Review on hardfacing as method of improving the service life of critical components subjected to wear in service

Okechukwu, Chijioke; Dahunsi, Olurotimi Akintunde; Oke, P. K.; Oladele, Isiaka Oluwole; Dauda, Mohammed

doi:10.4314/njt.v36i4.15

Cited by 15 publications

(13 citation statements)

References 12 publications

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“…Hardfacing consumables can be broadly categorised into four groups: iron-based, cobalt-based, nickel-based, and tungsten alloys [1,[12][13][14]18,[48][49][50]. They are commercially available in different forms.…”

Section: Hardfacing Consumablesmentioning

confidence: 99%

A Review on Hardfacing, Process Variables, Challenges, and Future Works

Tandon,

Li,

Pan

et al. 2023

Metals

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Hardfacing is an efficient and economical surfacing technique widely used by heavy industries to remediate worn components in service or to enhance the component’s wear characteristics components prior to use. Efficient hardfacing for any targeted application requires precise consideration and understanding of the deposition process, consumables, and substrates. It is also essential to understand the process variables and issues that can occur during the deposition processes, such as dilution and defects in the deposit, including residual stress-induced cracking. Significant research has been published over many years on several aspects of hardfacing, primarily focusing on abrasive wear, corrosion, and impact characterisation using different welding methods and alloy compositions. This paper primarily focuses on reviewing the prior hardfacing literature to systematically summarise the considerations and selection criteria for hardfacing processes and materials. It also presents a discussion on key process variables, such as welding parameters and number of surfacing layers, highlighting their influences during the hardfacing deposition procedure. This paper further discusses issues and challenges in hardfacing practices, such as dilution and cracking. One significant issue investigated is the thermal damage to high-strength steel substrates, with the measurement and characterisation of the damage being key elements. The focus of this investigation is to discuss the optimisation of hardfacing high-strength steel substrates and to communicate potential research areas and prospective applications in the hardfacing industry.

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Section: Hardfacing Consumablesmentioning

confidence: 99%

A Review on Hardfacing, Process Variables, Challenges, and Future Works

Tandon,

Li,

Pan

et al. 2023

Metals

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“…Spots size depends on the size of the abrasive. The finer the abrasive, the smaller the distance between spots [34,35,37].…”

Section: Pattern Of Hardfacing Layermentioning

confidence: 99%

“…The percentage of weld metal diffusion inside base metal called dilution in hardfacing. The dilution increases with increase in welding current and depends upon the heat input and chemical composition of the electrode and base metal weld deposit [37,38].…”

Section: Dilution In Hardfacing Techniquementioning

confidence: 99%

Hardfacing With Saw Method on Mild Steel – A Critical Review

Singh¹,

Shukla²

2018

IJTRS

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Life of any machine elements depends on its wear out rate. Most of working components are fracture and reduce its dimension, due to wear. The main reason of wear out any mechanical component is abrasion, impact, metallic (metal to metal) heat, corrosion etc. Large number of researchers performed experiments on different machines and equipment with different life extension technology, but few of them focused on hard-facing coating technology. Economically use of hard-facing technique depends on type of material used and its chemical composition. Carbon and chromium are the major elements which are used in hard-facing method. It was found that by varying the percentage of carbon and chromium, corrosion and wear resistance can be enhanced. In this paper an attempt has been made to review different hard-facing techniques and materials used for the same and the current research being done.

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“…Hardfacing is the application of a layer of metal to the surface of a workpiece or product by fusion welding [8].…”

Section: Introductionmentioning

confidence: 99%

Determination of Optimal Hardfacing Modes for Recovering Electric Motor Shafts

2023

Teh. vjesn.

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The research aims to determine the optimal modes of hardfacing when restoring the shafts of electric motors, taking into account the resulting hardness of the deposited layer for further machining. When conducting a full-scale experiment on hardfacing, samples (200 × 100 × 10 mm) of steel 3 were used, which were preliminarily ground. For hardfacing, such hardfacing materials were used as 1/S -7018, Sv-08G2S.The advantages and disadvantages of various surfacing methods are established. The hardness values of the deposited layer with material 1/S -7018.1 were determined in manual hardfacing, with Sv08G2S material -in semi-automatic hardfacing in a protective gas environment (CO2 -100%), with Sv-08G2S material -automatic surfacing under the layer flux. It has been established that the most effective and economical method of surfacing during the restoration of electric motor shafts is a semi-automatic method in a carbon dioxide environment. Regression analysis was used to build a mathematical model for determining the optimal hardfacing modes, taking into account the hardness of the deposited layer. The correlation coefficients are determined, which indicate a strong linear relationship between the hardness of the deposited layer and such technological parameters as current strength, welding arc voltage, and effective power. For the first time, a mathematical model was obtained for the dependence of the hardness of the deposited layer on the technological parameters of the coating -current strength, voltage, and arc power. The existence of a connection between the technological parameters of surfacing has been established.

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Review on hardfacing as method of improving the service life of critical components subjected to wear in service

Cited by 15 publications

References 12 publications

A Review on Hardfacing, Process Variables, Challenges, and Future Works

A Review on Hardfacing, Process Variables, Challenges, and Future Works

Hardfacing With Saw Method on Mild Steel – A Critical Review

Determination of Optimal Hardfacing Modes for Recovering Electric Motor Shafts

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