Recent content by Haroon1

What, no one??

To improve my knowledge.. These are not homework questions :) 1. How does 'Trepanning' work and where is it used in the manufacturing industry? 2. What is the need for a 'Lip Relief Angle' in drills? 3. If 15-20 deg helix angle drills are called 'low helix angle' and 35-40 deg are called...

I have the answer: This was used prior to the introduction of the alfin ring (cast iron ring) which is now used in certain heavy vehicle diesel engines.

No its not a piston ring. This is basically a very thin ring shaped strip of metal inserted into the inner top portion of the first groove of the piston during its manufacture. (The compression ring is assembled below it). I can't seem to find any related pictures or links of it. here's a rough...

Please explain why sometimes a shim is also installed in the groove of a piston ring, in a piston.

Thanks a Million!

Hi :smile: All the below Questions are related to the GI Foundry. Please clear my doubts. 1. What does the "GI" stand for in a "GI foundry" which is otherwise known as Ferrous Foundry? 2. What is the 'Sintering Cycle" of an induction furnace? 3. What is the difference between swarf...

Thanks for the replies :)

I was reading about this effect called the 'Casimir Effect' which provides evidence for the existence of Quantum Vacuum. What is Quantum Vacuum, and how is it different from the ordinary Vacuum?

Thanks my friends. that was some very useful advice from all of you. dr, sounds like youve been through a very competitive environment! Regards. :smile:

Greetings, I'm a fresh graduate with a bachelors in mechanical engineering and iv been placed in a company that produces pistons and piston rings. I've never had work experience prior to this. If there's anyone out there who's had experience in the manufacturing line or foundry work, please...