This work introduces the invention of an alternative camshaft manufacturing method aimed at improving the efficiency of the process and providing a more flexible product. The innovation consists in the laser metal deposition (LMD) of a profile on the shaft in order to realize a coupling stretch where the cam is fixed by interference. Alternative profile materials (1.4404 steel and Inconel 625 alloy) are deposited on a 1.0421 steel tube at different laser power levels and powder flow rate. The effect of the process parameters on the deposited profile is investigated initially through the evaluation of indirect quality attributes, such as deposit dimensions, hardness values, and microstructure. Then, the coupling force resulting from the press-fit test is evaluated. Finally, the best configuration of this new assembled camshaft is tested with a torsion test rig. Performances of the new assembled camshaft are compared with those of traditional products, leading to the validation of this innovative solution. The preliminary feasibility of the LMD application to the production of an assembled camshaft is demonstrated.

Application of Laser Metal Deposition for a New Model of Assembled Camshaft

Montani, Marco;Previtali, Barbara
2019-01-01

Abstract

This work introduces the invention of an alternative camshaft manufacturing method aimed at improving the efficiency of the process and providing a more flexible product. The innovation consists in the laser metal deposition (LMD) of a profile on the shaft in order to realize a coupling stretch where the cam is fixed by interference. Alternative profile materials (1.4404 steel and Inconel 625 alloy) are deposited on a 1.0421 steel tube at different laser power levels and powder flow rate. The effect of the process parameters on the deposited profile is investigated initially through the evaluation of indirect quality attributes, such as deposit dimensions, hardness values, and microstructure. Then, the coupling force resulting from the press-fit test is evaluated. Finally, the best configuration of this new assembled camshaft is tested with a torsion test rig. Performances of the new assembled camshaft are compared with those of traditional products, leading to the validation of this innovative solution. The preliminary feasibility of the LMD application to the production of an assembled camshaft is demonstrated.
additive manufacturing, cladding, dilution, hardness, laser metal deposition (LMD), testing
File in questo prodotto:
File Dimensione Formato  
Application of Laser Metal Deposition for a New Model of Assembled Camshaft.pdf

Accesso riservato

: Publisher’s version
Dimensione 2.74 MB
Formato Adobe PDF
2.74 MB Adobe PDF   Visualizza/Apri
Application of Laser Metal Deposition for a New Model of Assembled Camshaft.pdf

Open Access dal 12/12/2020

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 1.48 MB
Formato Adobe PDF
1.48 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1124864
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 10
social impact