Research on the structure of metal parts manufactured by the innovative procedure of combined processing operations
Journal Title: Proceedings in Manufacturing Systems - Year 2017, Vol 12, Issue 3
Abstract
The analysis of the structure of metal parts made by the innovative technological procedure of combined processing operations requires the investigation of parts by electronic and optical microscopy and micro-hardness determinations. In most investigations, the structural analysis reveals a homogeneous, finished, predominantly martensitic structure with micro-alloying elements finely dispersed in the form of complex carbides. The agglomerations of chemical elements such as Si, Mn and C in the form of strips and strings are rare and they are completely missing in the form of mesh. The optimization measures aim to reduce and eliminate the agglomerations because these ones create inhomogeneities that lead to variations of the properties during utilization conditions. Optimization deals especially with the values of the main technological parameters for the technological phase of liquid form micro-alloying and for the technological phase of induction heat treatment. The optimization measures that are required and the conclusions that are drawn support the viability of the innovative technological procedure of combined heat treatment.
Authors and Affiliations
Anisoara Corabieru, Stefan Velicu, Petrica Corabieru, Dan Dragos Vasilescu, Ionel Paunescu
Keywords
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