Ok, thanks for the replies guys, the webpage that confused me is this one...
https://gsp.humboldt.edu/olm/Courses/GSP_216/lessons/thermal/emissivity.html
However I am happy to say that I have used the advice on this thread to get the correct answer on their sample equation so I am sorted. I...
Hi Guys,
I am a machinist and not very good with equations. What I have is an old school pyrometer that has no on board emissivity compensation. I have found the equation to make the compensation but I can not get my head around the fraction in the calculation.
T rad = ε 1/4 T kin
So lets say...
I am surprised that this info is turning out to be so hard to find. I have looked through the ASM Metals handbook, Vol one has a whole chapter devoted to "Notch Toughness of Steels" and it doesn't have this info.
I wonder if this information is something that Engineers assume to be too basic to...
Hi,
I am looking for a graph or chart of information regarding temper toughness of plain carbon steels. I have found a graph showing the type of information I am seeking, but this one is for 4140 -
http://home.comcast.net/~jcheck10/500FE-4140.jpg
The graph has Izod or Charpy on one axis, and...
I have done some heat treatment at my workplace, but not enough to have any expertise, but recently I was queried on the theory and let’s just say the “Socratic method” revealed a few (big) gaps in my knowledge, I would appreciate some help to understand the theory behind the processes.
My...
