Parts
Bellows, flange, and inner liner
Manual loading into a fixture, with robot welding after first-piece teaching and process confirmation.
Case Study
Bellows, flange, and liner robotic laser welding system.
A robotic laser welding system concept for bellows-to-flange and bellows-to-inner-liner welding, combining wire-fed laser welding, autogenous laser welding, fixture positioning, and gas shielding.
Materials
Inconel, 409NImod, and 304 stainless
Inconel 625 to 409NImod uses wire-fed laser welding; Inconel 625 to 304 stainless uses autogenous laser welding.
Shielding
External and internal gas protection
The fixture design routes shielding gas around the weld and into sealed cavities to reduce oxidation risk.
System Concept
Robot, laser, positioner, fixture, and safety package.
| Module | Reference Configuration | Role in the Case |
|---|---|---|
| Robot | ARC12-1400 class six-axis robot | Path control around circular and spatial welds. |
| Laser | 2kW fiber laser reference package | Low heat input welding for high-value alloy assemblies. |
| Workholding | Dual-axis positioner, chuck, and custom welding fixture | Controls weld access, posture, and repeatability. |
| Process assist | Wire feeder, shielding gas routing, and enclosed guarding | Supports fit-up tolerance, oxidation control, and operator safety. |
Production Notes
What the buyer must control.
- Fixture positioning and repeatability for circular weld location
- Clean weld area without oil, water, oxide scale, burrs, or sagging defects
- Stable shielding gas coverage for both outside weld and internal cavity protection
- Manual loading method, first-piece teaching, and locked robot program before production
Next Step
Use this format for early application review.
Each new case should capture part geometry, material pairing, welding method, fixture logic, and acceptance requirement.