Contract powder coating, pretreatment and surface technology for metal and cast parts in Waldbröl
M. Stöcker GmbH
Waldbröl, Käthe-Kollwitz-Straße 8New on Amplifa
About us
M. Stöcker GmbH is an owner-managed family business in Waldbröl specialising in contract powder coating and surface technology. On 1,500 m² of production space, the company coats components made of bare and hot-dip galvanized steel, aluminium, stainless steel and all common cast surfaces using fully and semi-automatic powder coating systems. The service portfolio includes alkaline degreasing with nano-conversion treatment, shot blasting to Sa 2.5, outgassing of cast parts up to 230 °C, paint stripping, KTL coating, anodising, ESD coating as well as masking, assembly and packaging. Components up to 3,300 x 2,100 x 1,200 mm and 600 kg are processed from single parts to large series, with small-part batches up to 30,000 parts per shift on the automatic system. The quality management system has been certified by TÜV Saar to DIN ISO 9001:2015 since 2007; the company is also an approved supplier to Deutsche Bahn under DBS 918340. Customers come from rail vehicle construction, mechanical engineering, metal furniture and façade construction.
- Site
- Waldbröl
- Processes
- Powder coating (fully and semi-automatic), Powder coating (automatic system, small parts), Alkaline degreasing & nano-conversion treatment, Shot blasting (sand blasting, steel shot S 170), Outgassing of cast parts (hot-air blower oven up to 230 °C), Paint stripping, Sand blasting, KTL coating (cathodic dip painting)
- Materials
- bare steel, hot-dip galvanized steel, aluminium, stainless steel, cast surfaces (all common types), surfaces with electroplated protective layers, Powder coating (epoxy, polyester, effect, structured, ultra-thin-layer), Bare steel
- Certificates
- DIN ISO 9001:2015, Qualisteelcoat C4-H, Qualisteelcoat C5-H, DBS 918340 (Deutsche Bahn approval), DIN ISO 9001:2015 (TÜV Saar, since 2007)
- Founded
- 1985
- Employees
- 13
- Industries
- Railway/rail vehicles (Deutsche Bahn supplier), Mechanical engineering, Metal furniture, Façade construction, Metal processing, Railway/rail vehicles (Deutsche Bahn supplier)
- 01
Alkaline degreasing & nano-conversion treatment
- 02
Shot blasting (steel shot S 170)
- 03
Outgassing/drying in hot-air oven up to 230 °C
- 04
Covering/masking
- 05
Powder coating (automatic or manual system)
- 06
Curing with documented parameters
- 07
Quality assurance/test reports
- 08
Assembly, packaging, delivery (own truck or freight forwarder)
Materials & Processes
Powder coating (epoxy, polyester, effect, structured, ultra-thin-layer)
Coating of ferrous and non-ferrous metals for improved corrosion and wear protection, including ESD and UV-resistant variants for façades.
Bare steel
Coating and pretreatment incl. nano-conversion treatment up to corrosion protection class C4H.
Hot-dip galvanized steel
Pretreatment and coating of galvanized surfaces for lasting corrosion protection.
Aluminium
Powder coating, anodising and UV protection for façade applications; nano-conversion treatment with ≥1,000 h salt spray test.
Stainless steel
Coating of stainless steel components on the fully and semi-automatic systems.
Cast surfaces (all common types)
Pretreatment by shot blasting, outgassing up to 230 °C and powder coating.
KTL coating
Cathodic dip painting as a corrosion protection process within the service portfolio.
ESD coating
Electrically dissipative powder surfaces for applications requiring dissipative properties.
