公开(公告)号：US11428408B2

公开(公告)日：2022-08-30

申请号：US16635697

申请日：2017-10-18

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Takanori Nagai

IPC: F23D14/02 ,  F23Q9/02

Abstract: A premix burner for combusting premixed gas containing fuel and air mixed in advance includes a plurality of combustion nozzles including a first nozzle having an ignition rod disposed therein and a second nozzle other than the first nozzle, a first premixed gas passage for supplying the premixed gas to the first nozzle, and a second premixed gas passage for supplying the premixed gas to the second nozzle. The first premixed gas passage and the second premixed gas passage are fluidically isolated from each other.

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：US10662536B2

公开(公告)日：2020-05-26

申请号：US15756685

申请日：2016-08-19

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Takanori Nagai

IPC: C21D9/56 ,  C23G3/02 ,  F27D17/00 ,  F27B9/28 ,  F27B9/30 ,  C23G1/19

Abstract: Continuous annealing equipment (1) including a cleaning device (11, 12) for performing a cleaning treatment on a steel strip (S) and an annealing device (12) for performing an annealing treatment on the steel strip (S) comprises an exhaust gas passage (31, 41) through which an exhaust gas discharged from the annealing device (12) flows, a solution circulation passage (32, 51) through which a cleaning solution used in the cleaning device (11, 12) circulates, and a heat exchanger (53) which forms a part of the solution circulation passage (32, 51) and contacts with the exhaust gas.