Coating, additive metal processing, laser welding and mechanical manufacturing from XS to XXL – all in-house.
Stellba Surface Technology AG
5312 Döttingen (Headquarters/Production)New on Amplifa
About Stellba
Stellba Surface Technology AG is an owner-managed Swiss SME headquartered in Döttingen, specializing in customized coating solutions, additive metal processing, laser welding and mechanical manufacturing. In close collaboration with customers, universities and research institutions, the company develops new processes, including thermal spraying with Stellite alloys, Plasma-Transferred-Arc (PTA) and laser deposition welding with wire or powder on an 11-axis CNC-controlled laser welding system with a travel path of 7900 x 4500 x 1000 mm. A development partnership with the CHIRON Group has existed since 2019; since 2021 its AM Cube 3D metal printer has been in industrial use at Stellba for coating, 3D printing and repair. Mechanical manufacturing includes turning (4000 x 2500 mm), milling (13000 x 5000 x 2800 mm), grinding and heat treatment; XXL assemblies are also assembled (crane up to 17 t, hook height 12 m) and repairs of steam and water turbines are carried out. Core industries are turbine and special machinery manufacturing, for example steam turbine parts for operating conditions of 600 °C and 300 bar with tolerances below 0.05 mm. The production area exceeds 2500 m².
- Site
- Döttingen
- Processes
- Thermal spraying (coating), Plasma-Transferred-Arc (PTA), Laser deposition welding / Laserdeposition welding (additive metal processing, coating,, Laser deposition welding with preheating up to 300°C, shielding gas atmosphere (argon), 3/4/5-axis, Laser welding (XXL workpieces), Welding, Turning (mechanical manufacturing), Milling (mechanical manufacturing)
- Materials
- Stellite alloys, Plasma-Transferred-Arc, Laser Deposition Welding (Wire/Powder), Laser Welding, Thermal Spraying
- Certificates
- Materials laboratory & quality assurance, Certified testing procedures, Pressure tests, ISO 9001
- Founded
- 1957
- Employees
- 8
- Industries
- Turbine manufacturing (steam and water turbines), Special machinery manufacturing
- 01
Consulting and Engineering
- 02
Additive Metal Processing / Laser Deposition Welding
- 03
Coating (thermal spraying, PTA)
- 04
Laser Welding
- 05
Heat Treatment
- 06
Mechanical Manufacturing (Turning, Milling, Grinding)
- 07
Assembly
- 08
Quality Assurance and Materials Laboratory
Materials & Processes
Stellite alloys
Core material for the thermal spraying and deposition welding process; specialization in it since 1960.
Plasma-Transferred-Arc
Plasma deposition process for wear and corrosion protection coatings.
Laser Deposition Welding (Wire/Powder)
Additive metal processing with wire or powder, with preheating up to 300 °C under argon shielding gas; components up to 7900 x 4500 x 1000 mm, tolerance < 0.05 mm.
Laser Welding
CNC-controlled laser welding of XXL workpieces on the 11-axis controlled system.
Thermal Spraying
Coating process, among others with Stellite alloys for turbine components.
Locations
Döttingen
CHHeadquarters and Production
- Part weight / size
- Assembly up to 17 t (crane)
- Materials
- Stellite alloys, various metallic materials
- 11-axis CNC laser welding system (7900 x 4500 x 1000 mm)
- AM Cube 3D metal printer (CHIRON Group)
- Crane up to 17 t, hook height 12 m
- Lathes up to 4000 x 2500 mm
- Milling machines up to 13000 x 5000 x 2800 mm
- Grinding machines up to ø 800 x 2000 mm
- Heat treatment up to 900 x 1300 mm
Components & Services
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Thermal spraying (coating)Surface | – | – | – | – | Stellite alloys |
| Plasma-Transferred-Arc (PTA)Surface | – | – | – | – | – |
| Laser deposition welding / Laserdeposition welding (additive metal processing, coating,Additive | <0.05 mm | 7900 mm × 4500 mm × 1000 mm | – | – | Wire, Powder |
| Laser deposition welding with preheating up to 300°C, shielding gas atmosphere (argon), 3/4/5-axisAdditive | – | – | – | – | – |
| Laser welding (XXL workpieces)Joining | – | – | – | – | – |
| WeldingJoining | – | – | – | – | – |
| Turning (mechanical manufacturing)Machining | – | 4000 mm × 2500 mm | – | – | – |
| Milling (mechanical manufacturing)Machining | – | 13000 mm × 5000 mm × 2800 mm | – | – | – |
| GrindingMachining | – | 2000 mm × ø 800 mm | – | – | – |
| Heat treatmentHeat treatment | – | 1300 mm × 900 mm | – | – | – |
| Assembly of XXL assembliesAssembly | – | – | up to 17 tonnes (crane) | – | – |
| Repairs of steam turbines and water turbinesSurface | – | – | – | – | – |
| Coating of steam turbine parts (operating conditions 600°C, 300 bar)Surface | <0.05 mm | – | – | – | – |
| Quality assurance and materials laboratoryTesting | – | – | – | – | – |
| Consulting and engineering / developmentEngineering | – | – | – | – | – |
| Pressure testsTesting | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 11-axis CNC-controlled laser welding system | – | 1 | 7900 mm x 4500 mm x 1000 mm (long travel paths) | – | Döttingen |
| 3D metal printer / additive manufacturing system | CHIRON Group AM Cube | 1 | – | – | – |
| Crane | – | 1 | Hook height 12 m | – | Döttingen |
Additional services
Reference customers
Quality
An in-house materials laboratory and quality assurance with certified testing procedures and complete documentation ensure process reliability; pressure tests complement the inspection.
| Evidence | Döttingen |
|---|---|
| Materials laboratory & quality assurance | |
| Certified testing procedures | |
| Pressure tests | |
| ISO 9001 |
History
- 1957
Company founded in Urdorf as Stellba Schweisstechnik AG
- 1960
Specialization in coating with Stellite alloys
- 1969
Occupancy of the new production hall in Birrhard
- 1981
Expansion of the Birrhard production hall, doubling of production area
- 2002
Commissioning of the new production hall for large-scale mechanics in Baden/Dättwil
- 2006
Relocation of the entire production to a larger company building in Dottikon
- 2014
Name change from Stellba Schweisstechnik AG to Stellba AG; start of use of laser technologies
- 2019
Hiring of Fouad Cheaitani; partnership with the CHIRON Group (AM Cube)
- 2021
AM Cube in industrial use (additive manufacturing with CHIRON)
- 2022
Name change to Stellba Surface Technology AG; new owners and relocation to Döttingen