US2022112571A1PendingUtilityA1

Method of producing steel material, apparatus that cools steel material, and steel material

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Assignee: JFE STEEL CORPPriority: May 14, 2015Filed: Dec 15, 2021Published: Apr 14, 2022
Est. expiryMay 14, 2035(~8.8 yrs left)· nominal 20-yr term from priority
Inventors:Kenji OkushiroHiroyuki FukudaHideo KijimaYoshikazu YoshidaHiroshi IshikawaSadanori Nakano
C22C 38/06B21B 1/085C22C 38/002C22C 38/02C22C 38/14B21B 2045/0221B21B 45/0203C22C 38/60C22C 38/04B21B 2045/0212C21D 9/04C21D 1/00C22C 38/00
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Claims

Abstract

A method of producing a steel material, wherein when a cooling apparatus having a plurality of cooling sections disposed side by side in a longitudinal direction of a steel material cools the steel material hot worked or cooled/reheated, the steel material is conveyed at a conveyance distance L o (m) satisfying Equation (1), in one direction along with the longitudinal direction of the steel material, in the cooling apparatus, wherein L o is defined as conveyance distance (m) of steel material, m is a natural number, and L h is defined as length (m) of cooling sections in longitudinal direction of steel material: ( m −0.20)× L h ≤L o ( m +0.20)× L h   (1).

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method of producing a steel material, wherein
 when a cooling apparatus having a plurality of cooling sections disposed side by side in a longitudinal direction of a steel material cools the steel material hot worked or cooled/reheated,   the steel material is conveyed at a conveyance distance L o  (m) satisfying Equation (1), in one direction along with the longitudinal direction of the steel material, in the cooling apparatus, wherein L o  is defined as conveyance distance (m) of steel material, m is a natural number, and L h  is defined as length (m) of cooling sections in longitudinal direction of steel material:
   ( m− 0.20)× L   h   ≤L   o ≤( m+ 0.20)× L   h   (1).
 
   
     
     
         2 . The method according to  claim 1 , wherein, in conveyance of the steel material, the steel material is conveyed while being oscillated in both directions of one direction and other direction along with the longitudinal direction of the steel material, and the amplitude of the oscillation is set to the conveyance distance L o  satisfying Equation (1). 
     
     
         3 . The method according to  claim 1 , wherein the steel material is a rail material. 
     
     
         4 . The method according to  claim 2 , wherein the steel material is a rail material.

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