Abrasion Resistance of Surface-Modified Steels Used for Artillery Weapon Barrels

A barrel is one of the most tribologically and thermally loaded parts of artillery weapons. The influence of the salt bath nitrocarburizing and hard-chrome plating of three steels used for artillery barrels on their abrasion resistance is studied in this paper. The tested steels are 42CrMo4, 30CrNiMo8, and 36CrNiMo4 in the initial quenched and tempered state. The test results from the \u27\u27dry sand/rubber wheel\u27\u27 method, after 700 m of wear path, showed that the hard-chrome plating of 42CrMo4 and 30CrNiMo8 steels improved their abrasion resistance. In addition, reduced abrasive wear of 42CrMo4 steel samples was also achieved by nitrocarburizing. Hard chrome-plated samples exhibited good wear resistance due to their greater hardness and bigger thickness of the compound zone in comparison with that obtained on nitrocarburized samples

25 godina Hrvatskog vojnog učilišta "Dr. Franjo Tuđman"

Hrvatsko vojno učilište "Dr. Franjo Tuđman" obilježilo je svoju 25. obljetnicu održavanjem Okrugloga stola "HVU - od Domovinskog rata do sveučilišne zajednice". Skup je raspravom različitih sudionika omogućio sveobuhvatan prikaz uloge i značaja vojne izobrazbe od njezinih začetaka, trenutnog stanja te daljnje transformacije kao samostalnog sveučilišta ili dijela sveučilišne zajednice. Publikacija "25 godina Hrvatskog vojnog učilišta Dr. Franjo Tuđman" zbornik je radova tema i izlaganja pripremljenih za Okrugli stol na HVU-u održan 11. svibnja 2016. godine