Technology
Reliable, high friction
MICROLOCK can be used on both sides of a thin component or as a gripping surface on one side of a tool.
The uniqueness of MICROLOCK lies within the microscopic structure and pattern of millions of strictly controlled microspikes in the surface. By controlling all parameters of the micromechanical interlocking elements (spikes), it is possible to achieve a coefficient of static friction of 1 with exceptionally low deviation (below 5%). The patterns allow for 100% quality control of the micro-geometry and thereby the friction properties.
The superb control of MICROLOCK is in sharp contrast to conventional friction shims with random orientation, distribution and size of hard, foreign particles in the surface.
Features
- Millions of tough, ceramic microspikes
- Tailored for optimal strength
- Precise, controllable, predictable
The base material for MICROLOCK is steel and stainless steel, and the hardness of the microspikes is higher than conventional structural materials, so any material can be mated with MICROLOCK. Steel, aluminium, cast iron, hardened steel, composites – anything goes.
Benefits of MICROLOCK
- Coefficient of static friction, µ = 1.0
- Low variation of µ ( +/- 5% )
- Independant of lubrication
- High shear load capacity
- Outstanding quality control
Due to the structure, composition and mechanical properties of MICROLOCK, extreme contact pressures are easily tolerated. The microspikes are not crushed or damaged, even under surface pressures over 400 MPa. This is greatly important in many fastening applications, as dynamic strain enduces different levels of contact pressure in eg. bolted joints.
The maximum service temperature of MICROLOCK is 650ºC, making it practically suitable for all applications.
We develop and produce our own components with MICROLOCK, as well as offer it as a coating service of your parts.
Conventional friction shims are primarily produced by either a electroless nickel deposition with diamonds or by thermal spraying. Both technologies increases the friction, but there are however drawbacks compared to MICROLOCK, as depicted below.
Bolt Science has recently released an article about the different types of friction shims on the market, and it gives a great insight to the possibilities.
