JPWO2023286441A5 - - Google Patents

Claims (35)

a storage unit that stores a steel plate coil obtained by winding a steel strip into a coil;
A vibration adding device for adding vibration to the steel plate coil accommodated in the accommodation unit such that the vibration frequency of the steel plate coil is 100 to 100000 Hz and the maximum amplitude of the steel plate coil is 10 nm to 500 μm. and,
A dehydrogenation device. 3. The vibration applying device has an electromagnet having magnetic pole faces spacedly opposed to the surface of the steel plate coil, and is configured to vibrate the steel plate coil due to an external force applied to the steel plate coil by the electromagnet. 2. The dehydrogenation device according to 1. 2. The dehydrogenation apparatus according to claim 1, wherein said vibration addition device has a vibrator that contacts said steel plate coil, and is configured to vibrate said steel plate coil with said vibrator. The dehydrogenation apparatus according to any one of claims 1 to 3, further comprising a heating section for applying the vibration while heating the steel sheet coil. a dispensing device for dispensing a steel strip from a steel plate coil;
a threading device for threading the steel strip;
a winding device for winding the steel strip;
Vibration for adding vibration to the steel strip being threaded by the strip threading device such that the vibration frequency of the steel strip is 100 to 100000 Hz and the maximum amplitude of the steel strip is 10 nm to 500 μm. an additional device;
A dehydrogenation device. The vibration applying device has an electromagnet having a magnetic pole surface facing the surface of the steel strip being threaded with a space therebetween, and is configured to vibrate the steel strip by an external force applied to the steel strip by the electromagnet. 6. The dehydrogenation device according to claim 5. 6. The dehydrogenation apparatus according to claim 5, wherein said vibration adding device has a vibrator that contacts said steel strip being threaded, and is configured to vibrate said steel strip by said vibrator. The dehydrogenation apparatus according to any one of claims 5 to 7, further comprising a heating section for applying said vibration while heating said steel strip. 6. The dehydrogenation device according to claim 1, further comprising a damping section for preventing transmission of said vibration to the outside of said dehydrogenation device. a hot rolling device for hot-rolling a steel slab into a hot-rolled steel sheet;
a hot-rolled steel sheet winding device for winding the hot-rolled steel sheet to obtain a hot-rolled coil;
The dehydrogenation device according to claim 1 or 5 , wherein the hot-rolled coil is the steel sheet coil;
A steel plate manufacturing system. a cold-rolling device for cold-rolling a hot-rolled steel sheet to form a cold-rolled steel sheet;
a cold-rolled steel sheet winding device for winding the cold-rolled steel sheet to obtain a cold-rolled coil;
The dehydrogenation device according to claim 1 or 5 , wherein the cold-rolled coil is the steel sheet coil;
A steel plate manufacturing system. a batch annealing furnace for obtaining an annealed coil by subjecting cold-rolled coils or hot-rolled coils to batch annealing;
The dehydrogenation device according to claim 1 or 5 , wherein the annealing coil is the steel sheet coil,
A steel plate manufacturing system. A pre-annealing dispensing device for dispensing cold-rolled steel sheets or hot-rolled steel sheets from cold-rolled coils or hot-rolled coils, respectively;
a continuous annealing furnace for continuously annealing the cold-rolled steel sheet or hot-rolled steel sheet to obtain an annealed steel sheet;
An annealed steel sheet winding device for winding the annealed steel sheet to obtain an annealed coil;
The dehydrogenation device according to claim 1 or 5 , wherein the annealing coil is the steel sheet coil,
A steel plate manufacturing system. A plating apparatus for forming a plating film on the surface of a hot-rolled steel sheet or a cold-rolled steel sheet to obtain a plated steel sheet;
a plated steel sheet winding device for winding the plated steel sheet to obtain a plated steel sheet coil;
The dehydrogenation device according to claim 1 or 5 , wherein the plated steel sheet coil is the steel sheet coil;
A steel plate manufacturing system. The steel sheet manufacturing system according to claim 14, wherein the plating apparatus is a hot-dip galvanizing apparatus. 15. The steel sheet manufacturing system according to claim 14, wherein the plating equipment includes a hot dip galvanizing equipment followed by an alloying furnace. The steel sheet manufacturing system according to claim 14, wherein the plating device is an electroplating device. Vibration is added to a steel plate coil obtained by winding a steel strip into a coil so that the vibration frequency of the steel plate coil is 100 to 100000 Hz and the maximum amplitude of the steel plate coil is 10 nm to 500 μm. A method for manufacturing a steel plate, including a vibration applying step for forming a coil. The steel sheet manufacturing method according to claim 18, wherein the vibration applying step is performed while the steel sheet coil is kept at 300°C or less. A step of dispensing a steel strip from a steel plate coil;
