High carbon content and high strength heat-treated steel rail and method for producing the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 13, 2015
Grant Date -
Oct 20, 2011
app pub date -
Nov 23, 2010
filing date -
Apr 16, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A high carbon content and high strength heat-treated steel rail including by weight 0.80-1.20% carbon, 0.20-1.20% silicon, 0.20-1.60% manganese, 0.15-1.20% chromium, 0.01-0.20% vanadium, 0.002-0.050% titanium, less than or equal to 0.030% phosphorus, less than or equal to 0.030% sulfur, less than or equal to 0.010% aluminum, less than or equal to 0.0100% nitrogen, and iron. The steel rail has excellent wear resistance and plasticity and can satisfy the requirement for overloading. A method for producing the steal rail by heating a slab to a heating temperature, multi-pass rolling, and accelerated cooling, wherein a maximum heating temperature (° C.) of said slab is equal to 1,400 minus 100[% C], [% C] representing the carbon content (wt. %) of said slab multiplied by 100.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2010 Application Filing Year
- C21D Class
- 224 Applications Filed
- 169 Patents Issued To-Date
- 75.45 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- C21D Class
- 31.67 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 13, 2027 |
