公开(公告)号：US20170275743A1

公开(公告)日：2017-09-28

申请号：US15512212

申请日：2015-09-28

Applicant: HITACHI METALS, LTD.

Inventor： Ryutaro ABE ,  Tomonori UENO ,  Eiji SHIMOHIRA ,  Gang HAN

IPC: C22C38/44 ,  C21D6/04 ,  C21D6/00

CPC classification number: C22C38/44 ,  C21D1/18 ,  C21D6/004 ,  C21D6/02 ,  C21D6/04 ,  C21D7/13 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/50

Abstract: The present invention is to provide a method for manufacturing a martensite-based precipitation strengthening stainless steel, which effectively enables crystal grains to become finer by improving a solution treatment method. The method for manufacturing a martensite-based precipitation strengthening stainless steel containing 0.01 to 0.05 mass % of C, 0.2 mass % or less of Si, 0.4 mass % or less of Mn, 7.5 to 11.0 mass % of Ni, 10.5 to 14.5 mass % of Cr, 1.75 to 2.50 mass % of Mo, 0.9 to 2.0 mass % of Al, less than 0.2 mass % of Ti, and Fe and impurities as a remainder, which is provided by the present invention, includes performing a solid solution treatment at 845 to 895° C. once or more.

公开(公告)号：US09556503B1

公开(公告)日：2017-01-31

申请号：US14871774

申请日：2015-09-30

Applicant: Jeffrey A. Hawk ,  Paul D. Jablonski ,  Christopher J. Cowen

Inventor： Jeffrey A. Hawk ,  Paul D. Jablonski ,  Christopher J. Cowen

IPC: C22C38/44 ,  C22C38/54 ,  C22C38/52 ,  C22C38/48 ,  C22C38/46 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC classification number: C22C38/54 ,  C21D6/00 ,  C21D6/002 ,  C21D6/02 ,  C21D8/00 ,  C21D8/005 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52

Abstract: The disclosure provides a creep resistant alloy having an overall composition comprised of iron, chromium, molybdenum, carbon, manganese, silicon, nickel, vanadium, niobium, nitrogen, tungsten, cobalt, tantalum, boron, copper, and potentially additional elements. In an embodiment, the creep resistant alloy has a molybdenum equivalent Mo(eq) from 1.475 to 1.700 wt. % and a quantity (C+N) from 0.145 to 0.205. The overall composition ameliorates sources of microstructural instability such as coarsening of M23C6carbides and MX precipitates, and mitigates or eliminates Laves and Z-phase formation. A creep resistant martensitic steel may be fabricated by preparing a melt comprised of the overall composition followed by at least austenizing and tempering. The creep resistant alloy exhibits improved high-temperature creep strength in the temperature environment of around 650° C.

Abstract translation: 本公开提供了具有由铁，铬，钼，碳，锰，硅，镍，钒，铌，氮，钨，钴，钽，硼，铜和潜在附加元素组成的总体组成的抗蠕变合金。 在一个实施方案中，耐蠕变合金具有钼当量Mo（eq），为1.475至1.700wt。 ％，数量（C + N）为0.145〜0.205。 整体组成改善了微结构不稳定性的来源，如M23C6碳化物和MX沉淀物的粗化，减轻或消除了Laves和Z相的形成。 耐蠕变马氏体钢可以通过制备由整体组成组成的熔体，然后至少进行奥氏体化和回火来制造。 耐蠕变合金在约650℃的温度环境中表现出改善的高温蠕变强度。

公开(公告)号：US09541281B2

公开(公告)日：2017-01-10

申请号：US13858282

申请日：2013-04-08

Applicant: Hitachi, Ltd.

