Alternative Low-Cobalt Powder for PTA Hardfacing

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Alternative Low-Cobalt Powder for PTA Hardfacing

Popis výsledku v původním jazyce

Continuous improvement of quality and cost saving in manufacturing of machine parts result in the search for an alternative materials for high temperature applications. In the present study a comparaison of cobalt-matrix material and iron based material for PTA hardfacing is presented. These materials are used for plasma hardfacing of sealing surfaces of industrial valves operating at elevated temperatures. The feed stock powders were compared in terms of particle geometry and quality. The deposits were made by continuous current and by pulse current of 3 and 100 Hz. The samples were subjected to thermal stress at 600 ˚C for 3 hours. The geometry and the structure of deposits were compared. Microhardness were meassured on cross section of the deposits. It was found that the iron based materials becomes harder after heat treatment. Even that they present lower hardnes than cobalt based ones.

Název v anglickém jazyce

Alternative Low-Cobalt Powder for PTA Hardfacing

Popis výsledku anglicky

Continuous improvement of quality and cost saving in manufacturing of machine parts result in the search for an alternative materials for high temperature applications. In the present study a comparaison of cobalt-matrix material and iron based material for PTA hardfacing is presented. These materials are used for plasma hardfacing of sealing surfaces of industrial valves operating at elevated temperatures. The feed stock powders were compared in terms of particle geometry and quality. The deposits were made by continuous current and by pulse current of 3 and 100 Hz. The samples were subjected to thermal stress at 600 ˚C for 3 hours. The geometry and the structure of deposits were compared. Microhardness were meassured on cross section of the deposits. It was found that the iron based materials becomes harder after heat treatment. Even that they present lower hardnes than cobalt based ones.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Metal 2018 Conference proceedings

ISBN

978-80-87294-84-0

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

996-1002

Název nakladatele

TANGER

Místo vydání

Ostrava

Místo konání akce

Brno, Hotel Voroněž I

Datum konání akce

23. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000461832200157