公开(公告)号：US20200220340A1

公开(公告)日：2020-07-09

申请号：US16612778

申请日：2018-05-29

Applicant: JFE STEEL CORPORATION

Inventor： Yasuhide ISHIGURO ,  Akio SATO ,  Shigeto SAKASHITA

IPC: H02G3/04 ,  F16L1/16 ,  F16L1/235 ,  F16L9/18 ,  F16L59/075 ,  H01B12/00

Abstract: A thermal-insulated multi-walled pipe for superconducting power transmission comprises: a superconducting cable; a multi-walled pipe composed of a plurality of straight pipes and houses the superconducting cable; and a plurality of spacers that are located between adjacent two straight pipes of the plurality of straight pipes, wherein a cross-sectional shape of each spacer is a polygon having three or more vertices, each spacer has a through-hole at a center in the plane, an inner straight pipe is located to pass through the through-hole, a frictional coefficient μi between each spacer and the inner straight pipe is 0.1 or less, a frictional coefficient μo between each spacer and an outer straight pipe is 0.1 or less, and a ratio Ld/d of a diagonal equivalent length Ld of the polygon to an inner diameter d of the outer straight pipe of the adjacent two straight pipes is 0.9 or less.

公开(公告)号：US20160203596A1

公开(公告)日：2016-07-14

申请号：US14917132

申请日：2014-08-29

Applicant: JFE STEEL CORPORATION

Inventor： Toshifumi KODAMA ,  Shigeto SAKASHITA

IPC: G06T7/00 ,  B23K26/03

CPC classification number: G06T7/0008 ,  B23K26/032 ,  B23K26/262 ,  B23K31/125 ,  G06T2207/30164

Abstract: A laser beam welding diagnosis apparatus includes: an imaging unit configured to capture images of a laser beam welding penetration side of a laser beam welded portion at a predetermined time interval; a feature amount calculating unit configured to calculate, from an image captured by the imaging unit, a feature amount of a jetted portion accompanying laser beam welding penetration; a welding diagnosis unit configured to determine that a welding defect in the laser beam welded portion has occurred when values of the feature amounts of a predetermined area around the laser beam welded portion on the laser beam welding penetration side become equal to or less than a predetermined value for a predetermined duration or longer; and an output unit configured to output a welding quality state including the occurrence of the welding defect.

Abstract translation: 激光束焊接诊断装置包括：成像单元，被配置为以预定的时间间隔捕获激光束焊接部分的激光束焊接穿透侧的图像; 特征量计算单元，被配置为从由所述成像单元捕获的图像计算伴随激光束焊接穿透的喷射部分的特征量; 焊接诊断单元，被配置为当激光束焊接穿透侧的激光束焊接部周围的预定区域的特征量的值变得等于或小于预定值时，确定激光束焊接部分中的焊接缺陷已经发生 值预定持续时间或更长时间; 以及输出单元，被配置为输出包括焊接缺陷的发生的焊接质量状态。