Разработка и обоснование технологии восстановления рабочей поверхности железнодорожных крестовин высокопрочными сплавами

Аннотация

Subjects of research: alloys: a steel 110Г13Л, an alloy (electrode) ОМГ-Н, an alloy (wire) of software AH-105, an alloy (electrode) ЦНИИН-4. Purpose of work: research structure and characteristic of the high-strength alloys, the chosen high-strength alloys on structure and properties melted metal, and working out of high-efficiency technology of restoration working surfaces cross-pieces by high-mangancse alloy providing, raised physicomcchanical properties and durability. Method of research: theoretical and experimental studying of structure and properties of high-strength alloys at their restoration, metal-graphic researches. The results obtained and their novelty: on the basis of the threefold diagrammc: «Fe-Cr-Mn» conditions of allocation "dclta-fcrritc" in alloy arc created, that has allowed to raise its plasticity to lower crack-form . On the basis of the spent researches optimum technological modes restoration by high-strength alloys on a working surface cross-pieces arrowshaped translation the transfers, high physicomcchanical properties providing it and durability arc developed. On the basis of the spent complex researches the restoration technique of the difficult worn out surfaces. Practical value: it is designed technological process of melting of crosspieces polyclcctrodcs in stationary condition of enterprise The Railway Company" Uzbekiston temir jullari" and other railways C.I.S. Degree of embed and economic effectivity: designed technology : a) it is introduced in RWT-14 of The Railway Company "Uzbekiston temir jullari"; b) it is approved for using on railways of the Russia and C.I.S.. This is executed in the manner of "Technical instructions. The cross-pieces melted automatic polyclcctrodcs by way under gumboil in stationary condition". The economic effect from introduction designed technologies forms (on one crosspiece ): for cross-pieces R50 - 2666,68 c.u.; for cross-pieces R65 - 3061,51 c.u. Field of application: enterprises of The Railway Company "Uzbekiston temir jullari", Russia and the other countries of C.I.S., concerning with recovering the cross-pieces arrowshaped translation; scientifically- exploratory organizations of the different branches public facilities.