CHEMICAL MACHINING PROCESS - A REVIEW

Chemical Machining (CHM) is a non-conventional machining process, which is used to machine hard brittle materials. The objective of this paper is a literature survey related to the chemical machining process. In this machining process, the chemical energy of the etchant is used to remove the excess materials from the workpiece; materials will be removed through the chemical dissolution process. In the literature, it is identified that so many factors influence the process of chemical machining such as concentrate of etchant, the temperature of the etchant, masking methods, types of the masking and etchants. It is also identified that these process parameters influence the material removal rate (MRR) and surface finish.