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Information × Registration Number 0213U000202, 0111U000287 , R & D reports Title Development of science intensive resource-saving methods for surface strengthening of steel products by creating metastable structural phase modification. popup.stage_title Head Cheiliakh Oleksandr Petrovich, Доктор технічних наук Registration Date 25-01-2013 Organization State Higher Educational Institution "Pryazovskyi State Technical University" popup.description2 A research object are superficial layers of steels and cast irons, which will be strengthening with application of the worked out methods and technologies (surface deposition, heat treatment thermal-chemical, plasma treatments and their combinations). The aim of development is an increase of complex of physical, mechanical and operating properties of steels and cast-irons, reliability and longevity of metal parts, that allows to save and keep scarce and expensive alloys and alloying components, and improve production efficiency. The methods of spectral analysis were used on "Spectrovac 1000" quantometers and "SpectroMAXx"; metallographic researches - on "Neophot-21" microscopes with the system of automatic computer analysis САІ-01 (SELMI) and "Nikon Eclipse L150" (Japan), electronic-microscopic researches - on electron microscopes "Ultra55" (Germany), "JSM-6010LA", "JSM-6510A" (Japan); quantitative phase analysis - on the diffract meters of "ДРОН-3" and "Rigaku Ultima IVPro" (Japan); micro-hardness - on "ПМТ-3" hardness - on of ТК-2 "Rockwell" device (ГОСТ 9013-59). Test of impact energy - on "ИО5003" pendulum pile-driver, relative wear-resistance was determined by three methods: friction skidding metal on metal on "МИ-1М" machine , impact-abrasive wear on the special device (Patent №1820300 (USSR) in the environment of the cast-iron poured shot, abrasive wear - on the device of Brinell-Haworth. Discovered were the regularities of structure formation and properties of surface deposited Fe-Cr-Mn metal and influence of various methods and treatments - thermal, chemical, chemical-thermal thermal-cyclical and plasma on chemical and phase composition , structure, the meta-stability of austenite, deformation induced phase transformations at a wear, mechanical properties and wear-resistance of surfacing meta-stable metal, steels and the wear resistant alloyed cast-iron. On the basis of systematic investigations new economically alloyed surfacing materials, methods and technologies of the superficial strengthening of surfacing meta-stable Fe-Cr-Mn of metal, construction, instrumental and wear-resistance steels and the alloyed cast-iron were developed. Conducted productive tests of experimental industrial test parts designated for iron and steel industry and agriculture (wiring of ball rolling mill, blades of crushers, hammers of grain crusher, sheets of protective chamfer for sintering machines) that showed higher (in 1,5-2 times) service lives as compared to serial parts. The obtained results are new and have substantial advantages over their foreign and domestic analogues , as the new materials do not contain expensive and scarce alloying elements (Ni, Mo, W, Nb) and possess increased mechanical and operating characteristics. The expected effect from industrial implementation is estimated to exceed 914 thousand Uah. The results can be used at metallurgical, machine-building, agriculture machine-building, repair-and exploitation enterprises. Product Description popup.authors Гайдаржинський Віталій Миколайович Караваєва Наталія Євгенівна Лівенцов Олег Георгієвич Лейко Наталія Григорівна Лоньшаков Олексій Викторович Матвєєв Євген Александрович Чейлях Олександр Петрович Чейлях Ян Олександрович Шейченко Галина Валентинівна popup.nrat_date 2020-04-02 Close