THE FACTORS INFLUENCING QUALITY OF STRUCTURE OF WORKPIECES PROCESSED ON THE VACUUM LINE «MODULTHERM 7/1»

Results of metallographical observations of structural constituent of carburized cases and a core of gears after thermochemical treatment on a vacuum line «ModulTherm 7/1» made by corporation «ALD Vacuum Technologies GmbH» are given. It was established that the cause of formation of non martensitic transformations of austenite in carburized cases and in a core of workpieces is insufficient cooling capacity of the hardening module of a vacuum line «ModulTherm 7/1»

Smart CloudBench - automated performance benchmarking of the cloud

As the rate of cloud computing adoption grows, so does the need for consumption assistance. Enterprises that are looking to migrate their IT systems to the cloud, would like to quickly identify providers that offer resources with the most appropriate pricing and performance levels to match their specific business needs. However, no two vendors offer the same resource configurations, pricing and provisioning models, making the task of selecting appropriate computing resources complex, time-consuming and expensive. In this paper, we present Smart CloudBench - a platform that automates the performance benchmarking of cloud infrastructure, helping potential consumers quickly identify the cloud providers that can deliver the most appropriate price/performance levels to meet their specific requirements. Users can estimate the actual performance of the different cloud platforms by testing representative benchmark applications under representative load conditions. Experimentation using the prototype implementation shows that higher price does not necessarily translate to better or more consistent performance, and benchmarking results can provide more information to help enterprises make better informed decisions

INFLUENCE OF THE THERMAL PROCESS STAGE ON THE SIZE OF VALID GRAIN OF CONSTRUCTIONAL CARBURIZED STEEL GRADE 20CHN3A

Results of studies of the kinetics of changes in actual grains during technological process at different stages of the manufacture of parts with the use of a universal metallographic etchant to identify borders of valid grains in rolling and stamping in carburizing layers and core parts made of alloy structure steel grades are presented

STRUCTURAL FEATURES OF ECONOMICALLY-ALLOYED STEEL 20HGNMB AFTER CHEMICAL AND THERMAL HARDENING

It is established that structural characteristics of the parts produced of industrial steel melting correspond to the requirements rendered to quality of the cemented layer and core of high-intense gear wheels according to the results of spectral, metallographic, X-ray structural and durometric analyses