laser cutting 11ga stainless with pvc coating
laser cutting 11ga stainless with pvc coating
(OP)
We have a job that requires us to cut stainless steel with pvc coating on one side. the application requires that we leave the pvc coating on the material. we have attempted to score the pvc with low wattage and a raised focal point and then cut the stainless. The coating blows off when we attempt to pierce and cut the material. We have tried nitrogen as the assist gas at a range of pressures (125psi-200psi) and the film still blows off. We also tried oxygen cutting the material at 20 psi and the film still blows off. Does anyone have experience with a similar application that could offer some guidance?





RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
Sorry, I don't have the paper at hand.
It might be available?
regards
Jay
Jay Maechtlen
RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
To cut fast with Oxy, more power could be helpful.
If you need paintable edges (Nitrogen cut) you want a bunch of power.
Size of parts and desired sheet size is also pretty important! Will everything fit into a 1 meter square area, or do you want to cut bigger stuff?
Also- you may want to pick up a good used machine, rather than a cheap new machine.
(used Chevrolet or Mercedes, versus new Kia or Hyundai)
- YMMV- there are always factors on either side of the fence- depends on what you are trying to sell...
cheers
Jay
Jay Maechtlen
RE: laser cutting 11ga stainless with pvc coating
Laser cutting PE coated sheet is very common, and so is this problem.
There is , unfortunitly, not much you can do, if the P.E has a low grip adhevsive. The gas pressure will get under it and blow it up. You can try to do a pre burn at the pierce point. This can seal the film around the pierce and stop the pressure getting under, but if the film lifts while the head is in motion, it's game over.
All good St/St suppliers should stock laser film, which if it is applied properly will cut with no problems. Even with this material, though, I normally still do pre-burns at the pierce points.
Good Luck.
RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
RE: laser cutting 11ga stainless with pvc coating
(1) Stand with your face glued to the machine and your finger on the stop button waiting for the plastic to blow.
(2) Remove the plastic and let the machine stand alone whilst you do something more useful.
The machine is never in contact with the material, so why bother leaving the plastic on.
It may sound straight forward, but only because i have tried everything to overcome the problem myself. (there is no guarentee)
The most productive is to remove the plastic.
Archy
RE: laser cutting 11ga stainless with pvc coating