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：US10807185B2

公开(公告)日：2020-10-20

申请号：US15757224

申请日：2017-11-06

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Tatsuki Mitsuzumi ,  Ryosuke Mitsuoka ,  Takafumi Nakaya ,  Yujiro Watanabe ,  Hirotoshi Tagata ,  Ryusuke Kimoto

IPC: B23K11/06 ,  C21D9/50 ,  B23K11/36 ,  B23K11/16 ,  B23K9/32 ,  B23K11/30 ,  B23K37/00 ,  B23K101/18 ,  B23K103/04

Abstract: A welding apparatus including: a welding unit (20) that includes a pair of electrode wheels (21A, 21B) arranged to face each other with a welding object therebetween; a pressing unit (30) that includes a pair of press rolls (31A, 31B) that are arranged to face each other with the welding object therebetween and press a welded portion of the welding object welded by the electrode wheels (21A, 21B); a cooling unit (40) that supplies a cooling medium toward the welded portion pressed by the press rolls; a heating unit (50) that heats the welded portion cooled by the cooling unit (40); and a moving body (10) that supports the welding unit (20), the pressing unit (30), the cooling unit (40), and the heating unit (50), and reciprocates in a welding direction of the welding object.