Increase of durability of details of soil cultivating agricultural machines using various methods of surfacing

Abstract

It is shown in the article, that the most promising application of the induction welding using powder-like hard allays for the flat parts of agricultural machines with the thickness of the basic and weld metal 2.0 ... 6.0 mm and 0.8 ... 2.0 mm correspondingly is the minimum mixing of the basic metal (BM) and welded metal (WM), the mechanization and automation of the process being possible. The results of investigations of the structure and the properties of the metal being welded by the induction method using the alloy ПГ-С1, when the mechanical vibration is applied while melting (WM), are presented. It is shown, that the application of vibration results in the increase of the WM wear-resistance due to the commination of its structural components. The processes of commination of the WM structure while applying the horizontal vibration is investigated. The mathematical model for finding vibration parameters (amplitude and vibration frequency), depending on the sizes of the structural components, was constructed. Basing of the obtained relations the graphic dependencies of the carbide components of WM on the vibration amplitude and frequency can be constructed to obtain the needed structure of the metal welded layer.