Seamless metal tube producing method

The present invention relates to a making method for a seamless metallic tube with a tilting roll type piercing rolling mill (piercer). According to the making method for a seamless metallic tube of the present invention, the rotary forging effect and the circumferential shearing strain can be signi...

Full description

Saved in:
Bibliographic Details
Main Authors ANRAKU TOSHIRO, YAMAKAWA TOMIO, SHIMODA KAZUHIRO, NAKAIKE HIROTSUGU
Format Patent
LanguageChinese
English
Published 23.07.2008
Subjects
FORGE FURNACES
FORGING
HAMMERING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PRESSING METAL
PUNCHING METAL
RIVETING
ROLLING OF METAL
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:The present invention relates to a making method for a seamless metallic tube with a tilting roll type piercing rolling mill (piercer). According to the making method for a seamless metallic tube of the present invention, the rotary forging effect and the circumferential shearing strain can be significantly suppressed without generating uncompleted engagement of a billet. Accordingly, a product having reduced inside defects and excellent inside quality can be produced in high productivity. Further, by strengthening a plug nose rolling portion, a sharpened plug nose is obtained and an engagement limit can be increased. Additionally, a product further excellent in the inside quality can be efficiently produced. Accordingly, the present invention can be applied to wide fields of the piercing rolling of the seamless metallic tube.
Bibliography:Application Number: CN20038105810