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Plasma not cutting smoothly
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Topic: Plasma not cutting smoothly (Read 4821 times)
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Ratpack
10
Plasma not cutting smoothly
«
on:
January 20, 2015, 02:04:25 PM »
Hi Guys, I am new to this, I need some help with my plasma can anyone help me? I would like to make cleaner cuts with my machine. Thanks you Ratpack
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BR549
6,965
Re: Plasma not cutting smoothly
«
Reply #1 on:
January 20, 2015, 06:49:49 PM »
OK but first you need to define cleaner cuts.
(;-0 TP
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Ratpack
10
Re: Plasma not cutting smoothly
«
Reply #2 on:
January 20, 2015, 09:36:33 PM »
Hello BR549 thanks for now. My cut on the X lines & Y lines are very nice ( smooth ) but when I cut angels to the left or right of a straight line or a curve it it very jagged. My calibration is good, check X travel asked 1" it travels 1" also Y travel same. Tried to slow fed rate down a bit better ( 45" per minute ) from (96 " )
Ratpak
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BR549
6,965
Re: Plasma not cutting smoothly
«
Reply #3 on:
January 20, 2015, 10:30:33 PM »
Is it just a rough cut OR a lot of slag. Do you have AHC (auto height control) ?
(;-) TP
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Ratpack
10
Re: Plasma not cutting smoothly
«
Reply #4 on:
January 20, 2015, 10:59:06 PM »
Not to bad on the slag but angel and curves are very jagged.
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Ratpack
10
Re: Plasma not cutting smoothly
«
Reply #5 on:
January 20, 2015, 11:02:00 PM »
I do not have a THC. I keep the torch about 1/8" to 3/16" off the material manual.
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BR549
6,965
Re: Plasma not cutting smoothly
«
Reply #6 on:
January 20, 2015, 11:04:53 PM »
That is too high for most plasma cutters. Here with a hypertherm I cut at .080 -.100 " off the top of the material. Cutting too high makes the arc wonder around when cutting causing a jagged cut most time.
Consult your plasma's MANUAL for the poper cutting heights and speeds.
(;-) TP
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Ratpack
10
Re: Plasma not cutting smoothly
«
Reply #7 on:
January 20, 2015, 11:11:29 PM »
I did, using a Thermal-dynamic 101 power source it recommends 1/8" and travel speed 225" per minute on 16 ga. mild steel, but it also says plus or minus 50% lot of good that is.
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Hood
25,835
Carnoustie, Scotland
Re: Plasma not cutting smoothly
«
Reply #8 on:
January 21, 2015, 06:03:16 AM »
I have just replied to your PM from the last day but I see you have also posted here on the forum.
TP is the best guy to help with plasma so I will leave you to it, however giving all details about your machine will help such as type of motors/drives and construction. The construction may be especially relevant as in your PM you mention that the machine shakes.
Hood
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Mike E
42
Re: Plasma not cutting smoothly
«
Reply #9 on:
January 21, 2015, 10:31:02 AM »
Just a thought, is your machine configured to "exact stop"? If so, try "constant velocity". As I remember my CV is on but all the settings are off. Also sometimes it helps to have "line look ahead" set to 100 or more.
Mike
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