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Comparison of the performance properties of commercially produced roller cone bit coatings Cover

Comparison of the performance properties of commercially produced roller cone bit coatings

Materials Science-Poland
Volume 41 (2023): Issue 1 (March 2023)
By:
Open Access
|Aug 2023

Figures & Tables

Fig 1.

Types of roller cone bits: (a) milled-tooth bits, (b) insert-tooth bits – Glinik Drilling Tools product catalog [2]
Types of roller cone bits: (a) milled-tooth bits, (b) insert-tooth bits – Glinik Drilling Tools product catalog [2]

Fig. 2.

Different types of teeth and arms reinforcements [2]. The arrows mark the locations of the overlays
Different types of teeth and arms reinforcements [2]. The arrows mark the locations of the overlays

Fig. 3.

The samples submitted for testing by Glinik Drilling Tool: (a) gas welding; (b) plasma transferred arc welding
The samples submitted for testing by Glinik Drilling Tool: (a) gas welding; (b) plasma transferred arc welding

Fig. 4.

Cross-section of the coating made by the gas weld surfacing
Cross-section of the coating made by the gas weld surfacing

Fig. 5.

Mapping of key elements of the gas weld surfacing layer
Mapping of key elements of the gas weld surfacing layer

Fig. 6.

Spherical and polyhedral particles in the gas weld surfacing
Spherical and polyhedral particles in the gas weld surfacing

Fig. 7.

SEM micrographs of overlay made by gas welding surface with EDS spot analysis
SEM micrographs of overlay made by gas welding surface with EDS spot analysis

Fig. 8.

Cross-section of the coating made by the PTA weld surfacing
Cross-section of the coating made by the PTA weld surfacing

Fig. 9.

Mapping of key elements of the PTA weld surfacing layer
Mapping of key elements of the PTA weld surfacing layer

Fig. 10.

The microstructure of the coating is made by PTA weld surfacing with the distinction of three zones occurring in the layer
The microstructure of the coating is made by PTA weld surfacing with the distinction of three zones occurring in the layer

Fig. 11.

SEM micrographs of overlay made by PTA surface with EDS spot analysis
SEM micrographs of overlay made by PTA surface with EDS spot analysis

Fig. 12.

Results of XRD analyses on sample cross-section made by gas weld surfacing
Results of XRD analyses on sample cross-section made by gas weld surfacing

Fig. 13.

Results of XRD analyses on sample cross-section made by PTA
Results of XRD analyses on sample cross-section made by PTA

Fig. 14.

Microhardness distribution on sample cross-section made by gas weld surfacing (0mm-joint)
Microhardness distribution on sample cross-section made by gas weld surfacing (0mm-joint)

Fig. 15.

Microhardness distribution on sample cross-section made by PTA weld surfacing (0mm-joint)
Microhardness distribution on sample cross-section made by PTA weld surfacing (0mm-joint)

Fig. 16.

Comparison of the impact test results of samples made by Gas welding and PTA
Comparison of the impact test results of samples made by Gas welding and PTA

Fig. 17.

Comparison of the relative abrasion resistance of samples made by gas welding and PTA
Comparison of the relative abrasion resistance of samples made by gas welding and PTA

HV 0_1 microhardness measurements

Basis (steel)MatrixStrengthening phase
Gas Welding
average567.01028.21699.8
SD23.660.6245.4
PTA
average352.6714.23707.6
SD26.7162.4237.2

EDS spot analysis of the areas in Figure 7 (weight %)

C-KFe-KNi-KCo-LW-M
Base(8)_pt12.22.60.8 94.4
Base(8)_pt23.51.6 0.294.7
Base(8)_pt31.83.50.3 94.4
Base(8)_pt42.92.2 0.694.3

EDS spot analysis of the areas in Figure 11(weight %)

C-KCr-KFe-KNi-KW-L
Base(49)pt16.60.31.518.473.2
Base(49)_pt23.60.20.913.881.6
Base(49)_pt35.90.20.78.884.5
Base(49)_pt44.30.20.912.681.9
Base(49)_pt53.80.31.114.979.9
Base(49)_pt63.70.20.916.079.2
Base(49)_pt75.4 0.1 94.3
Base(49)_pt85.4 0.2 88.9
DOI: https://doi.org/10.2478/msp-2023-0008 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 110 - 123
Submitted on: Apr 13, 2023
Accepted on: May 29, 2023
Published on: Aug 4, 2023
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
roller cone bit,
carbide coating,
mechanical properties,
gas welding,
plasma transferred arc welding
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2023 Sylwia Koczkodaj, Jaroslaw Mizera, Dorota Moszczynska, Joanna Zdunek, Magdalena Plocinska, Jacek Szpyrka, Marek Burkot, Mateusz Szpak, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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