Using nitrogen as coolant? 2

[Herrmann]

I recently read an article where a company is using nitrogen extracted from the atmoshere as a coolant. I have tried without any luck in getting any information from that company. Can somebody help me find more information on how to apply this technology to CNC turning centers? Thanks.

 

[rakes]

Are you referring to Liquid Nitrogen(cryogenic cooling)?

 

[blmcghee]

TRY THIS SITE

http://www.nitrogenie.com/

 

[ArthurAllan]

I am also looking into this coolant technology for drilling >.750 and <.1.25 diameter holes in 6AL4V titamium 2.5 to 4.0 inches deep horizontaly. I am looking into nitrogen generators but havent been able to find anyone using this technology in the U.S.A.. Any information would be helpful or else I guess i will have to pioneer this technology.

 

[MortenA]

I have hear that sometimes liquified air is used in the food industry for fast cooling of certain types of food (i think i heard about schimps). Is this the type of application you are thinking of?

Best Regards

Morten

 

[Luslugger]

Truck loads of liquid nitrogen are delivered everyday. All of the big welding gas suppliers can sell you nitrogen. I have not heard of anyone using it for machining. I did some experiments with aluminum where we tried to get it cold enough to be brittle and fracture on impact. We could not change the properties enough to use it. If you used nitrogen I would expect the material and the chip to be more brittle. The thermal differential would be much greater which means thermal shock of the cutting edge would be greater. Maybe all you are looking for is the inert gas properties. It is the cheapest way to do that.

 

[Viktor]

Dear Friends

In this discussion we came across two questions. First, if a liquid nitrogen is suitable for using as a coolant in machining and second, where to get it. To answer the first question, I have to clarify some physical properties of liquid nitrogen.

Liquid nitrogen has zero lubricity and low heat capacity. The later means that the amount of heat carried from any hot surface is relatively low (say, much lower than water does). Moreover, being applied on hot surfaces, it forms a vapor shield that further decreases its cooling effect. Therefore, a special technique should be used if one tries to use liquid nitrogen as a coolant. This implies s special tool designs and delivery of the liquid nitrogen into machining zone under pressure. For example in twist drilling, only drills having internal channels for coolant supply should be used. I have a number of such designs and complete technology in my possession.

It is efficient. Yes, for certain application (high titanium alloys and aluminum) it allows increase productivity and quality up to 5 folds. It all depends whet are you looking for.

Where to get it? This is the simplest problem – you can order it in any amount (from one vacuum flask to a track load). Moreover, you can buy a small machine (5-10 gallons per 4 hour) to produce it in house.

Regards
Viktor

http://viktorastakhov.tripod.com

 

We have a technology for using LIN as a coolant.

 

[ccaserta]

I just performed a certification for a company whos expertise is in coolants. They have done a ton of research in coolants for CNC's. I have a contact name if you want to call me. Christopher Caserta
ccaserta@enorthhampton.com
Ph:904-225-0360