Modern structural and operating materials in development of road-building machines

Abstract

BACKGROUND: The analysis of modern state of using structural and operating materials in development of road building machines is given in the article.

AIMS: To highlight the most important tendencies in obtaining modern structural and operating materials in development of road building machines.

METHODS: The study subject is modern structural and operating materials in development of road building machines. The novelty of the study lies in highlighting main modern tendencies of modification and technological features of modern structural and operating materials for road building machines with enhanced mechanical strength characteristics. The materials of the study include main scientific and practical information on ways of using structural and operating materials in development of road building machines. The study methods include classification and integration of the information on the topic of modern structural and operating materials in development of road building machines.

RESULTS: It is found that the key difference between steel types for structural and operating materials as a part of development of units, mechanisms and parts of road building machines is parameters of corrosion resistance, which is defined by qualitative and quantitative chemical composition directly. Among the main issues of modern industry development, improvement of cost-performance ratio of road building machines, their mechanisms and engineering parts by means of reducing specific metal content and increasing operational reliability and durability is outlined.

CONCLUSIONS: It is shown that, opposed to majority of low-alloyed structural steel types, change of austenite in steel types, micro-alloyed with vanadium and niobium and with strength class in the range from S350 to S490, with constant cooing according to the thermal cycle of welding performs mainly in bainitic range. As a result of structural changes, taking place in steel and influenced by thermal cycles of welding, the static strength indicators of the metal in zones of thermal impact of welding joints increase, whereas the indicators of plastic properties reduce. Sufficient reduce of impact viscosity of the metal in zones of thermal impact of welding joints of micro-alloyed structural steel types is observed at w6/5 5°C/s. With increasing of cooling speed, the impact viscosity of the metal in zones of thermal impact rapidly increases and it may achieve the level of the main metal in some steel types.

Keywords

road-building machines / structural and operating materials / creating / choice / optimization / improvement

References

[1] Khmara LA. Scientific support of construction and road machines: research, calculation, creation, selection, use. Vіsnik PDABA. 2015;7–8(209):48–60. (in Russ).

[2] Хмара Л.А. Научное сопровождение строительных и дорожных машин: исследование, расчет, создание, выбор, использование // Вісник ПДАБА. 2015. № 7–8(209). С. 48–60.

[3] Khmara LA. The use of potential energy batteries in construction machines (on the example of a single-bucket excavator). In: Construction. Materials Science. Engineering: sci. coll. Dnepropetrovsk: PGASA; 2005;33:17–33. (in Russ).

[4] Хмара Л.А. Применение аккумуляторов потенциальной энергии в строительных машинах (на примере одноковшового экскаватора) // Строительство. Материаловедение. Машиностроение: сб. на-уч. тр. Днепропетровск: ПГАСА, 2005. Вып. 33. С. 17–33.

[5] Glagoleva SV, Shornikova TP. Modern road construction equipment and its maintenance. Vestnik nauki. 2020;9(30):66–74. (in Russ).

[6] Глаголева С.В., Шорникова Т.П. Современная дорожно-строительная техника и ее техническое обслуживание // Вестник науки. 2020. № 9(30). С. 66–74.

[7] Khmara LA. Scientific support of construction and road machines: research, calculation, creation, selection, use. Vіsnik PDABA. 2010;7(148):53–63. (in Russ).

[8] Хмара Л.А. Научное сопровождение строительных и дорожных машин: исследование, расчет, создание, выбор, использование // Вісник ПДАБА. 2010. № 7(148). С. 53–63.

[9] Vavilov AV. On the need to create a system of technological machines of the construction complex. Nauka i tekhnika. 2014;5:82–85. (in Russ).

[10] Вавилов А.В. О необходимости создания системы технологических машин строительного комплекса // Наука и техника. 2014. № 5. С. 82–85.

[11] Sokolov IA. Substantiation of the effectiveness of the use of multi-purpose construction machines in the production of earthworks. Vіsnik PDABA. 2015;11(212):61–66. (in Russ).

[12] Соколов И.А. Обоснование эффективности использования многоцелевых строительных машин при производстве земляных работ // Вісник ПДАБА. 2015. № 11(212). С. 61–66.

[13] Beletsky BF, Bulgakova IG. Construction machines and equipment. Saint Petersburg: Lan’; 2012. (in Russ).

[14] Белецкий Б.Ф., Булгакова И.Г. Строительные машины и оборудование. Санкт-Петербург: Лань, 2012.

[15] Ragu Nathan S, Balasubramanian V, Malarvizhi S, et al. Effect of welding processes on mechanical and microstructural characteristics of high strength low alloy naval grade steel joints. Def. Tech. 2015;11:308–317.

[16] Ragu Nathan S., Balasubramanian V., Malarvizhi S., et al. Effect of welding processes on mechanical and microstructural characteristics of high strength low alloy naval grade steel joints // Defence Technology. 2015. № 11. Р. 308–317.

[17] Show BK, Veerababu R, Balamuralikrishnan R, et al. Effect of vanadium and titanium modification on the microstructure and mechanical properties of microalloyed HSLA steel. Mater. Sci. Eng. A. 2010;527:1595–1604. doi: 10.1016/j.dt.2015.06.001

[18] Show B.K., Veerababu R., Balamuralikrishnan R., et al. Effect of vanadium and titanium modification on the microstructure and mechanical properties of microalloyed HSLA steel // Mater. Sci. Eng. A. 2010. № 527. Р. 1595–1604. doi: 10.1016/j.dt.2015.06.001

[19] Grigorenko GM, Kostin VA, Orlovsky VYu. Modern Possibilities of Modeling Austenite Transformations in Welds of Low-Alloy Steels. Avtomaticheskaya svarka. 2008;3:31–34. (in Russ).

[20] Григоренко Г.М., Костин В.А., Орловский В.Ю. Современные возможности моделирования превращений аустенита в сварных швах низколегированных сталей // Автоматическая сварка. 2008. № 3. 31–34.

[21] Sarzhevsky VA, Sazonov VYa. Installation for simulation of thermal cycles of welding based on MCP75 machine. Avtomaticheskaya svarka. 1981;5:69–70. (in Russ).

[22] Саржевский В.А., Сазонов В.Я. Установка для имитации термических циклов сварки на базе машины МСР75 // Автоматическая сварка. 1981. № 5. С. 69–70.

RIGHTS & PERMISSIONS

Eco-Vector