Global patent index - EP 1022068 A1

EP 1022068 A1 2000-07-26 - PIERCING MILL

Title (en)

PIERCING MILL

Title (de)

LOCHWALZWERK

Title (fr)

LAMINOIR PERCEUR

Publication

EP 1022068 A1 (EN)

Application

EP 98947859 A

Priority

  • JP 9804630 W
  • JP 28002097 A

Abstract (en)

A piercing mill, which can manufacture thin-wall tubes, can secure a sufficient support rigidity of disk roller, and can improve the ease of work for adjusting the position of the disk rollers. The piercing mill compresses a mill housing, a pair of disk frames 6 which can be opened sideward in a pivoting manner with reference to a pass line, and a pair of sliding frames 8 which are vertically arranged within each of the disk frames so as to be slidable. A skew angle of the disk roller 4 is set by sliding the sliding frames in opposite directions. The piercing mill improve the ease of work for positional adjustment required when the disk rollers are exchanged. In addition, since the skew angle of the disk roller can be set easily and reliably, the range of thin-wall tube rolling can be expanded. <IMAGE>

IPC 1-7 (main, further and additional classification)

B21B 19/04

IPC 8 full level (invention and additional information)

B21B 19/04 (2006.01); B21B 31/08 (2006.01)

CPC (invention and additional information)

B21B 19/04 (2013.01); B21B 31/08 (2013.01)

Designated contracting state (EPC)

DE

EPO simple patent family

WO 9919093 A1 19990422; EP 1022068 A1 20000726; EP 1022068 A4 20020116; JP 3239896 B2 20011217

INPADOC legal status

2002-04-10 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20020219

2002-01-16 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20011205

2002-01-16 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE

2000-07-26 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000504

2000-07-26 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE