Recent content by jimcolt

  1. J

    Material building up on plasma torch

    Not all plasma's are the same. Using the right power level and set of consumables as well as correct speed and height and you can achieve 1.5 to 2 degrees of bevel on materials 3/16" and thicker, on thinner materials the bevel angularity will be more, but difference between the top and bottom of...
  2. J

    Cutting Air

    You can minimize the chance of getting slag blown back inside the shield by being sure that you set the pierce height and pierce delay correctly. You will find the proper settings in the Powermax operators manual mechanized cut charts. Correct pierce height is always higher than cut...
  3. J

    How much amperage can you swing with consumables?

    For the Hypertherm systems the amperage rating is listed for each nozzle. Finecuts can run from 10 amps to 45 amps, the 45 amp shielded consumables work best from 30 to 45 amps, 65 amp nozzles work best at 65 amps. There are many pages of mechanized cut charts in the Hypertherm operators...
  4. J

    0-21 Powermax 65

    0-21 error: - If incoming pressure drops below 90 psi....even momentarily while cutting you can get an 0-21 - If you are piercing too close to the material with Finecut consumables you will get this code. Ensure that you are using ohmic contact and that your pierce height is as suggested in the...
  5. J

    Metal prices?

    4 x 8 .090" aluminum sheet, $125 (in New Hampshire 6/14/16) Jim Colt
  6. J

    calculating inches cut?

    Most CAM software that is developed for Plasma cutting will be able to show total length of cut. On my software you simply highlight the part, click on "measure" and it shows the linear cut inches. Jim Colt
  7. J

    Cutting mirror brush finish stainless steel with plastic coating?

    Not sure exactly what you mean by "spray nitrogen at the plasma torch head"....unless you mean to use nitrogen instead of air as the cutting gas. Nitrogen will produce a little less oxidation, but usually more dross on thin stainless as compared to air. I suggest also that you peel the plastic...
  8. J

    Adding height control. Questions?

    Actually...the Powermax45 will cut 1/2" steel with very little bevel.....assuming it pierces at the correct height, then as soon as the pierce is complete.....indexes down to the cut height of .08". The 45 is factory rated to pierce 1/2" if you have a full function height control......3/8"...
  9. J

    Cut Quality Problems

    Actually...the specs were right out of the Hypertherm operators manual. I always suggest trying that first as these charts were developed by cutting tons of steel, stainless and aluminum to determine the best starting points. Variations is metal chemistry will affect cutting......so after you...
  10. J

    Machine Torch tip catching when cutting across a slat.

    I agree......sounds like the torch is running closer than .06", and you always will get a little height variation when running over the slat...as it alters the arc voltage. If you raise the arc voltage by 5 volts, the real time cut height will rise about.020". Put on some #6 shade glasses and...
  11. J

    Cut Quality Problems

    If you open up your manual to the 45 amp shielded cut chart again.....you will see specs for using the same consumables for cutting at 30 amps at 225 ipm on 16 gauge (top part of the cut chart). Even at 170 ipm running with these specs may help. Then, you can flip back a few pages on the cut...
  12. J

    Cut Quality Problems

    Jeff, The higher cut height was for the Powermax65/85/105 when using Finecut consumables......the Powermax45 does not have that capability. Doug, generally if you follow the book specs (height speed amperage) you will be able to eliminate dross. The biggest issue on thin materials is with the...
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