degrees. This simplifies deformation whilst allowing it to be performed without heating the pipe, thereby avoiding structural changes in the material and hence any weakness therein. The mandrel 8, 13 drifts the pipe 6, 5, when it is pressed into the pipe, whilst the conical narrowing 10 of the die 11 presses the pipe 1 in and forms the conical end 2. This can happen because the material is rendered plastic owing to the heat generated by the deformation resistance. <IMAGE>
DK17088A 1988-01-14 1988-01-14 Method and means for deformation of pipes DK166659B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK17088A DK166659B1 (en) 1988-01-14 1988-01-14 Method and means for deformation of pipes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK17088 1988-01-14
DK17088A DK166659B1 (en) 1988-01-14 1988-01-14 Method and means for deformation of pipes

Publications (3)

Publication Number Publication Date
DK17088D0 DK17088D0 (en) 1988-01-14
DK17088A true DK17088A (en) 1989-07-15
DK166659B1 DK166659B1 (en) 1993-06-28

Family

ID=8090563

Family Applications (1)

Application Number Title Priority Date Filing Date
DK17088A DK166659B1 (en) 1988-01-14 1988-01-14 Method and means for deformation of pipes

Country Status (1)

Country Link
DK (1) DK166659B1 (en)

Also Published As

Publication number Publication date
DK166659B1 (en) 1993-06-28
DK17088D0 (en) 1988-01-14

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PUP Patent expired