Variation of Mechanical Characteristics for Thin Wall Tubes Processed in Ultrasonic Field
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2009, Vol 32, Issue 2
Abstract
The paper presents the variation of mechanical characteristics of resistance and plasticity for thin wall tubes made of stainless steel 10TiNiCr180, processed in ultrasonic field. Decrease of mechanical characteristics of resistance and increase of plasticity ones in tubes processing in ultrasonic field, with respect to classic technology, are made on account of cold hardening reduction, implicitly metal-tool contact friction. Tubes processing is made through drawing without inner guidance/to empty, using convergent conic dies made of metallic carbides.
Authors and Affiliations
Mihai SUSAN, Dragoş Cristian ACHIŢEI, Roxana Gabriela ŞTEFANICĂ, Bogdan Lucian GAVRILĂ
Study of the Inclusions from the Oriented Grains Silicon Steels and their Influence on the Texture
The paper presents experimental results concerning the inhibitor phases generation by microalloying elements utilization. It was made experiments on three silicon steel charges. It was observed that the inhibitor phases...
The Dental Technology in Art Foundry
The paper presents results of a study undertaken to implement the dental casting technique of small parts characterized by extremely complex drawings of surfaces and thicknesses reduced specific objects. During the study...
Improvement of Photovoltaic Cells Efficiency by Reducing Contamination in Single Chamber PECVD System by Passivation with a-Si:H and μc-Si:H Thin Films
High performance solar cells, deposited in a single chamber, can be obtained when low levels of contamination exists for the p-,i-,n- layers. This is a recurrent problem not only in the laboratories, but also in the indu...
Study of Zro2/Co-Deposition with Cobalt from Chloride Electrolyte
The metal-matrix composites are materials in which the properties of a metallic host material are modified with addition of a second phase (ceramics) by electrodeposition process. The second phase can be hard oxides or c...
Hydrodynamic Aspects on EAF’s Smelt Metallic Mirror
Using the Physical and Mathematical knowledge, a new approach to EAF bath’s hydrodynamic aspects is proposed to be developed in this paper. Experimental results and a mathematical equation package have been concluded tha...