|
|
Thought I would start a new post for this. I did a search on this forum and did not find a answer to my problem. I bought this plasma cutter used about a year and a half ago, found an Craig's list and got a good deal. have not used it a whole lot. mostly sheet metal and some 1/8". I would always have a lot of slag and not so nice looking cuts. I attributed this to my lack of experience and poor technique on my part.Today I needed to cut some 1/4 inch plate for a project. the machine is rated for that and more and I thought it would not be a problem. Wrong I was not able to make a successful cut at all. yes i did have the machine turned all the way up to 27 amps. at first I had it hooked up yo 110 volts but then I moved it to the 220 volt outlet. Same results. I tried every thing I could think I drug the tip I held it off the surface an 1/8" I held it almost a 1/4" of the surface. all I could get out of it was at slower speeds it just blew all the melted slag to the bottom of the cut where it welded back together. at faster speeds it did not penetrate the whole way through. I had the nozzle angled towards me away from me and straight down all with no success.I did check all the obvious things or so I thought. here is what I did maybe I missed something and someone can point me in the right direction. First I do have a good source of clean dry air, I had a good ground I even used the grinder on both side of where I attached the ground clamp. all the consumables are new. just replaced today, as a matter of fact everything in the torch head is new. New cap new swirl ring new nozzle new electrode new o-rings. The cap is just tightened until it makes a faint click. I even tried to tighten the cap a little more and had the same results. All the parts were genuine Hypertherm replacement partsSeems to have a good arc and air flow. I did cut a piece of 20 gauge sheet metal and it did fine. I just cant cut the 1/4 inch that I need. What am I doing wrong or what am I missing?
Reply:The one setting you did not mentions was air pressure. What's the regulator set at? The manual says 60 psi. I have found that it will cut just fine with the nozzle actually touching the plate, it just tends to get slag stuck to the nozzle and seems wears the nozzle out faster, but tends to cut faster/better. I have been able to cut 5/16 plate on a 110v circuit, so I don't think power is your problem.Ian TannerKawasaki KX450 and many other fine tools
Reply:That unit should be able to cut 1/4", it will be a bit slow, but it does a decent job. Make sure your inlet air is between 90 and 120 psi, then set the relator on the unit with the air flowing at the torch...to 70 psi.Jim Colt Hypertherm
Reply:before i got my cutmaster 52 i cut 3/8" plate quite often with my 380. a little slow but it did a nice job.225NT bobcatAEAD200LEScott 125mm175, mm252 w 30A, PT225mm211, TA 181iHyper Therm 380, cut master 529100X & XX, Digital Elite6 Victor setssmith little torch, meco midget kalamazoo band sawsteel max saw evoulution circular saw
Reply:Thanks, I did forget to mention the air pressure. It is set at 60 on the regulator on the machine. I have around 120 going to the machine. on a 50 foot 3/8" hose with a water seperator. I did not try to adjust the air pressure at all. If I remember correctly it has to be in a certain range. To high or to low and the air pressure light blinks, correct me if I am wrong on that.I know it should be able to do 1/4". I found pictures on this website of brackets cut out of 3/8" steel with this model machine. they were cut on a plasma cnc table I believe/Maybe this weekend I will give it another shot. I will try turning the air pressure up and see if that makes a difference. Thanks for the replies |
|
发表于 2021-8-31 22:31:27