Quiet and comfortable – One of the main sources of rail noise is the rolling sound emitted by the wheels. The more corrugations or slip waves there are on the rail surface, the more noise is generated. This can even lead to annoyingly high-pitched squealing noises in the worst cases. High Speed Grinding smoothens out the rail, optimizing the wheel-rail contact and reducing the rail surface roughness that produces noise. Preventive rail maintenance using the HSG-2 improves rail acoustics considerably by up to 10 decibels. This results in distinctly quieter rail traffic, and the squealing sound typically heard after rails have been newly ground is also noticeably absent. And not only that: the machining itself is comparatively quiet, which in turn significantly minimizes the stress for passengers and residents in the area.
HSG-2 Grinding train – 80 km/h and in sync with the timetable
Smart. Fast. Efficient. Rail maintenance within the timetable.
Axle loads, high speeds, load tonnage, heavy acceleration and heavy deceleration cause the contact between the wheel and the rail to produce rail defects such as head checks, corrugations and slip waves (Verlinkung). Consequently, rails that have not been reprofiled have to be replaced far too early and at considerable expense. Our solution for standard-gauge routes: intelligent and preventive maintenance using the HSG-2.
High Speed Grinding (HSG) doesn't just remove minor and median rail defects; it prevents defects from forming and thus prolongs the rail's service life by up to 100%. Thanks to high operating speeds of up to 80 km/h, the HSG-2 is extremely flexible and can be scheduled to slot into any timetable without any track closures whatsoever or having to prepare the track in advance. The HSG-2's revolutionary technology allows up to 60 km of track to be ground non-stop. It produces virtually no sparks or dust during the operation and effectively reduces the noise emitted by rail traffic by 3 to 10 decibels.
To supplement to its purely rail-machining role, in the future the grinding train will also be a diagnostics vehicle. Equipped with measuring and testing technology, the HSG-2 will log the condition of a rail during every pass and in so doing compile a database for our revolutionary and highly efficient maintenance concept, Smart Maintenance.