Cemented carbide body with increased wear resistance

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...

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Bibliographic Details
Main Authors FISCHER; UDO K, HARTZELL; E. TORBJORN, AKERMAN; JAN
Format Patent
LanguageEnglish
Published 09.05.1995
Edition6
Subjects
CASTING
DREDGING
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PERFORMING OPERATIONS
POWDER METALLURGY
SOIL SHIFTING
TRANSPORTING
WORKING CEMENT, CLAY, OR STONE
WORKING METALLIC POWDER
WORKING STONE OR STONE-LIKE MATERIALS
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Summary: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.
Bibliography:Application Number: US19920976381