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    Method for producing carbonitrided member
    55.
    发明授权
    Method for producing carbonitrided member 有权
    生产碳氮共渗构件的方法

    公开(公告)号：US09062364B2

    公开(公告)日：2015-06-23

    申请号：US13415198

    申请日：2012-03-08

    Applicant: Naoyuki Sano ,  Masayuki Horimoto ,  Yoshinari Okada ,  Masaki Amano ,  Akihito Ninomiya

    Inventor： Naoyuki Sano ,  Masayuki Horimoto ,  Yoshinari Okada ,  Masaki Amano ,  Akihito Ninomiya

    IPC: C23C8/32 ,  C23C8/02 ,  C21D1/25 ,  C21D1/74 ,  C21D7/06 ,  C21D9/32 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C23C8/22 ,  C23C8/80

    CPC classification number: C23C8/02 ,  C21D1/25 ,  C21D1/74 ,  C21D7/06 ,  C21D9/32 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C23C8/22 ,  C23C8/32 ,  C23C8/80

    Abstract: A method for producing a carbonitrided member comprising the steps of carburizing a steel part having a composition of, by mass percent, C: 0.10 to 0.35%, Si: 0.15 to 1.0%, Mn: 0.30 to 1.0%, Cr: 0.40 to 2.0%, S: 0.05% or less with the balance being Fe and impurities in a carburizing atmosphere of 900 to 950° C. The carburized steel part is carbonitrided in a carbonitriding atmosphere with the temperature of 800 to 900° C. and the nitrogen potential of 0.2 to 0.6%. The carbonitrided steel part is qhenched and then shot peened. The shot peening treatment may be further performed while heating to a temperature not higher than 350° C. or immediately after heating to a temperature not higher than 350° C. After quenching, the shot peening treatment may be further performed after tempering in the temperature range exceeding 250° C. and not higher than 350° C.

    Abstract translation: 碳氮共渗构件的制造方法，其特征在于，将以质量％计含有C：0.10〜0.35％，Si：0.15〜1.0％，Mn：0.30〜1.0％，Cr：0.40〜2.0 ％，S：0.05％以下，余量为渗碳气氛中的Fe和杂质为900〜950℃。渗碳钢部分在碳氮共渗气氛中碳氮共混，温度为800〜900℃，氮势 为0.2〜0.6％。 将碳氮共渗钢部分进行复层，然后喷丸硬化。 可以在加热至不高于350℃的温度或加热至不高于350℃的温度之后进一步进行喷丸硬化处理。淬火后，可以在温度回火之后进一步进行喷丸硬化处理 范围超过250℃，不高于350℃

    METHODS OF PREPARING A SURFACE OF A CAST ZIRCONIUM ALLOY SUBSTRATE FOR OXIDATION
    57.
    发明申请
    METHODS OF PREPARING A SURFACE OF A CAST ZIRCONIUM ALLOY SUBSTRATE FOR OXIDATION 有权
    制备氧化锆钛合金基材表面的方法

    公开(公告)号：US20150107721A1

    公开(公告)日：2015-04-23

    申请号：US14061466

    申请日：2013-10-23

    Applicant: David L. Walker

    Inventor： David L. Walker

    IPC: C23C8/02 ,  C22F1/18 ,  C23C8/10

    CPC classification number: C23C8/02 ,  C22F1/186 ,  C23C8/10

    Abstract: Methods of preparing a surface of a cast zirconium alloy substrate for oxidation, the method including hot isostatic pressing a cast substrate of near shape dimensions, heating the cast substrate, machining the cast substrate to desired shape dimensions, and treating the surface of the cast substrate to accept an oxide layer. in some examples, treating the surface of the cast substrate may include polishing the surface, peening the polished surface, and finishing the peened surface. Additional or alternative examples may include heat treating a cast substrate of near shape dimensions to define a homogenized grain structure within the cast substrate, machining the heat treated cast substrate to desired shape dimensions, and surface treating the machined cast substrate to modify its structure to define a recrystallized modified grain structure defining a reduced grain boundary size.

    Abstract translation: 制备用于氧化的铸造锆合金基材的表面的方法，所述方法包括热等静压压制形状尺寸的铸造基材，加热铸造基材，将铸造基材加工成所需的形状尺寸，以及处理铸造基材的表面 以接受氧化物层。 在一些实例中，处理铸造基材的表面可以包括抛光表面，硬化抛光表面，并且完成喷丸表面。 附加的或替代实例可以包括热处理接近形状尺寸的铸造基底以限定铸造基底内的均质化晶粒结构，将热处理的铸造基底加工成所需的形状尺寸，以及对加工的铸造基底进行表面处理以修改其结构以限定 限定晶界尺寸减小的再结晶改性晶粒结构。

    PROCESS FOR PRODUCING CARBONITRIDED PART
    60.
    发明申请
    PROCESS FOR PRODUCING CARBONITRIDED PART 审中-公开
    生产碳化氢零件的工艺

    公开(公告)号：US20140366992A1

    公开(公告)日：2014-12-18

    申请号：US14320690

    申请日：2014-07-01

    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION ,  HONDA MOTOR CO., LTD.

    Inventor： Naoyuki SANO ,  Masayuki HORIMOTO ,  Yoshinari OKADA ,  Masaki AMANO ,  Akihito NINOMIYA

    IPC: C23C8/32 ,  C23C8/80

    CPC classification number: C23C8/32 ,  C21D1/06 ,  C21D1/18 ,  C21D9/32 ,  C21D2211/004 ,  C21D2221/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/22 ,  C23C8/02 ,  C23C8/22 ,  C23C8/80

    Abstract: A process for producing a carbonitrided part comprising the steps of preparing a base steel part, having a composition comprising, in mass percent, C: 0.10 to 0.24%, Si: 0.15 to 1.0%, Mn: 0.30 to 1.0%, Cr: 0.40 to 2.0%, S: 0.05% or less, with the balance being Fe and impurities and performing the following steps 1-4 in sequence. Step 1 is carburizing the base steel part under a carburizing atmosphere at a temperature of 900 to 950° C. Step 2 is carbonitriding the base steel part carburized according to step 1 under a carbonitriding atmosphere at a temperature of 800 to 900° C. with a nitrogen potential of 0.2 to 0.6%. Step 3 is quenching the base steel part carbonitrided according to step 2. Step 4 is tempering the base steel part quenched according to step 3 at a temperature of more than 250° C. to not more than 350° C.

    Abstract translation: 一种碳氮共渗制造方法，其特征在于，包括以质量％计含有C：0.10〜0.24％，Si：0.15〜1.0％，Mn：0.30〜1.0％，Cr：0.40的组成的基体钢部分 至2.0％，S：0.05％以下，余量为Fe和杂质，依次进行以下步骤1-4。 步骤1是在900〜950℃的渗碳气氛下对基体钢部分进行渗碳。步骤2在碳氮共渗气氛下，在800〜900℃的温度下，将根据步骤1渗碳的基体钢部分碳氮共渗， 氮势为0.2〜0.6％。 步骤3是对根据步骤2进行碳氮共混的基体钢进行淬火。步骤4是在大于250℃至不高于350℃的温度下对根据步骤3淬火的基础钢部分进行回火。

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