CR4 - The Engineer's Place for News and Discussion®

Previous in Forum: Desiccant of IA Dryer   Next in Forum: Weight of hourglass
Close

Comments Format:






Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







12 comments
Anonymous Poster #1

Instant Cooling of Very Small Material

04/26/2012 12:09 AM

I am cutting very small diamond stones through laser beam of energy 1 to 3 mJ.

I want to cool the object instantly.

What is best method can be use? TEC, Vortex tube or a particular material having property to cool up to 4 Deg C.

Reply
User-tagged by 1 user
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Ketchikan, AK, USA
Posts: 15706
Good Answers: 614
#1

Re: instant Cooling of very small material

04/26/2012 1:37 AM

Submerge in ice water.

That's a first option; there may be other possibilities.

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
Reply
Guru
Hobbies - Automotive Performance - New Member Popular Science - Weaponology - New Member

Join Date: Oct 2008
Location: Want to be: 34° 34' 21.60" N, 92° 55' 42.28" W Really am in Arizona
Posts: 29697
Good Answers: 1116
#2

Re: Instant Cooling of Very Small Material

04/26/2012 9:26 AM
__________________
Luck comes and goes. Skill is forever. The supply of fools will always outstrip the demand .
Reply
Guru
New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: Auckland, New Zealand
Posts: 6428
Good Answers: 255
#3

Re: Instant Cooling of Very Small Material

04/26/2012 3:19 PM

CO2 fire extinguisher.

Just remember to ensure the diamond is securely fastened down least it fly off.

__________________
jack of all trades
Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Petroleum Engineering - New Member Hobbies - Target Shooting - New Member

Join Date: Jan 2008
Location: Spring, Texas
Posts: 3410
Good Answers: 148
#4

Re: Instant Cooling of Very Small Material

04/26/2012 3:36 PM

spray liquid Nitrogen (or Liquid CO2 would probably work too.) on it. that is about as instantaneous as you are ever likely to get.

__________________
Who is John Galt?
Reply Score 1 for Good Answer
Guru
Hobbies - Fishing - New Member

Join Date: Jun 2008
Location: Raleigh, NC USA
Posts: 13354
Good Answers: 462
#5

Re: Instant Cooling of Very Small Material

04/26/2012 4:38 PM
__________________
Proud proponent of "Flea Market" Capitalism!
Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Petroleum Engineering - New Member Hobbies - Target Shooting - New Member

Join Date: Jan 2008
Location: Spring, Texas
Posts: 3410
Good Answers: 148
#6

Re: Instant Cooling of Very Small Material

04/26/2012 4:42 PM

So you aren't worried that Thermal Shock won't cause them to shatter?

__________________
Who is John Galt?
Reply
Guru

Join Date: May 2006
Location: Placerville, CA (38° 45N, 120° 47'W)
Posts: 3101
Good Answers: 114
#7

Re: Instant Cooling of Very Small Material

04/27/2012 12:42 AM

There is no such thing as instant cooling! All cooling processes take time! As someone has already suggested, spraying with liquid N2 is about as close as you are going to get to instantaneous.

As someone else suggested, if you cool it too rapidly, it may shatter...

__________________
Teaching is a great experience, but there is no better teacher than experience.
Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Petroleum Engineering - New Member Hobbies - Target Shooting - New Member

Join Date: Jan 2008
Location: Spring, Texas
Posts: 3410
Good Answers: 148
#9
In reply to #7

Re: Instant Cooling of Very Small Material

04/27/2012 2:08 PM

dkwarner, one bit in the OP's favor is that diamond is about as close to a thermal superconductor as there is.

__________________
Who is John Galt?
Reply
Guru

Join Date: May 2006
Location: Placerville, CA (38° 45N, 120° 47'W)
Posts: 3101
Good Answers: 114
#10
In reply to #9

Re: Instant Cooling of Very Small Material

04/27/2012 11:49 PM

Right you are! I only learned that little tidbit a year or two ago, and found it quite difficult to believe at first, since most materials that are good insulators of electricity, which is to say poor conductors of electricity, are also poor conductors of heat. I did just get out the Ohmmeter to verify that a diamond is indeed a poor conductor of electricity, at least the two or three I tried...

__________________
Teaching is a great experience, but there is no better teacher than experience.
Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Petroleum Engineering - New Member Hobbies - Target Shooting - New Member

Join Date: Jan 2008
Location: Spring, Texas
Posts: 3410
Good Answers: 148
#11
In reply to #10

Re: Instant Cooling of Very Small Material

04/28/2012 9:06 AM

IC manufacturers are trying to figure out how to grow the silicon and/or Gallium Arsenide on a sputtered diamond substrate as a heat spreader plate.

__________________
Who is John Galt?
Reply
Guru
Engineering Fields - Mechanical Engineering - Ever Changing United States - Member - From the Redwoods to the Valleys Engineering Fields - Control Engineering - Building blocks or writing code - to keep you comfortable

Join Date: Apr 2008
Location: 38th Parallel
Posts: 682
Good Answers: 16
#8

Re: Instant Cooling of Very Small Material

04/27/2012 2:04 PM

How Many?

How fast?

How often will you need the cooling solution?

If it is set up as an assembly type of process, Tornado's suggestion is good, ice bath or glycol fluid bath with a conveyor at the bottom to pull the diamonds back to the surface into a storage vessel.

Or make a nitrogen injection tunnel like we did for mini quiche. Came out of the oven at 475 degrees 30 feet later into packaging at -15 degrees.

Good Luck

__________________
"It has been my experience that folks who have no vices have very few virtues." - Abraham Lincoln
Reply
Power-User
Popular Science - Weaponology - New Member Hobbies - Fishing - New Member

Join Date: May 2007
Location: Aloha or
Posts: 483
Good Answers: 14
#12

Re: Instant Cooling of Very Small Material

05/03/2012 3:32 PM

experiment before you buy. I have had diamonds shatter from rapid cooling after doing jewelry work.

__________________
Closed biased minds are utterly impervious to any factual evidence which contradicts their beliefs
Reply
Reply to Forum Thread 12 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

dkwarner (2); jack of all trades (1); kramarat (1); lyn (1); Rorschach (4); silvCrow (1); Stedou73ish (1); Tornado (1)

Previous in Forum: Desiccant of IA Dryer   Next in Forum: Weight of hourglass

Advertisement