ELEMENTI FRESANTI DIAMANTATI POLICRISTALLINI CON TENSIONI RESIDUEMODIFICATE

• Main Authors: BUTCHER TRENT H, SCOTT DANNY E, HORTON RALPH M, SMITH REDD H, JUREWICZ STEPHEN R
• Format: Patent
• Language: Italian
• Published: 03.11.2003
• Edition: 4
• Subjects: CASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; 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; TRANSPORTING; WORKING METALLIC POWDER

The residual stresses that are experienced in polycrystalline diamond cutters, which lead to cutter failure, can be effectively modified by selectively thinning the carbide substrate subsequent to high temperature, high pressure (sinter) processing, by selectively varying the material constituents o...