Estudo comparativo de três ligas austeníticas com cobalto resistentes à cavitação depositadas por plasma pulsado térmico

Will, C.; Capra, André Ricardo; Pukasiewicz, Anderson Geraldo Marenda; Chandelier, Joceli da Guia; Paredes, Ramón Sigifredo Cortés

doi:10.1590/s0104-92242010000100007

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…The mixture consisted of two commercial alloys: STELLITE 6, which is based on cobalt, has high cavitation resistance and is expensive, and 316L stainless steel, which has low cavitation resistance and is less expensive than STELLITE 6. As cobalt is essential for conferring high cavitation resistance [13][14][15] but also accounts for the high cost of alloys, another commercial alloy (referred to as C ALLOY here), which contains only 9.0% cobalt and has high cavitation resistance, was used as a reference. A STENOX mixture of 13% by weight STELLITE 6 and 87% by weight 316L stainless steel was therefore chosen to give a nominal 9.0% cobalt content.…”

Section: Alves Et Almentioning

confidence: 99%

Development of a Powder-feed Device and Procedures for the Application of an Experimental Alloy in Overhead PTA-P Welding

2015

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When they are damaged by cavitation, hydroelectric power plant turbine blades must be repaired using operations that could benefit from developments in welding technologies. In light of this, the LABSOLDA welding laboratory at the Federal University of Santa Catarina is making efforts to enhance the flexibility and robustness of the powder-fed plasma transferred arc (PTA-P) process so that it can be used in any welding position and with different powders. The use of consumables in powder form in PTA-P welding allows experiments to be carried out to develop an alloy with special properties suitable for use in generator repairs. To this end, the RV-F PF powder feeder, which can operate with consumables with non-standard morphologies and particle sizes, was developed. The feeder was required to provide a regular flow of consumable material in out-of-position welding operations without the need for high gas flow rates and regardless of the morphology or particle size of the consumables. The RV-F PF is shown to operate efficiently with materials whose properties differ greatly from those of standard consumables. It is also suitable for overhead PTA-P welding and provides a constant supply of filler material efficiently with normal gas flow rates. The welding tests carried out involved deposition of a mixture of two alloys and were followed by cavitation testing of the resulting coating.

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Section: Alves Et Almentioning

confidence: 99%

Development of a Powder-feed Device and Procedures for the Application of an Experimental Alloy in Overhead PTA-P Welding

2015

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Comparison of FeMnCrSi Cavitation Resistance Coatings Deposited by Twin-Wire Electric Arc and High-Velocity Oxy-Fuel Processes

et al. 2021

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Coating weld cavitation erosion resistance using austenitic stainless steel and cobalt alloys deposited by GMAW and CW-GMAW

Silva

Braga

Ferraresi

et al. 2022

J Braz. Soc. Mech. Sci. Eng.

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Estudo comparativo de três ligas austeníticas com cobalto resistentes à cavitação depositadas por plasma pulsado térmico

Abstract: Resumo A necessidade de diminuição dos tempos de parada e custos de manutenção de turbinas geradoras de energia elétrica tem motivado o desenvolvimento de novos materiais e processos de recuperação de áreas cavitadas. Atualmente diferentes processos automatizados

Cited by 4 publications

References 5 publications

Development of a Powder-feed Device and Procedures for the Application of an Experimental Alloy in Overhead PTA-P Welding

Development of a Powder-feed Device and Procedures for the Application of an Experimental Alloy in Overhead PTA-P Welding

Comparison of FeMnCrSi Cavitation Resistance Coatings Deposited by Twin-Wire Electric Arc and High-Velocity Oxy-Fuel Processes

Coating weld cavitation erosion resistance using austenitic stainless steel and cobalt alloys deposited by GMAW and CW-GMAW

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