Cemented carbide body with increased wear resistance

Details Cemented carbide body with increased wear resistance Cemented carbide body with increased wear resistance

1992-11-13

1995-05-09

Turner, A. A.

Stock material or miscellaneous articles

Composite

Of metal

51307, 51309, 428472, 428698, 428699, B32B 1504

Patent

active

054138698

ABSTRACT:
A cemented carbide button for rock drilling comprises a core and a surface zone surrounding the core whereby both the surface zone and the core contains WC (alpha-phase) and a binder phase based on at least one of Co, Ni, or Fe and the core in addition contains eta-phase. The eta-phase core extends to the very top (working) surface of the button and as a result is obtained longer life and higher drilling rate particularly for rotating crushing drilling, cutting drilling and percussive drilling in soft rocks.

REFERENCES:
patent: 2842342 (1958-07-01), Haglund
patent: 4705124 (1987-11-01), Abrahamson et al.
patent: 4743515 (1988-05-01), Fischer et al.
patent: 4820482 (1989-04-01), Fischer et al.
patent: 4854405 (1989-08-01), Stroud
patent: 4997049 (1991-03-01), Tank et al.
patent: 5007207 (1991-04-01), Phaal
patent: 5154245 (1992-10-01), Waldenstrom et al.

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