Podcast Beta
Questions and Answers
What is the main purpose of etching on steel surfaces?
To reveal hidden digits or marks
What is the composition of Fry's reagent, also known as Solution 1?
90gms of crystalline cupric chloride, 120ml of concentrated hydrochloric acid, and 100ml of water.
What should be used to clean the surface after applying Solution 1?
Acetone
How often should the appearance of the mark be checked during the etching process?
Signup and view all the answers
What is the purpose of Alternate Solution 1?
Signup and view all the answers
How long may the etching process take to complete?
Signup and view all the answers
What is the primary purpose of using acetone to clean the surface after applying Solution 1?
Signup and view all the answers
Why is it important to alternate between Solution 1 and Solution 2 during the etching process?
Signup and view all the answers
What is the primary function of the 15% nitric acid solution in the etching process?
Signup and view all the answers
How long should the surface be swabbed with Solution 1 during the initial application?
Signup and view all the answers
What is the purpose of drying the surface with cotton wool after applying the acid copper chloride solution?
Signup and view all the answers
Why is it necessary to apply Solution 1 and Solution 2 alternately during the etching process?
Signup and view all the answers
