Chemicel

Question 1

explain the process of chemical milling

Answer 1

• apply a protective mask (spraying, dipping, or screen printing)
• exposed to a chemical etchant
• etchant reacts with the exposed metal, forming complexes that are easily washed away
• thoroughly rinsed to stop the chemical reaction

Question 2

when is chemical milling usually used

Answer 2

• safe machining:
  when material integrity is crucial (no formation of cracks)
  producing thin-walled parts
• high precision
• cost-effective for certain materials

Question 3

design considerations for chemical machining

Answer 3

• no sharp corners
• no deep or narrow cavities
• no porous materials
  + machining complex shapes
  + good surface finish
  + no stresses on parts during the process
  + low costs