The recovery through welding of the geometric shape on passenger railcars friction liner

Abstract

Friction liner (FL) is a component of the brake carriage equipment for passenger railcars, included in risk class 1A, according to OMT 290/2000, with a normal service life of minimum 10 years (this does not take into account possible accidents or damage caused by the failure of other elements). According to the documentation, the friction linings (FL)s are checked every six months, and if any malfunctions that may endanger the proper functioning are found, the friction linings (FL)s are subjected to repair by replacing with new spare parts from the manufacturer, from import, which entails significant costs, either by technological operations of repair / reconditioning for reuse under maximum safety conditions. This paper presents a series of qualitative and quantitative results, by means of tables / graphs, obtained as a result of applying the technology of recovering the geometric shape (after wear in operation) using the Shielded Metal Arc Welding process (SMAW) [1], as a way of avoiding imports.

Keywords

• welding reconditioning
• railways industry
• friction liner
• deformations