Tweco PAK 200i - Manual (Page 52)

PAK 200i
4-14 OPERATION Manual 0-5335
Dross Build-up and Top Spatter
Dross is molten material which is not blown out of the cut area and re-solidifies on the plate. Top spatter is
dross which accumulates on the top surface of the workpiece. Excessive dross may require secondary clean-up
operations after cutting.
Kerf Width
The width of material removed during the cut.
Nitride Build-up
Nitride deposits which may remain on the cut edge of the carbon steel when nitrogen is present in the plasma
gas stream. Nitride buildups may create difficulties if the steel is welded after the cutting process.
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.
Right Side
Cut Angle
Left Side
Cut Angle
A-00512
Scrap
Clockwise
Counter-
Clockwise
Art # A-04182
Workpiece
Scrap
Swirl Effect on Side Characteristics Of Cut
To make a square - edged cut along an inside diameter of a circle, the torch should move counterclockwise around
the circle. To keep the square edge along an outside diameter cut, the torch should travel in a clockwise direction.
4.08 Recommended Cutting Speeds
Type Torch: PCH-200 Type Material: Aluminum
Type Plasma Gas: Air Type Secondary Gas: Air
Thickness Tip Output
Amperage
Speed
(Per Minute) Standoff
Plasma Gas
Press
Sec Gas
Press Total Flow (SCFH) Pierce Height
Inches mm (Cat. No.) Volts (VDC) (Amps) Inches Meters Inches mm psi bar psi bar Plasma Secondary Inches mm
0.032 0.8 32-1320 100 35 400 10.2 0.13 3.2 63 4.3 60 4.1 50 340 0.13 3.2
0.050 1.3 32-1320 100 35 250 6.4 0.13 3.2 63 4.3 60 4.1 50 340 0.13 3.2
0.063 1.6 32-1320 100 35 125 3.2 0.13 3.2 63 4.3 60 4.1 50 340 0.13 3.3
0.091 2.3 32-1320 110 35 90 2.3 0.13 3.2 63 4.3 60 4.1 50 340 0.13 3.3
0.125 3.2 32-1320 115 35 60 1.5 0.13 3.3 63 4.3 60 4.1 50 340 0.13 3.3
0.063 1.6 32-1321 118 70 200 5.1 0.13 3.3 50 3.4 60 4.1 60 332 0.13 3.3
0.125 3.2 32-1321 125 70 125 3.2 0.13 3.3 70 4.8 60 4.1 82 332 0.13 3.3
0.188 4.8 32-1321 125 70 85 2.2 0.13 3.3 70 4.8 60 4.1 82 332 0.13 3.3
0.25 6.4 32-1321 130 70 65 1.7 0.13 3.3 70 4.8 60 4.1 82 332 0.13 3.3
0.375 9.5 32-1321 140 70 25 0.6 0.13 3.3 70 4.8 60 4.1 82 332 0.25 6.4
0.500 12.7 32-1321 145 70 15 0.4 0.13 3.3 70 4.8 60 4.1 82 332 0.25 6.4
0.25 6.4 32-1322 125 120 125 3.2 0.19 4.7 60 4.1 60 4.1 78 340 0.25 6.4
0.375 9.5 32-1322 130 120 70 1.8 0.19 4.8 60 4.1 60 4.1 78 340 0.25 6.4