QUENCH HARDENED ROLL OF FORGED STEEL CONTAINING COBALT
United States Patent 3530703

Inventors:
Shimegi, Tadashi
Hirose, Haruhiko
Ozawa, Hiroshi
Publication Date:
09/29/1970
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Assignee:
KANTO SPECIAL STEEL WORKS LTD
Primary Class:
72/199
Other Classes:
420/104, 420/107, 492/3
International Classes:
B21B27/00; C21D9/38; C22C38/18; B21B1/00; C21D9/38
US Patent References:
3306735Hardenable forged-steel roll material




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