公开(公告)号：US11814736B2

公开(公告)日：2023-11-14

申请号：US16982905

申请日：2018-04-16

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Kosei Tsuji ,  Ryusuke Nakatsuka ,  Masashi Yoshikawa ,  Shinji Nanba

IPC: C23G1/02 ,  C23G3/02 ,  B08B3/04 ,  B08B3/08 ,  C23G1/08

CPC classification number: C23G3/021 ,  B08B3/041 ,  B08B3/08 ,  C23G1/086 ,  C23G3/026 ,  C23G3/027 ,  B08B2203/007

Abstract: A pickling facility includes: a pickling tank for storing an acid solution; a conveyance part for continuously conveying a steel plate immersed in the acid solution; a measurement part for measuring at least one parameter which has a correlation with a heat transfer coefficient between the acid solution and a reference surface disposed in the acid solution so as to face the steel plate; and a conveyance speed decision part configured to decide a conveyance speed of the steel plate conveyed by the conveyance part, on the basis of a measurement result of the at least one parameter.

公开(公告)号：US09951407B2

公开(公告)日：2018-04-24

申请号：US15311031

申请日：2015-04-23

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Takashi Yonekura ,  Masao Tanbara ,  Masashi Yoshikawa

IPC: C23C2/20 ,  B05C11/02 ,  B05C11/06 ,  C23C2/18 ,  B05C9/08 ,  C23C2/00

CPC classification number: C23C2/20 ,  B05C9/08 ,  B05C11/02 ,  B05C11/06 ,  C23C2/003 ,  C23C2/18

Abstract: The present invention reduces the amount of gas consumed, edge-overcoating and splashing and adjusts plating thickness with high precision by providing a wiping nozzle with: thin plates, which are each inserted into a lip from the entrances to the lip for a specified distance to the inside of the two ends of the lip in the sheet width direction in order to seal the gas jet where the thin plates are inserted, and which are movable in the sheet width direction of the lip; and ropes extending in the sheet width direction of the lip so as to track the movements of the thin plates and seal the gas jet in a specified range.

公开(公告)号：US11478833B2

公开(公告)日：2022-10-25

申请号：US16478767

申请日：2017-02-20

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Takashi Yonekura ,  Masao Tambara ,  Masashi Yoshikawa

IPC: B21D1/00 ,  B21C51/00 ,  B65H23/34

Abstract: A crossbow correction device 16 for correcting crossbow of a steel strip S by a magnetic force during conveyance includes a plurality of electromagnets 57a to 57d, 67a to 67d arranged in a strip width direction of the steel strip S and facing each other so as to sandwich the steel strip S in a strip thickness direction, a moving mechanism 51 to 54, 61 to 64 capable of moving the electromagnets 57a to 57d, 67a to 67d relative to the steel strip S, and a controller 17 configured to operate the moving mechanism 51 to 54, 61 to 64, based on a current value flowing through the electromagnets 57a to 57d, 67a to 67d.

公开(公告)号：US12139797B2

公开(公告)日：2024-11-12

申请号：US17439720

申请日：2019-03-22

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Kosei Tsuji ,  Ryusuke Nakatsuka ,  Takahiro Yagi ,  Masashi Yoshikawa ,  Hideaki Takatani ,  Toyoaki Yasui ,  Takuya Hirata

IPC: C23G3/02 ,  C23G1/08 ,  C23G1/36

Abstract: An acid solution preparation device is an acid solution preparation device for preparing an acid solution used for pickling of a steel plate, the device including a sealed tank for storing the acid solution, a gas supply part for supplying an oxygen-containing gas from outside of the sealed tank to the sealed tank, and a purge part for discharging a gas in the sealed tank to the outside.

公开(公告)号：US12091757B2

公开(公告)日：2024-09-17

申请号：US17607781

申请日：2020-01-09

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Kosei Tsuji ,  Ryusuke Nakatsuka ,  Masashi Yoshikawa ,  Takuya Hirata

IPC: C23G1/08 ,  C23G3/02

CPC classification number: C23G1/08 ,  C23G3/021 ,  C23G3/025

Abstract: A method for pickling a steel plate having a first steel plate portion and a second steel plate portion which is connected to a tail end of the first steel plate portion and which requires a longer time for pickling than the first steel plate portion when pickled under the same condition includes: a step of pickling the steel plate by immersing the steel plate in an acid solution in at least one pickling tank while conveying the steel plate; a step of circulating the acid solution, through a circulation line connected to any of the at least one pickling tank, between the pickling tank and an oxidizing device disposed in the circulation line; a step of oxidizing Fe2+ in the acid solution to Fe3+ by the oxidizing device using a gaseous oxidant; and a feeding start step of, upon switching from pickling of the first steel plate portion to pickling of the second steel plate portion, starting feeding of a liquid oxidant for oxidizing Fe2+ in the acid solution to Fe3+ to any of the at least one pickling tank or to the circulation line.