Locations
Waldbröl
DEProduction and administration
- Part weight / size
- up to 600 kg (3,300 x 2,100 x 1,200 mm)
- Lot size
- Single components to large series; small-part batches up to 30,000 parts per
- Materials
- Steel (bare, hot-dip galvanized), aluminium, stainless steel, cast, electroplated protective layers
- Fully automatic Wagner powder coating system, plastic booth with cyclone recovery, 7 guns (1,500 x 800 x 350 mm, max. 75 kg)
- Semi-automatic powder coating system with manual coating (3,300 x 2,100 x 1,200 mm, max. 600 kg)
- Wheel blast machine (up to 1,300 x 900 mm, steel shot S 170)
- Controllable hot-air blower oven (drying/outgassing up to 230 °C)
- Truck 3.6 t with trailer 2.0 t (max. 22 loading positions)
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Powder coating (fully and semi-automatic)Surface | – | 3300 mm × 1200 mm × 2100 mm | 600 kg | Single components – Large series | Steel (bare), hot-dip galvanized steel, aluminium, stainless steel, cast surfaces, surfaces with electroplated protective layers |
| Powder coating (automatic system, small parts)Surface | – | 1500 mm × 800 mm × 350 mm | 75 kg | Small-part batches – up to 30,000 parts per shift | ferrous metals, non-ferrous metals, cast surfaces |
| Alkaline degreasing & nano-conversion treatmentSurface | – | – | – | – | steel, aluminium, electroplated coatings, hot-dip galvanized coatings |
| Shot blasting (sand blasting, steel shot S 170)Surface | Surface preparation grade Sa 2.5 | 1300 mm × 900 mm | – | Continuous operation | steel, cast surfaces |
| Outgassing of cast parts (hot-air blower oven up to 230 °C)Surface | – | – | – | – | cast parts |
| Paint strippingSurface | – | – | – | – | – |
| Sand blastingSurface | – | – | – | – | Metal |
| KTL coating (cathodic dip painting)Surface | – | – | – | – | – |
| Anodising (anodic oxidation)Surface | – | – | – | – | Aluminium |
| Deburring, compacting, cleaning, masking, mechanical reworkingSurface | – | – | – | – | Aluminium, Metal |
| Quality assurance (coating thickness measurement, cross-cut test DIN EN ISO 2409, mandrel bend test)Testing | – | – | – | – | – |
| Assembly of multi-part products after surface treatmentAssembly | – | – | – | – | – |
| Masking/covering of threads and functional surfacesSurface | – | – | – | – | – |
| Colour consulting (RAL, NCS, Pantone, metallics, special colours)Engineering | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Fully automatic powder coating system with plastic booth and cyclone recovery | Wagner | 1 | 1500 x 800 x 350 mm, max. 75 kg | – | Waldbröl |
| Semi-automatic powder coating system with optional manual coating (manual system) | – | 1 | 3300 x 2100 x 1200 mm, max. 600 kg | – | Waldbröl |
| Wheel blast machine (shot blasting) | – | 1 | Workpieces up to 1300 x 900 mm in diameter | – | Waldbröl |
| Controllable hot-air blower oven (drying/outgassing up to 230 °C) | – | – | – | – | Waldbröl |
| Own 3.6 t truck with 2.0 t trailer (max. 22 loading positions) | – | 1 | – | – | Waldbröl |
Additional services
Reference customers
Quality
The QM system has been regularly certified by TÜV Saar to DIN ISO 9001:2015 since 2007. The testing equipment includes coating thickness measurement, cross-cut test (DIN EN ISO 2409), mandrel bend test (DIN EN ISO 1519), ball impact test (DIN EN ISO 6272-1), gloss measurement (DIN EN ISO 2813), boiling test, salt spray test (DIN EN ISO 9227) as well as test reports.
| Evidence | Waldbröl |
|---|---|
| DIN ISO 9001:2015 (TÜV Saar, since 2007) | |
| DBS 918340 (Deutsche Bahn approval) | |
| Qualisteelcoat C4-H | |
| Qualisteelcoat C5-H |
History
- 1985
Founded by Manfred Stöcker
- 1995
Expansion to a total of 1,500 m² of production space
- 2007
First QM certification by TÜV Saar, regularly recertified ever since