The dimensional and geometrical characteristics of Charpy bars produced with two different steels were investigated to evaluate the effect of increasing the sintering temperature from 1120 °C (conventional sintering temperature) up to 1350 °C. The problem was approached from the Geometric Dimensioning and Tolerancing (GD&T) point of view, referring to the standard ASME Y14.5 (2009). The dimensional and geometrical characteristics were evaluated using a Coordinate Measuring Machine (CMM), measuring the surfaces by scanning mode. The work highlights that the increase in the sintering temperature, aimed at improving the mechanical properties, does not prevent the main benefit of this technology, i.e., the possibility of producing parts with good dimensional and geometrical precision. Moreover, a methodology establishing the measurement procedures and data processing, to be used in future work for the characterisation of more complex shapes, was defined.
|Titolo:||Influence of sintering temperature on the shrinkage and geometrical characteristics of steel parts produced by Powder Metallurgy|
|Autori:||Cristofolini, Ilaria; A., Rao; Menapace, Cinzia; Molinari, Alberto|
|Titolo del periodico:||JOURNAL OF MATERIALS PROCESSING TECHNOLOGY|
|Anno di pubblicazione:||2010|
|Appare nelle tipologie:||03.1 Articolo su rivista (Journal article)|