Establishing the cause of failure in continuous casting rolls

Hadizadeh, B.; Bahrami, Abbas; Eslami, A.; Abdian, K.; Araghi, Maryam; Etezazi, M.

doi:10.1016/j.engfailanal.2019.104346

Cited by 8 publications

(2 citation statements)

References 13 publications

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“…This certainly has positive implications for the system reliability and service life of a gas turbine. Lessons learnt from a failure study will certainly be useful in planning failure mitigation strategies in similar plants/set-ups [21][22][23][24][25][26][27][28][29][30]. It will be shown that the failure, reported in this study, is a corrosion-fatigue failure.…”

Section: Introductionmentioning

confidence: 68%

Corrosion-Fatigue Failure of Gas-Turbine Blades in an Oil and Gas Production Plant

et al. 2020

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This paper investigates the root cause of a failure in gas-turbine blades, made of Nimonic-105 nickel-based superalloy. The failure was reported in two blades in the second stage of a turbine-compressor of a gas turbine in the hot section. Two failed blades were broken from the root and from the airfoil. The failure took place after 20 k h of service exposure in the temperature range 700–850 °C, with the rotating speed being in the range 15,000–16,000 rpm. The microstructures of the failed blades were studied using optical/electron microscopes. Energy dispersive X-ray spectroscopy (EDS) was employed for phase identification. Results showed that failure first initiated from the root. The dominant failure mechanism in the root was concluded to be corrosion-fatigue. The failure scenario was suggested based on the results obtained.

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Section: Introductionmentioning

confidence: 68%

Corrosion-Fatigue Failure of Gas-Turbine Blades in an Oil and Gas Production Plant

et al. 2020

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“…In continuous casting, the mould bending moon surface of the continuous casting to the final billet complete solidification, the segmented rollers at positions from meniscus of the mould to the final solidification are subjected to various stresses such as the drum belly force, the alternating thermal stress, the high-temperature billet contact heating and the frictional force [1][2][3]. The harsh working environment can easily lead to the failure of the segmented rollers and stainless steel welding electrode overlay process was usually used for segmented rollers repairing.…”

Section: Introductionmentioning

confidence: 99%

Research on microstructure and properties of 3D plasma spray welding repair layer of continuous casting segmented rollers

Li,

Zhou,

Meng

et al. 2023

Mater. Res. Express

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In this paper, the Fe-Cr-Ni-Si powder was used in a 3D plasma spray welding machine to perform spray welding repair tests on continuous casting segmented rollers for service life improvement. The phase composition, hardness distribution, abrasion resistance and thermal stability of the spray welding layer were analyzed. Results indicated that the spray welding layer produced by 160 A welding current was more uniform and was with finer organization. The main phase zone was a single γ-Fe and the fusion zone was metallurgically combined with the base metal in a planar crystal manner. The hardness of the spray welding layer was the maximum when the welding current was 160 A. The abrasion resistance for each position of the spray welding layer was uniform. The γ-Fe phase zone decreased and the α-Fe phase zone increased with reduction of average hardness after the thermal stability test. In industrial tests, the optimum spray welding parameters were verified and the service life of the continuous casting segmented rollers with spray welding was 2 longer than rollers using surfacing welding process.

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Effect of Heat Treatment on Microstructure, Mechanical Properties, and Corrosion Performance of 410NiMo Super Martensitic Stainless Steel Cladded on 21CrMoV5-11 by Submerged Arc Welding Process

et al. 2023

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Establishing the cause of failure in continuous casting rolls

Cited by 8 publications

References 13 publications

Corrosion-Fatigue Failure of Gas-Turbine Blades in an Oil and Gas Production Plant

Corrosion-Fatigue Failure of Gas-Turbine Blades in an Oil and Gas Production Plant

Research on microstructure and properties of 3D plasma spray welding repair layer of continuous casting segmented rollers

Effect of Heat Treatment on Microstructure, Mechanical Properties, and Corrosion Performance of 410NiMo Super Martensitic Stainless Steel Cladded on 21CrMoV5-11 by Submerged Arc Welding Process

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