jimcolt
Gold Member
Mark, FYI
If you are cutting 3/8" plate at a 42 degree bevel with a Hypertherm Powermax1250 at 80 Amps....the optimum (not the fastest) cut speed is close to 30 inches per minute, cut quality will be dross free, and we would expect approximately 1800 to 2500 inches of cut (not less than 8'!) before the electrode and nozzle should be changed. Pierce time for this system under these cutting conditions would be .75 seconds, not 4 seconds as you suggest. I'd be happy to set up this type of cut and videotape it for reference.....if the Everlast guys would be willing to do the same!
Perhaps you could send me a note to let me know where this demo took place...I'd like to determine what was the issue. I look forward to hearing from you, Jim Colt jim.colt@hypertherm.com
If you are cutting 3/8" plate at a 42 degree bevel with a Hypertherm Powermax1250 at 80 Amps....the optimum (not the fastest) cut speed is close to 30 inches per minute, cut quality will be dross free, and we would expect approximately 1800 to 2500 inches of cut (not less than 8'!) before the electrode and nozzle should be changed. Pierce time for this system under these cutting conditions would be .75 seconds, not 4 seconds as you suggest. I'd be happy to set up this type of cut and videotape it for reference.....if the Everlast guys would be willing to do the same!
Perhaps you could send me a note to let me know where this demo took place...I'd like to determine what was the issue. I look forward to hearing from you, Jim Colt jim.colt@hypertherm.com
Just went to a demonstration today of their 80 amp unit on a plasma table. I wasn't particularly impressed. Hypertherm touts its long life consumables, and the consumable didn't even make it through its first 8 ft linear cut on a new table. The techs were mumbling a lot about issues they were having with some things. I am going back tomorrow to see part two of the demonstration so I hope things improve. I know what I have heard about their units have been wonderful, and glowing, but it was struggling to cut 3/8" plate on a 42 degree bevel, around 2 feet per minute cutting speed, and they had to increase pierce delay time to around 4 seconds. Not to discourage anybody from purchasing, one, I was considerably taken back by its performance, since, many people have given such high marks....I was expecting much more performance, after having used our units for so long. I think if they figure out the roasted consumable issue, things might work better. I am sure there is some reason this happening. But as soon as the techs saw the problems, they started making all sorts of excuses about the quality of the air supply and other issues that caused it, but several other Millers are in use around the shop and the tanks is drained daily and high quality dryers are used on the line... It may also have been from the settings within the CNC table. But it was shooting a steady shower of sparks while the pilot arc was engaged.