%0 Journal Article
%T PRODUCTION METHODS AND APPLICATIONS FOR HIGH-QUALITY METAL POWDERS AND SPRAYFORMED PRODUCTS
%A MHohmann
%A SPleier
%A <br>M.Hohmann
%A S.Pleier
%J 金属学报(英文版)
%D 2005
%I 
%X Metal powders of superlative quality, i.e. high cleanliness, rapidly solidified and spherical shape, have seen an increasing demand in the market. The leading technology for the production of such powders is the inert gas atomization of metal alloy melts. To fulfill these requirements, the metal alloy is usually produced in a vacuum induction melting furnace (VI-GA = vacuum induction melting/gas atomization) and poured by means of a preheated tundish system into a gas nozzle where the metal stream is disintegrated by a high kinetic energy inert gas jet. The produced micro-droplets solidify in a free fall inside the atomization tower. For special applications, super-clean and ceramic-free metal powders can be produced by using the EIGA (electrode induction melting/gas atomization) melting- and atomizing system. As an alternative to the metal powder route, the sprayforming technology allows to produce semi-finished products in one step. In this case, the metal droplets produced by the high-energy inert gas nozzle system are directly solidified on a substrate, allowing to form billets, rolls and tubes.
%K powder production
%K atomization
%K inert gas recycling
%K ceramic-free powders
%K sprayforming<br>粉末冶金
%K 喷雾工艺
%K 惰性气体再循环
%K 陶瓷颗粒
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=421CF16530076BE4FFAAB3012D3A2D75&yid=2DD7160C83D0ACED&vid=13553B2D12F347E8&iid=CA4FD0336C81A37A&sid=23CCDDCD68FFCC2F&eid=EA389574707BDED3&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=5