公开(公告)号：US20190329287A1

公开(公告)日：2019-10-31

申请号：US16383734

申请日：2019-04-15

Applicant: ROLLS-ROYCE plc

Inventor： Aleksander M. CENDROWICZ ,  Paul J. WILSON ,  Akshay BHATT ,  Athira RAJIV ,  Per NOHLERT ,  David A. BELL

IPC: B05D3/00 ,  B05D1/18 ,  B22C9/10 ,  B22C9/12

Abstract: An article 6 made from a porous material, such as a ceramic material, is dipped into a liquid impregnating material 12, such as molten urea in a bath 14. After withdrawal from the bath 14, excess impregnating material 12 is removed from the article 6 by means of an air knife 22. The air knife 22 is directed obliquely into an enclosure 18, which is maintained at a temperature above the melting point of urea. The article is passed into the enclosure 18 through the flow from a further air knife 20 which creates a separation airflow separating the interior of the enclosure 18 from the ambient surroundings. The article is carried by a fixture 6 to be conveyed along the processing line on a conveyor 2.