UA79553U - Method for piercing billet in mill of helical rolling - Google Patents
Method for piercing billet in mill of helical rollingInfo
- Publication number
- UA79553U UA79553U UAU201212425U UAU201212425U UA79553U UA 79553 U UA79553 U UA 79553U UA U201212425 U UAU201212425 U UA U201212425U UA U201212425 U UAU201212425 U UA U201212425U UA 79553 U UA79553 U UA 79553U
- Authority
- UA
- Ukraine
- Prior art keywords
- billet
- rolls
- piercing
- rotation
- value
- Prior art date
Links
Abstract
A method for piercing a billet in a mill of helical rolling comprises deformation of a billet by rolls, which rotate and impart translational and rotational motion to the billet during the entire process, and a piercing mandrel rotating during entire time of its contact with a metal together with an anvil is characterized in that during transient filling process of the deformation zone gripping of a billet by rolls is carried out at a frequency of rotation of the rolls, which amounts to 0.70-0.85 of its value in a steady process of piercing, after hitting the front end of the billet with a tip of roll mandrel the frequency of rotation is increased to the value of a steady process, and from the beginning of the transient process of the release of the deformation zone the speed of rotation of rolls is reduced to its value at gripping the billet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
UAU201212425U UA79553U (en) | 2012-10-30 | 2012-10-30 | Method for piercing billet in mill of helical rolling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
UAU201212425U UA79553U (en) | 2012-10-30 | 2012-10-30 | Method for piercing billet in mill of helical rolling |
Publications (1)
Publication Number | Publication Date |
---|---|
UA79553U true UA79553U (en) | 2013-04-25 |
Family
ID=51950711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
UAU201212425U UA79553U (en) | 2012-10-30 | 2012-10-30 | Method for piercing billet in mill of helical rolling |
Country Status (1)
Country | Link |
---|---|
UA (1) | UA79553U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2638468C1 (en) * | 2016-08-23 | 2017-12-13 | Публичное акционерное общество "Северский трубный завод" (ПАО "СТЗ") | Method of screw broaching of blank |
-
2012
- 2012-10-30 UA UAU201212425U patent/UA79553U/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2638468C1 (en) * | 2016-08-23 | 2017-12-13 | Публичное акционерное общество "Северский трубный завод" (ПАО "СТЗ") | Method of screw broaching of blank |
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