公开(公告)号：US08840834B2

公开(公告)日：2014-09-23

申请号：US12865542

申请日：2009-01-29

申请人： Hiroshi Matsuda ,  Reiko Mizuno ,  Yoshimasa Funakawa ,  Yasushi Tanaka

发明人： Hiroshi Matsuda ,  Reiko Mizuno ,  Yoshimasa Funakawa ,  Yasushi Tanaka

IPC分类号： C22C38/04 ,  C21D8/02 ,  C22C38/14

CPC分类号： C23C2/06 ,  C21D1/18 ,  C21D8/04 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/28

摘要： An ultra-high strength steel sheet has a tensile strength of 1400 MPa or higher that can achieve both high strength and good formability and an advantageous method for manufacturing the steel sheet and includes a composition including, on a mass basis C: 0.12% or more and 0.50% or less; Si: 2.0% or less; Mn: 1.0% or more and 5.0% or less; P: 0.1% or less; S: 0.07% or less; Al: 1.0% or less; and N: 0.008% or less, with the balance Fe and incidental impurities. The steel microstructure includes, on an area ratio basis, 80% or more of autotempered martensite, less than 5% of ferrite, 10% or less of bainite, and 5% or less of retained austenite; and the mean number of precipitated iron-based carbide grains each having a size of 5 nm or more and 0.5 μm or less and included in the autotempered martensite is 5×104 or more per 1 mm2.

摘要翻译： 超高强度钢板的拉伸强度为1400MPa以上，能够实现高强度和良好的成形性，并且制造钢板的优选方法包括以质量计C：0.12％以上的组合物 和0.50％以下; Si：2.0％以下; Mn：1.0％以上且5.0％以下; P：0.1％以下; S：0.07％以下; Al：1.0％以下; 和N：0.008％以下，余量为Fe和杂质。 所述钢微观结构以面积比为基准，具有80％以上的自回火马氏体，小于5％的铁素体，10％以下的贝氏体和5％以下的残留奥氏体， 并且包含在自回火马氏体中的尺寸为5nm以上且0.5μm以下的析出铁素体的平均粒子数为5×104以上。

公开(公告)号：US20240271760A1

公开(公告)日：2024-08-15

申请号：US18563682

申请日：2022-06-09

申请人： JFE STEEL COPORATION

发明人： Toshio TAKANO ,  Hiroshi OKANO ,  Shusaku TAKAGI

IPC分类号： F17C13/06 ,  F17C13/02

CPC分类号： F17C13/06 ,  F17C13/026 ,  F17C2205/0311 ,  F17C2205/0355 ,  F17C2221/012 ,  F17C2223/0161 ,  F17C2225/0123 ,  F17C2250/0439

摘要： A pressure accumulator includes a cylindrical body made of metal and configured to vaporize and store a liquefied gas in a storage space in the cylindrical body, a lid body having a through hole that allows a pipe to penetrate through the through hole, and being configured to close an opening end portion of the cylindrical body with a gap between the lid body and an inner peripheral surface of the cylindrical body, a sealing structure portion between an outer peripheral portion of the lid body and an inner peripheral portion of the cylindrical body, and a fixing part at the opening end portion of the cylindrical body, an outer peripheral surface of the fixing part being screw fastened to the inner peripheral surface of the cylindrical body to support and fix the lid body from an outer side of the lid body.