A NEW GENERATION OF BRAKE DISCS

Raymax Applications says it is proud to bring laser technology to the automotive parts sector

New laser cladding technologies make it possible to manufacture low-wear brake discs that can
lead to a significant reduction in fine dust emissions and particles disbursed on roads and race circuits.
Laser metal deposition (LDM) generates high quality coating and cladding with a lifetime that can exceed the durability of galvanic coatings.
Introduced by Laserline GmbH, a German company producing laser systems for industrial use, inhouse research and development meant Laserline high-power diode lasers can be used for repair and hard facing by applying material more resistant to wear than the base material of the original product.
Practical applications are numerous in Australia, from cladding large turbine blades to the landing struts of helicopters.
Raymax Applications explains that cladding with laser technology produces low-wear brake discs on a grey cast iron basis.
It says the comparatively inexpensive base material and its manufacturing processes can still be retained, but decisive parameters are optimised by a powder-based additional layer which is welded on by means of a high-power diode laser.
To provide even more benefits, a wear-protecting layer made of tungsten carbide for example, pure corrosion-protecting layers, can also be applied.
The process of cladding causes a metallic fusion bond created between the applied powder and the base material, but the thermal load on the base material from the laser beam, is low.
This enables particularly fast process speeds with real advantages being gained as practically no distortion is seen in the brake discs. The use of high-power diode lasers for this process is in contrast to other thermal processes.
Friction between brake disc and brake linings generates heat and fine dust which is deposited on the vehicle rim and on the road.
Raymax Applications explains that the advantages of laser-coated brake discs are corrosion and abrasion-resistant surfaces, reduced brake dust load and extended service life.
It says laser-coated brake discs are not only suitable for current combustion engines, they will also be used in future electric vehicles, where brake discs will have to meet the need for low particulate emissions.

For more information, contact Raymax Applications on info@raymax.com.au