Electroplated surface coating of small, mass and rack parts made of metal in Selzach
Galvano Wullimann AG
Bohnackerweg 3, CH-2545 SelzachNew on Amplifa
About Galvano Wullimann AG
Galvano Wullimann AG is a job-shop coater specialising in electroplating, headquartered in Selzach in the Swiss canton of Solothurn, providing functional and decorative surfaces. Its service portfolio covers the coating of metal small, mass and rack parts with a focus on fasteners as well as stamped and fabricated parts. The processes include electroplated nickel plating, hexavalent-chromium-free decorative chrome plating, zinc in transparent, black and iridescent finishes, zinc-nickel, zinc phosphating in thin and thick layer, electroless nickel, electropolishing of stainless steel and anodising of aluminium in eight colours. In addition, derusting, pickling and corrosion protection are offered. With ten large plants, computer-controlled barrel and rack lines and a production volume of 10 to 30 tonnes per day, the company serves industries such as the automotive industry, the construction and fittings industry, the steel tube furniture industry, mechanical engineering, medical technology as well as stamping and screw machining shops. An in-house laboratory for chemical analyses, coating thickness measurement and salt spray testing ensures process control.
- Site
- Selzach
- Processes
- Nickel (electroplated nickel plating), Nickel Chromium (Cr VI free), Nickel Achrolyte, Zinc transparent (An/T0/T2/T4), Zinc black (Fn/T0/T2), Zinc iridescent (Cn/T0/T2/T4), Zinc-Nickel (An/Cn/T0/T2/T4), Zinc-Nickel black (Fn/T0/T2)
- Materials
- Steel, Stainless steel, Aluminium, Metals (metallic small, mass and rack parts), Zinc (transparent, black, iridescent), Zinc-Nickel (An/Cn/Fn, T0/T2/T4, also black), Nickel, Nickel-Chromium (Cr VI free)
- Certificates
- SN EN ISO 9001, SN EN ISO 14001, REACH and RoHS compliance, In-house analysis laboratory, Salt spray testing DIN EN ISO 9227 (up to 3000 h)
- Founded
- 1946
- Industries
- Automotive industry, Construction and fittings industry, Furniture industry/steel tube furniture industry, Mechanical engineering, Medical technology, Stamping and screw machining shops
- 01
Enquiry clarification and consulting in surface technology
- 02
Pretreatment (derusting, pickling)
- 03
Electroplated coating on barrel or rack lines
- 04
Post-treatment (e.g. passivation, phosphating)
- 05
Testing in the in-house laboratory (coating thickness, corrosion)
- 06
Transport and delivery service
Processes and Materials
Zinc (transparent, black, iridescent)
Corrosion protection coating for steel parts as barrel and rack work, up to 2'000 mm rack size or 80 kg barrel weight.
Zinc-Nickel (An/Cn/Fn, T0/T2/T4, also black)
Alloy coating with increased corrosion protection for steel parts, established since 2014 as large-format rack work.
Nickel
Electroplated nickel plating for functional and decorative surfaces, barrel work up to 80 kg.
Nickel-Chromium (Cr VI free)
Decorative chrome plating on a nickel base, hexavalent-chromium-free since 2016, rack size up to 2'000 mm.
Nickel Achrolyte
Nickel process for barrel work up to 80 kg.
Electroless Nickel
Electroless nickel plating for metals up to 600 mm rack size or 30 kg barrel weight.
Zinc Phosphate (Thin and Thick Layer)
Phosphating of steel as a corrosion protection and adhesion base layer, complemented since 2019 with thick layer.
Anodising (colourless, black, grey, yellow, orange, red, green, blue)
Anodic oxidation of aluminium, colourless and black up to 2'000 mm rack size, colour anodising up to 600 mm.
Electropolishing Stainless Steel
Electrolytic smoothing and finishing of stainless steel parts, in the portfolio since 2021, rack size up to 1'000 mm.
