Plasma and Oxyfuel

Hi.
I have a project for a big cnc 20' by 40' plasma retrofit, it uses Hyperterm 260 and oxyfuel, i want to use QTPlasmaC, dos anybody have similar experience, of course there is not problem at all with plasma, but not idea where to start with oxyfuel, i know we can have multiple "spindles" but how about HTC, etc.

thanks for you help.

There is any way, we can have manual control of the z axis while moving?

Like Tommy said, oxyfuel cutting can be a very simple 3 valves and manual up/down. But there are many different ways to cut with oxy or many ways how to build the oxy cutting machine.

With HTC I assume you mean a capacitive height sensor? My suggestion for the most "bang for the buck" is to go example with HYD HCH-400, its simple to use and does its job quite well, not too expensive either. The height sensors job is not only to track the plate but its to move away from the piercing slag and then automatically come down to proper cut height.

I would say the next step from the simple and cheap 3 valve system is a 6 valve one, you add:
- an additional high preheat valve for faster heating (requires a regulator).
- a low pressure pierce valve to make a simple pressure ramp (requires a regulator).
- a venting valve to vent out the gas at the end of the cut to avoid burning the top of the material at the end of the cut. This should not extinguish the flame, just vents out the cutting oxygen.

Next on the line is adding an automatic igniter (ignite only in the beginning of the cutting program not at each pierce), pretty simple stuff.

Then you might want to add additional stages to the piercing oxy pressure if you need to pierce really thick stuff. Ideally this would be done with proportional valves, the old way of doing multistage piercing was with solenoid carousels.

Then last and best (if you want good, reliable piercing of over 4"/100mm material) is to have proportional valves, internal ignition and height control.

At the end it really depends if you cut once in a while and keep cutting lets say under 1"/25mm, or you push daily production of really thick materials. It also depens if you really need to pierce or is edge start a possibility on thicker materials. The thicker you go, the more difficult it is to pierce without clogging the nozzle. I would also add moving pierce when going over 2"/50mm.

The machine can also be any mix of the above, it all depends on the use case.