"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Designing and continuous extrusion forming of Al-Mg-Si contact lines for electric railway

I. N. POPESCU1, V. BRATU1,* , M. ROSSO2, C. POPESCU3, E. V. STOIAN1

Affiliation

  1. Faculty of Materials and Mechanical Engineering,18-24 Unirii Bld., 130082, Valahia University of Targoviste, Romania
  2. Politecnico di Torino, Department of Applied Science and Technology, C.so Duca degli Abruzzi24, 10129 Torino, Italy
  3. Vimetco Extrusion Company,1 Milcov Street, Slatina, Romania

Abstract

The experimental work aimed to obtaining the aluminum alloy contact lines for trams or light rail. For this purpose was elaborated AlMgSi0.5 Aluminum alloy was elaborated and semi-continuous casted into rods of φ 175 x 6000 mm, and then homogenized (520° C / for 16 hours) for the continuous extrusion process. A chamber extrusion die was designed and executed. After continuous extrusion forming, the obtained contact wire has been heat treated (quenching and artificial aging at 155 °C for 14 hours, air cooling). The product was microstructurally analyzed and mechanically tested (Tensile strength, Rm, Elongation, A, Brinell Hardness , HB and tensile forces in the contact wire, F. Results have shown that, although the minimum tensile strength is less than 200 MPa (Rm = 163-248 MPa), the value of total tensile forces F = 4250-6450 kilogram-force (kgf) in AlMgSi0.5 contact wire is superior to the copper wire, (F=3500Kgf according with PN-64/E-90090 standardization and Romanian standard STAS 686-71)..

Keywords

The continuous extrusion forming, Designing of extrusion die, Al alloy contact line, Electric railway.

Submitted at: March 25, 2013
Accepted at: July 11, 2013

Citation

I. N. POPESCU, V. BRATU, M. ROSSO, C. POPESCU, E. V. STOIAN, Designing and continuous extrusion forming of Al-Mg-Si contact lines for electric railway, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 7-8, pp. 712-717 (2013)