Fremgangsmåde til fremstilling af et bærehjul til kædekøretøjer

摘要

Process for manufacturing drive rollers for the chains of tracked vehicles, comprises the steps of pressing a dished wheel (10) from a circular steel blank in a former , annealing, repressing in the former, and finally machining of the hub and peripheral surfaces. The preferred alloy for the rollers is at least 1% chromium and 0.2% molybdenum, and modulus 1150-1250N/mm2. The heat treatment may be performed in a vacuum oven or a salt bath.