Method for influencing the internal stress state of solid railro

Details Method for influencing the internal stress state of solid railro Method for influencing the internal stress state of solid railro

1988-08-03

1990-01-16

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148134, C21D 932

Patent

active

048940992

ABSTRACT:
The invention relates to the regeneration of solid rail road wheels, the operating safety of which is impaired by the danger of rupture or buckling, by the action of the block brake, especially after the brake has been acting for a long time by influencing the active internal stress state in the wheel rim, in such a fashion that damaging effects are no longer present in the sense of reduced operating safety. This is achieved by heating the wheel center of the solid railroad wheel. The heating process is such that plastic deformation occurs, especially in the area of maximum internal stress and the internal stresses in the solid wheel can thereby be relieved. The temperature difference required for this, between the heated area of the wheel center and the wheel rim is at least 100 deg C.

REFERENCES:
patent: 1391907 (1921-09-01), Schaffer
patent: 3558367 (1971-01-01), Eck

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