公开(公告)号：US20190145010A1

公开(公告)日：2019-05-16

申请号：US16077976

申请日：2017-02-15

Applicant: REM TECHNOLOGIES, INC.

Inventor： Agustin DIAZ ,  Gary J. SROKA

IPC: C23F3/00 ,  C09G1/02 ,  C09K3/14

Abstract: A method for chemical processing an internal cavity of an additive manufactured (AM) metal workpiece is disclosed in which a connector is provided in fluid connection with the internal cavity and a chemical polishing solution is flowed through the connector and the internal cavity to process the internal cavity to a desired finish.

公开(公告)号：US20190276924A1

公开(公告)日：2019-09-12

申请号：US16355197

申请日：2019-03-15

Applicant: REM TECHNOLOGIES, INC.

Inventor： Mark D. MICHAUD ,  Gary J. SROKA ,  Lane WINKLEMANN

IPC: C23C8/40 ,  C23F3/00 ,  C23C22/77 ,  C23C22/73 ,  C23C22/46 ,  C09D5/08 ,  C22C38/56 ,  C22C38/52 ,  C22C38/44 ,  C22C38/00 ,  C23F3/06

Abstract: A highly reactive conversion coating chemistry is used during CAVF processing of high hardness steel alloys such as AMS 6509 and AMS 6517 steel alloys. This chemistry produces a hard, thin, black conversion coating that is not fully rubbed off by the media during the CAVF process. Distressed material regions on the surface of the alloys are not susceptible to forming the conversion coating and remain white. Visual inspection for the presence of such regions is facilitated.