Appendix 3: gas flow comparison chart – Tweco Max 300 w-Merlin 6000GST User Manual

Page 70

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APPENDIX

A-24

Manual 0-2642

APPENDIX 3: GAS FLOW COMPARISON CHART

Material

Preflow

Plasma

Secondary Amperage

scfh

lpm

scfh

lpm

scfh

lpm

Notes

Aluminum

Air

Air

50

63

30

190

90

100

83

39

125

59

150

83

39

125

59

225

83

39

125

59

300

110

52

125

59

ArH2

N2

150

80

38

130

61

300

130

61

280

132

N2

H2O

100

83

39

8

8

Sec gph

150

83

39

9

9

Sec gph

225

83

39

8

8

Sec gph

300

110

52

8

8

Sec gph

Mild Steel

Air

Air

50

63

30

85

40

100

83

39

140

66

150

83

39

140

66

225

83

39

140

66

300

130

61

280

132

Air *

Air

100

83

39

300

142

150

83

39

300

142

225

83

39

300

142

300

110

52

300

142

N2

O2

Air

50

42

20

60

28

95

45

100

62

29

83

39

140

66

150

62

29

83

39

140

66

225

62

29

83

39

140

66

300

83

39

110

52

140

66

N2

O2 *

Air

100

62

29

83

39

300

142

150

62

29

83

39

300

142

225

62

29

83

39

300

142

300

83

39

110

52

300

142

Stainless Steel

Air

Air

50

78

37

230

108

100

83

39

140

66

150

83

39

140

66

225

83

39

140

66

300

130

61

280

132

Air *

Air

100

83

39

300

142

150

83

39

300

142

225

83

39

300

142

300

110

52

300

142

ArH2

N2

150

83

39

180

85

300

130

61

280

132

N2

H2O

100

83

39

8

8

Sec gph

150

83

39

3 to 9

3 to 9

Sec gph

225

83

39

7 to 9

7 to 9

Sec gph

300

110

52

8

8

Sec gph

* = Cutting is done wet or underwater (water table)

Gases Used

Flow Used

Gas Flow Comparison Chart

Preflow

Plasma

Secondary

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