Effect of different operating parameters on the slurry erosion behavior of cryo-treated hydro-turbine steel

2020 ◽  
Vol 28 ◽  
pp. 1429-1438
Author(s):  
Munish Kumar ◽  
Hazoor Singh Sidhu ◽  
Buta Singh Sidhu
Keyword(s):  
Operating Parameters ◽  
Slurry Erosion ◽  
Erosion Behavior ◽  
Hydro Turbine ◽  
Turbine Steel

Slurry erosion behavior of plasma sprayed coating on turbine steel

2019 ◽  
Vol 71 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Sarbjeet Kaushal ◽  
Satnam Singh
Keyword(s):  
Abrasive Wear ◽  
Rotational Speed ◽  
Silica Sand ◽  
Average Particle ◽  
Slurry Erosion ◽  
Content Type ◽  
Erosion Behavior ◽  
Turbine Steel ◽  
Sprayed Coating ◽  
Plasma Sprayed

PurposeThe purpose of this paper is to study the effect of slurry erosion at different parameters on plasma sprayed Cr3C2coated 13Cr4Ni turbine steel and compare the results of coated steel with bare steel.Design/methodology/approachCr3C2+ 25NiCr coating was successfully developed on 13Cr4Ni turbine steel using plasma spraying method. The slurry erosion test was performed using a simulated erosion testing rig. The commercially available silica sand was used as abrasive media and the effect of concentration (ppm), average particle sizes and rotational speed on the slurry erosion behavior were studied at 300 and 900 impact angles. Developed coatings were characterized by scanning electron microscope, XRD, EDS and micro hardness tests and study of erosion wear.FindingsResults revealed that three times higher hardness of coatings was obtained because of the hard phases of chromium carbide and nickel carbide, which restricted the abrasive wear in comparison to uncoated steel. Lower abrasive wear was observed at 900 impact angle coupled with lower levels of slurry concentration and rotational speed. Further, it was observed that initially cumulative mass loss rate was high which gets stabilized after the surface become smooth and on exposing for higher periods. Overall results indicated that erosive wear was reduced significantly by the application of developed coating.Originality/valueThe developed plasma sprayed coating is very useful to enhance the service life of turbine steel by lowering the effect of slurry erosion.

scholarly journals On the role of grain size on slurry erosion behavior of a novel medium-carbon, low-alloy pipeline steel after induction hardening

Wear ◽  
2021 ◽  
pp. 203678
Author(s):  
Vahid Javaheri ◽  
Oskari Haiko ◽  
Saeed Sadeghpour ◽  
Kati Valtonen ◽  
Jukka Kömi ◽  
...  
Keyword(s):  
Grain Size ◽  
Pipeline Steel ◽  
Induction Hardening ◽  
Slurry Erosion ◽  
Medium Carbon ◽  
Erosion Behavior

An experimental and numerical study of slurry erosion behavior in a horizontal elbow and elbows in series

2021 ◽  
Vol 130 ◽  
pp. 105779
Author(s):  
Qiuchen Wang ◽  
Qiyu Huang ◽  
Nianrong Wang ◽  
Yunhao Wen ◽  
Xili Ba ◽  
...  
Keyword(s):  
Numerical Study ◽  
Slurry Erosion ◽  
Erosion Behavior ◽  
In Series

scholarly journals Superior Slurry Erosion Behavior of a Casting NiCoCrFeNb0.45 Eutectic High Entropy Alloy

2020 ◽  
Vol 33 (8) ◽  
pp. 1111-1116
Author(s):  
Jinling Lu ◽  
Zhenjiang Wang ◽  
Wei Wang ◽  
Kexuan Zhou ◽  
Feng He ◽  
...  
Keyword(s):  
High Entropy Alloy ◽  
Slurry Erosion ◽  
High Entropy ◽  
Erosion Behavior

Slurry Erosion Behavior of HVOF-Sprayed Amorphous Coating on Stainless Steel

2019 ◽  
Vol 8 (4) ◽  
pp. 462-471 ◽  
Author(s):  
S. Vignesh ◽  
V. Balasubramanian ◽  
K. Sridhar ◽  
D. Thirumalaikumarasamy
Keyword(s):  
Stainless Steel ◽  
Amorphous Coating ◽  
Slurry Erosion ◽  
Erosion Behavior

Mechanical properties and erosive behaviour of 10TiO2-Cr2O3 coated CA6NM turbine steel under accelerated conditions

2019 ◽  
Vol 16 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Khushdeep Goyal
Keyword(s):  
Mechanical Properties ◽  
Mass Loss ◽  
Average Particle Size ◽  
Average Particle ◽  
Slurry Erosion ◽  
Experimental Conditions ◽  
Content Type ◽  
Uncoated Steel ◽  
Erosion Test ◽  
Turbine Steel

Purpose This paper aims to evaluate the mechanical properties and slurry erosion behaviour of 10TiO2-Cr2O3 coated turbine steel. Design/methodology/approach Slurry erosion experiments were performed on the coated turbine steel specimens using slurry erosion test rig under accelerated conditions such as rotational speed, average particle size and slurry concentration. Surface roughness tester, Vickers microhardness tester and scanning electron microscope were used to analyse erosion mechanism. Findings Under all experimental conditions, 10TiO2-Cr2O3 coated steel showed better slurry erosion resistance in comparison with Al2O3 coated and uncoated steel specimens. Each experimental condition indicated a significant effect on the erosion rate of both coatings and uncoated steel. The surface analysis of uncoated eroded specimen revealed that plastic deformation, ploughing and deep craters formation were the reasons for mass loss, whereas microchipping, ploughing and microcutting were the reasons for mass loss of coated specimens. Originality/value The present investigation provides novel insight into the comparative slurry erosion performance of high velocity oxy fuel deposited 10TiO2-Cr2O3 and Cr2O3 coatings under various environmental conditions. To form modified powder, 10 Wt.% TiO2 was added to 90 Wt.% Cr2O3.

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