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    • 11. 发明专利
    • Member for heat treatment furnace excellent in carburization resistance
    • 热处理炉成员在耐热性方面表现出色
    • JP2012241219A
    • 2012-12-10
    • JP2011111148
    • 2011-05-18
    • Mmc Superalloy CorpMmcスーパーアロイ株式会社
    • SUGAWARA KATSUO
    • C22C19/05C22F1/00C22F1/10C23C10/02C23C10/48F23M5/00
    • PROBLEM TO BE SOLVED: To provide a member for a heat treatment furnace excellent in carburization resistance that is suitable for a member for a heat treatment furnace used in a carburizing environment, especially suitable for a material of a radiant tube.SOLUTION: The member for a heat treatment furnace is obtained by forming a Cr concentration layer and a Ni-Al alloy layer on the surface of a substrate comprising a Ni-base alloy. The Ni-base alloy constituting the substrate has composition containing 14.0-35.0 wt.% of Cr, 0.1-25.0 wt.% of Fe, not less than 0.1 wt.% and less than 1.5 wt.% of Al, 0.001-0.4 wt.% of Ti, 0.005-0.15 wt.% of C, 0.1-1.0 wt.% of Mn, and 0.1-1.0 wt.% of Si with the balance comprising Ni and unavoidable impurities. The Ni-Al alloy layer has a thickness of 10-200 μm and composition of 10-60 wt.% of Al with the balance comprising Ni and unavoidable impurities. The Cr concentration layer is formed immediately beneath the Ni-Al alloy layer.
    • 要解决的问题:提供一种适用于渗碳环境中特别适用于辐射管材料的用于热处理炉的部件的耐渗碳性优异的热处理炉的部件。 解决方案:通过在包括Ni基合金的基板的表面上形成Cr浓缩层和Ni-Al合金层来获得热处理炉的构件。 构成基板的Ni基合金具有含有14.0-35.0重量%的Cr,0.1-25.0重量%的Fe,不小于0.1重量%和小于1.5重量%的Al,0.001-0.4重量% ,Ti:0.005-0.15重量%,Mn:0.1-1.0重量%,Si:0.1-1.0重量%,余量包含Ni和不可避免的杂质。 Ni-Al合金层的厚度为10-200μm,组成为10-60重量%的Al,余量为Ni和不可避免的杂质。 Cr浓度层形成在Ni-Al合金层的正下方。 版权所有(C)2013,JPO&INPIT
    • 18. 发明专利
    • Manufacturing method of annular molding
    • 环形成型制造方法
    • JP2014188580A
    • 2014-10-06
    • JP2013069205
    • 2013-03-28
    • Mmc Superalloy CorpMmcスーパーアロイ株式会社
    • KIKUCHI HIROAKITAKIZAWA HIDEOISHIWARI YUJIOSONE ATSUSHI
    • B21K21/06B21B5/00B21H1/06
    • B21H1/06B21B5/00B21K1/28B21K1/761B21K3/00C21D7/13C21D9/0068C22F1/10
    • PROBLEM TO BE SOLVED: To provide a manufacturing method of an annular molding capable of stably and inexpensively manufacturing the annular molding being sufficiently high in mechanical strength by securing uniformity of a structure.SOLUTION: The manufacturing method of the annular molding comprises a forging step S2 of manufacturing a discoid forging body by forging an alloy element assembly and a ring rolling step S4 of manufacturing the annular molding by ring-rolling an annular intermediate body of forming a through-hole in the forging body. In the forging step S2, hot forging is executed by at least two times or more so as to fall within a range in which a stain rate is 0.5 sor less, an absolute value εθ1 of strain in the circumferential direction of the forging body is 0.3 or more, an absolute value εh of the strain in the height direction of the forging body is 0.3 or more, and the ratio εh/εθ1 of the mutual absolute values of these strains is 0.4 or more and 2.5 or less.
    • 要解决的问题:提供一种环形模制品的制造方法,其能够通过确保结构的均匀性而稳定且廉价地制造机械强度足够高的环形模制件。解决方案:环形模制件的制造方法包括锻造步骤S2 通过锻造合金元件组件制造盘状锻造体和通过在锻造体中旋转形成通孔的环形中间体来制造环形模制品的环形轧制步骤S4。 在锻造工序S2中,进行至少2次以上的热锻造,使其处于污染率为0.5以下的范围内,绝对值&等于(1) 锻造体为0.3以上,锻造体的高度方向的应变的绝对值等于或等于0.3,并且这些应变的相互绝对值之比为1 0.4以上且2.5以下。
    • 19. 发明专利
    • Ni-BASED ALLOY EXCELLENT IN CORROSION RESISTANCE TO FLUORIDE MOLTEN SALTS AS WELL AS DEVICE COMPONENT MADE OF THE SAME
    • 镍基合金在耐磨性方面优于氟化物,作为其设备组分的钼盐
    • JP2014145106A
    • 2014-08-14
    • JP2013013943
    • 2013-01-29
    • Mmc Superalloy CorpMmcスーパーアロイ株式会社
    • SUGAWARA KATSUO
    • C22C19/05C22F1/00C22F1/10G21C1/22G21C3/54
    • Y02E30/38
    • PROBLEM TO BE SOLVED: To provide a Ni-based alloy excellent in corrosion resistance to fluoride molten salts, as well as a device component that is made of the alloy and is used for a heat regenerator, a pump, piping or the like in a Th(thorium) molten-salt reactor.SOLUTION: A Ni-based alloy contains, by wt.%, Cr:6-8%, Mo:15-17%, Fe:0.05-2%, Mn:0.05-0.2%, Si:0.01-0.2%, V:0.001-0.08%, B:0.0001-0.01%, Mg:0.001-0.02%, N:0.001-0.04%, Al:0.005-0.1% and Ti:0.005-0.1% and further contains Cu:0.01-0.35% as required, and the balance is composed of Ni and inevitable impurities including C:0.01% or less. The Ni-based alloy is excellent in corrosion resistance to fluoride molten salts, and a device component made of the alloy is excellent in corrosion resistance to the fluoride molten salts.
    • 要解决的问题:提供对氟化物熔融盐的耐腐蚀性优异的Ni基合金以及由合金制成并用于热交换器,泵,管道等中的装置部件 Th(钍)熔盐反应器。解决方案:Ni基合金以重量%计含有Cr:6-8%,Mo:15-17%,Fe:0.05-2%,Mn:0.05-0.2% ,Si:0.01-0.2%,V:0.001-0.08%,B:0.0001-0.01%,Mg:0.001-0.02%,N:0.001-0.04%,Al:0.005-0.1%和Ti:0.005-0.1% 进一步含有Cu:0.01-0.35%,余量由Ni和不可避免的杂质组成,包括C:0.01%以下。 Ni基合金对氟化物熔融盐的耐腐蚀性优异,并且由该合金制成的器件部件对氟化物熔融盐的耐腐蚀性优异。