Rotation part of rotary machine and method of manufacturing the same

A method of manufacturing a rotation part of a rotary machine, the method comprising:

• preparing a raw material member;
• lathing processing the raw material member to form a first-cut raw material member including an upper part and an intermediate part;
• end milling processing the first-cut raw material member to form a base unit having a surface constituting fluid channels, a plurality of blade units protruding from the base unit, and a plurality of shroud segment support units connected to the plurality of blade units and extending in a parallel direction to the surface of the base unit;
• end mill processing the plurality of blade units and the plurality of shroud segment support units to form a first reinforcing unit on an intersection portion between the plurality of blade units and the plurality of shroud segment support units;
• placing a shroud segment between adjacent shroud segment support units of the plurality of shroud segment support units;
• and
• bonding the shroud segment and the adjacent shroud segment support units,
• wherein the end milling processing the first-cut raw material member comprises:
• cutting an opening part in the intermediate part;
• and
• cutting the intermediate part through the opening part to form the plurality of blade units protruding form the base unit and the plurality of shroud segment support units extending in the parallel direction to the surface of the base unit.