MK Welding PC 100 LCD CNC, Руководство пользователя

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before moving on. Adjust drag speed as desired/ required.
5.
Direction of Cut
- The plasma gas stream swirls as it leaves the torch to maintain
a smooth column of gas. This swirl effect results in one side of a cut being more
square than the other. Viewed along the direction of travel, the right side of the cut
is more square than the left.
To make a square-edged cut along an inside diameter of a circle, the torch should move
counter clockwise around the circle. To keep the square edge along an outside diameter cut,
the torch should travel in a clockwise direction.
6.
Quality Cuts - Dross (slag) is the excess material that spatters and builds up on
the underside of the work-piece as you cut. Dross occurs when the operating
procedure and technique is less than optimal. It will require practice and experience
to obtain cuts without dross. Although less than optimal cuts will contain dross, it is
relatively easy to remove by breaking it off using pliers or chipping off with a chisel
or scraping or grinding the finished cut as needed and is generally only a minor
inconvenience.
A combination of factors contributes to the build-up of dross. They include; material type,
material thickness, amperage used for the cut, speed of the torch across the work-piece,
condition of the torch tip, input line voltage, air pressure, etc. Generally there is an
inversely proportional relationship between output current and speed of cut. Do not use
more output current than is necessary and adjust speed of cut toward minimizing dross
build-up on underside of cut. Experiment with adjusting current and speed to minimize
dross.
When dross is present on carbon steel, it is commonly referred to as either ‘high speed,
slow speed, or top dross’. Dross present on top of the plate is normally caused by too
great a torch to plate distance.