DK17088A - PROCEDURE AND MEASURES FOR DEFORMING BEETS - Google Patents
PROCEDURE AND MEASURES FOR DEFORMING BEETSInfo
- 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
Links
Landscapes
- 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>
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) |
-
1988
- 1988-01-14 DK DK17088A patent/DK166659B1/en not_active IP Right Cessation
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 |