WorksheetsSMAW Welding Worksheet
Total questions: 15
Worksheet time: 8mins
During SMAW, porosity is observed despite using a basic electrode (ISO 2560-A E51 5 B 32). Which factor below is the most probable root cause based on ISO 3834 consumable control requirements?
Operator travel speed slightly below recommended range
Electrode exposed to atmosphere beyond allowable time
Shorter arc length than normal
Low welding amperage
A welding supervisor must choose electrodes for high-strength structural steel requiring low hydrogen weld metal. Which SMAW electrode classification is most appropriate?
ISO 2560-A E35 0 R 11
ISO 2560-A E51 5 B 32
ISO 2560-A E43 0 RC 12
ISO 2560-A E38 0 A 10
A welder runs SMAW using DC- polarity (DCEN) for a rutile electrode. Which result is most likely?
Greater penetration with narrow bead
Reduced penetration and unstable arc
Excessive spatter due to arc blow
Deeper fusion due to electron flow toward electrode
What is the primary shielding function of the flux in SMAW?
Reduce slag inclusions
Develop a gaseous barrier that prevents atmospheric contamination
Increase deposition rate through iron powder
Strengthen the HAZ microstructure
You observe excessive slag entrapment on fillet welds using a rutile electrode. Which corrective action aligns best with SMAW principles?
Increase arc length to widen bead
Reduce weaving and maintain proper electrode angle
Use higher current to fluidize slag
Switch to DCEN to reduce slag volume
Under ISO 3834, which practice most ensures electrode reliability for low-hydrogen types?
Keeping electrodes sealed in original packaging until use
Extending arc length for better gas protection
Using storage cabinets only for stainless electrodes
Increasing amperage to burn off moisture
A weld procedure requires minimizing hydrogen cracking on 30 mm thick plate. Which combined control plan would be most effective?
DCEN + rutile electrode + slow travel
Preheat + basic low-H electrode + electrode baking
Higher amperage + longer arc + faster travel
AC output + air cooling between passes
Switching from a rutile electrode to a basic electrode will most affect:
Arc voltage stability (more sensitive)
Slag peeling ease (more self-lifting)
Risk of atmospheric contamination (less likely)
Spatter generation (significantly increased)
A basic electrode weld shows undercut. Which cause is most plausible?
Excessive amperage and fast travel speed
Arc length too short
Low heat input for plate thickness
Insufficient slag viscosity
If a weldment requires excellent toughness at -40°C, which electrode is the best choice?
ISO E35 0 R 11 (Rutile)
ISO E51 5 B 32 (Basic)
ISO E43 0 A 10 (Acid)
ISO E43 2 RC 12 (Rutile-cellulosic)
To reduce arc blow on a SMAW root pass near a corner joint, the best procedural change is:
Switch to AC or alter ground clamp placement
Use higher current for arc dominance
Switch to DCEN instead of DCEP
Increase arc length to widen field
The controllable heat source in SMAW is primarily dependent on:
Polarity and current
Flux composition
Arc voltage only
Shielding gas type
If welding vertical-up (3G) with a basic electrode, which technique is best?
Long arc with fast upward motion
Short arc with controlled weave and pause at side walls
DCEN to reduce penetration
Downhand progression for faster fill
Slag is difficult to remove on a finished bead. Which root cause is most consistent?
Interpass temperature too low
Insufficient arc force and slow travel
Polarity reversal during final pass
Electrode type too high in iron powder
Which reflects the philosophy of ISO 3834 regarding electrode use?
Focus only on mechanical test acceptance
Establish controlled storage, traceability, and handling
Assign responsibility only to welders
Allow substitution of consumables without documentation
