Max.
railway tire
diameter
Max. outer
diameter of rolled rings
Max. weight
of rolled
rings
VHM is a traditional manufacturer and supplier of rolled rings and rims for railway vehicles in Central Europe. The key product in this area is specialized production of rolled rims for all types of railway vehicles – trams, locomotives, freight and passenger wagons.
In the rolled ring area, our manufacturing portfolio is focused on industrial applications, such as bearing rings, serrated rims, flanges, crane wheels and other products of this category according to customers’ requests and needs.
Materials | B1-B6, GOST, ClassDHT, S100L, Fe 740, N72, S85V and more |
Inner diameter (dø) | 460 – 1800 mm |
Height (H) | max. 160 mm |
Standards: | Manufactured as per ISO 810-1 |
Material composition and other production and testing parameters can be adapted to the customer’s additional requests.
Materials | 11 523, 15 241, 17CrNiMo6, 30CrNiMo8, 42CrMo4 and more |
Outer diameter (Dø) | max. 2800 mm |
Inner diameter (dø) | min. 280 mm |
Height (H) | 50 – 260 mm |
Wall thickness (s) | 45 – 250 mm |
Weight: | 75 – 2500 kg |
Material composition and other production and testing parameters can be adapted to the customer’s additional requests.
We conduct the following trials and tests for rolled rims and rings:
Rolled rail-bound tires | Rolled rings |
Standard: As per UICa 810-1 | Standard: as requested by the client |
Surface hardness HB (Brinell) | Surface hardness HB (Brinell) |
Tensile test | Tensile test |
Notch test | Notch test |
Hardness test on a test sample | Hardness test on a test sample |
Chemical analysis | Chemical analysis |
Macro + micro structure | Macro + micro structure |
Macro-graphic test (Baumann method) | Macro-graphic test (Baumann method) |
Micro-cleanness | Micro-cleanness |
Grain size | Grain size |
Ultrasound testing | Ultrasound testing |
