Problem 14 2 pts Which one of the following is not true with

Problem 14 (2 pts Which one of the following is not true with regard to applying a cutting fluid during machining? a) Cutting fluid serves as a coolant which lowers the temperature of the cutting tool and prolongs cutting tool life b) Lubricants within the cutting fluid penetrate the tool-workpiece interfaces and reduce friction. c) Cutting fluid flooded into the cut zone washes away chips from the cut zone and prevents them from interfering with the machining process d) Oxidization chemicals within the cutting fluid chemically react with the newly created workpiece surface to create a thick, protective oxide coating e) None of the above Problem 15 2 pts Which one of the following machining processes can be used to create a UN 5/8-16 internal thread? a) A tapping process utilizing a 5/8-16 tap in combination with a feed rate of 16 in./rev b) A single point threading process using a 600 threading insert and a feed rate of 16 in/rev c) A thread milling process using a 5/8-16 threading insert traversing along a helicoidal path with a helix angle of 1.823 d) A tapping process utilizing a 5/8-16 tap in combination with a feed rate of .0625 in./rev e) All of the above

Solution

Answers

14. D (False).

Options A,B,C are functions of cutting fluid during machining. Because cutting fluid acts as Coolant, Lubricant and removes the chips.But, Oxidation chemicals with in the cutting fluid cannot react with the newly created workpiece surface for creating thick and protective oxide coating.

15. A (Correct)