MANUFACTURE OF HOLLOW PARTS

摘要

An article (10) is manufactured using a method comprising cold-spraying a mould blank (2) and melting the mould blank (2) to leave the article (10). A mould blank (2) of a first material having a first melting point is provided. The mould blank (2) has an external shape matching a desired internal shape of the article (10). A powdered material having a second melting point is cold-sprayed onto the mould blank (2) to form a continuous layer (4, 6, 8) over at least part of the mould blank (2). The mould blank (2) is heated to a temperature between the first and second melting points such that the mould blank (2) melts to leave the article (10).