Anodizing plant for aluminium and metal processing: anodizing, brightening, dyeing, forming, toolmaking and prototyping in Lüdenscheid
Ernst Butz GmbH
Lüdenscheid (Headquarters, Production) · Lüdenscheid (Toolmaking and Metal Fabrication)New on Amplifa
About Ernst Butz GmbH
The Ernst Butz GmbH, founded in 1964, is an owner-managed family business in Lüdenscheid in the Sauerland region, specialising in the finishing and forming of aluminium. Core services include anodizing to DIN 17611 using the GS process with layer thicknesses of 3 to 20 µm, chemical and electrolytic brightening using the Erftwerk and Brytal processes, and dyeing of anodized parts using immersion and two-stage processes. Before anodizing, the surfaces are treated to DIN 16711, from E0 to E6, with grinding, brushing, polishing, pickling and degreasing. In addition, the company manufactures punched, bent and deep-drawn parts as well as trim strips and lettering on embossing presses up to 630 t, deep-drawing presses and two stretching benches. An in-house toolmaking department produces plastic injection moulds and assembly jigs; prototyping and small-series production in plastics and metal complete the offering. Customers come mainly from the lighting and consumer goods industries, the automotive sector, mechanical engineering, the furniture industry and the furnishings sector.
- Site
- Lüdenscheid
- Processes
- Brightening – Erftwerk process (acidic brightening process, mirror finish), Brightening – Brytal process (alkaline brightening process, mirror-like high gloss), Brightening – chemical, Brightening – electrolytic, Sealing (pore closure of the anodized layer in hot water at at least 96 °C), Surface pre-treatment – Pickling (E0 without pickling/E6 with pickling, according to DIN 16711, Surface pre-treatment – Degreasing, Surface pre-treatment – Grinding (E1, E4, E5)
- Materials
- Aluminium, Aluminium alloys, High-purity aluminium, Plastic, Metal
- Certificates
- DIN EN ISO 9001 (implementation started), ISO 9001
- Founded
- 1964
- Industries
- Lighting industry, Consumer goods industry, Automotive OEMs, Automotive suppliers, Household goods, Mechanical engineering
- 01
Design and Development
- 02
Toolmaking (CAD, CNC)
- 03
Forming (Punching, Embossing, Bending, Drawing, Spinning)
- 04
Surface Pre-treatment (E0–E6)
- 05
Anodizing, Brightening, Dyeing
- 06
Sealing
- 07
Prototyping and small-series through to series production
Materials and Processes
Aluminium
Main material for anodizing, brightening, dyeing and forming processes.
High-purity aluminium
Required for mirror finish using the Erftwerk and Brytal processes.
Aluminium alloys
Finishing of aluminium parts and alloys according to customer requirements.
Plastic
Prototypes and small series as well as tools for plastic injection moulding.
Locations
Lüdenscheid (Altenaer Straße)
DEHeadquarters, Production, Administration
- Materials
- Aluminium, aluminium alloys
- Embossing press up to 630 t
- Deep-drawing press
- 2 stretching benches
- Anodizing tanks
- Matting line (matting pickling bath)
- CAD system
Lüdenscheid (Toolmaking)
DEToolmaking and metal fabrication, in a rented building since 2006
- Lot size
- Prototype to series
- Materials
- Metal, plastic
- CNC tooling machine
- CAD system
Components and Services
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Surface | Layer thickness usually 3 µ – 20 µ | – | – | – | Aluminium, Aluminium alloys |
| Brightening – Erftwerk process (acidic brightening process, mirror finish)Surface | – | – | – | – | high-purity aluminium |
| Brightening – Brytal process (alkaline brightening process, mirror-like high gloss)Surface | – | – | – | – | high-purity aluminium |
| Brightening – chemicalSurface | – | – | – | – | Aluminium |
| Brightening – electrolyticSurface | – | – | – | – | Aluminium |
| Surface | – | – | – | – | Aluminium, Aluminium alloys |
| Surface | – | – | – | – | Aluminium, Aluminium alloys |
| Sealing (pore closure of the anodized layer in hot water at at least 96 °C)Surface | – | – | – | – | Aluminium |
| Surface pre-treatment – Pickling (E0 without pickling/E6 with pickling, according to DIN 16711Surface | – | – | – | – | Aluminium |
| Surface pre-treatment – DegreasingSurface | – | – | – | – | Aluminium |
| Surface pre-treatment – Grinding (E1, E4, E5)Surface | – | – | – | – | Aluminium |
| Surface pre-treatment – Brushing (E2, E4)Surface | – | – | – | – | Aluminium |
| Surface pre-treatment – Polishing (E3, E5)Surface | – | – | – | – | Aluminium |
| PunchingForming | – | – | – | – | Aluminium |
| EmbossingForming | – | – | – | – | Aluminium |
| PressingForming | – | – | – | – | Aluminium |
| BendingForming | – | – | – | – | Aluminium |
| DrawingForming | – | – | – | – | Aluminium |
| Deep drawing (punched, bent and deep-drawn parts)Forming | – | – | – | – | Aluminium |
| SpinningForming | – | – | – | – | Aluminium |
| Trim strip and lettering production (forming and finishing of aluminium)Forming | – | – | – | – | Aluminium |
| Forming | – | – | – | Small series | Aluminium |
| Engineering | – | – | – | – | – |
| Toolmaking – hydraulically and pneumatically assisted assembly jigsEngineering | – | – | – | – | – |
| Engineering | – | – | – | Samples – Series production | Plastic, Metal |
| Quality management – management system according to DIN EN ISO 9001 (implementation started)Testing | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Embossing press (press force up to 630 tonnes) | – | – | – | – | Lüdenscheid |
| Deep-drawing press | – | – | – | – | Lüdenscheid |
| Stretching bench | – | 2 | – | – | Lüdenscheid |
| Anodizing tank | – | – | – | 1997 | Lüdenscheid |
| Matting line (matting pickling bath) | – | – | – | 1999 | Lüdenscheid |
| CNC tooling machine (production of tools in the in-house toolmaking department) | – | – | – | – | Lüdenscheid (rented building since 2006) |
| CAD system (design, CNC programming) | – | – | – | – | Lüdenscheid |
Additional services
Quality
The Ernst Butz GmbH is a long-standing partner of the lighting and automotive industries and relies on established technologies and qualified staff. The implementation of a management system according to DIN EN ISO 9001 has been started and is an integral part of the company strategy.
| Evidence | Lüdenscheid |
|---|---|
| ISO 9001 |
History
- 1964
Foundation of Ernst Butz Eloxal on Karlstraße in Lüdenscheid
- 1969
Takeover of the company Schape und Sturm
- 1974
Relocation to Nordstraße in Lüdenscheid
- 1984
Relocation to Altenaer Straße in Lüdenscheid
- 1986
Merger of the two sole proprietorships and founding of Ernst Butz GmbH
- 1993
Production expansion through integration of an in-house toolmaking department
- 1997
Plant expansion through installation of new anodizing tanks
- 1999
Expansion of the anodizing operations through installation of a matting pickling bath
- 2006
Spin-off of toolmaking and metal fabrication into a rented building
- 2009
Expansion of the matting line to increase capacity by 30%