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2 2007

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Chemical machining

Çakir O., Yardimeden A., Özben T.

Archives of Materials Science and Engineering

2007

Vol. 28, nr 8

499-502

Purpose: Nontraditional machining processes are widely used to manufacture geometrically complex and precision parts for aerospace, electronics and automotive industries. There are different geometrically designed parts, such as deep internal cavities, miniaturized microelectronics and fine quality components may only be produced by nontraditional machining processes. This paper is aiming to give details of chemical machining process, industrial applications, applied chemical etchants and machined materials. Advantages and disadvantages of the chemical machining are mentioned. Design/methodology/approach: In this study, chemical machining process was described its importance as nontraditional machining process. The steps of process were discussed in detail. The tolerances of machined parts were examined. Findings: Paper describes the chemical machining process, industrial applications, applied chemical etchants and machined materials. Practical implications: The machining operation should be carried out carefully to produce a desired geometry. Environmental laws have important effects when chemical machining is used. Originality/value: The importance of nontraditional machining processes is very high.

Photochemical machining of engineering materials

Cakir O.

Archives of Materials Science

2007

Vol. 28, nr 1-4

15-19

Photochemical machining (PCM) is one of the important nontraditional machining processes in which photographic and chemical etching techniques are employed. The workpiece material is shaped by using a strong chemical solution to dissolve surface of the workpiece that was selectively exposed to machine areas using a photographic technique. The application of photochemical machining has increased extensively in the electronics, precision engineering, medical and decorative industries as well as in the microcomponentproduction industry. The present study is aimed to provide information on the application of PCM. The selection of etching parameters such as etchants for engineering materials, chemical additives into main etchants and etching temperature on the different machining outputs will be discussed. Also, the influences of environmental legislations on the machining process are examined and the future directions are considered.