US2026014617A1PendingUtilityA1
Steel continuous-casting machine and steel continuous-casting method
Est. expiryJun 21, 2042(~15.9 yrs left)· nominal 20-yr term from priority
B22D 11/22B22D 11/1245B22D 11/001B22D 11/1246B22D 11/225B22D 11/124
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Claims
Abstract
A steel continuous-casting machine including: a cooling apparatus that is configured to cool cast steel with water, wherein: the cooling apparatus includes a plurality of cooling-water-discharging nozzles configured to be arranged in a width direction of the cast steel, and the plurality of cooling-water-discharging nozzles are configured to be arranged such that spray discharge surfaces of adjacent cooling-water-discharging nozzles of the plurality of cooling-water-discharging nozzles that are adjacent to each other in the width direction of the cast steel do not overlap.
Claims
exact text as granted — not AI-modified1 . A steel continuous-casting machine comprising:
a cooling apparatus that is configured to cool cast steel with water, wherein:
the cooling apparatus includes a plurality of cooling-water-discharging nozzles configured to be arranged in a width direction of the cast steel, and
the plurality of cooling-water-discharging nozzles are configured to be arranged such that spray discharge surfaces of adjacent cooling-water-discharging nozzles of the plurality of cooling-water-discharging nozzles that are adjacent to each other in the width direction of the cast steel do not overlap.
2 . The steel continuous-casting machine according to claim 1 , wherein:
the spray discharge surfaces of the adjacent cooling-water-discharging nozzles are rectangular or elliptical, and each cooling-water-discharging nozzle of the plurality of cooling-water-discharging nozzles is disposed to satisfy Inequality (1) below:
L
2
>
L
×
sin
θ
1
>
t
1
(
1
)
where L is an arrangement interval (m) of the plurality of cooling-water-discharging nozzles, θ 1 is an angle (°) of a long-side direction or a major-axis direction of a spray discharge surface of the spray discharge surfaces relative to the width direction, and t 1 is a length (m) of a short side or a minor axis of the spray discharge surface of the spray discharge surfaces.
3 . The steel continuous-casting machine according to claim 1 , wherein:
the spray discharge surfaces of the adjacent cooling-water-discharging nozzles are square, and each cooling-water-discharging nozzle of the plurality of cooling-water-discharging nozzles is disposed to satisfy Inequality (2) below:
L
×
sin
θ
2
>
t
(
2
)
where L is an arrangement interval (m) of the plurality of cooling-water-discharging nozzles, θ 2 is an angle (°) of a direction of one side of a spray discharge surface of the spray discharge surfaces relative to the width direction, the one side of the spray discharge surface of the spray discharge surfaces being one side of sides of the spray discharge surface that is closest to an adjacent spray discharge surface of the spray discharge surfaces, and t is a length (m) of the one side.
4 . The steel continuous-casting machine according to claim 1 , wherein:
the spray discharge surfaces of the adjacent cooling-water-discharging nozzles are circular, and each cooling-water-discharging nozzle of the plurality of cooling-water-discharging nozzles is disposed to satisfy Inequality (3) below:
L
>
D
(
3
)
wherein L is an arrangement interval (m) of the plurality of cooling-water-discharging nozzles and D is a diameter (m) of a spray discharge surface of the spray discharge surfaces.
5 . The steel continuous-casting machine according to claim 2 , wherein an aspect ratio of a spray discharge surface of the spray discharge surfaces is 100 or less.
6 . The steel continuous-casting machine according to claim 1 , wherein a surface-layer cooling rate of the cast steel in the cooling apparatus is in a range of 0.3° C./sec or more and 100° C./sec or less.
7 . The steel continuous-casting machine according to claim 1 , further comprising a processor that is configured to control an amount of cooling water discharged from the plurality of cooling-water-discharging nozzles and a transportation speed of the cast steel.
8 . The steel continuous-casting machine according to claim 6 , further comprising a processor that is configured to control an amount of cooling water discharged from the plurality of cooling-water-discharging nozzles and a transportation speed of the cast steel.
