Abstract
In order to improve the weakness of poor wear resistance and low strength of bronze worm-gear, new functional coating on the steel worm-gear by tooth surface reformation is investigated. The tooth surface of the steel worm gearing is treated by superfine manganese phosphate conversion coating, ferrous sulfide solid lubricant coating and MoS2 shot peening, respectively. The steel worm gearings with the three treatments are tested on the test-bed. The experimental results show that steel worm gear with the surface reformation can reduce the running-in time, and improve the transmission efficiency and anti-scuffing capacity. This investigation provides an approach to replace bronze worm-gear by steel worm-gear with surface reformations.
