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|Type:||Artigo de periódico|
|Title:||Evaluating The Quality Of Turned Hardened Steel Workpieces|
|Abstract:||Recently many works have been done in order to study the turning process of hardened steels, mainly concerning the lives of ceramic and PCBN tools. However, just few works deal with the problem of turning accuracy, comparing it with grinding accuracy, mainly when the lathe used has a conventional mechanical design. Therefore, it is important to evaluate the capability of these conventional machines to replace the grinding operation by turning and still maintain workpiece quality typical of grinding operations. This work tries to contribute to fill this gap. Several AISI E52100 hardened steel workpieces (60 HRc) were turned using mixed ceramic and PCBN tool materials and different cutting speeds in a lathe of conventional design. Workpiece surface roughness and diameter variation were measured throughout the tool life test, in order to evaluate the quality of the workpiece. The length of the workpieces was also varied to analyze the influence of workpiece shape on its quality. The main conclusion of this work was that the turning process is able to replace grinding in hardened steel finishing operations. Moreover, it is able to achieve a surface and dimensional quality similar to that of ground components, even when the machine used has a conventional mechanical design.|
|Editor:||Braz Soc Mech Sci, Rio de Janeiro, Brazil|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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