Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...
Chemical Machiningmnmnmnmnmnmnmnmnn.pptx
1. Chemical Machining
• Chemicals are used to dissolve material
• Masks are used to control attack
• Most common use is circuit boards and plates for printing.
• Cutting speed of 0.0025-0.1 mm/minute – very slow
3. Photo-Chemical Machining
• PCM is a material removal process using chemicals
(etchants) to produce high precision parts.
• This process is also known as Photo Etching, Chemical
Blanking and Photo Chemical Milling.
• Coat both sides of the plate with photoresist. (photoresist is
a polymer that adheres to the metal when exposed to UV
light).
• Spray metal with etchant or dip it in hot acidic solution to
etch all material other than part covered with photoresist
(1-15 min.).
• Rinse the plate to ensure photoresist and etchant
removal.