Nuovo Pignone Srl

Frigel Firenze S.p.a.

Riccardo Paoletti

Marco Romanelli

Marco Anselmi

Massimo Giannozzi

Filippo Cappuccini

Filippo Dorin

Stefania Stramare

Alessio Bandini

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 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

The convector includes at least one finned tube bundle () in the tubes of which a fluid to be cooled is made to circulate and at least one fan () producing an air flow that strikes the outside of said finned tubes. The convector includes an adiabatic chamber () through which a air flow (F) passes, positioned upstream of the tube bundle (), inside which water is nebulized and vaporized. The adiabatic chamber () is defined by side walls () and by at least two evaporation honeycomb fill packs ().

Convector for cooling of a fluid circulating in a pipe

Growing community of inventors

Florence, Italy

Riccardo Paoletti