Technological Support of Machine Element Corrosion Resistance

Abstract

The operational properties of machine parts can be provided by two-stage and single-stage approaches. The single-stage approach is currently the most relevant way to ensure the operational properties of machine parts. To implement a single-stage approach, it is necessary to establish the interrelation between the operational property and the machining modes and conditions. On the basis of the studies conducted, theoretical dependences are proposed for determining the corrosion rate depending on the modes and conditions for various methods of machining parts. These theoretical dependences allow to define optimal cutting modes and machining conditions to ensure the required corrosion rate for various methods of machining parts. The obtained theoretical dependences help us to conclude that the corrosion rate during edge cutting machining is mostly influenced by the feed, cutting amount and speed, cutting tool geometry, and when grinding, the most influential are average value of the rounding radius of the abrasive grain points, heating temperature of the surface layer and the physical and mechanical properties of the machined material, during finishing and strengthening machining—the feed, operating force, radius and profile radius of the tool, tool roughness, during EDM machining—technological stress, current strength and pulse duration.