Nuovo Pignone Srl

Nuovo Pignone Spa

Marco Romanelli

Marco Anselmi

Riccardo Paoletti

Manuele Bigi

Luciano Mei

Leonardo Tognarelli

Massimo Giannozzi

Duccio Fioravanti

Eugenio Giorni

Filippo Cappuccini

Stefania Stramare

Alessio Bandini

Marco Manetti

Eugenio Del Puglia

Massimiliano Buccioni

Domenico Di Pietro

Emanuele Pietrangeli

Marco Manettti

Duccio Fioraventi

A method for preventing corrosion of an impeller-shaft assembly of a turbomachine comprises the steps of assembling an impeller on a shaft in order to define an impeller-shaft assembly; plating the assembly by inserting the assembly into a plating bath; and coating at least a first predefined surface on the impeller and a second predefined surface on the shaft wherein the coating step is performed by spraying the predefined surfaces.

Method for preventing the corrosion of an impeller-shaft assembly of a turbomachine

A magnetic bearing comprising a stator magnetic circuit secured to a stationary support device, the stator magnetic circuit comprising at least one coil and a ferromagnetic body placed in a protective annular support, the protective annular support leaving uncovered a surface of the ferromagnetic body and a surface of the at least one coil. The bearing also comprises at least one annular plug placed on the surface of the at least one coil which is left uncovered by the protective annular support, and the annular plug and the surface of the ferromagnetic body which is left uncovered by the protective annular support are coated by a protective layer.

Magnetic bearing and rotary machine comprising such a bearing

A method for preventing corrosion in a component of a turbo-machine having a metal substrate made of carbon steel, low alloy steel and stainless steel includes: a first deposition step of depositing a first metallic layer on the substrate by electroplating; a second deposition step of depositing at least a second layer of a nickel alloy on the first layer by electroless plating; at least one thermal treatment step after the deposition steps, said thermal treatment being applied at a temperature and for a time depending on the overall thickness of the layers, the value of said temperature being directly proportional to the thickness, the value of said time being inversely proportional to the temperature.

Method for preventing corrosion and component obtained by means of such

System, computer software and method for determining a susceptibility to reheat cracking of a sample of material, which includes a welded area. The method includes measuring a length of the sample, applying a first stress to the sample to achieve a predetermined elongation of the sample, exposing the elongated sample to a predefined heat treatment, applying a second stress to the sample until the sample breaks at least into two different pieces, and determining the susceptibility of the broken sample to reheat cracking.

Method for determining reheat cracking susceptibility

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Florence, Italy

Marco Romanelli