Finishing of stainless steel surfaces through pickling, electropolishing and passivation – from matte to high-gloss.
Hug Oberflächentechnik AG
Wolfwil (SO) · SwitzerlandNew on Amplifa
About Hug Oberflächentechnik AG
Hug Oberflächentechnik AG in Wolfwil SO specialises in the surface finishing of stainless steel and treats parts ranging from simple industrial components to high-quality components for medical technology, the pharmaceutical industry and sterile technology. Its core business comprises pickling, electropolishing and passivation; additionally, degreasing, blasting, grinding, polishing, ultrasonic cleaning as well as disassembly and assembly are offered. In electropolishing, metal ions are removed electrolytically from the surface, reducing micro-roughness and improving corrosion resistance and cleanability – from single parts to larger series. The company works exclusively with stainless steel and chrome-nickel steel and supplies industries such as plant and apparatus engineering, the food and beverage industry, chemicals, vacuum technology, laboratory technology, aviation and rail technology. The Wolfwil site, occupied in 2009, was built to optimise process flows and is located around 45 minutes from Zurich, Basel, Bern and Lucerne. A delivery and collection service, in-house jig and frame construction as well as transport-oriented special packaging round off the range of services.
- Site
- Wolfwil
- Processes
- Electropolishing, Pickling, Passivation, Grinding, Polishing, Blasting, Cleaning and degreasing, Ultrasonic cleaning
- Materials
- Stainless steel, Chrome-nickel steel, Electropolishing, Pickling, Passivation, Grinding, Polishing, Blasting
- Certificates
- ISO 9001:2015, ISO 14001:2015
- Founded
- 1979
- 01
Receiving / delivery and collection service
- 02
Cleaning and degreasing
- 03
Electrochemical processes (electropolishing)
- 04
Chemical processes (pickling, passivation)
- 05
Mechanical processes (grinding, polishing, blasting)
- 06
Ultrasonic cleaning
- 07
Quality and final inspection
- 08
Special packaging and transport
Materials & Processes
Electropolishing
Electrochemical process for reducing micro-roughness to produce corrosion-resistant, hygienic and easy-to-clean surfaces.
Pickling
Ensures the full corrosion resistance of stainless steel by removing scale layers and heat tints.
Passivation
Creates protective passive surfaces on stainless steel components.
Grinding
Mechanical pretreatment of the stainless steel surface.
Polishing
Mechanical smoothing of the surface up to the desired degree of gloss.
Blasting
Mechanical surface pretreatment of stainless steel parts.
Ultrasonic cleaning
Fine cleaning of stainless steel parts before or after surface treatment.
Degreasing
Removal of grease and oil residues before finishing.
Stainless steel / chrome-nickel steel
The only material group processed – surface finishing from matte to high-gloss.
Site
Wolfwil
CHMain site: surface finishing of stainless steel (pickling, electropolishing, passivation)
- Lot size
- Single parts to larger series
- Materials
- Stainless steel, chrome-nickel steel
- Wastewater treatment plant
- Freshwater treatment
- Supply and exhaust air system with heat recovery
- Endoscope camera
Treated Parts
Inside the production
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| ElectropolishingSurface | – | – | – | Single parts – larger series | Stainless steel, Chrome-nickel steel |
| PicklingSurface | – | – | – | Single parts – larger series | Stainless steel |
| PassivationSurface | – | – | – | Single parts – larger series | Stainless steel |
| GrindingSurface | – | – | – | – | Stainless steel |
| PolishingSurface | – | – | – | – | Stainless steel |
| BlastingSurface | – | – | – | – | Stainless steel |
| Cleaning and degreasingSurface | – | – | – | – | Stainless steel |
| Ultrasonic cleaningSurface | – | – | – | – | Stainless steel |
| Disassembly and assemblyAssembly | – | – | – | – | Stainless steel |
| Jig and frame constructionAssembly | – | – | – | – | – |
| Quality and final inspection with endoscope cameraInspection | – | – | – | – | Stainless steel |
| Transport and special packagingEngineering | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Wastewater treatment plant | – | – | – | – | Wolfwil |
| Freshwater treatment | – | – | – | – | Wolfwil |
| Supply and exhaust air system with heat recovery | – | – | – | – | Wolfwil |
| Endoscope camera | – | – | – | – | Wolfwil |
Additional services
Quality
The goods are consistently inspected after treatment and packaged for transport; thanks to an endoscope camera, parts can also be inspected inside. The baths are constantly monitored to ensure consistent quality.
| Evidence | Wolfwil |
|---|---|
| ISO 9001:2015 | |
| ISO 14001:2015 |
History
- 1979
Foundation of the company; over 45 years of experience in stainless steel finishing.
- 2008
Acquisition of the current company site in Wolfwil to optimise process flows.
- 2009
Timely occupancy of the new company building in Wolfwil SO on 1 January.
- 2014
Receipt of the Environmental Trophy for outstanding commitment to corporate environmental protection.
- 2017
First issuance of ISO 14001:2015 certification by SQS.