Wear and adhesion properties of a PVD duplex coated medium alloy steel for plungers in the oil and gas industry
A duplex coating consisting in plasma nitriding of V820 steel (Boehler®) and a CrAlN coating (Balinit©, Oerlikon Balzers) was designed to enhance wear properties of hydraulic fracture pumps plungers used in the O&G Industry. On subsequent reciprocating motions, pumped slurry (containing solid pa...
| Autores principales: | , , , , , |
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| Formato: | Documento de conferencia acceptedVersion |
| Lenguaje: | Inglés |
| Publicado: |
2021
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| Acceso en línea: | http://hdl.handle.net/20.500.12272/4735 |
| Aporte de: |
| id |
I68-R174-20.500.12272-4735 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Tecnológica Nacional |
| institution_str |
I-68 |
| repository_str |
R-174 |
| collection |
RIA - Repositorio Institucional Abierto (UTN) |
| language |
Inglés |
| topic |
Abrasive wear O&G plungers Hard coatings |
| spellingShingle |
Abrasive wear O&G plungers Hard coatings Brühl, Sonia Patricia Dalibón Bähler, Eugenia Laura Cabo, Amado Crimello, Pablo Aguirre, Luis Alberto Carfi, Guillermo Rodolfo Wear and adhesion properties of a PVD duplex coated medium alloy steel for plungers in the oil and gas industry |
| topic_facet |
Abrasive wear O&G plungers Hard coatings |
| description |
A duplex coating consisting in plasma nitriding of V820 steel (Boehler®) and a CrAlN coating (Balinit©, Oerlikon Balzers) was designed to enhance wear properties of hydraulic fracture pumps plungers used in the O&G Industry. On subsequent reciprocating motions, pumped slurry (containing solid particles) would eventually penetrate the interstice between the plunger´s operating surface and the seal, thus causing permanent damage.
The duplex system was analyzed comparing to a standard treatment for these pistons (thermal sprayed coating over carbon steel): optical and electronic microscope, depth hardness profiles, EDS and DRX. Two groups of coated samples were selected with different surface finishing, and the nitrided sample was used for comparison, so as the untreated steel. Scratch Test at different constant loads and Rockwell C indentation were used to test adhesion. Abrasion wear tests were carried out following ASTM G65. Finally, laboratory results were compared to field tests.
The PVD coating were 2500 HV hard, 3-4 microns thick, and the nitrided layer provided a soft hardness depth profile of about 320 microns width. The standard thermal spray coating was 800 microns thick, with an average hardness of 750 HV but with an abrupt change in hardness with the substrate. The adhesion was extremely good, critical load was 125 N. In the abrasive tests, the mass loss in the PVD coated samples was reduced 30 times respect to the standard coated samples. In the field technological test the PVD coated pistons improved the quantity of pumping cycles in almost 300%. |
| format |
Documento de conferencia acceptedVersion |
| author |
Brühl, Sonia Patricia Dalibón Bähler, Eugenia Laura Cabo, Amado Crimello, Pablo Aguirre, Luis Alberto Carfi, Guillermo Rodolfo |
| author_facet |
Brühl, Sonia Patricia Dalibón Bähler, Eugenia Laura Cabo, Amado Crimello, Pablo Aguirre, Luis Alberto Carfi, Guillermo Rodolfo |
| author_sort |
Brühl, Sonia Patricia |
| title |
Wear and adhesion properties of a PVD duplex coated medium alloy steel for plungers in the oil and gas industry |
| title_short |
Wear and adhesion properties of a PVD duplex coated medium alloy steel for plungers in the oil and gas industry |
| title_full |
Wear and adhesion properties of a PVD duplex coated medium alloy steel for plungers in the oil and gas industry |
| title_fullStr |
Wear and adhesion properties of a PVD duplex coated medium alloy steel for plungers in the oil and gas industry |
| title_full_unstemmed |
Wear and adhesion properties of a PVD duplex coated medium alloy steel for plungers in the oil and gas industry |
| title_sort |
wear and adhesion properties of a pvd duplex coated medium alloy steel for plungers in the oil and gas industry |
| publishDate |
2021 |
| url |
http://hdl.handle.net/20.500.12272/4735 |
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