QUASAR-METHOD OF BLAST EXTRACTION OF CUTTING TOOL FRAGMENT Russian patent published in 1998 - IPC

FIELD: blast extraction of broken tool, having longitudinal or helical splines, for instance, of drills or taps, from workpiece ducts. SUBSTANCE: explosion-proof blasting means is placed on the workpiece, with its case cavity communicating with the workpiece duct. The blasting means lead-out conductors are connected to the line conductors of the electric explosion circuit. Liquid explosive is produced of separately safety components (nitrogen tetrocide and cracked petroleum products). The cutting tool fragment splines and blasting means case cavity are filled with liquid explosive. Blast is accomplished. EFFECT: facilitated procedure. 3 cl, 2 dwg