公开(公告)号：US20190084104A1

公开(公告)日：2019-03-21

申请号：US16106890

申请日：2018-08-21

Applicant: ROLLS-ROYCE plc

Inventor： Donka NOVOVIC ,  James KELSEY ,  David T. CURTIS

IPC: B23Q3/08 ,  B28D7/04 ,  C04B41/50 ,  C04B41/00

Abstract: A method of: (i) providing a mould, comprising a mould body and a mould cavity; (ii) positioning the workpiece within the mould cavity; (iii) providing a plurality of part locator rods, each rod being located in the mould body and protruding into the mould cavity, a distal end of each rod abutting against an outer surface of the workpiece; (iv) providing a fluid, the fluid filling a void defined between an outer surface of the workpiece and an internal surface of the mould cavity; (v) cooling the mould, workpiece and fluid to below a freezing point of the fluid; (vi) removing the workpiece encapsulated in frozen fluid, from the cavity, with the rods protruding from outer surface of frozen fluid; (vii) securing the encapsulated workpiece on a machine tool; and (viii) using the protruding part locator rods to position the workpiece on the machine tool in readiness for machining operation.