Application of Response Surface Methodolody to Prediction of Dilution in Plasma Transferred Arc Hardfacing of Stainless Steel on Carbon Steel

Balasubramanian, V.; Lakshminarayanan, A.K.; Varahamoorthy, R.; Babu, S. Ramesh

doi:10.1016/s1006-706x(09)60009-1

Cited by 77 publications

(32 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, considering the several possible sets of process variables, it is relatively difficult to find the best welding parameters to predict and reach appropriate weld bead characteristics. Based on what is suggested in the literature [5,10,26,31], to reach appropriate weld layer geometry, the value of reinforcement should be the maximum, while the values of penetration and dilution should be the minimum. …”

Section: Weld Bead Measurements and Optimum Process Parametersmentioning

confidence: 99%

“…By means of this method, layers with different thicknesses and a strong metallurgical bond to the substrate can be produced. In addition, it has high productivity and ability to automation for weld overlay applications [1,5]. In addition, in the PTA method, the value of dilution can be kept at a minimum, and by adjusting the feeding rate a sound weld bead is achievable [3,6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metallurgical Characterization of a Weld Bead Coating Applied by the PTA Process on the D2 Tool Steel

Tahaei

Vazquez²,

Merlin

et al. 2016

Soldag. insp.

View full text Add to dashboard Cite

Abstract:In this investigation, a nickel-base powder mixed with tungsten carbide particles was applied by Plasma Transferred Arc welding (PTA) on the surface of the D2 cold work tool steel to improve surface quality and to extend its lifetime during applications. The Design of Experiment (DoE) method was applied to obtain the appropriate combination of hardfacing parameters and to run the minimum number of tests. Current, travel speed and preheat were considered as variable parameters. These parameters are important to reach a final layer with an appropriate bead geometry accompanied with good metallurgical properties. All samples were prepared for metallurgical investigations and the effect of process parameters on the weld bead geometry was considered. For each experiment run, weld bead geometry parameters were measured including dilution, penetration and reinforcement. Microstructures and the distribution of tungsten carbide particles after welding were analyzed by Optical Microscopy (OM) and Scanning Electron Microscopy (SEM) equipped with an EDS microprobe. In addition, hardness tests were performed to evaluate the mechanical properties of the weld bead layers. Finally, among all the experiments, the best sample with appropriate bead geometry and microstructure was selected.

show abstract

Section: Weld Bead Measurements and Optimum Process Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metallurgical Characterization of a Weld Bead Coating Applied by the PTA Process on the D2 Tool Steel

Tahaei

Vazquez²,

Merlin

et al. 2016

Soldag. insp.

View full text Add to dashboard Cite

show abstract

“…However, the properties and the quality of deposits are strongly dependent on the dilution of the substrate promoted by the PTA process. Low dilution provides coatings with similar chemical composition to the added metal powder, condition for achieving enhanced mechanical properties, wear and oxidation resistance [9]. To avoid adhesion problems and, therefore, not to compromise the performance of molds in service, it is common to increase the dilution through the change of the most relevant deposition parameters even if the mechanical properties, wear and oxidation resistance are diminished.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Effect of the substrate dilution on the room and high temperature tribological behaviour of Ni-based coatings deposited by PTA on grey cast iron

Fernandes¹,

Polcar²,

Loureiro³

et al. 2015

Surface and Coatings Technology

View full text Add to dashboard Cite

In the present investigation the effect of the substrate dilution on room and high temperature (550 and 700 ºC) tribological behaviour of nickel based hardfaced coating deposited by plasma transferred arc onto a grey cast iron was investigated and compared to the uncoated grey cast iron. At room temperature, the wear loss of coatings was independent of the substrate dilution and similar to the grey cast iron. At high temperatures, coating produced with high dilution displayed the highest wear resistance between all the samples. This is attributed to the formation of a protective tribo-layer resulting from the agglomeration of a high amount of oxide debris due to its lower oxidation resistance when compared to the sample produced with low dilution.

