Кафедра ливарного виробництва чорних та кольорових металів

Національний технічний університет України "КПІ ім. Ігоря Сікорського"

Українська (UA)Русский (RU)English (UK)Deutsch (DE)
FacebookTwitter

Не считать себя непогрешимым.


Знайшли помилку в тексті? Виділіть текст, натисніть Shift+Enter і відправте нам повідомлення.

Yamshinskij M., Fedorov G., Verkhovliuk A. The development of new casting alloys intended for operation under extreme conditions and some techniques of making castings from them

Yamshinskij M., Fedorov G., Verkhovliuk A. The development of new casting alloys intended for operation under extreme conditions and some techniques of making castings from them

The article studies new heat-resistant and wear resistant materials for operation under extreme conditions, especially in the power industry. The methods that improve the quality of a metal in metal castings through the influence of alloying elements on its structure and properties have been considered. These methods are very effective for reducing the tendency of a metal to form a coarse–grained structure. The paper describes optimal techniques for melting special alloys in induction and electric furnaces. A set of rules for the selection of a melting temperature before pouring a metal into the casting forms depending on the dimensions, wall thickness, the geometry of castings have been determined. The behavior of new alloys under the conditions of high temperatures, aggressive environments has been studied.

It has been established that heat–resistant Cr–Al steels exhibit high heat resistance and wear resistance properties, they 6–8 times surpass Cr–Ni steels in oxidation resistance. The proposed Cr–Mn cast iron processed in an integrated manner with REM (rare earth metals) and Ti is superior to a basic cast iron in conditions of a heavy wear.Numerous industrial trials confirm the usefulness of recommended new casting materials for use under extreme conditions.

Keywords: heat–resistant steel, Cr–Al steel, heat resistance, aggressive environment, wear–resistant cast iron, ash–handling pump; an ash pump

 

03056, м. Київ - 56, вул. Політехнічна 35, корпус 9, поверх 4. Тел.: +38(044)204-82-16. Кафедра ЛВЧКМ КПІ ім. Ігоря Сікорського, 2010-2019©