| 摘要 |
A method for the manufacture of a casing (63, 73) which has a boss (74) is described. The method comprises providing two canister portions (1, 2) a first (1) defining an outer wall geometry (73) of a casing including a boss (74) and a second defining an inner wall geometry (63) of the casing. The casing is made using known PHIP methods. The second canister portion includes an array of holes or recesses which, when the canister portions are aligned, face a recess on the first canister portion which defines the boss (74) such that in the nett shape COS an array of pedestals (64a, 64b, 64c) is provided aligned with the boss (74). The dimension from an exposed end of a pedestal to an exposed surface of the boss (74) is sufficient to receive a bolt thread of the minimum length required to secure a component to the boss (74). |
