Predicting the dilution of plasma transferred arc hardfacing of stellite on carbon steel using response surface methodology

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

doi:10.3365/met.mat.2008.12.779

Cited by 46 publications

(19 citation statements)

References 14 publications

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“…The experiments were conducted based on five factors, five level CCD matrix to optimize the experimental conditions. A. K. Lakshminarayan et al [29] predicted the Dilution of Plasma Transferred Arc Hardfacing of Stellite on Carbon Steel using Response Surface Methodology. CCD of second order was employed to establish the mathematical relationship of the response surface using the smallest possible number of experiments without loss of accuracy.…”

Section: Plasma Transferred Arc Welding (Ptaw)mentioning

confidence: 99%

Review on Application of Response Surface Method based Design of Experiments to Welding Processes

Prasad

Rao

2012

Journal for Manufacturing Science and Production

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Design of Experiment is one of the extensively used method for experimental study of many manufacturing processes in engineering. In welding, Design of Experiments are widely used to develop a mathematical relationship between the welding input parameters and the output variables of the weld joint in order to determine the welding input parameters that lead to the desired weld quality. In the present study, a review is made on Response Surface Method based Design of Experiments that have been employed for various welding processes by other researchers. This study predominantly focuses on the usage of Response Surface Method in Welding.

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Section: Plasma Transferred Arc Welding (Ptaw)mentioning

confidence: 99%

Review on Application of Response Surface Method based Design of Experiments to Welding Processes

Prasad

Rao

2012

Journal for Manufacturing Science and Production

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“…Esta última é realizada através da deposição de uma camada de material com características desejáveis em relação às propriedades mecânicas e microestrutura sobre um substrato, sendo um dos métodos de maior versatilidade e com obtenção de bons resultados [2]. O revestimento pode ser aplicado com objetivo de aumento de resistência ao desgaste, resistência à corrosão, resistência à elevadas temperaturas e carregamentos em relação ao metal base [3][4][5]. No entanto, existem muitos problemas na soldagem de revestimento por utilizar materiais dissimilares, sendo que as falhas acarretam prejuízos de milhões de reais, sendo essencial a seleção adequada de materiais e processo de soldagem, além de ajuste adequado de parâmetros [6].…”

Section: Nunes Et Alunclassified

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

et al. 2015

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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...

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“…The thickness of the coating layer can be increased by increasing the current without any cracks or pores in the interface and layer, but with the increase in arc current the dilution also increases which results in decrease in hardness and wear resistance [11,12]. The dilution in PTAW process usually varies between 5% and 20% for high deposition rate and it can be reduced up to zero percent at low deposition rate [13,14]. It has also been observed that the dilution is more sensitive to arc current and scanning speed than to powder feed rate [15].…”

Section: Introductionmentioning

confidence: 96%

An Experimental Investigation and Analysis of PTAW Process

Mandal

Kumar

Bhargava

et al. 2014

Materials and Manufacturing Processes

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Experiments are conducted to deposit SS304 L powders on SS316 plates by plasma transfer arc welding process with varying four input process parameters, namely scanning speed, powder feed rate, stand-off distance, and current. The effects of these four input process parameters on deposition geometry, dilution, and bead continuity are investigated in this study. Attempts have been made to explain the experimental results with only two compound parameters, ''energy deposition per length'' and ''powder deposition per length'' instead of four independent input process parameters. It is observed that the variation of dilution is very little when the scanning speed increases from 100 to 600 mm/min and other process parameters remain constant. When the powder feed rate increases and other parameters remain constant, initially the dilution decreases rapidly and attains a minimum value which do not change further with increase in powder feed rate. It is also observed that the dilution remains almost constant around 6-9% as the stand-off distance changes from 7 to 11 mm and other process parameters remain constant. The formation of nonuniform bead is found to be due to insufficient energy deposition per length per mass of supplied powder.

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Predicting the dilution of plasma transferred arc hardfacing of stellite on carbon steel using response surface methodology

Cited by 46 publications

References 14 publications

Review on Application of Response Surface Method based Design of Experiments to Welding Processes

Review on Application of Response Surface Method based Design of Experiments to Welding Processes

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

An Experimental Investigation and Analysis of PTAW Process

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