IRON POROUS SLEEVES WITH MICRO-SEGMENTS ON THEIR SLIDING SURFACE, MADE WITH THE LASER TECHNIQUE

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IRON POROUS SLEEVES WITH MICRO-SEGMENTS ON THEIR SLIDING SURFACE, MADE WITH THE LASER TECHNIQUE

Journal Title: Tribologia - Year 2013, Vol 252, Issue 6

Abstract

In this article some results of the research on a new generation slide porous sleeves is presented. The sleeves are sintered from Höganas NC.100.24 iron powder, with 2.5% addition by weight of copper, with micro-segments (paths) made on their sliding surface with CO2 laser, with increased hardness and locally reduced surface porosity, are presented. The research was carried out within the framework of PBR/15-249/ 2007/WAT-OR00002904 Research Project financed by the Ministry of Science and Higher Education, during 2007–2011 [L. 1]. Significant increase of the load capacity of the porous sleeves with paths, in comparison with the same Ø25/Ø35 x 20 mm sleeves without paths, was obtained. Durability of the bearings was also a little higher, and in comparison with the sleeves with macro-segments made of solid material, durability of the new generation bearings was several times higher. To date there are no bearings sintered from iron powder, and with micro-segments made on their surface with the laser technique. Durability and load capacity of such bearings are higher, and that is why it was decided to submit a proper patent claim to the Polish Patent Office [L. 2].

Authors and Affiliations

Krzysztof GOCMAN, Tadeusz KAŁDOŃSKI, Artur KRÓL, Bolesław GIEMZA

Keywords

porous sleeves iron sinter laser-made micro-segments

EP ID EP269958
DOI -
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