1.

State whether the following statement is true or false regarding ES drilling.(a) “In ES drilling, hydrochloric acid is used for machining aluminium and its alloys.”(b) True(c) FalseThe question was asked during an online interview.My doubt stems from Electrostream (Capillary) Drilling topic in section Electrochemical Processes of Advanced Machining

Answer»

The correct choice is (a) “In ES drilling, HYDROCHLORIC acid is used for machining aluminium and its ALLOYS.”

BEST EXPLANATION: Hydrochloric acids are used for machining Al and its alloys and sulphuric acid is recommended for other metals.



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