Surface finishing of aluminium: chrome-free powder coating, colour anodising, hard anodising and passivation in Bielefeld.

TK Oberflächentechnik GmbH

BielefeldNew on Amplifa

Four decades of experienceExperience in powder coating, anodising and passivation

BielefeldLocation

6,5 mMaximum component length powder coating

Small to medium seriesLot sizes

About TK Oberflächentechnik

TK Oberflächentechnik GmbH in Bielefeld specialises in the surface finishing of aluminium. The company offers chrome-free powder coating in accordance with GSB-International guidelines, decorative colour anodising (EV1 Alu-Natural, EV6 Black, Red, Blue), hard anodising and passivation. Coating is carried out in almost all RAL colours, NCS colours as well as metallic and C colour tones. The range extends from aluminium profiles up to 6.5 metres in length (powder coating) to components up to 1.7 metres in anodising and passivation up to 6 metres in length. Individual parts, small and medium series are processed, including complex geometries. Customers come mainly from the construction sector and plant engineering. Building on four decades of experience, the company operates as an approved GSB coater with chrome-free pretreatment and maintains a quality management system certified to DIN ISO 9001.

Site: Bielefeld
Processes: Chrome-free powder coating, Colour anodising (colour anodised finish: EV1 Alu-Natural, EV6 Black, Red, Blue), Hard anodising (Hard Coating), Passivation of aluminium, Chrome-free pretreatment, Chrome-free powder coating (RAL, NCS, metallic, C colour tones), Colour anodising (EV1, EV6 Black, Red, Blue), Hard anodising
Materials: Aluminium, Chrome-free powder coating, Colour anodising (EV1, EV6), Hard anodising (Hard Coating), Passivation
Certificates: DIN ISO 9001, GSB coater (approval for chrome-free pretreatment), GSB coater (chrome-free pretreatment)
Industries: Construction sector, Plant engineering

01
Consultation and order capture
02
Chrome-free pretreatment
03
Powder coating or anodising/passivation
04
Thermal cross-linking (for powder coating)
05
Quality assurance
06
Shipping and logistics

Materials & Processes

Alu

Aluminium

Central material for powder coating, anodising and passivation, from profiles to small components.

PULV

Chrome-free powder coating

Coating in accordance with GSB guidelines in RAL, NCS, metallic and C colour tones up to 6.5 m component length.

ELOX-F

Colour anodising (EV1, EV6)

Decorative anodised finish in Alu-Natural, Black, Red and Blue for components up to 1.7 m in length.

HARTEL

Hard anodising (Hard Coating)

Wear-resistant hard anodised layer for individual parts up to small series, components up to 1.7 m.

PAS

Passivation

Chemical corrosion protection for components up to 6 m in length, among others for the construction sector and plant engineering.

Locations

Bielefeld

Powder coating and anodising plant

Lot size: Individual parts to medium series
Materials: Aluminium

Powder coating line
Anodising line

Components

**Powder-coated aluminium component**Powder coating · Construction sector

**Colour-anodised component**Colour anodising · Plant engineering

**Hard-anodised component**Hard anodising · Plant engineering

**Passivated component**Passivation · Construction sector

Inside the production

Powder coating at the Bielefeld anodising plant

Industries

Construction sectorPlant engineering

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Chrome-free powder coatingSurface	–	6,5 metres	–	Small series – Medium series	Aluminium
Colour anodising (colour anodised finish: EV1 Alu-Natural, EV6 Black, Red, Blue)Surface	–	1,7 metres	–	–	Aluminium
Hard anodising (Hard Coating)Surface	–	1,7 metres	–	Individual parts – Small series	Aluminium
Passivation of aluminiumSurface	–	6 metres	–	–	Aluminium
Chrome-free pretreatmentSurface	–	–	–	–	Aluminium

Additional services

Chrome-free powder coating (RAL, NCS, metallic, C colour tones)Colour anodising (EV1, EV6 Black, Red, Blue)Hard anodisingPassivationConsultation

Quality

The quality management system is certified by TAW-CERT Zertifizierungsgesellschaft to DIN ISO 9001 for powder coating (pretreatment, coating, thermal cross-linking) and anodising (technical, decorative and hard anodising). As an approved GSB coater, pretreatment is performed chrome-free in accordance with GSB-International guidelines.

Evidence	Bielefeld
DIN ISO 9001
GSB coater (chrome-free pretreatment)

History

Renaming of TK-Oberfläche GmbH to TK Oberflächentechnik GmbH at the Bielefeld location
Development of four decades of experience in powder coating, anodising and passivation of aluminium