No thermal heat-affected zone (HAZ), making it perfect for heat-sensitive materials.
Non-Conventional Machining (NCM) processes—also known as Advanced Machining Processes (AMP)—remove material using thermal, chemical, electrical, or mechanical energy without direct tool-to-workpiece contact. This article provides an updated overview of NCM processes, perfect for students, engineers, and professionals looking to update their technical presentations and seminar slides. Why Non-Conventional Machining?
Die-Sinking EDM (for molds and dies) and Wire EDM (uses a thin wire to slice complex paths). non conventional machining process ppt updated
These processes rely on chemical reactions or atomic-level electrolytic dissolution to remove material. Electro-Chemical Machining (ECM)
The workpiece and a shaped tool electrode are submerged in a dielectric fluid (like kerosene or deionized water). A high-frequency pulsed DC voltage creates spark discharges across a microscopic gap. This intense spark vaporizes and melts the material. Critical Presentation Points: No thermal heat-affected zone (HAZ), making it perfect
These processes use kinetic energy or mechanical erosion to micro-chip materials away.
Spark erosion. The tool and workpiece never touch; a spark gap of is maintained. Why Non-Conventional Machining
A laser source (Fiber, CO2, or Nd:YAG) generates a highly focused, monochromatic, coherent beam of light. Optical lenses focus this beam onto a tiny spot on the workpiece, causing instant melting and vaporization. Critical Presentation Points:
Uses a ultra-high-pressure stream of water (often mixed with garnet abrasive) to slice through thick metals, composites, and stone without generating heat. 2. Electrochemical Energy Processes