EasyManuals Logo

Hypertherm ArcGlide Torch Height Control User Manual

Hypertherm ArcGlide Torch Height Control
208 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #142 background imageLoading...
Page #142 background image
4-12 ArcGlide THC Instruction Manual
MAINTENANCE
Additional factors of cut quality
Cut angle
A cut part whose 4 sides average less than 4° of cut angle is considered acceptable.
Note: The squarest cut angle will be on the right side with respect to the forward motion of the torch.
Note: To determine whether a cut-angle problem is being caused by the plasma system or the drive system,
make a test cut and measure the angle of each side. Next, rotate the torch 90° in its holder and repeat the
process. If the angles are the same in both tests, the problem is in the drive system.
If a cut-angle problem persists after “mechanical causes” have been eliminated (see Tips for table and torch, previous
page), check the torch-to-work distance, especially if cut angles are all positive or all negative.
•  A positive cut angle results when more material is re moved from the top of the cut than from the bottom. 
•  A negative cut angle results when more material is removed from the bottom of the cut.
Dross
Low-speed dross forms when the torch’s cutting speed is too slow and the arc shoots ahead. It forms as a heavy, 
bubbly deposit at the bottom of the cut and can be removed easily. Increase the speed to reduce the dross.
High-speed dross forms when the cutting speed is too fast and the arc lags behind. It forms as a thin, linear bead of
solid metal attached very close to the cut. It is welded to the bottom of the cut and is difficult to remove. To reduce
high-speed dross:
•  Decrease the cutting speed. 
•  Decrease arc voltage, to decrease the torch-to-work distance.
•  Increase O
2
in the shield gas to increase the range of dross-free cutting speeds. (Only HyDefinition and HT4400
systems can accommodate mixed-gas shield gases.)
Note: Dross is more likely to form on warm or hot metal than on cool metal. For example, the first cut in a series
of cuts will likely produce the least dross. As the workpiece heats up, more dross may form on subsequent
cuts.
Note: Dross is more likely to form on mild steel than on stainless steel or aluminum.
Note: Worn or damaged consumables may produce intermittent dross.
Straightness of the cut surface
A typical plasma cut surface is slightly concave. The cut surface may become more concave, or convex. Correct
torch height is required to keep the cut surface acceptably close to straight.
A strongly concave cut surface occurs when the torch-to-work distance is too low. Increase the arc voltage to
increase the torch-to-work distance and straighten the cut surface.
A convex cut surface occurs when the torch-to-work distance is too great or the cutting current is too high.
First, reduce the arc voltage, then reduce the cutting current. If there is overlap between different cutting
currents for that thickness, try the consumables designed for the lower current.

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Hypertherm ArcGlide Torch Height Control and is the answer not in the manual?

Hypertherm ArcGlide Torch Height Control Specifications

General IconGeneral
BrandHypertherm
ModelArcGlide Torch Height Control
CategoryCutter
LanguageEnglish

Related product manuals