PEARLITE-BASED RAIL HAVING EXCELLENT WEAR RESISTANCE AND DUCTILITY

Japanese Patent JP2010018844

A

To improve the service life of a rail used for a heavy-load railroad by compositely adding Co and Ni as the components of a rail steel, and controlling an Ni/Co ratio to a fixed range, so as to improve the wear resistance and ductility of a pearlite texture, and controlling the texture and hardness, so as to improve the wear resistance and ductility of a pearlite texture.

The pearlite-based rail having excellent wear resistance and ductility is characterized in that, in a steel rail comprising, by mass, 0.65 to 1.20% C, 0.05 to 2.00% Si, 0.05 to 2.00% Mn, 0.05 to 0.50% Co, 0.10 to 2.25% Ni and the balance Fe with inevitable impurities, the ratio of the Co content to the Ni content (Ni/Co) lies in the range of 2.0 to 4.5, and at least a part of the head surface part of the steel rail has a pearlite texture.

JPH06330233	CORROSION RESISTANT AND WEAR RESISTANT ALLOY FOR MOLTEN ALUMINUM
JPS5872711	DRILL SCREW CONSISTING OF AUSTENITE GROUP STAINLESS STEEL
JPH09279202	METALLIC POWDER FOR INJECTION MOLDING OF METAL AND SINTERED AND CARBURIZED PRODUCT FORMED BY USING THE SAME AND ITS PRODUCTION

UEDA MASAHARU
YAMAMOTO TAKESHI
ONODERA NORIAKI
FURUTA HITOSHI

JP2008180444A

January 28, 2010

July 10, 2008

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NIPPON STEEL CORP

C22C38/00; C22C38/10; C22C38/54; E01B5/02

JP2005163086A	2005-06-23
JP2005256023A	2005-09-22
JP2004204306A	2004-07-22
JP2005290544A	2005-10-20
JP2005171326A	2005-06-30
JP2002030341A	2002-01-31

Mutsumi Yanase
Masaaki Utsunomiya
Atsushi Watanabe

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