STUDY OF SELECTED USABLE PROPERTIES OF THE TOP LAYERS OF WELD OVERLAYS PRODUCED BY LASER TECHNOLOGY FOR APPLICATIONS IN THE POWER INDUSTRY
Journal Title: Tribologia - Year 2018, Vol 277, Issue 1
Abstract
The paper presents the results of laboratory tests of test specimens produced by multi-layer laser padding alloy Stellit Co-6 powder on a substrate with heat-treated X22CrMoV12-1 alloy steel. Multilayer laser padding was performed on a TRUMPF TruLaser Cell 3008. The formed weld overlays surface was studied using an optical microscope. Selected usable properties, such as surface topography, microstructure, hardness and erosion resistance were studied. During the analysis, areas of cross-sections test specimens after multilayer laser padded, in the connection zone of the substrate material with weld overlay, no cracks and no discontinuities in weld overlay were found in the substrate. As a result of conducted experiments, regular, repetitive weld overlays with characteristic directional crystallization were obtained. A microstructure with different growth directions with respect to the surface of the substrate shaped coniferous dendrites was obtained. The hardness of the weld overlays was in the range from 420 to 620 HV0.1, and in the heat affected zone, in the range of 320 to 420 HV0.1. Significant increases in erosion resistance of the surface layer of Stellite type Co-6 weld overlay produced by laser in comparison with the parent material after hardening were found.<br/><br/>
Authors and Affiliations
Wojciech NAPADŁEK, Adam WOŹNIAK
Keywords
Related Articles
- EP ID EP346182
- DOI 10.5604/01.3001.0011.9932
- Views 50
- Downloads 0
Model diatermiczny łożyska porowatego z dodatkowym zasilaniem olejem
Przedstawiona w pracy analiza dotyczy modelu diatermicznego łożyska porowatego pracującego w warunkach dodatkowego zasilania olejem. Podane zostały równania ruchu i energii dla szczeliny smarnej i tulei porowatej uzupełn...
A STUDY ON THE IMPACT OF TEETH MESHING CONDITIONS AND PROFILE CORRECTION ON THE CARRYING CAPACITY, WEAR, AND LIFE OF A CYLINDRICAL GEAR
Using an innovative method for determining wear and life of toothed gears, the author investigates the effect of teeth meshing in a mixed (double-singledouble) tooth engagement of cylindrical helical gears on their conta...
PRESSURE AND CAPACITY FORCE IN JOURNAL LONGITUDINAL BEARING LUBRICATED WITH MICROPOLAR OIL
This paper presents the results of the numerical solution for the Reynolds equation for laminar, steady oil flow in a slide plane bearing gap. Lubrication oil is fluid with micropolar structure. Materials engineering and...
PORÓWNANIE ZUŻYCIA SMAROWANYCH WODĄ ŁOŻYSK ŚLIZGOWYCH Z PANWIAMI Z NBR ORAZ PTFE
Nadmierne zużycie czopa wału okrętowego może być spowodowane wieloma czynnikami, np. warunkami pracy (temperatura, prędkość poślizgu, naciski, rodzaj czynnika smarnego), rodzajem materiału zastosowanego na panwie łożysk...
Wpływ preparatów krwi na właściwości tribologiczne skojarzenia UHMWPE/STOP CoCrMo
Wprowadzenie nowego materiału na implanty długookresowe, a zwłaszcza endoprotezy, powinno być poprzedzone kompleksowymi badaniami – w tym tribologicznymi. Niemożliwe do pominięcia badania eksploatacyjne in vitro materiał...