3M Speedglas G5-01 Directives D'utilisation page 15

5
CUT
Fig. 11a ADF G5-01
NOTE: In all welding processes, the arc should only be viewed with the recommended shade darkness (Table 5).
Operation
Shielded Metal Arc Welding (SMAW)
Gas Metal Arc welding (GMAW or MIG) and flux
Core Arc Welding (FCAW)
Gas Tungsten Arc Welding (GTAW or TIG)
Carbon Arc Cutting – Air (CAC-A)
Plasma arc welding (PAW)
Plasma arc cutting (PAC)
Torch Brazing (TB)
Torch Soldering (TS)
Carbon Arc Welding (CAW)
Operation
Oxyfuel Gas Welding (OFW)
Oxygen Cutting (OC)
* As a rule of thumb, start with a shade that is too dark to see the weld zone. Then go to a lighter shade which gives sufficient view of the weld
zone without going below the minimum. In oxyfuel gas welding, cutting, or brazing where the torch and/or the flux produces a high yellow light, it is
desirable to use a filter lens that absorbs the yellow or sodium line of the visible light spectrum.
8 9 10 11 12 13 14
SHADE
Table 5. Recommended Guide for Shade Numbers
(Adapted from ANSI Z49.1-2012)
Electrode Size in. (mm)
Less than 3/32 (2.4)
3/32 – 5/32 (2.4 – 4.0)
5/32 – 1/4 (4.0 – 6.4)
More than 1/4 (6.4)
Light
Heavy
Plate Thickness
Light
Medium 1/8 – 1/2 (3 – 13)
Heavy >1/2 (>13)
Light
Medium 1 – 6 (25 – 150)
Heavy
Arc Current
(Amps)
< 60
60-160
160-250
250-550
< 60
60-160
160-250
250-500
< 50
50-150
150-500
< 500
500-1000
< 20
20-100
100-400
400-800
< 20
20-40
40-60
60-80
80-300
300-400
400-800
---
---
---
in. (mm)
<1/8 (< 3) ---
---
---
<1 (<25) ---
---
>6 (>150) ---
13
5 8 9 10 11 12 13
CUT
SHADE
Fig. 11b ADF G5-01VC
Minimum Protective Recommended*
Shade Shade Number
7
8
10
11
7
10
10
10
8
8
10
10
11
6
8
10
11
4
5
8
8
8
9
10
---
---
---
Recommended*
Shade Number
---
---
---
---
---
---
---
10
12
14
---
11
12
14
10
12
14
12
14
6-8
10
12
14
4
5
8
8
9
12
14
3-4
2
14
4-5
5-6
6-8
3-4
4-5
5-6