CNC Setup Challenge
ManufacturingSet speeds, feeds and work offsets - then watch the part cut in 3D.
Design3D planned3D (Three.js)14 min
Weld Parameter Pro
Heat input, amperage and travel speed - dial in a sound weld.
Difficulty: IntermediatePlay time: about 12 minutes
Play Weld Parameter Pro nowOpens the full-screen game - or play in place below.
Workplace narrative
The shop has a batch of 6 mm plate brackets to weld and the last welder burned through two of them with bad parameters. Your job: calculate the heat input the joint actually needs, pick the right amperage for the process, then set the travel speed that keeps the weld inside the heat-input window. A good weld is a number problem first and a hand-skill problem second - get the numbers right and the bead will follow.
Why this skill matters
Heat-input control and procedure discipline are what separate coded welders from amateurs. Strong performance supports the Welding and Metal Fabrication pathways.
Learning objectives
- Calculate weld heat input in kJ/mm
- Select appropriate amperage for material and process
- Set travel speed to hit a target heat input
- Order the weld procedure correctly and read defects
Equipment and components
MIG welding machine6 mm mild steel plate0.9 mm solid wire, argon/CO2 shield gasTravel speed controlsWeld gauges and inspection toolsPPE (hood, gloves, leathers)
Technical principles
- Heat input = volts x amps x 60 divided by travel speed (mm/min), in kJ/mm
- Too much heat input: burn-through, distortion, coarse grain
- Too little: lack of fusion and cold lap
- Procedure comes before the arc: clean, fit, tack, set, weld, inspect
How to play
- Convert units carefully - amps x volts gives watts, then factor time
- For the travel-speed task, rearrange the heat input formula first
- Order the procedure the way a coded welder would
- Read the explanations to learn what each defect costs
Rules
- Each question is worth 10 points plus streak bonuses
- Hints cost 3 points
- Pass each level with 70% or more
Formula and calculation section
Heat Input
H = (V x I x 60) / (travel x 1000)
kJ/mm, with travel speed in mm/min. The single most important number for weld quality.
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Play right here
The full game runs on this page - no account, no install. Or open the full-screen play mode with the button above.
Level 1/2Score 0Streak 0Hints 0
Your shift briefing
The shop has a batch of 6 mm plate brackets to weld and the last welder burned through two of them with bad parameters. Your job: calculate the heat input the joint actually needs, pick the right amperage for the process, then set the travel speed that keeps the weld inside the heat-input window. A good weld is a number problem first and a hand-skill problem second - get the numbers right and the bead will follow.
Feedback approach
Explanations show the full substitution path and what the resulting number means for the weld quality.
Common mistakes
- Forgetting to convert travel speed or joules to kilojoules
- Choosing maximum amperage for every joint
- Welding dirty or poorly fitted joints and hoping the arc fixes them
- Skipping the visual inspection after the weld
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Keep learning
Return to the Welding hub to see the full skill path.