Perm, Perm, Russian Federation
Perm, Perm, Russian Federation
Perm, Perm, Russian Federation
BBK 345 Общая технология машиностроения. Обработка металлов
The study results of grinding the surfaces of gas turbine engine repair parts made of heat-resistant stainless steel EP-517SH with sprayed high-strength wear-resistant VKNA and VK-20KS coatings are considered in order to select the most effective abrasive tools. The effectiveness was evaluated based on the results of comparative studies of the quality parameters of the surface layer: roughness, cracking, tempering, peeling of the coating, pore formation, as well as the machining temperature when using grinding wheels made of fused alumina impregnated with molybdenum disulfide and without impregnation, made of green silicon carbide and el'bor borazon material. As a result of the study, it is found that the best quality of machining parts coated with VKNA and VK-20KS is achieved by using el'bor borazon circles.
grinding, coating, fused alumina, silicon carbide, el'bor borazon
1. Chernoivanov VI, Lyalyakin VP. Organization and technology of restoring machine parts. 2nd ed. Moscow: GosNITI; 2003.
2. Kashcheev VN. Processes in the zone of friction contact of metals. Moscow: Mashinostroenie; 1978.
3. Suresh Babu P. The influence of erodent hardness on the erosion behavior of detonation sprayed WC-12Co coatings. Wear. 2011;270(11-12):903-913. doihttps://doi.org/10.1016/j.wear.2011.02.019
4. Makarov VF, Yurova GP. Grinding of wear-resistant coatings. Collection of Reports of the International Scientific and Technical Conference, Sept 12-14, 2005: Shlifabraziv-2005; Volzhsky; 2005. p. 5-7.
5. Kolachev BA, Elagin VI, Livanov VA. Physical metallurgy and heat treatment of non-ferrous metals and alloys: textbook. Moscow: MISIS; 1999.
6. Alekseev NS. Efficiency of grinding of microporous coatings with the use of coolant. Obrabotka Metallov. 2015;2(67):6-16.
7. Kiselev ES. Thermophysics of straightening grinding wheels with the use of coolant. Ulyanovsk: Publishing house of UlSTU; 2001.
8. Zolotarevsky VS. Mechanical properties of metals. Moscow: MISIS; 1998.
9. Kremen ZI. Highly efficient grinding of wear resistant coatings with CBN wheels. Industrial Diamond Review. 2007;67:44-48.
10. Khudobin LV, Unyanin AN. Minimization of grinding wheels salting. Ulyanovsk: Publishing house of UlSTU; 2007.
