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Patent Searching and Data


Title:
CEMENTED CARBIDE COMPOSITE ROLL
Document Type and Number:
WIPO Patent Application WO/2019/151379
Kind Code:
A1
Abstract:
This cemented carbide composite roll is characterized by being formed from a steel inner layer, an intermediate layer made from a cemented carbide containing WC particles, and an outer layer, wherein the cemented carbide configuring the outer layer contains 55-90 parts by mass of WC particles and 10-45 parts by mass of a binder phase that has a specific composition with Fe as the main component, the cemented carbide configuring the intermediate layer contains 30-65 parts by mass of WC particles and 35-70 parts by mass of a binder phase that has a specific composition with Fe as the main component, and, when defining c1 as the content of WC particles in parts by mass in the outer layer and c2 as the content of WC particles in parts by mass in the intermediate layer, it holds that 0.45 ≤ c2/c1 ≤ 0.85.

Inventors:
OHATA TAKUMI (JP)
Application Number:
JP2019/003326
Publication Date:
August 08, 2019
Filing Date:
January 31, 2019
Export Citation:
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Assignee:
HITACHI METALS LTD (JP)
International Classes:
B21B27/00; C22C29/08
Foreign References:
JP2004167503A2004-06-17
JPS5144502A1976-04-16
JP2003342668A2003-12-03
JPS6083708A1985-05-13
JP2002301506A2002-10-15
JPH05171339A1993-07-09
JP2000219931A2000-08-08
Other References:
"Plastic Working Technology Series", vol. 7, CORONA PUBLISHING CO., LTD., article "Strip Rolling, 10.3 Hertzian Pressure and Fatigue", pages: 257
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
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