Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CENTRIFUGALLY CAST COMPOSITE ROLL
Document Type and Number:
Japanese Patent JPH0860289
Kind Code:
A
Abstract:

PURPOSE: To produce a rolling roll small in uneven wear and excellent in surface roughening resistance by forming the compsn. of the external layer material of a roll of a specified high C-Fe-Cr material, suppressing the formation of M6C type carbides and dispersedly precipitating M7C3 type carbides.

CONSTITUTION: The compsn. of the external layer material of a roll is formed of a centrifugal casting material contg., by weight, 1.0 to 2.0% C, 0.1 to 3.0% Si, 0.1 to 2.O% Mn, 2.0 to 10.0% Cr, 0.1 to 10.0% Mo, 1.0 to 10.0% V and 0.1 to 10.0% W, furthermore satisfying the condition of Mo+W; ≤10.0%, and the balance Fe with inevitable impurities. This external layer material and an internal layer material constituted of cast iron or cast steel are welded and integrated by a centrifugal casting method to form into a solid or hollow composite roll. Or, it is possible that the external layer material is used as a sleeve and is assembled integrally with a shaft material by a shrinking method or the like to form into a roll.


More Like This:
Inventors:
TAKIGAWA HIROSHI
HASHIMOTO MITSUO
Application Number:
JP19959094A
Publication Date:
March 05, 1996
Filing Date:
August 24, 1994
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON STEEL CORP
International Classes:
B22D13/02; C22C37/00; (IPC1-7): C22C37/00; B22D13/02
Attorney, Agent or Firm:
Tomoyuki Yathata (1 outside)