Cutting mild steel with N2

[thermeng2]

Hi,

I have been asked to cut mild steel with nitrogen. I have never done this but have heard of it being done to get rid of the scale that is left on the cut edge from oxygen. I am using a 1500 watt mazak. If any one has cut conditions for doing this or pointers on were to start from that would be great.

Thanks

 

[Greg7152]

bottom of the material focus point, high pressure N2 6-8kg(depending on machine capabilities)Limited to about .125 inch material. full power, freq, duty. feed rate start @ half of mild steel fedd rate and go up as far as you can have a decent cut

 

[accutron42s]

If you happen to get that nasty dross or slag on the bottom of the cut, tap it with a hammer. It is so hard & brittle it comes right off. I discoverd this by accident when cutting mild steel with high pressure nitrogen. I threw a part into the scrap barrel & missed. When I picked the part off up the floor the slag was gone!

 

[ScottI2R]

A division of our company used to clean cut stainless steel with N2 @ 300psi. I cannot recal how thick or feedrate. Hope this helps some...


Scott

In a hundred years, it isn't going to matter anyway.