The pinion from the drive of the cement mill was failure. The teeth ruptured and peeling occurred on the sides of multiple teeth. The failure was only located on one side of the pinion. This type of failure is common with surface-hardened gears. We have found that the failure of the pinion is a direct consequence of the incorrect geometry of the surface hardened layer. The lifespan of the pinion could have been extended if the whole surface of the faces and roots of the teeth had been hardened and if the hardening had been deeper.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 1080159The invention is from the area of non-ferrous metallurgy, and is related to the procedures of etching of aluminium alloys. This procedure is about deep etching and extraction of microstructural constituents from aluminium alloys. The procedure is adapted in a manner to allow complete removal of the aluminium-based matrix while retaining the integrity of examined micorstructural constituents.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 14779414Innovative idea, concept and construction was carried out and controlled by members of the program group in cooperation with Slovenian companies. Since the electrical resistance is one of the most structurally sensitive properties of the materials, we used its measurement to detect microstructural changes caused by phase transformations or chemical reactions. Until now (Up to date), we analyzed the phase transitions in rapidly solidified alloys of copper and aluminum, nickel and nickel alloys, and several types of steel made by Slovenian manufacturers.
F.08 Development and manufacture of a prototype
COBISS.SI-ID: 1175135