Effect of Spot Continual Induction Hardening on the Tribological Performance of Grey Cast Iron with Curved Surface

2017 ◽  
Vol 61 (1) ◽  
pp. 185-193 ◽  
Author(s):  
Xunpeng Qin ◽  
Kai Gao ◽  
Zhou Wang ◽  
Xuliang Chen
2021 ◽  
Vol 69 (2) ◽  
Author(s):  
Ulf Olofsson ◽  
Yezhe Lyu ◽  
Anna Hedlund Åström ◽  
Jens Wahlström ◽  
Senad Dizdar ◽  
...  

AbstractIn this study, grey cast iron disc brake rotors are refurbished by adding a surface layer through laser cladding. Current methods to deal with replaced rotors mainly include remelting, with a minority fraction disposed in landfill. Both approaches result in a huge waste of resources and an increase in CO2 footprint. From a sustainable point of view, this study aims to evaluate the feasibility of refurbishing brake rotors by a combined environmental and tribological performance approach. A streamlined life cycle assessment is conducted to compare the environmental impacts between producing virgin grey cast iron brake rotors and refurbishing replaced brake rotors by laser cladding. It turns out that the energy consumption and CO2 footprint of the laser cladding refurbished brake rotors are 80% and 90% less than the virgin brake rotors. The results show that the refurbished brake rotor yields higher friction compared to the original cast iron utilizing the same pad material. The wear and particle emissions of the disc brake contact are in this study higher for the laser-cladded one compared to the original cast iron one.


2021 ◽  
Author(s):  
Ulf Olofsson ◽  
Yezhe Lyu ◽  
Anna Hedlund Åström ◽  
Jens Wahlström ◽  
Dizdar Senad ◽  
...  

Abstract In this study, grey cast iron disc brake rotors are refurbished by adding a surface layer through laser cladding. Current methods to deal with replaced rotors mainly include re-melting, with a minority fraction disposed in landfill. Both approaches result in a huge waste of resources and an increase in CO 2 footprint. From a sustainable point of view, this study aims to evaluate the feasibility of refurbishing brake rotors by a combined environmental and tribological performance approach. A streamlined life cycle assessment is conducted to compare the environmental impacts between producing virgin grey cast iron brake rotors and refurbishing replaced brake rotors by laser cladding. It turns out that the energy consumption and CO 2 footprint of the laser cladding refurbished brake rotors are 80% and 90% less than the virgin brake rotors. The results show that the refurbished brake rotor yields higher friction compared to the original cast iron utilizing the same pad material. The wear and particle emissions of the disc brake contact are in this study higher for the laser cladded one compared to the original cast iron one.


2017 ◽  
Vol 786 ◽  
pp. 012013
Author(s):  
E L Castellanos-Leal ◽  
D A Miranda ◽  
A E Coy ◽  
J G Barrero ◽  
J A González ◽  
...  

1981 ◽  
Vol 42 (C5) ◽  
pp. C5-929-C5-934 ◽  
Author(s):  
P. Millet ◽  
R. Schaller ◽  
W. Benoit

Author(s):  
O Yu Usanova ◽  
L A Maryushin ◽  
A Yu Kazantsev ◽  
A I Dyukova

Sign in / Sign up

Export Citation Format

Share Document