show abstract

“…O autor, para eliminar as partículas não fundidas dos depósitos preliminares procurou-se incrementar a energia de soldagem através do aumento da corrente de 100A para 160 A, porém Ribeiro, verificou que o aumento da energia não foi o suficiente para eliminar as partículas não fundidas, mas reduziu em média aproximadamente 65% a sua quantidade, porém produziu diluição excessiva. Em outro trabalho verificaram níveis baixos de corrente (abaixo de 150 A) proporcionaram incompleta fusão do pó e falta de penetração na deposição de aço inoxidável 316L em aço carbono [23]. Desta forma, os resultados obtidos nesta pesquisa corroboram com resultados já obtidos na lieratura, sendo que o nível de pós não fundidos foi relativamente pequeno em comparação com Ribeiro que realizou soldagens com taxa de alimentação de pó bem menor, em torno de 10 g/min.…”

Section: Avaliação Dounclassified

Avaliação do Efeito da Energia de Soldagem na Deposição de Aço Inoxidável Superduplex pelo Processo Plasma Pó

et al. 2015

View full text Add to dashboard Cite

Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution Non-Commercial, que permite uso, distribuição e reprodução em qualq'uer meio, sem restrições desde que sem fins comerciais e que o trabalho original seja corretamente citado.Recebido: 03 Mar., 2015 Aceito: 29 Jun., 2015 E-mail: nunesbar@ibest.com.br (EBN)Resumo: O processo plasma pó é um dos mais recentes na aplicação de revestimento, possuindo como principal característica o controle da diluição. A soldagem de revestimento com aços inoxidáveis superduplex é uma interessante opção para a construção e o reparo de equipamentos para aplicações em ambiente de corrosão severa, permitindo alcançar as características desejadas:resistência à corrosão e boas propriedades mecânicas. Logo, este trabalho tem como objetivo avaliar o teor de ferrita no metal de solda e as características mecânicas através de perfis de microdureza em soldagens de revestimentos de dutos de aço C-Mn com deposição de UNS S32760 depositadas pelo processo Plasma Pó. Foram realizadas soldagens em dutos com deposição de AISD, empregando três níveis de energia de soldagem, variando a velocidade ou corrente de soldagem. Posteriormente, foi feita a análise de geometria e quantificação do teor de ferrita no metal de solda e levantamento do perfil de microdureza. A variação da energia de soldagem acarretou mudanças na geometria do cordão de solda, sendo que a alteração da corrente de soldagem proporcionou alterações mais significativas. O aumento da energia acarretou na redução do teor de ferrita do metal de solda. Em relação à microdureza, apenas a condição de maior nível de corrente de soldagem apresentou níveis bastante elevados de microdureza no metal de solda. Palavras-chave:Plasma; Superduplex; Revestimento. Evaluation of the Effect of the Heat Input in the Super Stainless Steel Deposition by Powder Plasma ProcessAbstract: The powder plasma process is one of the latest on weld overlay application and it has as main feature getting the dilution control. The weld overlay with the Super Duplex Stainless Steels is an interesting alternative for the construction and repair of equipment for applications in severe corrosive medium corrosion, allowing reach the desirable characteristics: good resistance corrosion and mechanical properties. Soon, the main objective of the present work is to evaluate the ferrite content in the weld metal and mechanical properties through microhardness profile in weld overlay of C-Mn pipes with UNS S32760 deposition by powder plasma process. Three welding energy levels, varying the speed or welding current, had been carried in the pipes with SDSS deposition. Later, it had carried geometry analysis and quantification of ferrite content in the weld metal and microhardness profile survey. The variation of welding current caused changes in the geometry of weld bead, being the change of welding current provided the most significant changes. Higher levels of heat input resulted in the reduction of the ferrite content of the weld meta...

show abstract

Application of Response Surface Methodolody to Prediction of Dilution in Plasma Transferred Arc Hardfacing of Stainless Steel on Carbon Steel

Cited by 77 publications

References 13 publications

Metallurgical Characterization of a Weld Bead Coating Applied by the PTA Process on the D2 Tool Steel

Metallurgical Characterization of a Weld Bead Coating Applied by the PTA Process on the D2 Tool Steel

Effect of the substrate dilution on the room and high temperature tribological behaviour of Ni-based coatings deposited by PTA on grey cast iron

Avaliação do Efeito da Energia de Soldagem na Deposição de Aço Inoxidável Superduplex pelo Processo Plasma Pó

Contact Info

Product

Resources

About