Robot arc welding for rail vehicle frames
Tram and rail frame sub-assemblies are welded in single-robot stations with a positioner presenting the part. One engineered configuration uses EFORT ARC12-2000 and ARC12-1400 robots with MIG/MAG in 18 % CO₂ + Ar, 500 A water-cooled pulse sources, a twin-column headstock–tailstock positioner and a two-axis P-type positioner with torch cleaning stations.
The numbers behind this configuration
| Small parts | 7 types, 0.5–17 kg, 4,700 pieces a year |
|---|---|
| Medium parts | Up to 2,520 mm, 45.9 kg, 2,600 a year |
| Robots | EFORT ARC12-2000 and ARC12-1400 |
| Process | MIG/MAG, 18 % CO₂ + Ar, Ø0.8–1.6 mm wire |
| Power source | 500 A water-cooled pulse |
| Positioners | Twin-column headstock–tailstock, two-axis P-type |
Figures come from the project records behind the linked projects below, not from a brochure. Your line will differ — these are what we actually built or engineered.
What we supply
- Part-by-part cycle-time estimate from the weld list
- Positioner selection from part weight, envelope and centre of gravity
- Torch, cleaning station, anti-collision and fume extraction
- Safety concept written as a compliance table against the customer specification
What this application taught us
Every deviation from the customer's technical specification is written into the compliance table and confirmed in writing. Marking a substituted safety device as simply "compliant" is how a project ends in an argument.
What we need from you
- Part drawings or dimensioned photographs, including the deepest recess to be coated or the full weld list.
- The paint or process specification: 1K or 2K, solvent or waterborne, powder, adhesive or wire, with the required film build or weld size.
- The required output — parts or jobs per hour — and the shift pattern.
- Booth or cell dimensions, the conveyor or hanger arrangement, and the hazardous-area classification your safety engineer has assigned.
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