EP 0509204 A3 19921216 - METHOD OF AND DEVICE FOR ROLLING HOT ROLLED BAR AND WIRE
Title (en)
METHOD OF AND DEVICE FOR ROLLING HOT ROLLED BAR AND WIRE
Publication
Application
Priority
DE 4112931 A 19910418
Abstract (en)
[origin: EP0509204A2] 2.1. Rolling is carried out up to a delivery cross-section of 900 mm<2> < A < 15,700 mm<2> on ungrooved rolls and before the transition to the sectional grooves, depending on material quality and the number of flat passes in one or two slightly indented grooves, a notched groove being predetermined by the ratio of emerging rolling-stock height (h1) to twice the turned-down depth (2t) of the roll, and this ratio lying within the range 2 </= h1/2t </= 10. In this arrangement, a 4-roller mounting is arranged on the entry side in the 1st roll stand during flattening and a double mounting is arranged in the subsequent roll stands, whereas on the exit side a stripper is provided. 2.2. The problem on which the invention is based is to simplify the division of the rolls and mountings and, by defined dimensioning of the first sectional groove, to eliminate the influence of the sharp edges from the last flat pass on the wear, and also to limit the diagonal distortion of the rolling stock. 2.3. The invention is applicable to continuous groups of stands, reversing two-high mills and three-high mills.
IPC 1-7
IPC 8 full level
B21B 1/20 (2006.01); B21B 1/18 (2006.01); B21B 39/16 (2006.01)
CPC (source: EP)
B21B 1/18 (2013.01); B21B 39/165 (2013.01)
Citation (search report)
- [AD] DE 3224022 A1 19830210 - KAWASAKI STEEL CO [JP]
- [X] DE 2542313 A1 19760408 - METALFORM AB
- [A] US 3600924 A 19710824 - MARTIN DENZIL O
- [A] DE 2437545 B2 19780413
- [A] PATENT ABSTRACTS OF JAPAN vol. 9, no. 202 (M-405)(1925) 20. August 1985 & JP-A-60 064 704 ( SUMITOMO KINZOKU KOGYO ) 13. April 1985
- [A] PATENT ABSTRACTS OF JAPAN vol. 7, no. 102 (M-211)(1247) 30. April 1983 & JP-A-58 023 501 ( KAWASAKI SEITETSU KK ) 12. Februar 1983
Designated contracting state (EPC)
AT CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0509204 A2 19921021; EP 0509204 A3 19921216; EP 0509204 B1 19950419; AT E121322 T1 19950515; CS 119192 A3 19921118; DE 4112931 A1 19921022; DE 59201943 D1 19950524; RU 2105619 C1 19980227; SK 279259 B6 19980805
DOCDB simple family (application)
EP 92102242 A 19920211; AT 92102242 T 19920211; CS 119192 A 19920417; DE 4112931 A 19910418; DE 59201943 T 19920211; SK 119192 A 19920417; SU 5011342 A 19920417