Method for machining turbine rotor with special-shaped center hole

A processing method and technology of turbine rotors, which are applied to the supporting elements of blades, engine elements, machines/engines, etc., can solve problems such as different forces on the center holes at both ends, production limitations, and floating value of the outer circle of the turbine shaft. Improve the dimensional and geometric tolerances of each file, and the effect of strong reliability
CN110640405AInactive Publication Date: 2020-01-03CHONGQING JIANGJIN SHIPBUILDING IND
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHONGQING JIANGJIN SHIPBUILDING IND
Publication Date
2020-01-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for machining a turbine rotor with a special-shaped center hole. The method for machining the turbine rotor with the special-shaped center hole comprises the followingsteps that a turbine disk and a turbine shaft are welded; heat treatment is conducted; a center hole is drilled, and the turbine disk outer circle and end face margin are removed; semi-finish turningis conducted on end faces of the turbine end of the turbine disk and the special-shaped center hole; turning is conducted on a technological choke plug; semi-finish turning is conducted on end facesof the air-compressing end the turbine disk and the outer circle and end faces of the turbine shaft and the outer circle; a turbine shaft inner hole is drilled; turning is conducted on a turbine shafttool withdrawal groove, chamfering and a shaft stair inner hole; heat treatment is conducted; the technological choke plug and the turbine disk are welded and fixed; the center hole is turned in thetechnological choke plug, and two end faces of the big outer circle of the turbine disk are turned; the big outer circle of the turbine disk and the outer circle M of the turbine shaft are ground; a turbine shaft threaded hole, a stair inner hole and taper are turned, and tapping is conducted; the big outer circle of the turbine disk and end faces, the outer circle of the turbine shaft and end faces, the small outer circle of the turbine disk and the turbine disk D face are ground; an air-sealing groove is turned; and the technological choke plug is removed.
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Description

technical field

[0001] The invention relates to the technical field of turbine rotor machining, in particular to a machining method of a turbine rotor with a special-shaped center hole. Background technique

[0002] The turbine rotor is the main rotating component inside the turbocharger. The turbine rotor uses the steam generated by the heat recovery system to push the turbine blades to work through compression, and the turbine rotor is the most important rotating part that provides power in the entire system.

[0003] The supercharger is installed on the exhaust side of the engine, so the working temperature of the supercharger is very high, and the speed of the rotor is very high when the supercharger is working, which can reach hundreds of thousands of revolutions per minute, so the unbalance of the turbine rotor must be very small. In this way, the requirements for the grinding run-out value during the machining process of the turbine rotor are very small. From the pe...

Claims

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