Inventor： Shinya Imano ,  Hiroyuki Doi ,  Jun Sato

IPC: F22B37/04 ,  F16L9/02 ,  B23K31/02 ,  B32B1/08 ,  B32B15/01 ,  C22C19/05 ,  C22C19/03 ,  B32B15/04 ,  C22F1/10 ,  F22B37/10 ,  B23K35/30 ,  B23K35/40 ,  B23K35/02 ,  B23K9/028 ,  B23K9/167 ,  B23K9/23 ,  C21D6/02 ,  C21D8/10 ,  C21D9/08 ,  F16L13/02 ,  C21D6/00

CPC classification number: F22B37/04 ,  B23K9/0282 ,  B23K9/167 ,  B23K9/23 ,  B23K31/027 ,  B23K35/0261 ,  B23K35/3033 ,  B23K35/304 ,  B23K35/40 ,  B23K2101/06 ,  B23K2101/10 ,  B23K2103/08 ,  B23K2103/26 ,  B32B1/08 ,  B32B15/01 ,  B32B15/043 ,  C21D6/001 ,  C21D6/02 ,  C21D8/10 ,  C21D9/08 ,  C21D2251/04 ,  C22C19/03 ,  C22C19/05 ,  C22C19/051 ,  C22C19/055 ,  C22C19/056 ,  C22F1/10 ,  F16L9/02 ,  F16L13/02 ,  F22B37/10 ,  Y10T428/12931 ,  Y10T428/12944 ,  Y10T428/13

Abstract: A high-temperature piping product is configured from a plurality of primary pipe members and a welding material. The primary pipe members are each made from an Ni-based forged alloy containing: Ni, Al, and at least one of Mo and W. The total content of the Mo and the W being 3-8 mass %. The Ni-based forged alloy exhibiting a γ′-phase dissolution temperature of from 920 to 970° C., and the γ′ phase being precipitated in 30 volume % or more in a temperature range of from 700 to 800° C. The welding material is made from an Ni-based cast alloy having a cast structure formed by welding. The Ni-based cast alloy containing: Ni, Al, and at least one of Mo and W, the total content of the Mo and the W being 9-15 mass %, the Ni-based cast alloy exhibiting a γ′-phase dissolution temperature of from 850 to 900° C.

Abstract translation: 高温管道产品由多个主管件和焊接材料构成。 主要管件均由Ni，Al和Mo和W中的至少一种Ni基锻造合金制成.Mo和W的总含量为3-8质量％。 Ni系锻造合金的γ'相溶解温度为920〜970℃，γ'相在700〜800℃的温度范围内析出为30体积％以上。焊接 材料由具有通过焊接形成的铸造结构的Ni基铸造合金制成。 含有Ni，Al，Mo和W中的至少一种的Ni基铸造合金，Mo和W的总含量为9〜15质量％，Ni系铸造合金具有γ'相溶解 温度为850〜900℃

公开(公告)号：US20160355909A1

公开(公告)日：2016-12-08

申请号：US15117578

申请日：2015-02-09

Applicant: UDDEHOLMS AB

Inventor： Magnus TIDESTEN ,  Lena RAHLEN

IPC: C22C38/46 ,  C22C38/06 ,  C22C38/04 ,  C21D9/00 ,  C22C38/00 ,  B29C33/38 ,  C21D6/00 ,  C21D6/02 ,  C22C38/44 ,  C22C38/02

CPC classification number: C22C38/46 ,  B29C33/38 ,  B29K2905/00 ,  B29K2905/12 ,  C21D6/002 ,  C21D6/004 ,  C21D6/02 ,  C21D9/0068 ,  C21D2211/001 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/44 ,  C22C38/60

Abstract: The invention relates to a martensitic stainless steel for plastic forming moulds requiring a high hardness and a good corrosion resistance. The stainless steel consists of in weight % (wt. %): C 0.56-0.82, N 0.08-0.25, C+N 0.60-1.0, Si 1.05-2.0, Mn 0.2-1.0, Cr 12-16, Mo 0.1-0.8, V 0.10-0.45, Al≦0.3, P≦0.05, S≦0.5, optional elements, and balance Fe impurities.

