49 KB2223 KB47 KB199219991997Bavdek, U.Lengar, Z.Šuštaršič, BorivojUršič, Vito10 straniletnik:31številka:5str. 377-385ISSN:1318-0010COBISSID:18997765URN:URN:NBN:SI:doc-ALAZH1P2slInštitut za kovinske materiale in tehnologijeŽelezarna JeseniceŽelezarna RavneŽelezarna ŠtoreKovine zlitine tehnologijelastnostilivarstvomagnetimagnetne lastnostiprahOptimiranje priprave prahov za sintrane magnete Alnico| Optimizing of sintered Alnico magnets powder manufacture|The procedure of powder preparation for sintered Alnico magnets in the Magneti, Ljubljana, was anlysed. On the basis of the results of investigations, suggestions for the improvement of the Alnico powder preparation procedure were proposed. A flow-chart of the complete technological procedure including all control prescriptions and procedures was prepared. The suggested improvements (a homogenization of smaller batches into a larger strictly controlled batch) are related primarily to the current procedure of Alnico powder preparation, and could be carried out directly. In addition, suggestions for global modification of technological powder preparation procedure are also given. These modifications (casting of larger preforms in metal moulds) require further investment and are therefore dependent on market and other commercial analyses, as well as on business decisionsAnalizirali smo sedanji postopek izdelave prahov za sintrane megnete Alnico vrste Simag 1500. Na osnovi rezultatov preiskav smo predložili izboljšave oziroma optimiranje tehnološkega postopka za stabiliziranje dimenzijskih, mehanskih in magnetnih lastnosti sintranih magnetov. Izdelana je bila tehnološka shema postopka, ki vsebuje vse potrebne kontrolne predpise. Predložene spremembe zahtevajo le delno korekcijo sedanjega postopka in manjše investicije. Te spremembe je možno uvesti takoj. Raziskave so tudi pokazale, da je v redno prizvodnjo možno unesti ekonomsko, ekološko in tehnološko še ugodnejši postopek (litje v večje kovinske kokile) za izdelavo litih preoblikovancev. To zahteva celovitejše spremembe v proizvodnji sintranih magnetov, ki so vezane na večje investicije, tržne in druge ekonomske analize ter zato tudi zelo pomembne poslovne odločitveTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of Slovenia