Title:
PRODUCTION OF COMPLEX ROLL OF CEMENTED CARBIDE AND CAST IRON
Document Type and Number:
Japanese Patent JP3305541
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent the crack and the oxidation of cemented carbide rings in cast solidifying and cooling steps, in a production of a complex roll composed of the cemented carbide material and a cast iron.
SOLUTION: The cemented carbide rings 2 are arranged so as to be apart from the inner peripheral surface of a mold 1 with fixed jigs 4 and molten iron having a temp. at higher than the melting temp. of the surface of the cemented carbide ring 2, is poured into the mold 1, and the whole peripheral surfaces of the cemented carbide rings 2 are inserted as cast-in with the molten iron is solidified. Further, heat treatment, in which a part of the cast iron 3 is transformed into a pearlite structure in the as-cast product after casting and thereafter, the remained part is transformed into bainite structure, is executed and machining is executed to expose the outer peripheral surfaces of the cemented carbide rings 2.
Inventors:
Hiroyuki Kimura
Hiroaki Katayama
Yoshito Seto
Yutaka Nakai
Hiroaki Katayama
Yoshito Seto
Yutaka Nakai
Application Number:
JP19277895A
Publication Date:
July 22, 2002
Filing Date:
July 28, 1995
Export Citation:
Assignee:
Kubota Corporation
International Classes:
B22D19/00; B21B27/00; B21B27/02; B22D19/16; B22D29/00; C21D9/38; (IPC1-7): B22D19/16; B21B27/00; B21B27/02; B22D29/00; C21D9/38
Domestic Patent References:
| JP4319059A | ||||
| JP61199567A | ||||
| JP4344808A | ||||
| JP5924564A | ||||
| JP58138551A | ||||
| JP4714019A |
Attorney, Agent or Firm:
Toshiyuki Maruyama (1 outside)