I have been running a Bystronic Bystar 3015 for a couple of years now and it has been a great machine, however. Since we have had the machine every now and again the cut quality will just go right out the window. I could be cutting a 4 sheet nest, I can have cut 2 sheets then after transfering the third sheet hit start and the parts will be stuck together like the focal length is wrong or it will plasma the top of the sheet. To rectify this problem I have had to do some major changes of parameters to get back to a quality cut. This could entail changing laser power, gas cutting pressure, focal and feed rate, or sometimes all 4. Then after a day or to it will just go south again still using the same params that were working fine. I would change the params back to what they were originally and it's back to normall for a month or 2. This could also just happen halfway through cutting a sheet as well not neccesarily after starting a new sheet. It has everyone here scratching there head when it happens. Service Tech puts it down to beam alignment but I can't see that being the problem as it can change back to old params.
To give you an idea of the changes I sometimes have to make
Normal params for 3mm SS After issue depending on how bad it is
LASER POWER 3600 Between 3000 - 4200
FEED RATE 4400 Between 3900 - 4800
GAS PRESSURE 12 Always up never down 15bar
FOCAL LENGTH 3.8 Between 2.9 - 6
It's so random
Anyone experienced anything like this before ???.
It's not a major issue if I catch it early and I have enough knowledge to fix this issue when it arises quite fast, but if I can stop it from happening in the first place that is more ideal.
Bystronic Bystar 3015
Year of Manufactor 2005
The machine orginally came from Germany and now is in Perth Western Australia. I'm wondering if that has something to do with it. I remember one Tech who came to service it said it was missing something or had something on it that was unusual until I told him it came from Germany. That will be why he said because of the extreme cold during there winter.
Cheers in advance for any advice.