Abstract translation: 本发明涉及一种用于塑性成型模具的马氏体不锈钢，其需要高硬度和良好的耐腐蚀性。 不锈钢以重量％（重量％）：C 0.56-0.82，N 0.08-0.25，C + N 0.60-1.0，Si 1.05-2.0，Mn 0.2-1.0，Cr 12-16，Mo 0.1-0.8 ，V 0.10-0.45，Al≤0.3，P≤0.05，S≤0.5，任选元素，余量为Fe杂质。

公开(公告)号：US20160339507A1

公开(公告)日：2016-11-24

申请号：US15106901

申请日：2015-01-27

Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.

Inventor： Kohei HATANO ,  Hiroharu OYAMA ,  Yasuo MATSUNAMI ,  Naoyuki UMEZU ,  Shuhei KUROKI ,  Hidetaka HARAGUCHI ,  Takumi MATSUMURA

IPC: B21K3/04 ,  B23P15/02

CPC classification number: B21K3/04 ,  B21J1/06 ,  B23P15/02 ,  C21D6/02 ,  C21D7/13 ,  C21D9/00 ,  C21D9/0018 ,  C21D9/0068 ,  F01D5/225 ,  F01D5/28 ,  F05D2220/31 ,  F05D2230/25 ,  F05D2300/171

Abstract: A method of manufacturing a turbine blade, the method comprising the steps of forming a forging by forging stainless steel; heat treating the forging; and cooling the forging after the heat treatment; wherein in the heat treatment and the cooling, a plurality of the forgings are arranged in alignment, and adjacent forgings of the plurality of forgings are disposed so that at least respective portions of portions of the adjacent forgings corresponding to a region from a portion corresponding to a platform of a turbine blade to a center in a longitudinal direction of the turbine blade face each other and warm each other via radiant heat.

Abstract translation: 一种制造涡轮叶片的方法，所述方法包括以下步骤：通过锻造不锈钢来形成锻造; 热处理锻造; 并在热处理后冷却锻造; 其特征在于，在所述热处理和所述冷却中，多个所述锻件被排列成对准，并且所述多个锻件的相邻锻件被配置为使得相邻锻件的至少相应部分的部分对应于与 涡轮机叶片的平台在涡轮叶片的纵向方向上的中心彼此面对并且通过辐射热相互暖和。

公开(公告)号：US20160289785A1

公开(公告)日：2016-10-06

申请号：US15034444

申请日：2014-11-13

Applicant: NSK LTD.

Inventor： Chikara MATSUZAWA ,  Takafumi YASUHARA ,  Hiroshi NISHIZAWA ,  Norihiro AOKI ,  Koji TAKANO ,  Masaru KUGE

IPC: C21D9/40 ,  C21D1/18 ,  C22C38/00 ,  C21D6/04 ,  C21D6/02 ,  C22C38/22 ,  F16C33/62 ,  C21D6/00

CPC classification number: C21D9/40 ,  C21D1/18 ,  C21D6/002 ,  C21D6/02 ,  C21D6/04 ,  C21D9/00 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/22 ,  F16C19/06 ,  F16C33/32 ,  F16C33/62 ,  F16C33/64 ,  F16C2204/72 ,  F16C2240/48 ,  F16C2316/13

Abstract: A martensitic stainless steel containing, by mass %, C: 0.20% to 0.40%, N: 0.1% or less, Mo: 3% or less, and Cr: 12.0% to 16.0%, such that 0.3%≦C+N≦0.4% and a PI value (=Cr+3.3Mo+16N) is 18 or more, with the remainder being substantially Fe and unavoidable impurities is quenched from a temperature of 1,030° C. to 1,140° C. and subjected to a subzero treatment and tempering so as to obtain a prior austenite crystal grain size of a surface layer of 30 μm to 100 μm and a surface hardness of 58 HRc to 62 HRc.

