Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
BRAZED CUTTING TOOL EXCELLENT IN BONDING STRENGTH
Document Type and Number:
Japanese Patent JPH11294058
Kind Code:
A
Abstract:

To provide a brazed cutting tool, in particular, an excavating tool which is excellent in bonding strength in which a tip is firmly bonded to a holder.

In a brazed cutting tool 20 in which a tip 10 is brazed to a holder 20 with a Cu brazing filler, a brazed part of the tip 10 and the holder 20 comprises a Cu brazing filler layer 4 of approximately same composition as that of Cu brazing filler used in the brazing, Fe+Co brazing filler layers 3, 3 formed on each side of the Cu brazing filler layer, and a tip Cu diffusion layer 1 and a holder Cu diffusion layer 2 in contact with the Fe+Co brazing filler layers 3, 3. The Cu brazing filler layer 4 is 20-350 μm in thickness, and the Fe+Co brazing filler layers 3, 3 are 2-20 μm in thickness, respectively, the tip Cu diffusion layer 1 is 20-200 μm in thickness, and the holder Cu diffusion layer 2 is 20-200 μm in thickness.


Inventors:
MIHASHI AKIRA
Application Number:
JP1998000095871
Publication Date:
October 26, 1999
Filing Date:
April 08, 1998
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
E21B10/46; B23B27/14; B23B27/18; B23K1/00; B23K1/19; B23K33/00; B23K35/30; (IPC1-7): E21B10/46; B23B27/14; B23B27/18; B23K1/00; B23K1/19; B23K33/00; B23K35/30
Attorney, Agent or Firm:
富田 和夫 (外1名)