ATE300366T1 - METHOD AND APPARATUS FOR ROLL FORMING STEEL TUBES - Google Patents
METHOD AND APPARATUS FOR ROLL FORMING STEEL TUBESInfo
- Publication number
- ATE300366T1 ATE300366T1 AT99917140T AT99917140T ATE300366T1 AT E300366 T1 ATE300366 T1 AT E300366T1 AT 99917140 T AT99917140 T AT 99917140T AT 99917140 T AT99917140 T AT 99917140T AT E300366 T1 ATE300366 T1 AT E300366T1
- Authority
- AT
- Austria
- Prior art keywords
- forming
- roll
- zone
- bend
- target
- Prior art date
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
It is an object of the present invention to provide a novel roll-forming method for steel pipes and equipment for same with which (1) the evidence that forming work in the FF forming method is mainly carried out at the cluster forming portion showi ng the poor formability is modified and improved without any deteriorating the advantage of the common-utilization of rolls in the FF forming method which employs basically the circular-bend method, and (2) the forming function at the breakdown forming portion is enhanced. Accordingly, the pinch-point formed by the upper and lower rolls i s set at a boundary area between the target forming zone in the material's width direction and previously-formed zone or un-formed zone. The target forming zone is wound around a certain caliber of the upper roll on the bend-inner side, and bend-formed in such a way that the target forming zone is almost in non-contact with the lower roll. A s a result, the formability is remarkably improved and occurrences of roll flaws and roll marks or buckling can be prevented.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09757599A JP4906986B2 (en) | 1999-04-05 | 1999-04-05 | Roll forming method |
| JP11097577A JP2000288634A (en) | 1999-04-05 | 1999-04-05 | Roll forming method and roll forming stand |
| PCT/JP1999/002186 WO2000059653A1 (en) | 1999-04-05 | 1999-04-23 | Method for roll forming steel pipes, and equipment for same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE300366T1 true ATE300366T1 (en) | 2005-08-15 |
Family
ID=26438740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT99917140T ATE300366T1 (en) | 1999-04-05 | 1999-04-23 | METHOD AND APPARATUS FOR ROLL FORMING STEEL TUBES |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1169149B1 (en) |
| AT (1) | ATE300366T1 (en) |
| CA (1) | CA2270097C (en) |
| DE (1) | DE69926406T2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5470841B2 (en) | 2008-12-26 | 2014-04-16 | 新日鐵住金株式会社 | Roll bending apparatus for steel plate for cylinder pipe and roll bending method for steel plate for cylinder pipe using the same |
| DE102020215091A1 (en) | 2020-12-01 | 2022-06-02 | Sms Group Gmbh | Process for preforming sheet metal and computer program and device for carrying out the process |
-
1999
- 1999-04-23 AT AT99917140T patent/ATE300366T1/en active
- 1999-04-23 DE DE69926406T patent/DE69926406T2/en not_active Expired - Lifetime
- 1999-04-23 CA CA 2270097 patent/CA2270097C/en not_active Expired - Fee Related
- 1999-04-23 EP EP99917140A patent/EP1169149B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2270097C (en) | 2006-01-24 |
| EP1169149A1 (en) | 2002-01-09 |
| DE69926406T2 (en) | 2006-05-24 |
| DE69926406D1 (en) | 2005-09-01 |
| EP1169149B1 (en) | 2005-07-27 |
| CA2270097A1 (en) | 2000-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| UEP | Publication of translation of european patent specification |
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