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THE HISTORY OF CHEMICAL MILLING
THE BASIC PRINCIPLES OF THE PROCESS
THE CHEMICAL MILLING OF
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accuracy achieved adhesion alkaline aluminium alloys Anon application areas British Aircraft Corporation cent chemical milling chemical-milling circuit coating component copper corrosion cost Courtesy degreasing demasking depth of cut difficult eat-back edge effect embrittlement engineer ensure equipment etch factor etch rate etchant etching tank example facility facing-sheets fatigue fluoride fumes geometry heat heat-treatment hydrochloric acid hydrofluoric acid hydrogen hydrogen embrittlement illustrated in Fig immersion industry integrated circuits layer liquid machining magnesium manufacture maskant masking material methods multi-step nickel nitric acid North American Aviation operation over-all oxide particular photo-chemical milling photo-resist plant plastic pocket pollution polypropylene possible pre-cleaning produced range reduced remaining metal thickness removed resist result rinse scribing sheet shown in Fig sodium hydroxide solution solvent specification stage stainless steel step sulphuric acid surface finish taper technique temperature template tion titanium alloys tolerance toxic U.S. Patent undercut waste whilst work-piece