Method for determining cooling condition of material to be cooled, method for manufacturing metal material, and method for manufacturing hot-rolled steel sheet
The method for determining cooling conditions using a composite heat transfer coefficient (1-Pc)·αn(T)+Pc·αf(T) addresses the challenge of flexible cooling adjustments in film and nucleate boiling regions, enhancing cooling accuracy and reducing material deformation in hot-rolled steel sheet production.
JP2026011907APending Publication Date: 2026-01-23NIPPON STEEL CORPORATION
Patent Information
- Application Number
- JP2024112891
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2026-01-23
Smart Images
Figure 2026011907000001_ABST
Abstract
To provide a method for determining a cooling condition of a material to be cooled capable of separately adjusting cooling of a film boiling region and cooling of a nucleate boiling region while coping with a rapid change of a heat transfer coefficient in a transition boiling region, and improving flexibility.SOLUTION: A n (T) represents a heat-transfer coefficient α (W / (m2K)) when the surface temperature T (°C) of the cooled material is in a nucleate boiling region; The heat-transfer coefficient α is expressed by an equation including (1-Pc)·α n (T) + Pc·α f (T), where α f (T) represents the heat-transfer coefficient α when the surface temperature T is in the film boiling region, and Pc represents the heat-transfer coefficient α that approaches 0 as the surface temperature T decreases and approaches 1 as the surface temperature T increases at least when the surface temperature T is in the transition boiling region.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art
Citation Information
Patent Citations
Cooling method for hot rolled steel plate
JP1990197312A
Method for predicting temperature of and cooling metal sheet in hot rolling
JP2004331992A