Abstract translation: 马氏体系不锈钢，以质量％计含有C：0.20〜0.40％，N：0.1％以下，Mo：3％以下，Cr：12.0％〜16.0％，0.3％≤C+N≤ 0.4％，PI值（= Cr + 3.3Mo + 16N）为18以上，余量基本为Fe，不可避免的杂质从1030℃至1140℃骤冷，进行亚零位处理 回火，得到表面层的原奥氏体晶粒尺寸为30μm〜100μm，表面硬度为58HRC〜62HRC。

公开(公告)号：US20160245132A1

公开(公告)日：2016-08-25

申请号：US15147087

申请日：2016-05-05

Applicant: L.E. Jones Company

Inventor： Cong Yue Qiao ,  David Doll ,  Todd Trudeau ,  Peter Vennema

IPC: F01L3/02 ,  C22C38/52 ,  C22C38/48 ,  C22C38/46 ,  C21D6/02 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/00 ,  C21D1/18 ,  C22C38/54 ,  C22C38/44

CPC classification number: F01L3/02 ,  C21D1/18 ,  C21D1/25 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/007 ,  C21D6/008 ,  C21D6/02 ,  C21D9/0068 ,  C21D2211/004 ,  C21D2211/008 ,  C22C37/08 ,  C22C37/10 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/30 ,  C22C38/32 ,  C22C38/36 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C22C38/54 ,  C22C38/56 ,  F16K25/005 ,  Y10T29/49409

Abstract: An iron-based alloy includes (in weight percent) carbon from about 1 to about 2 percent; manganese up to about 1 percent; silicon up to about 1 percent; nickel up to about 4 percent; chromium from about 10 to about 25 percent; molybdenum from about 5 to about 20 percent; tungsten up to about 4 percent; cobalt from about 17 to about 23 percent; vanadium up to about 1.5 percent; boron up to about 0.2 percent; sulfur up to about 0.03 percent; nitrogen up to about 0.4 percent; phosphorus up to about 0.06 percent; niobium up to about 4 percent; iron from about 35 to about 55 percent; and incidental impurities. The chromium/molybdenum ratio of the iron-based alloy is from about 1 to about 2.5. The alloy is suitable for use in elevated temperature applications, such as valve seat inserts for combustion engines.

Abstract translation: 铁基合金包括（以重量百分比计）约1％至约2％的碳; 锰高达约1％; 硅达到1％左右; 镍高达约4％; 约10至约25％的铬; 约5至约20％的钼; 钨高达4％左右; 约17至约23％的钴; 钒高达1.5％左右; 硼达到约0.2％; 硫达到0.03％左右; 氮高达约0.4％; 磷高达0.06％左右; 铌达4％左右; 铁约35至55％; 和杂质。 铁基合金的铬/钼比为约1至约2.5。 该合金适用于高温应用，如用于内燃机的阀座插件。

公开(公告)号：US20160138123A1

公开(公告)日：2016-05-19

申请号：US14375150

申请日：2013-08-08

Applicant: Erwen Huang

Inventor： Erwen Huang

IPC: C21D6/02 ,  C22C38/60 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  F01D5/28 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  C22C38/44

CPC classification number: C21D6/02 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D7/13 ,  C21D8/00 ,  C21D2211/001 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/007 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60 ,  F01D5/28 ,  F05D2300/171

Abstract: Forged precipitation-hardened stainless steel alloys are provided. The forged precipitation-hardened stainless steel alloy can include, by weight, about 14.0% to about 16.0% chromium, about 6.0% to about 8.0% nickel, about 1.25% to about 1.75% copper, about 1.0% to about 2.0% molybdenum, about 0.001% to about 0.05% carbon, a carbide forming element in an amount of about 0.3% to about 0.8% and greater than about 8 times that of carbon, the balance iron, and incidental impurities. Generally, the carbide forming element is selected from the group consisting of titanium, zirconium, tantalum, and a mixture thereof.

