The progress of biomachining

摘要

Biomachining method is a new micromachining technology besides physical, chemical and physicochemical machining methods, and is a new interdisciplinary field between bioengineering and micromachining fields. Some micro-workpieces made up of pure copper or pure iron were bio-machined by making use of metabolism of colony bacteria. The ion-cycles theory, kinetics and thermodynamics for this biological removal forming (BRF) process were proposed.