machining

Influence of Technological Factors and Cutting Tool Geometry on the Machinability of Chrome-Nickel Steels and Alloys

Statement of the problem and purpose of the work. The technology of machining hard-to-machine materials, which undoubtedly include high-alloy steels and chromium and nickel-based alloys, has some advantages over traditional abrasive machining methods. Among the most significant advantages, researchers note greater flexibility, faster changeover to other types of parts, the ability to combine several operations into one due to the versatility of the forming motion of the blade tool compared to the abrasive, higher productivity, and relatively low technological cost.

The Limit of Endurance, as the Main Indicator of Operational Properties Details of Devices

This article presents an analysis of scientific research in the field of engineering support given values of detail’s endurance limit. Direct correlation between the modes of mechanical cutting, the quality of the surface layer and the endurance limit details were established. The urgency of creating science-based methods use the best mode of machining to ensure the required values of the detail’s endurance limit is shown. It has been developed a mathematical model of endurance limit, which depends on the mode processing and the characteristics of the material.