<p>Removing of a casting core from a metal casting leaves at least one opening in a surface of the metal. The opening is filled with a sacrificial material. The metal and sacrificial material are machined at the opening. After the machining, a remainder of the sacrificial material is removed.</p>
申请公布号
EP2000234(A2)
申请公布日期
2008.12.10
申请号
EP20080251306
申请日期
2008.04.03
申请人
UNITED TECHNOLOGIES CORPORATION
发明人
LUCZAK, BLAKE J.;COTNOIR, GLENN A.;BEALS, JAMES T.;MORIN, THOMAS M.;PARKOS JR., JOSEPH, J.
