EP 0025394 B2 19890913 - COMPOSITE COMPACTING ROLL
Title (en)
COMPOSITE COMPACTING ROLL
Publication
Application
Priority
FR 7922444 A 19790907
Abstract (en)
[origin: EP0025394A1] 1. A composite compacting cylinder, comprising a shaft and a case (2) which is an interference fit on said shaft, said case (2) being itself composite and comprising a first outer layer (3) of a first material A, a second inner layer (4) of a second material B, the materials of said two layers being metallurgically bonded together prior to the mounting of the case on the shaft, characterized in that the second material B has a coefficient of linear expansion which is higher than that of the material A, so as to pre-stress the material A in compression prior to the mounting of the case on the shaft, the value of this compression pre-stressing being at least equal to the tensile stress produced when the composite case is mounted on the shaft.
IPC 1-7
IPC 8 full level
B21B 27/00 (2006.01); B30B 11/16 (2006.01)
CPC (source: EP)
B21B 27/00 (2013.01); B30B 11/165 (2013.01); B21B 2267/10 (2013.01)
Designated contracting state (EPC)
AT DE NL
DOCDB simple family (publication)
EP 0025394 A1 19810318; EP 0025394 B1 19840215; EP 0025394 B2 19890913; AT E6230 T1 19840315; BE 885101 A 19810305; CH 640177 A5 19831230; DE 3066603 D1 19840322; ES 495071 A0 19810616; ES 8105582 A1 19810616; FR 2464741 A1 19810320; FR 2464741 B1 19830624; IT 1147774 B 19861126; IT 8068385 A0 19800905; LU 82749 A1 19801215; MX 154296 A 19870629; ZA 805519 B 19810930
DOCDB simple family (application)
EP 80401261 A 19800904; AT 80401261 T 19800904; BE 201996 A 19800905; CH 668580 A 19800905; DE 3066603 T 19800904; ES 495071 A 19800905; FR 7922444 A 19790907; IT 6838580 A 19800905; LU 82749 A 19800904; MX 18382880 A 19800905; ZA 805519 A 19800908