FIELD WELDING APPARATUS FOR HEAD-HARDENED RAILS

摘要

ABSTRACT OF THE DISCLOSURE:A field welding apparatus for head-hardened railscomprises a portable welder for gas pressure welding ofrails, a heater for subjecting the railhead of thepressure welded portion of the rails to subsequent heattreatment, a pair of jigs for setting a heat width ofthe pressure welded portion at the time of the subsequentheat treatment, and an air blowing type cooler for cool-ing the portion which has undergone the subsequent heattreatment.