Cavitation Erosion Behavior of Some Gas Nitrated Steels
Journal Title: Machine Design - Year 2017, Vol 9, Issue 3
Abstract
Older researches, conducted by Garcia and Hammitt (published in 1960) showed that hardness is an important factor in increasing the resistance of the surfaces exposed to cavitation erosion. As a result, in present more and more researches are oriented in increasing the hardness of areas subjected to cavitation flows. An excellent procedure is represented by the use of thermochemical treatments through which is realized a thin but very hard layer, with an increased resistance to cavitation implosions and subsequently conducting to a substantial increase of the running time between two consecutive repair works. In step with these research direction are inscribed also the researches presented in the present work. The researches were carried out in the Timisoara Polytechnic University Cavitation Laboratory, on a cavitation erosion device with piezoelectric crystals. There were used three different types of steels (two of them stainless steels and the third an alloyed one) gas nitrated. The comparison between these three types of steels show that the cavitation erosion resistance depends essentially on the layer hardness and the solution can ban be used for machine details having the shape and dimension which allow the use of the treatment both for the manufacturing and repair works proceedings.
Authors and Affiliations
Ilare BORDEASU, Mircea Octavian POPOVICIU, Lavinia Madalina MICU, Cristian GHERA, Laura Cornelia SALCIANU, Liviu Daniel PIRVULESCU, Corneliu Eusebiu PODOLEANU, Sebastian Titus DUMA, Rodica BADARAU
Keywords
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- EP ID EP326837
- DOI 10.24867/MD.9.2017.3.111-116
- Views 126
- Downloads 0
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