a threading step of threading the steel strip;
a step of winding the steel strip into a product coil;
and in the step of threading the steel strip, vibration is applied to the steel strip so that the vibration frequency of the steel strip is 100 to 100000 Hz and the maximum amplitude of the steel strip is 10 nm to 500 μm. A method of manufacturing a steel plate, including a vibration adding step. The method for manufacturing a steel sheet according to claim 20, wherein the vibration applying step is performed while maintaining the steel strip at 300°C or lower. a step of hot-rolling a steel slab into a hot-rolled steel sheet;
a step of winding the hot-rolled steel sheet to obtain a hot-rolled coil;
The method for manufacturing a steel sheet according to any one of claims 18 to 21, wherein the hot-rolled coil is the steel sheet coil. a step of cold-rolling a hot-rolled steel sheet to form a cold-rolled steel sheet;
a step of winding the cold-rolled steel sheet to obtain a cold-rolled coil;
The steel sheet manufacturing method according to any one of claims 18 to 21, wherein the cold-rolled coil is the steel sheet coil. The steel sheet manufacturing method according to any one of claims 18 to 21, comprising a step of subjecting a cold-rolled coil or a hot-rolled coil to batch annealing to obtain an annealed coil, wherein the annealed coil is the steel sheet coil. unloading the cold-rolled steel sheet or hot-rolled steel sheet from the cold-rolled coil or the hot-rolled coil, respectively;
a step of continuously annealing the cold-rolled steel sheet or the hot-rolled steel sheet to obtain an annealed steel sheet;
A step of winding the annealed steel sheet to obtain an annealed coil;
The steel sheet manufacturing method according to any one of claims 18 to 21, wherein the annealing coil is the steel sheet coil. A plating step of forming a plating film on the surface of a hot-rolled steel sheet or a cold-rolled steel sheet to obtain a plated steel sheet;
A step of winding the plated steel sheet to obtain a plated steel sheet coil;
The method for manufacturing the steel sheet according to any one of claims 18 to 21, wherein the plated steel sheet coil is the steel sheet coil. The steel sheet manufacturing method according to claim 26, wherein the plating step includes a hot dip galvanizing step. The steel sheet manufacturing method according to claim 26, wherein the plating step includes a hot dip galvanizing step followed by an alloying step. The method for manufacturing a steel sheet according to claim 26, wherein the plating step includes an electroplating step. The method for manufacturing a steel sheet according to any one of claims 18 to 21 , wherein the product coil is made of a high-strength steel sheet having a tensile strength of 590 MPa or more. The product coil, in % by mass,
C: 0.030% or more and 0.800% or less,
Si: 0.01% or more and 3.00% or less,
Mn: 0.01% or more and 10.00% or less,
P: 0.001% or more and 0.100% or less,
S: 0.0001% or more and 0.0200% or less,
Any one of claims 18 to 21 , comprising a base steel sheet having a chemical composition containing N: 0.0005% or more and 0.0100% or less and Al: 2.000% or less, with the balance being Fe and unavoidable impurities. 2. A method for producing a steel sheet according to item 1. The component composition is further mass %,
Ti: 0.200% or less,
Nb: 0.200% or less,
V: 0.500% or less,
W: 0.500% or less,
B: 0.0050% or less,
Ni: 1.000% or less,
Cr: 1.000% or less,
Mo: 1.000% or less,
Cu: 1.000% or less,
Sn: 0.200% or less,
Sb: 0.200% or less,
Ta: 0.100% or less,
Ca: 0.0050% or less,
Mg: 0.0050% or less,
The method for producing a steel sheet according to claim 31, further comprising at least one element selected from the group consisting of Zr: 0.0050% or less and REM: 0.0050% or less. The product coil, in mass %,
C: 0.001% or more and 0.400% or less,
Si: 0.01% or more and 2.00% or less,
Mn: 0.01% or more and 5.00% or less,
P: 0.001% or more and 0.100% or less,
S: 0.0001% or more and 0.0200% or less,
Cr: 9.0% or more and 28.0% or less,
Ni: 0.01% or more and 40.0% or less,
Any one of claims 18 to 21 , comprising a stainless steel sheet having a chemical composition containing N: 0.0005% or more and 0.500% or less and Al: 3.000% or less, with the balance being Fe and unavoidable impurities. 2. A method for producing a steel sheet according to item 1. The component composition further, in mass %,
Ti: 0.500% or less,
Nb: 0.500% or less,
V: 0.500% or less,
W: 2.000% or less,
B: 0.0050% or less,
Mo: 2.000% or less,
Cu: 3.000% or less,
Sn: 0.500% or less,
Sb: 0.200% or less,
Ta: 0.100% or less,
Ca: 0.0050% or less,
Mg: 0.0050% or less,
The method for producing a steel sheet according to claim 33, further comprising at least one element selected from the group consisting of Zr: 0.0050% or less and REM: 0.0050% or less. The steel sheet manufacturing method according to any one of claims 18 to 21 , wherein the product coil has a diffusible hydrogen content of 0.50 ppm by mass or less.