Location
Selzach
CHProduction and Administration
- Part weight / size
- Rack parts up to 2'000 mm; barrel batches 30–80 kg
- Lot size
- Mass work and rack work
- Materials
- Steel, stainless steel, aluminium, metals
- 10 large plants for metal finishing
- Computer-controlled, fully automatic barrel line (batches 30–80 kg)
- Computer-controlled, fully automatic rack line (up to 2'000 mm)
- Ni-Cr automatic line (since 1984)
- Salt spray test system
- X-Ray coating thickness measuring device
- Atomic absorption spectrometer (AAS)
- HPLC analysis instrument
Coated Components
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Nickel (electroplated nickel plating)Surface | – | up to 2'000mm (rack) | up to 80kg (barrel) | – | Steel, Metals |
| Nickel Chromium (Cr VI free)Surface | – | up to 2'000mm (rack) | – | – | Steel, Metals |
| Nickel AchrolyteSurface | – | – | up to 80kg (barrel) | – | Metals |
| Zinc transparent (An/T0/T2/T4)Surface | – | up to 2'000mm (rack) | up to 80kg (barrel) | – | Steel |
| Zinc black (Fn/T0/T2)Surface | – | up to 1'000mm (rack) | – | – | Steel |
| Zinc iridescent (Cn/T0/T2/T4)Surface | – | up to 2'000mm (rack) | up to 80kg (barrel) | – | Steel |
| Zinc-Nickel (An/Cn/T0/T2/T4)Surface | – | up to 2'000mm (rack) | up to 80kg (barrel) | – | Steel |
| Zinc-Nickel black (Fn/T0/T2)Surface | – | up to 1'000mm (rack) | – | – | Steel |
| Zinc Phosphate (thin and thick layer)Surface | – | up to 900mm (rack) | up to 80kg (barrel) | – | Steel |
| Electropolishing of stainless steelSurface | – | up to 1'000mm (rack) | – | – | Stainless steel |
| Electroless NickelSurface | – | up to 600mm (rack) | up to 30kg (barrel) | – | Metals |
| Derusting, pickling, corrosion protectionSurface | – | up to 900mm (rack) | up to 80kg (barrel) | – | Metals |
| Anodising colourlessSurface | – | up to 2'000mm (rack) | – | – | Aluminium |
| Anodising blackSurface | – | up to 2'000mm (rack) | – | – | Aluminium |
| Anodising greySurface | – | up to 600mm (rack) | – | – | Aluminium |
| Anodising yellowSurface | – | up to 600mm (rack) | – | – | Aluminium |
| Anodising orangeSurface | – | up to 600mm (rack) | – | – | Aluminium |
| Anodising redSurface | – | up to 600mm (rack) | – | – | Aluminium |
| Anodising greenSurface | – | up to 600mm (rack) | – | – | Aluminium |
| Anodising blueSurface | – | up to 600mm (rack) | – | – | Aluminium |
| Barrel electroplating (fully automatic barrel line, batches 30-80 kg)Surface | – | – | 30 kg (batch) – 80 kg (batch) | – | Steel, Metals |
| Piece plating / rack coatingSurface | – | up to 2'000mm | – | – | Steel, Metals |
| Salt spray testing according to DIN EN ISO 9227 (up to 3000h)Testing | – | – | – | – | Metals |
| Coating thickness testing (X-ray fluorescence/X-Ray, magnetic induction)Testing | – | – | – | – | Metals |
| Atomic absorption spectrometry (AAS)Testing | – | – | – | – | Metals |
| High-performance liquid chromatography (HPLC)Testing | – | – | – | – | – |
| Surface technology consulting / technical support in design and planningEngineering | – | – | – | – | – |
8 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Fully automatic computer-controlled barrel line | – | – | Batches of 30 - 80 kg | – | Selzach |
| Fully automatic computer-controlled rack line | – | – | Coating of steel parts, rack size up to 2'000mm | – | Selzach |
| Ni-Cr automatic line | – | – | – | 1984 | Selzach |
| Large plants for metal finishing | – | 10 | – | – | Selzach |
| Salt spray test system | – | – | – | – | Selzach |
| X-Ray coating thickness measuring device | – | – | – | – | Selzach |
| Atomic absorption spectrometer (AAS) | – | – | – | – | Selzach |
| HPLC analysis instrument | – | – | – | – | Selzach |
Additional services
Quality and Analyses
An in-house laboratory continuously monitors the bath parameters and performs chemical analyses, visual inspections and coating thickness measurements (X-ray and magnetic induction). For testing corrosion protection, a salt spray test system according to DIN EN ISO 9227 is available; all processes are REACH and RoHS compliant.
| Evidence | Selzach |
|---|---|
| SN EN ISO 9001 | |
| SN EN ISO 14001 | |
| REACH and RoHS compliance | |
| In-house analysis laboratory | |
| Salt spray testing DIN EN ISO 9227 (up to 3000 h) |
Company History
- 1946
Founded by Walter Wullimann as a one-man business in the basement of a single-family house
- 1970
Move into the new electroplating building in the newly developed industrial area in Selzach
- 1984
Building extension and installation of a Ni-Cr automatic line for USM production, at that time the largest Ni-Cr plant in Switzerland
- 1991
Construction of a new production hall for zinc and zinc alloys with around 3'000 m²
- 2009
Company taken over by the current owners
- 2014
Establishment of zinc-nickel as large-format rack work
- 2016
Conversion to hexavalent-chromium-free decorative chrome plating
- 2018
Introduction of black zinc-nickel
- 2019
Phosphating complemented with thick-layer phosphating
- 2021
Introduction of electropolishing of stainless steel