SECTION 4
OPERATION
4-12
NOTICE
Refer to Cutting Process Data for recommended
flow/pressure settings.
Stainless Steel
Material Thickness:
Material Thickness:
Material Thickness:
Material Thickness:
.125" to .625" (3,2 mm to 15,9 mm)
Cut Qualities:
Cut Qualities:
Cut Qualities:
Cut Qualities:
•
Matted cut edge appearance
•
Light gray color
•
Much smoother finish
•
Possible slight increase in cut angle
Plasma Gas:
Plasma Gas:
Plasma Gas:
Plasma Gas:
Air
Shield Gas:
Shield Gas:
Shield Gas:
Shield Gas:
Air/Methane
Discussion:
Discussion:
Discussion:
Discussion:
Too much methane in the shield gas mixture can result in more dross
formation. 4:1 ratio air to methane is recommended. Because methane
is a fuel gas, possible slight increase in cut angles could be experienced.
Material Thickness:
Material Thickness:
Material Thickness:
Material Thickness:
.125" to .625" (3,2 mm to 15,9 mm)
Cut Qualities:
Cut Qualities:
Cut Qualities:
Cut Qualities:
•
Dark cut face similar to air
•
Excellent dross performance
•
Good cut angle
Plasma Gas:
Plasma Gas:
Plasma Gas:
Plasma Gas:
Nitrogen
Shield Gas:
Shield Gas:
Shield Gas:
Shield Gas:
Nitrogen
Discussion:
Discussion:
Discussion:
Discussion:
Shield and plasma gases combine, the volume/pressure of shield gas
can negatively affect cut squareness. Higher shield volume produces a
negative cut angle. A lower volume, produces a positive angle.
Material Thickness:
Material Thickness:
Material Thickness:
Material Thickness:
.187" to .625" (4,7 mm to 15,9 mm)
Cut Qualities:
Cut Qualities:
Cut Qualities:
Cut Qualities:
•
Shiny cut face
•
Lip formation at the bottom
•
Dross formation can be extensive and difficult to remove
Plasma Gas:
Plasma Gas:
Plasma Gas:
Plasma Gas:
Nitrogen
Shield Gas:
Shield Gas:
Shield Gas:
Shield Gas:
Nitrogen/Methane
Discussion:
Discussion:
Discussion:
Discussion:
Because methane is a fuel gas, flow/pressure rates can affect the cut
angle. High flow/pressure results in a negative cut angle, low
flow/pressure results in a positive cut angle. Nitrogen to methane ratio is
10 to 14 parts N
2
/ 1 part CH
4
. The lip formed on the cut face bottom is
severe, making Nitrogen/Methane shield gas combination unsuitable for
some finished part applications.
Summary of Contents for Precision Plasmarc
Page 16: ...SECTION 1 SAFETY 1 10 This page intentionally left blank ...
Page 20: ...SECTION 2 DESCRIPTION 2 4 Page intentionally left blank ...
Page 122: ...SECTION 4 OPERATION 4 88 Page intentionally left blank ...
Page 182: ...SECTION 7 REPLACEMENT PARTS 7 2 1 2 3 4 5 6 7 8 7 3 Plasmarc Power Source Exterior Components ...
Page 184: ...SECTION 7 REPLACEMENT PARTS 7 4 1 2 3 4 5 6 7 8 9 10 11 See TEE Detail Page 7 12 ...
Page 186: ...SECTION 7 REPLACEMENT PARTS 7 6 1 2 3 4 5 6 7 8 9 10 11 12 13 ...
Page 190: ...SECTION 7 REPLACEMENT PARTS 7 10 9 10 7 8 1 2 3 4 5 6 7 11 12 13 14 ...
Page 192: ...SECTION 7 REPLACEMENT PARTS 7 12 7 9 2 8 7 9 3 13 10 12 11 X5 1 4 5 6 2 3 7 8 9 TEE Detail ...
Page 194: ...SECTION 7 REPLACEMENT PARTS 7 14 1 2 3 4 5 6 7 8 9 7 10 ...
Page 196: ...SECTION 7 REPLACEMENT PARTS 7 16 1 2 3 4 5 6 7 8 9 10 11 12 13 ...
Page 198: ...SECTION 7 REPLACEMENT PARTS 7 18 1 2 3 4 5 6 7 7 5 Power Source Power Module ...
Page 200: ...SECTION 7 REPLACEMENT PARTS 7 20 A A 1 2 3 4 5 6 7 8 Section A A ...
Page 202: ...SECTION 7 REPLACEMENT PARTS 7 22 1 2 3 4 5 6 7 ...
Page 208: ...SECTION 7 REPLACEMENT PARTS 7 28 B B Section B B C C Section C C 1 2 3 4 5 6 7 8 ...
Page 210: ...SECTION 7 REPLACEMENT PARTS 7 30 1 2 3 4 5 ...
Page 224: ...SECTION 7 REPLACEMENT PARTS 7 44 Notes ...
Page 225: ......