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公开(公告)号：WO1996000312A1
公开(公告)日：1996-01-04
申请号：PCT/IB1995000512
申请日：1995-06-23
Applicant: INGERSOLL-DRESSER PUMP COMPANY
Inventor： INGERSOLL-DRESSER PUMP COMPANY , McCAUL, Colin , FUMAGALLI, Vincenzo
IPC: C22C38/38
CPC classification number: F04D29/2277 , C22C38/38 , F05C2201/90
Abstract: A fluid impeller for applications requiring superior cavitation erosion resistance. The impeller has a body fabricated from a castable metastable austenitic steel alloy which has a chemical composition in the range according to table (I), the balance comprising iron and impurities. The preferred range is 17.5-18.5 % chromium, 0.5-0.75 % nickel, 0.45-0.55 % silicon, 0.2-0.25 % nitrogen, 15.5-16.0 % manganese and 0.1-0.12 % carbon. Quantitative testing has shown cavitation resistance of four to six times that of standard boiler feed pump materials. A method for making cavitation resistant fluid impellers is also disclosed.
Abstract translation: 用于需要优异的抗气蚀侵蚀性能的流体叶轮。 叶轮具有由可浇铸的亚稳态奥氏体钢合金制成的主体，其具有根据表（I）的范围的化学组成，余量包括铁和杂质。 优选的范围是17.5-18.5％的铬，0.5-0.75％的镍，0.45-0.55％的硅，0.2-0.25％的氮，15.5-16.0％的锰和0.1-0.12％的碳。 定量试验显示，空化抗性是标准锅炉给水泵材料的四到六倍。 还公开了一种制造抗气蚀的流体叶轮的方法。
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2.发明公开
公开(公告)号：EP0769077A1
公开(公告)日：1997-04-23
申请号：EP95921944.0
申请日：1995-06-23
Applicant: Ingersoll-Dresser Pump Company
Inventor： McCAUL, Colin , FUMAGALLI, Vincenzo
CPC classification number: F04D29/2277 , C22C38/38 , F05C2201/90
Abstract: A fluid impeller for applications requiring superior cavitation erosion resistance. The impeller has a body fabricated from a castable metastable austenitic steel alloy which has a chemical composition in the range according to table (I), the balance comprising iron and impurities. The preferred range is 17.5-18.5 % chromium, 0.5-0.75 % nickel, 0.45-0.55 % silicon, 0.2-0.25 % nitrogen, 15.5-16.0 % manganese and 0.1-0.12 % carbon. Quantitative testing has shown cavitation resistance of four to six times that of standard boiler feed pump materials. A method for making cavitation resistant fluid impellers is also disclosed.
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3.发明授权
公开(公告)号：EP0769077B1
公开(公告)日：1998-05-20
申请号：EP95921944.5
申请日：1995-06-23
Applicant: Ingersoll-Dresser Pump Company
Inventor： McCAUL, Colin , FUMAGALLI, Vincenzo
CPC classification number: F04D29/2277 , C22C38/38 , F05C2201/90
Abstract: A fluid impeller for applications requiring superior cavitation erosion resistance. The impeller has a body fabricated from a castable metastable austenitic steel alloy which has a chemical composition in the range according to table (I), the balance comprising iron and impurities. The preferred range is 17.5-18.5 % chromium, 0.5-0.75 % nickel, 0.45-0.55 % silicon, 0.2-0.25 % nitrogen, 15.5-16.0 % manganese and 0.1-0.12 % carbon. Quantitative testing has shown cavitation resistance of four to six times that of standard boiler feed pump materials. A method for making cavitation resistant fluid impellers is also disclosed.
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