9 . A steel continuous-casting method comprising:
cooling cast steel with water, wherein:
the cast steel is cooled by discharging cooling water from a plurality of cooling-water-discharging nozzles arranged in a width direction of the cast steel, and
plurality of cooling-water-discharging nozzles are arranged such that spray discharge surfaces of adjacent cooling-water-discharging nozzles of the plurality of cooling-water-discharging nozzles adjacent to each other in the width direction of the cast steel do not overlap.
10 . The steel continuous-casting method according to claim 9 , wherein:
the spray discharge surfaces of the adjacent cooling-water-discharging nozzles are rectangular or elliptical, and each cooling-water-discharging nozzle of the plurality of cooling-water-discharging nozzles is disposed to satisfy Inequality (1) below:
L
2
>
L
×
sin
θ
1
>
t
1
(
1
)
where L is an arrangement interval (m) of the plurality of cooling-water-discharging nozzles, θ 1 is an angle (°) of a long-side direction or a major-axis direction of a spray discharge surface of the spray discharge surfaces relative to the width direction, and t 1 is a length (m) of a short side or a minor axis of the spray discharge surface of the spray discharge surfaces.
11 . The steel continuous-casting method according to claim 9 , wherein:
the spray discharge surfaces of the adjacent cooling-water-discharging nozzles are square, and each cooling-water-discharging nozzle of the plurality of cooling-water-discharging nozzles is disposed to satisfy Inequality (2) below:
L
×
sin
θ
2
>
t
(
2
)
where L is an arrangement interval (m) of the plurality of cooling-water-discharging nozzles, θ 2 is an angle (°) of a direction of one side of a spray discharge surface of the spray discharge surfaces relative to the width direction, the one side of the spray discharge surface of the spray discharge surfaces being one side of sides of the spray discharge surface that is closest to an adjacent spray discharge surface of the spray discharges surfaces, and t is a length (m) of the one side.
12 . The steel continuous-casting method according to claim 9 , wherein:
the spray discharge surfaces of the adjacent cooling-water-discharging nozzles are circular, and each cooling-water-discharging nozzle of the plurality of cooling-water-discharging nozzles is disposed to satisfy Inequality (3) below:
L
>
D
(
3
)
wherein L is an arrangement interval (m) of the plurality of cooling-water-discharging nozzles and D is a diameter (m) of a spray discharge surface of the spray discharge surfaces.
13 . The steel continuous-casting method according to claim 10 , wherein an aspect ratio of a spray discharge surface of the spray discharge surfaces is 100 or less.
14 . The steel continuous-casting method according to claim 9 , wherein a surface-layer cooling rate of the cast steel is in a range of 0.3° C./sec or more and 100° C./sec or less.
15 . The steel continuous-casting method according to claim 9 , wherein at least one of a surface-layer cooling rate of the cast steel and a temperature drop of the cast steel is controlled by controlling an amount of cooling water discharged from the plurality of cooling-water-discharging nozzles and a transportation speed of the cast steel.
16 . The steel continuous-casting method according to claim 14 , wherein at least one of a surface-layer cooling rate of the cast steel and a temperature drop of the cast steel is controlled by controlling an amount of cooling water discharged from the plurality of cooling-water-discharging nozzles and a transportation speed of the cast steel.
17 . The steel continuous-casting machine according to claim 2 , wherein a surface-layer cooling rate of the cast steel in the cooling apparatus is in a range of 0.3° C./sec or more and 100° C./sec or less.
18 . The steel continuous-casting machine according to claim 2 , further comprising a processor that is configured to control an amount of cooling water discharged from the plurality of cooling-water-discharging nozzles and a transportation speed of the cast steel.
19 . The steel continuous-casting method according to claim 10 , wherein a surface-layer cooling rate of the cast steel is in a range of 0.3° C./sec or more and 100° C./sec or less.
20 . The steel continuous-casting method according to claim 10 , wherein at least one of a surface-layer cooling rate of the cast steel and a temperature drop of the cast steel is controlled by controlling an amount of cooling water discharged from the plurality of cooling-water-discharging nozzles and a transportation speed of the cast steel.Join the waitlist — get patent alerts
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