公开(公告)号：US20090074584A1

公开(公告)日：2009-03-19

申请号：US12210475

申请日：2008-09-15

Applicant: Kuniyoshi Nemoto ,  Kiyoshi Imai ,  Yomei Yoshioka ,  Masayuki Yamada ,  Reki Takaku ,  Takeo Suga ,  Masafumi Fukuda ,  Kenichi Okuno ,  Akihiro Takakuwa

Inventor： Kuniyoshi Nemoto ,  Kiyoshi Imai ,  Yomei Yoshioka ,  Masayuki Yamada ,  Reki Takaku ,  Takeo Suga ,  Masafumi Fukuda ,  Kenichi Okuno ,  Akihiro Takakuwa

IPC: B64C27/46 ,  C22C19/05

CPC classification number: C22C19/056 ,  C22C19/055 ,  F01D5/28 ,  F05C2201/0466 ,  F05D2220/31

Abstract: A Nickel-based alloy for a turbine rotor of a steam turbine contains C: 0.01 to 0.15, Cr: 18 to 28, Co: 10 to 15, Mo: 8 to 12, Al: 1.5 to 2, Ti: 0.1 to 0.6, B: 0.001 to 0.006, Ta: 0.1 to 0.7 in % by weight, and the remaining portion is composed of Ni and unavoidable impurities. The Nickel-based alloy is composed of the above-stated chemical composition range, and thereby, a mechanical strength improves while maintaining forgeability as same as a conventional steel.

Abstract translation: 用于汽轮机的涡轮转子的镍基合金含有C：0.01〜0.15，Cr：18〜28，Co：10〜15，Mo：8〜12，Al：1.5〜2，Ti：0.1〜0.6， B：0.001〜0.006，Ta：0.1〜0.7重量％，剩余部分由Ni和不可避免的杂质构成。 镍基合金由上述化学组成范围组成，从而与现有的钢一样保持锻造性，同时提高机械强度。

公开(公告)号：US09856735B2

公开(公告)日：2018-01-02

申请号：US13127517

申请日：2009-10-27

Applicant: Masayuki Yamada ,  Takao Inukai ,  Kiyoshi Imai ,  Shigekazu Miyashita ,  Kuniyoshi Nemoto ,  Reki Takaku

Inventor： Masayuki Yamada ,  Takao Inukai ,  Kiyoshi Imai ,  Shigekazu Miyashita ,  Kuniyoshi Nemoto ,  Reki Takaku

IPC: F01D5/06

CPC classification number: F01D5/06 ,  F05D2220/31 ,  Y10T29/49316

Abstract: A method of manufacturing a steam turbine rotor which includes an ultra-high temperature side portion in which ultra-high temperature steam flows and a high temperature side portion in which high temperature steam flows, the manufacturing method including the steps of: preparing a first electrode having a chemical composition corresponding to a chemical composition of a heat resistant alloy making up the ultra-high temperature side portion and a second electrode having a chemical composition corresponding to a chemical composition of the high temperature side portion; tentatively joining together joints of the electrodes, with the joints of the electrodes made smaller in cross sectional area than other electrode portions; subjecting the tentatively joined first and second electrodes to an ESR process to obtain an ESR ingot and forging the ingot into a shape of a rotor to obtain a rotor forging; and heat-treating the rotor forging to obtain a rotor blank and manufacturing the steam turbine rotor from the rotor blank.

公开(公告)号：US20100158682A1

公开(公告)日：2010-06-24

申请号：US12633468

申请日：2009-12-08

Applicant: Kuniyoshi NEMOTO ,  Kiyoshi Imai ,  Yomei Yoshioka ,  Masayuki Yamada ,  Shigekazu Miyashita ,  Takeo Suga ,  Takeo Takahashi ,  Kazutaka Ikeda

Inventor： Kuniyoshi NEMOTO ,  Kiyoshi Imai ,  Yomei Yoshioka ,  Masayuki Yamada ,  Shigekazu Miyashita ,  Takeo Suga ,  Takeo Takahashi ,  Kazutaka Ikeda

IPC: F01D25/24 ,  F01D9/02 ,  F01D25/00 ,  C22C19/05

CPC classification number: C22C19/056 ,  C22C19/055

Abstract: A Ni-based alloy for a casting part of a steam turbine having excellent high temperature strength, castability and weldability includes, in percentage by mass, 0.01 to 0.15 of C, 18 to 28 of Cr, 10 to 15 of Co, 8 to 12 of Mo, 1.5 to 2 of Al, 0.1 to 3 of Ti, 0.001 to 0.006 of B, 0.1 to 0.7 of Ta, and the balance of Ni plus unavoidable impurities.

Abstract translation: 具有优异的高温强度，浇铸性和焊接性的汽轮机的铸造部件用Ni基合金，以质量计含有C：0.01〜0.15，Cr：18〜28，Co：10〜15，Co：8〜12 的Mo，1.5〜2的Al，0.1〜3的Ti，0.001〜0.006的B，0.1〜0.7的Ta，余量的Ni加上不可避免的杂质。

公开(公告)号：US20100158681A1

公开(公告)日：2010-06-24

申请号：US12633273

申请日：2009-12-08

Applicant: Kuniyoshi NEMOTO ,  Kiyoshi IMAI ,  Yomei YOSHIOKA ,  Masayuki YAMADA ,  Shigekazu MIYASHITA ,  Takeo SUGA ,  Takeo TAKAHASHI ,  Kazutaka IKEDA

Inventor： Kuniyoshi NEMOTO ,  Kiyoshi IMAI ,  Yomei YOSHIOKA ,  Masayuki YAMADA ,  Shigekazu MIYASHITA ,  Takeo SUGA ,  Takeo TAKAHASHI ,  Kazutaka IKEDA

IPC: F01D9/02 ,  F01D5/28 ,  F16L9/02

CPC classification number: C22C19/055

Abstract: A Ni-based alloy for a forged part of a steam turbine having excellent high temperature strength, forgeability and weldability includes, in percentage by mass, 0.01 to 0.15 of C, 18 to 28 of Cr, 10 to 15 of Co, 8 to 12 of Mo, 1.5 to 2 of Al, 0.1 to 3 of Ti, 0.001 to 0.006 of B, 0.1 to 0.7 of Ta, and the balance of Ni plus unavoidable impurities.

Abstract translation: 具有优异的高温强度，锻造性和焊接性的蒸汽轮机的锻造部分的Ni基合金，以质量计含有C：0.01〜0.15，Cr：18〜28，Co：10〜15，Co：8〜12 的Mo，1.5〜2的Al，0.1〜3的Ti，0.001〜0.006的B，0.1〜0.7的Ta，余量的Ni加上不可避免的杂质。