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ESK NEWS


Successful quality management system
July 27, 2009

On July 23, ESK Ceramics GmbH & Co. KG successfully passed the surveillance audit of its quality management system to ISO 9001:2008 and 14001:2004. In the audited departments, the two auditors from TÜV Süd were able to satisfy themselves that the ESK quality management system is not only systematically implemented but also developing continuously.


ESK Successfully Recertifies for the Automotive Industry
July 25, 2009

ESK Ceramics GmbH & Co. KG has successfully renewed the certification of its quality management system to ISO TS 16949 in the field of surface engineering. This ESK business division primarily produces high-friction coatings on materials for the automotive industry.

FRICTION SHIMS WITH ELECTROLESS NICKEL COMPOSITES SURFACES

EKagrip® FRICTION SHIMS WITH ELECTROLESS NICKEL COMPOSITES SURFACES

Wherever components must be reliably joined together to transmit forces and torques, EKagrip® friction shims provide simple, reliable and technically mature solutions.

EKagrip® friction shim is a metal foil with a friction-enhancing coating based on electroless nickel with embedded hard material (= electroless nickel composites surface).

Applications

EKagrip® friction shims have proven themselves millions of times in general mechanical engineering, in machine tools, marine engineering, wind and water power generators, turbines, automotive engineering and motor sports.

Properties

EKagrip® shims are characterized by:

  • Microscale interlocking with the joint surfaces
  • Adjustable and reproducible surface properties
  • Enables weight and packaging-optimized designs
  • Static friction increase by up to 300 %
  • Easy assembly and resassembly

Many years of industrial experience and technical support by laboratory and bench tests ensure that EKagrip® friction shims meet any requirements.

fileadmin/esk/plain/ekagrip-e.html

Functional Coatings
Material properties EKagrip® 10 EKagrip® 20 PLUS EKagrip® 25 PLUS
Form as supplied Shim with
EKagrip® 10
coating
Shim with
EKagrip® 20 PLUS
coating
Shim with
EKagrip® 25 PLUS
coating
Hard particle Diamond Diamond Diamond
Mean particle size 10 µm 20 µm 25 µm
Diamond-surface
concentration
8-16% 8-20% 8-25%
Matrix material Electroless nickel
phosphorus
Electroless nickel
phosphorus
Electroless nickel
phosphorus
Thickness of matrix y 5-9 µm 10-15 µm 10-20 µm
Total layer thickness x 10-20 µm 20-30 µm 25-35 µm
Heat treatment 150°C ± 10°C
350°C ± 10°C
150°C ± 10°C /
350°C ± 10°C
350°C ± 10°C
Hardness of nickelphosphorus
matrix
approx. 600 HV /
900 HV
approx. 600 HV /
900 HV
approx. 900 HV
Color metallic or charcoal metallic or charcoal metallic or charcoal
Shim material (preferably) C 75 S
(acc. to EN 10132-4)
C 75 S
(acc. to EN 10132-4)
C 75 S
(acc. to EN 10132-4)
Shim thickness d 0.1 mm (others available on request) 0.1 mm (others available on request) 0.1 mm (others available on request)
Max. diameter for 0.1 mm
thick shims
(others available on request)
200 mm 200 mm 200 mm
Thickness tolerance of
base part before coating
± 0.01 mm ± 0.01 mm ± 0.006 mm
Base part production by Laser cutting or
stamping
Laser cutting or
stamping
Laser cutting or
stamping
Mean roughness Rz of
counterpart surface
(transversal to direction of
machining)
Rz << 10 µm Rz << 20 µm Rz << 25 µm
Min. contact pressure P > 50 MPa P > 50 MPa P > 50 MPa
Max. service temperature 400°C 400°C 400°C