Application of a pressurized internal cooling method in grinding inconel 718: Modeling-simulation and testing-validation. (1st January 2021)

• Record Type: Journal Article
• Authors: Peng, Ruitao; Tong, Jiawei; Tang, Xinzi; Huang, Xiaofang; Liu, Kaifa
• Is Part Of: International journal of mechanical sciences. Volume 189(2021)
• Publication Date: 2021-01-01
• Subjects: Grinding wheel -- Pressurized internal cooling -- Super-alloy -- Heat transfer; Mechanical engineering -- Periodicals; Génie mécanique -- Périodiques; Mechanical engineering; Maschinenbau; Mechanik; Zeitschrift; Periodicals; 621.05
• DOI: 10.1016/j.ijmecsci.2020.105985
• Languages: English
• ISSNs: 0020-7403

Abstract

Highlights: An internal-cooling grinding wheel with a detachable abrasive ring was designed. The CFD method was used to analyze the flow field in internal channel. The thermal field and flow field in the grinding zone were analyzed. The grinding wheel designed herein was prepared and tested. The experimental verification of grinding performance was carried out. Abstract: Super-alloys are prone to generate intense heat during processing. Moreover, conventional grinding wheels and cooling techniques have to break through the air barrier by increasing the cooling power, which affects cooling efficiency. In this paper, a pressurized internal cooling grinding wheel with a dismountable abrasive ring was proposed to improve these deficiencies. The computational fluid dynamics (CFD) method has been used to analyze the flow field in the curved-channel, as well as the thermal field and flow field in the grinding zone. Further, the grinding wheel has been prepared and tested. Simulation and experimental results showed that the curved- channel increases the jetting speed and uniformity, and reinforces the flushing function. In addition, compared with the linear-channel, the experimental temperature of curved-channel was reduced by a maximum of 61.50 °C, and the roughness was decreased by 25.29%, showing prominent machining and cooling performance. Graphical abstract: Pressurized internal cooling grinding wheel breaks the restriction of air barriers. Simulations of flow and thermal field were carried out. Further, it tested and applied in grinding experiments. Image, graphical abstract