Title:
WORK ROLL FOR COLD ROLLING
Document Type and Number:
Japanese Patent JP3447361
Kind Code:
B2
Abstract:
PURPOSE: To produce a work roll capable of cold rolling while low wear resistance is secured by forming the structure of the surface layer of a roll of an amorphous alloy essentially consisting of iron transition metal elements and carbon and dispersedly precipitating carbon with graphite as a main existing form.
CONSTITUTION: The surface layer 2 of the main body 1 of a forged steel work roll for cold rolling is formed of a matrix constituted of an amorphous allay essentially consisting of iron, transition metal elements and carbon and in which carbon is dispersedly precipitated with graphite as a main existing form. As for carbon, the maximum concn. is preferably regulated to about 45 to 80 atomic %, and as for graphite precipitates, the ratio of ones having about ≤20nm particle size is preferably regulated to about ≥90%. Thus, rolling under high pressure in which seizing is generated in the case of the conventional roll or the use of a rolling lubricating oil with low viscosity are made possible, and a sheet having high gloss can be produced. Moreover, adhesion between the roll and rolled sheet is small, so that the generation of worn particles can be suppressed.
Inventors:
Jun Sasaki
Kazunori Hayashi
Toshiyuki Shiraishi
Kazunori Hayashi
Toshiyuki Shiraishi
Application Number:
JP4930294A
Publication Date:
September 16, 2003
Filing Date:
March 18, 1994
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21B27/00; B21B27/02; B23K15/00; C23C14/06; C23C14/48; (IPC1-7): C23C14/06; B21B27/00; B21B27/02; B23K15/00; C23C14/48
Domestic Patent References:
| JP533130A | ||||
| JP3229854A | ||||
| JP61273206A | ||||
| JP6272406A | ||||
| JP5253780A | ||||
| JP32229B2 |
Attorney, Agent or Firm:
Tomoyuki Yathata (1 outside)
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