公开(公告)号：US11286539B2

公开(公告)日：2022-03-29

申请号：US16644327

申请日：2017-11-20

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Takanori Nagai ,  Masashi Yoshikawa ,  Ryusuke Kimoto

IPC: C21D9/573

Abstract: A cooling device for a metal plate includes a plurality of first nozzles and a plurality of second nozzles disposed on both sides of the metal plate, respectively, in a thickness direction of the metal plate across a pass line of the metal plate. The plurality of first nozzles form a staggered array in which a pitch in a width direction of the metal plate is Xn, a pitch in a longitudinal direction of the metal plate is Yn, and an offset amount in the width direction of a pair of first nozzles disposed adjacent to each other in the longitudinal direction is ΔXn. The plurality of second nozzles form a staggered array in which a pitch in the width direction is Xn, a pitch in the longitudinal direction is Yn, and an offset amount in the width direction of a pair of second nozzles disposed adjacent to each other in the longitudinal direction is ΔXn. The staggered array of the first nozzles and the staggered array of the second nozzles are disposed offset from each other such that, a center of the second nozzle is at a position offset by a shift amount S from a center of the first nozzle in the width direction, and the center of the second nozzle is positioned in a region defined by an oval having a semi-axis of ΔXn/4 in the width direction and a semi-axis of Yn/3 in the longitudinal direction. The shift amount S is expressed by S=m×ΔXn/2, where m is an odd number such that S is closest to Xn/2.

公开(公告)号：US11248288B2

公开(公告)日：2022-02-15

申请号：US16479457

申请日：2017-04-14

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Takashi Yonekura ,  Masao Tambara ,  Masashi Yoshikawa ,  Shinya Kanemori ,  Kazuki Yoshida

IPC: C23C2/20 ,  C23C2/00 ,  C23C2/06 ,  B05C11/10 ,  B05C11/06 ,  B05D1/18 ,  B05D3/00 ,  G05D5/03 ,  B05B12/08 ,  B05C3/12 ,  B05D3/04

Abstract: When a portion for measuring the plating adhesion amount reaches an upstream side position, plating adhesion amount estimation values are calculated by using a plating adhesion amount estimation expression at positions away from a position that faces the distance sensors, that is, the upstream side position, by strip-width direction distances, of the surfaces of the steel strip. When the portion for measuring the plating adhesion amount reaches a downstream side position, the strip-width direction distances of the plating adhesion amount meters are matched to the strip-width direction distances, and the plating adhesion amount actual measurement values are obtained. The plating adhesion amount estimation expression is corrected on the basis of the differences between the plating adhesion amount estimation values and the plating adhesion amount actual measurement values. Accordingly, the control accuracy of the plating adhesion amount is improved.

公开(公告)号：US10815559B2

公开(公告)日：2020-10-27

申请号：US15756707

申请日：2017-02-20

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Takashi Yonekura ,  Masao Tambara ,  Masashi Yoshikawa ,  Shinji Nanba

IPC: C23C2/20 ,  C23C2/40 ,  C23C2/16 ,  C23C2/18

Abstract: Provided are a molten metal plating facility and a method with which degradation in the surface quality of a strip can be prevented by preventing the adhesion of splashes. In a molten metal plating facility and a method for plating a strip (S) with molten metal by guiding the strip (S) into a molten metal bath (Mm) and then guiding the strip (S) upward, a pair of wiping nozzles (12a, 12b) disposed so as to face a front surface side and a back surface side of the strip (S) guided upward is used to discharge air streams (Ea, Eb) toward a collision point (A) inside the strip (S) such that the first air streams spread out in a strip width direction of the strip (S), and a pair of outer nozzles (15a, 15b) disposed so as to face a front surface side and a back surface side of an extended plane on an outer side of the strip (S) with respect to the strip width direction, above the wiping nozzles (12a, 12b) and on each of both outer sides of the strip (S) with respect to the strip width direction is used to discharge air streams (Fa, Fb) toward a collision point (B) within the extended plane and below the collision point (A).