Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Study of air quenching influence on valve seat insert obtained with AISI M2 high-speed steel
Submission Author:
Maurilio Pereira Gomes , SP
Co-Authors:
Igor Passos dos Santos, Camila Couto, Luis Augusto Mendes dos Reis, Cristiano Stefano Mucsi, Jesualdo Luiz Rossi, Marco Antonio Colosio, Maurilio Pereira Gomes
Presenter: Maurilio Pereira Gomes
doi://10.26678/ABCM.COBEM2017.COB17-0323
Abstract
This work aimed to heat treat sintered valve seat insert (VSI) in a fashion of improving the mechanical and physical properties of such component. The studied VSI was obtained from a powder mixture of AISI M2 high-speed steel, iron, manganese sulphide, niobium carbide, graphite, zinc stearate and copper. Such powders characterization consisted of determining its particle size distribution and morphological aspects. The VSI was air quenched and double tempered at seven equidistant temperatures, from 100 °C until 700 °C.A thermocouple type k attached to a data acquisition system was used to measure the temperature variation along the heat treatment. The mechanical and physical properties were analyzed by the VSI apparent density, apparent hardness and crush radial strength. The component’s chemical composition was determined through gas analysis method and energy dispersive spectroscopy (EDS). The air quenching and double tempering at 600 °C provided the VSI best property according to the automakers’ hardness requirements.
Keywords
powder metallurgy, AISI M2 high-speed steel, valve seat insert, Heat treatment
