Search academic texts

Information × Registration Number 0215U000413, 0113U002068 , R & D reports Title Increase of wearproofness and longevity of extruders at the baro-thermal processing of grain with additions of minerals popup.stage_title Head Kaplun Vitalij Grigorievich, Registration Date 18-02-2015 Organization Khmelnytskiy National University popup.description2 The thesis is dedicated to improving the durability and longevity of extruder screws and cylinders in the processing of coarse grains with the addition of mineral saponite through proper choice of materials and methods of strengthen their surface. The object of research - the process of friction and wear of the working parts of the extruder for processing grain impurities minerals. The aim of the work there is an increased wear resistance and durability of extruders in the processing of grain impurities minerals. Research Methods: Comparative experimental study of wear resistance of samples from different steels with different technologies of surface hardening, different structures of the material in the model environment on special abrasive friction machines that simulate the operating conditions of the extruder. Properties of the surface layers of friction pairs was determined using metallographic and X-ray diffraction studies of the samples using a PMT-3, MIM-10, DRON-3M. First established patterns of wear of surface layers with gradient coatings and metastable phases in the structure of the material in environment abrasive model solution. It has been shown that the presence of metastable phases, in particular of residual austenite in gradient coatings significantly affect the durability of the abrasive material in the wear, and it is possible to optimize the content of the criterion of maximum wear resistance. First obtained theoretical and experimental dependences for calculation of wear resistance and durability of coatings with gradient metastable structures at abrasive wear. The practical significance of the results. The recommendations for improving the performance of extruders for the processing of feed grain with impurities minerals, which are introduced at JSC "Thermoplastic" (Khmelnitsky) and SPE "Vidnova" (Khmelnytsky). This provided an increase in wear resistance and durability of the extruder by 1.6-1.8 times, reduced costs for repairs up to 30 %. The research results can be used in agricultural and machine-building enterprises Product Description popup.authors Білик Юрій Мирославович Гончар Володимир Антонович Донченко Тетяна Віталіївна Здибель Олександр Станіславович Каплун Віталій Григорович Паршенко Анатолій Васильович Пастух Ігор Маркович popup.nrat_date 2020-04-02 Close