US 12,281,370 B2
Method for fixing a rail of a rail track with thermal conditioning of a rail portion, and associated rail machine
Marc-Antoine Savoyat, Renens (CH)
Assigned to MATISA MATERIEL INDUSTRIEL S.A., Crissier (CH)
Appl. No. 17/282,677
Filed by MATISA MATERIEL INDUSTRIEL S.A., Crissier (CH)
PCT Filed Oct. 1, 2019, PCT No. PCT/EP2019/076658
§ 371(c)(1), (2) Date Apr. 2, 2021,
PCT Pub. No. WO2020/070168, PCT Pub. Date Apr. 9, 2020.
Claims priority of application No. 1859128 (FR), filed on Oct. 2, 2018.
Prior Publication US 2021/0348246 A1, Nov. 11, 2021
Int. Cl. C21D 9/04 (2006.01); E01B 29/17 (2006.01); E01B 31/18 (2006.01)
CPC C21D 9/04 (2013.01) [E01B 29/17 (2013.01); E01B 31/18 (2013.01); C21D 2221/00 (2013.01); C21D 2221/10 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of immobilizing a rail of a railway track by means of a rail machine, comprising:
moving the rail machine in a work direction, such that, at each moment, a portion of the rail not fixed to a sleeper of the railway track passes through a thermal conditioning zone of a thermal conditioning device of the rail machine;
a temperature of a surface region of the portion of the rail passing through the thermal conditioning zone is changed by means of the thermal conditioning device, by generating a non-homogenous temperature distribution in the portion of the rail;
wherein the portion of the rail is fixed on a sleeper of the railway track after the temperature of the surface region of the portion of the rail has been changed, but without waiting for the temperature distribution in the portion of the rail to be homogenized.