Before introducing advanced topics, an updated PPT must clearly define the "Big Six" traditional non-conventional methods. However, modern slides should use infographics (e.g., a classification tree) rather than dense text.
Non-conventional machining (NCM) processes, also known as non-traditional or advanced machining, remove material using mechanical, thermal, electrical, or chemical energy without the direct physical contact of a sharp wedge-shaped tool typical in conventional methods
. These processes have become essential in 2025–2026 for handling extremely hard, brittle, or complex materials used in aerospace, medical, and nuclear industries. Classification of NCM Processes
NCM methods are primarily classified by the type of energy used for material removal: Energy Category Common Processes Mechanism of Material Removal Mechanical AJM, USM, WJM, AWJM Erosion or abrasion using high-velocity particles/fluids. EDM, LBM, EBM, PAM Melting and vaporization through high-intensity heat. Electrochemical Controlled anodic dissolution at the atomic level. Chemical etching using a suitable etchant. Key Non-Conventional Processes 02 - Non Traditional Machining Processes.ppt - Course Hero