METHOD AND TOOL FOR PRESSING PIPES WITH OUTER BULGES Russian patent published in 2010 - IPC B21C25/00

Abstract RU 2401172 C2

FIELD: metallurgy.

SUBSTANCE: pipe rolling is started when needle front collar stays in die working channel. Billet length is selected so that pipe front thin part is not smaller than pipe OD. Needle collar length is selected so that the distance from needle front edge to section wherein metal fluxion starts is not smaller than pipe bulge diametre.

EFFECT: reduced variation in wall thickness of pipe front end bulge, higher accuracy of sizes.

2 cl, 9 dwg

Similar patents RU2401172C2

Title	Year	Author	Number
METHOD FOR MAKING HOLLOW CYLINDRICAL ARTICLES	2002	Kavtaev E.E. Grishechkin A.I. Trubin A.N. Litvinov A.N. Smirnov V.G. Timofeev A.V. Shchapov V.A.	RU2216419C1
METHOD FOR MANUFACTURE OF LIGHT-ALLOY PIPES	1999	Pasechnik N.V. Sivak B.A. Shifrin I.N. Kurovich A.N. Shukhat O.M. Sergeev A.G. Malafeev V.A. Pogorelyj V.A. Lokotosh L.V.	RU2168382C1
METHOD OF MANUFACTURING SEAMLESS TUBES FROM CYLINDRICAL BILLETS OF HARD-TO-DEFORM METALS AND ALLOYS	2016	Kalinin Vladimir Sergeevich Shvechkov Aleksandr Anatolevich	RU2650474C2
METHOD OF PRODUCING FORMED TUBES WITH THICKENINGS	0	Kolkunov Evgenij Aleksandrovich	SU1458051A1
DEVICE FOR PRESSING PRECISION PIPES AND METHOD OF PRESSING PRECISION PIPES USING SAME	2015	Kosmatskij Yaroslav Igorevich Sherkunov Viktor Georgievich Alyushkaev Evgenij Aleksandrovich Fokin Nikolaj Vladimirovich Chivardin Konstantin Valerevich	RU2608110C1
APPARATUS FOR BACKWARD EXTRUSION OF THICK-WALL TUBES	2002	Klejnbug I.P. Zheleznjak L.M.	RU2252093C2
ARRANGEMENT FOR EXTRUSION OF TUBES HAVING INTERNAL THICKENING	0	Gajvoronskij Aleksandr Tikhonovich Prokopev Gennadij Anatolevich	SU1611484A1
APPARATUS FOR PRESSING TUBES	0	Druyan Vladimir Mikhajlovich Balakin Valerij Fedorovich Zhukovskij Yurij Borisovich Medvedev Mikhail Ivanovich Gulyaev Yurij Gennadevich Karpov Aleksandr Georgievich	SU774660A1
METHOD OF PRODUCING PRECISION TUBES AND DEVICE TO THIS END	2011	Antipov Vadim Vital'Evich Proskurin Roman Dmitrievich Safonov Vladimir Nikolaevich Kholzakov Aleksandr Valentinovich Shumikhin Jurij Vladimirovich	RU2503523C2
METHOD FOR PRODUCTION OF PIPES WITH INTERNAL HELICAL RIBBING AND DEVICE THEREFOR	2014	Kosmatskij Jaroslav Igorevich Vydrin Aleksandr Vladimirovich Perevozchikov Danil Viktorovich Tikhonova Margarita Aleksandrovna	RU2582842C1

RU 2 401 172 C2

Authors

Karanashev Ruslan Akhmedovich

Igumenov Aleksandr Aleksandrovich

Dates

2010-10-10—Published

2008-04-07—Filed