Verfahren zum behälterlosen Herstellen rissfreier Gegenstände aus Metall
摘要
A containerless method of producing a crack free metallic article of near-net shape includes melting a filler material into a metallic substrate or seed under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large beam diameter at the substrate surface for an extended length of time to produce a molten pool with a low aspect ratio. Near-net shape is achieved by applying the process in a closed-loop, multi-axis material deposition system. <IMAGE>
申请公布号
DE69617087(T2)
申请公布日期
2002.04.18
申请号
DE1996617087T
申请日期
1996.04.25
申请人
UNITED TECHNOLOGIES CORP., HARTFORD
发明人
MARCIN, JR.;NEUTRA, JUSTIN ANDREA;ABBOTT, DAVID HENRY;ADUSKEVICH, JAMES PETER;SHAH, DILIP M.;CARRAWAY, DOROTHEA NADETTE;LANGEVIN, RAYMOND PAUL;SAUERHOEFER, MARC R.;STONE, RICHARD ALAN