Method for producing H-shaped steel
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United States of America Patent
Stats
-
Jul 14, 2020
Grant Date -
Mar 21, 2019
app pub date -
Mar 10, 2016
filing date -
Mar 19, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a method for producing H-shaped steel using a slab or the like having a rectangular cross-section as a material, for example. Provided is a method for producing H-shaped steel, the method including: a rough rolling step; an intermediate rolling step; and a finish rolling step. A slab material whose ratio of slab width to slab thickness is equal to or more than 6.0 and equal to or less than 7.7 is used as a material to be rolled. In a rolling mill a plurality of calibers having projections may be provided to shape the material to be rolled. The projections may have a height of 100 mm or more, and the tip of the projections may have an angle of equal to or more than 25° and equal to or less than 40°.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- B21B Class
- 211 Applications Filed
- 138 Patents Issued To-Date
- 65.41 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B21B Class
- 0 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 14, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 14, 2032 |
