Originally Posted by tinman13  I use propane for fuel gas, it takes longer for your preheat time but in my case the cost savings is worth it.
Make sure you are preheating long enough..........
For 2" plate I have good luck with a # 4 tip (Koiki of course)
210 sec. preheat time,
1.5 sec. pierce delay,
1 1/2" pierce height,
55 to 60 psi cutting oxy pressure.
But I still cringe every time it fires!
I would love the soft start valve, I think once you get it figured out you'll be glad you took the time to do it.
Good Luck, Steve |
Also look at creep time. this is the time the machine will move at 25% of cut speed and should be used on thicker plate instead of prerce time and it creates a trough for the slag to go out of. It takes a longer lead in but it saves in tips.
If you have ease-on then I would time the amount of time it takes to come from 0 to about half cut pressure set this a pierce time and creep time until it pierces through. Lead in's will have to be longer, maybe.
Koike does know how to cut steel. Most of the field techs don't have the experiance. However all new techs, start cutting steel for two weeks in the fab shop before they can start training.