Patent ID: 11927100
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A method of manufacturing a labyrinth sealing device mounted between a diaphragm and a turbine rotor of a turbine in order to induce smooth rotation of the turbine rotor and prevent a leakage of gas by minimizing friction between a rotor, such as the turbine rotor, and a stator, such as the diaphragm, when the rotor rotates in the stator,
wherein the labyrinth sealing device includes a ring-shaped body and a labyrinth part protruding from one surface of the ring-shaped body, the ring-shaped body is manufactured by centrifugal casting or ring mill, and the labyrinth part is manufactured by 3D printing,
wherein the ring-shaped body and the labyrinth part are stacked by ultrasonic vibration applied to the ring-shaped body or stacked powder when they are stacked through laser cladding,
wherein when stacking through laser cladding, the ring-shaped body and the labyrinth part are stacked while applying ultrasonic vibration and far infrared rays between 2 KHz and 100 MHz to the ring-shaped body or stacked powder,
wherein the far infrared wavelength proceeds between 10-1000 μm and is stacked through laser cladding while maintaining the temperature of the ring-shaped body as the base material within 25-900° C.,
wherein the labyrinth part includes a plate-shaped base and a teeth part protruding from one surface of the base,
wherein the labyrinth part allows the base of the labyrinth part to come into contact with the ring-shaped body, and then is stacked or bonded by a lamination or bonding method such as laser cladding, and by manufacturing the base of the labyrinth part of the same material as the ring-shaped body, the labyrinth part and the ring-shaped body can have a firm bounding relationship,
wherein a protrusion is formed on one of the surfaces of the base and the body in contact with each other, and a groove corresponding to the protrusion is formed on the other, assembled and bonded like an assembly block, so that the labyrinth part and the body have the firm bounding relationship.