Variation of Mechanical Characteristics for Thin Wall Tubes Processed in Ultrasonic Field

Mihai SUSAN; Dragoş Cristian ACHIŢEI; Roxana Gabriela ŞTEFANICĂ; Bogdan Lucian GAVRILĂ

Auteur/ices

Mihai SUSAN "Gheorghe Asachi" Technical University of Iasi, Romania
Dragoş Cristian ACHIŢEI "Gheorghe Asachi" Technical University of Iasi, Romania
Roxana Gabriela ŞTEFANICĂ Institutul de Fizică Aplicată din Chişinău, Republic of Moldova
Bogdan Lucian GAVRILĂ "Gheorghe Asachi" Technical University of Iasi, Romania

Mots-clés :

thin walls tubes, stainless steel, ultrasonic field, cold hardening, convergent conic dies, mechanical characteristics

Résumé

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.