Proplus auto-darkening welding helmets – Tweco ProPlus Digital Auto-Darkening Welding Helmet User Manual
Page 13
ProPlus Auto-Darkening Welding Helmets
Manual 0-5276
13
Recommended Protective Filters for Electric Welding
Description of Process
Approximate Range of
Welding Current in Amps
Minimum Shade Number of
Filter(s)
Air - Arc Gouging
Less than or equal to 400
12
Flux-cored Arc Welding (FCAW)
-with or without shielding gas
Less than or equal to 300
11
300 to 400
12
400 to 500
13
Greater than 500
14
Gas Metal Arc Welding (GMAW)
(MIG)
-Aluminium and Stainless Steel
- other than Aluminium and Stainless
Steel
Less than or equal to 250
12
250 to 350
13
Less than or equal to 150
10
150 to 250
11
250 to 300
12
300 to 400
13
400
14
Gas Tungsten Arc Welding (GTAW)
(TIG)
Less than or equal to 100
10
100 to 200
11
200 to 250
12
250 to 350
13
Greater than 350
14
Manual Metal Arc Welding
- covered electrodes (MMAW)
Less than or equal to 100
8
100 to 200
10
200 to 300
11
300 to 400
12
Greater than 400
13
Plasma - Arc Cutting
50 to 100
10
100 to 400
12
400 to 800
14
Plasma - Arc Spraying
—
15
Plasma - Arc Welding
Less than or equal to 20
8
20 to 100
10
100 to 400
12
400 to 800
14
Resistance Welding
—
Safety Spectacles or eye
shield
Submerged - Arc Welding
—
2(5) *
* A shade 5 filter is recommended for watching molten pool in electroslag welding.
Table 4-1 Recommended Protective Filters for Electric Welding
Refer to standard AS/NZS 1338.1:2012 for comprehensive information regarding Table 4-1.