I’m using the cut conditions from hypertherm but I’m getting really poor cuts with extreme slag build up. The arc is wandering a bit too.
I increased the pierce delay by 200% and slowed rapid to 40% and got better but still bad results. I’ve noticed it has NO pierce delay even though it shows a .5 delay on both fusion and the g code. The only thing Is that I read to set the spring back to zero in the posting menus. and I’m also going to set the pierce delay to a full second to see if that helps.
Any other recommendations for cutting the thicker stuff? Anything 1/4 and under cuts like a dream.
Slowing your rapids wont effect cut quality.
Have you ever cut this file before on thinner material and it worked? or is this a brand new file?
You covered all the basics, Air pressure is correct? Work clamp on material?
You need to find out why you have no pierce delay, your material thickness will not change delay.
Maybe try a file you have cut before and change your cut setting in that and see it it works.
Post your file here so we can see it
.5 is to short for Stainless steel also. What is the condition of your consumables? Unless you are using F5 gas to cut you will almost always have dross and sugaring on the edges. The nickel and chromium form a hard slag.
Don’t rely on adjusting IPM and pierce delay in firecontrol when you change thickness. You need to be post processing with the correct or close to correct settings to begin with. When you find what adjustment percentage worked, do some math and adjust your post processing.
The adjustments default back when you reload programs so you will be continually changing them.
.5 is no where near enough for 3/8, so you are not using what hypertherm recommends. If your g code shows .5 you have post processed your file incorrectly. (Correction, I forgot the hypertherm charts are super low for pierce delay). With our tables you have to add quite a bit to the recommended delay.
By what measurement are you determining that there is “NO pierce delay?”
This is my understanding: This pierce delay is for the machines talking to one another. FireControl sends the signal to turn the torch on and waits the “Pierce Delay” amount before it sends the next signal for the torch to move from Pierce height to cut height and start cutting.
Ideally, you want your pierce delay to be as short as possible and still have the torch lit by the time it starts to move from pierce height to cut height. If it is too short, there won’t be enough time for the torch to fire before it gets the signal to move. FireControl will start the torch to move from pierce height to cut height and realize that the torch had not started to burn and would stop the action and give an alert (if using THC).