Effects of thermal and mechanical loading on PDC bit life

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6682612

Glowka, D A; Stone, C M

The results of numerical analyses conducted to determine the effects of thermal and mechanical loading on the integrity of polycrystalline diamond compact (PDC) cutters during deep hole drilling are presented. Cutter temperature distributions for several drilling environments are combined with appropriate mechanical cutting loads to predict stress distributions for the study of cutter wear mechanisms. A discussion of wear mechanisms acting on the cutting structure is presented. Suggestions are presented, based on these analyses, for the operation of PDC bits to increase bit life in hard, abrasive rock drilling. Microstructural design considerations for the cemented carbide that supports the diamond layer are also discussed.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6682612
• Report Number(s): SAND-84-0316C; CONF-8409104-4; ON: DE84014987
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CARBON
CRYSTALS
DIAMONDS
DRILL BITS
DRILLING EQUIPMENT
ELEMENTAL MINERALS
ELEMENTS
EQUIPMENT
MINERALS
NONMETALS
POLYCRYSTALS
SERVICE LIFE
STRESS ANALYSIS
TEMPERATURE DISTRIBUTION
TEMPERATURE EFFECTS
WEAR