Abstract translation: 提供锻造沉淀硬化的不锈钢合金。 锻造的沉淀硬化不锈钢合金可包括重量约14.0％至约16.0％的铬，约6.0％至约8.0％的镍，约1.25％至约1.75％的铜，约1.0％至约2.0％的钼， 约0.001％至约0.05％的碳，碳化物形成元素的量为约0.3％至约0.8％且大于碳，余量铁和附带杂质的约8％。 通常，碳化物形成元件选自钛，锆，钽及其混合物。

公开(公告)号：US20160053353A1

公开(公告)日：2016-02-25

申请号：US14780468

申请日：2014-03-27

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Yoshiharu INOUE ,  Norihiro KANNO ,  Koji ITO ,  Takeshi TOMURA ,  Koichi IUCHI

IPC: C22C38/54 ,  C21D9/46 ,  C21D6/00 ,  C22C38/50 ,  C22C38/48 ,  C22C38/00 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D8/02 ,  C22C38/46

CPC classification number: C22C38/54 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D6/02 ,  C21D8/02 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0463 ,  C21D9/46 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

Abstract: Ferritic stainless steel hot rolled sheet and steel strip excellent in toughness and corrosion resistance which have a predetermined chemical composition, have a Charpy impact value at 0° C. of 10 J/cm2 or more, and have a thickness of 5.0 to 9.0 mm.

Abstract translation: 具有预定化学组成的韧性和耐腐蚀性优异的铁素体不锈钢热轧板和钢带在0℃下的夏比冲击值为10J / cm 2以上，厚度为5.0〜9.0mm。

公开(公告)号：US20160003281A1

公开(公告)日：2016-01-07

申请号：US14793651

申请日：2015-07-07

Applicant: Physical Systems, Inc.

Inventor： Charles G. Hutter, III

IPC: F16B23/00 ,  F16B37/00 ,  B21H3/02 ,  B21D22/28 ,  C21D8/10 ,  C21D9/00 ,  C21D6/02 ,  C21D1/26 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/46 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  F16B35/04

CPC classification number: F16B23/00 ,  B21D53/24 ,  B21H3/02 ,  B21H3/04 ,  B21K1/56 ,  C21D1/26 ,  C21D6/02 ,  C21D8/105 ,  C21D9/0093 ,  C21D2261/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/42 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  F16B23/0046 ,  F16B23/0053 ,  F16B23/0061 ,  F16B23/0092 ,  F16B33/008 ,  F16B35/00 ,  F16B35/04 ,  F16B35/041 ,  F16B37/00 ,  F16B37/02

Abstract: A hollow screw and related process of making is provided, wherein the hollow screw is formed from a generally circular corrosion resistant stainless steel disk cut from flat roll stock. The hollow screw includes a head and an elongated and hollow shaft having a wall thickness between about 0.2 to about 0.7 millimeters extending therefrom and defining a shank portion and a threaded portion having a plurality of threads thereon with a rotational drive mechanism configured to facilitate tightening via the threads. The process involves annealing to soften the stamped hollow screw, followed by thread rolling, and then age hardening the hollow screw. As such, the resultant hollow screw is relatively lightweight, about 50% the mass of a solid core screw made from the same material, with a sufficient thread strength to meet most aerospace applications and contributes to important aircraft fuel economy.

Abstract translation: 提供了一种中空螺丝及相关的制造方法，其中中空螺杆由从扁平轧辊原料切割的大致圆形的耐腐蚀不锈钢盘形成。 中空螺杆包括头部和细长的空心轴，其具有从其延伸的约0.2至约0.7毫米的壁厚，并且限定了柄部分和螺纹部分，其上具有多个螺纹，旋转驱动机构构造成便于紧固通过 线程。 该过程包括退火以软化冲压的中空螺杆，随后进行螺纹滚压，然后对中空螺钉进行老化硬化。 因此，所得到的中空螺杆相对较轻，由相同材料制成的实芯螺杆的质量约为50％，具有足够的螺纹强度以满足大多数航空应用并且有助于重要的飞机燃料经济性。