Abstract

Chemical machining (CHM) is the material removal process for the production of desired shapes through selective or overall of material by controlled chemical attack with acids or alkalis. This is one of the oldest nontraditional machining processes and also has some drawbacks .The main issues face by chemical machining process is the reduced material removal rate when compared to other nontraditional machining techniques. Accuracy of machine should also paid attention. Apart of this, since we are using chemical etchant for the process, it also has some environmental issues. The machining quality of chemical machining is comparatively less. So it is necessary to think of an idea to improve the quality. So in this paper we discussed below about working principle, need, procedure, application of chemical machining process.