Rail having high resistance to wear in its head and high resista

Details Rail having high resistance to wear in its head and high resista Rail having high resistance to wear in its head and high resista

1984-10-01

1986-03-11

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148 124, 148144, 148148, 148 39, C21D 904, C21D 118

Patent

active

045753970

ABSTRACT:
The invention relates to a rail having high resistance to wear in its head and high resistance to rupture in its foot. It is the characteristic feature of the invention that after rolling followed by heat treatment the rail has a fine pearlitic structure in the head and a martensitic annealed grain structure in the foot. The invention also includes preferred methods of heat treatment for the rail.

REFERENCES:
patent: 1285749 (1918-11-01), Lewis
patent: 1418985 (1922-06-01), Stock
patent: 1828325 (1931-10-01), Kurz
patent: 2793947 (1957-05-01), Swanson
patent: 3726724 (1973-04-01), Davies et al.
patent: 4082577 (1978-04-01), Heller
patent: 4486248 (1984-12-01), Ackert et al.
Metals Abstracts, vol. 11, 1978, No. 31-3275, "Some Features and Metallurgical Considerations of Surface Defects in Rail due to Contact Fatigue," p. 2169.

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