UA79553U - Method for piercing billet in mill of helical rolling - Google Patents

Method for piercing billet in mill of helical rolling

Info

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
Application number
UAU201212425U
Other languages
Russian (ru)
Ukrainian (uk)
Inventor
Марк Исаакович Ханин
Иван Петрович Бойко
Олег Владимирович Бражник
Иван Владимирович Донской
Original Assignee
Марк Исаакович Ханин
Иван Петрович Бойко
Олег Владимирович Бражник
Иван Владимирович Донской
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 Марк Исаакович Ханин, Иван Петрович Бойко, Олег Владимирович Бражник, Иван Владимирович Донской filed Critical Марк Исаакович Ханин
Priority to UAU201212425U priority Critical patent/UA79553U/en
Publication of UA79553U publication Critical patent/UA79553U/en

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.
UAU201212425U 2012-10-30 2012-10-30 Method for piercing billet in mill of helical rolling UA79553U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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