A processing method for compressor impeller of VTR series supercharger

Abstract

The invention provides a method for processing the compressor impeller of a VTR series supercharger, comprising the steps of: a. the inner hole of the shaft of the impeller center; b. heat treatment; c. turning the end surface and outer circle of the impeller; d. turning the small end of the impeller and the impeller shaft Facing the inner hole, take the sample ring on the impeller at the same time; e. Inspection; f. Rough turning the small end of the impeller; g. Blades and runners; i. The outer circle of the large end of the finishing impeller; j. The large end of the finishing impeller and the axial inner hole of the impeller; k. Clamping and positioning the impeller on the turning tool, the impeller positioning surface used in the next process of finishing turning ; l. The large end of the impeller and the axial inner hole of the impeller; m. The small end face of the impeller; n. The meridian surface of the impeller and the end face of the blade. This method improves the matching accuracy and sealing performance between the large end surface of the impeller and the air seal, and solves the problem that the original sample ring and the impeller are separated and then heat treated, and the sample ring cannot truly reflect the performance status of the part after heat treatment.

Description

technical field [0001] The invention relates to the technical field of ship engine manufacturing and processing, in particular to a processing method for a compressor impeller of a VTR series supercharger. Background technique [0002] At present, with the changes in the international situation, my country's shipbuilding industry has developed rapidly, and its market share has maintained a leading position in the world. The main power plant of the ship is a diesel engine, and the supercharger is an important part of the diesel engine, and its technical level directly affects the working efficiency of the marine diesel engine. [0003] Compressor impeller is the core component of VTR series supercharger products, key parts, such as figure 1 As shown, this part is installed on the left end of the rotor, and it rotates at high speed with the rotor sleeve during operation. There are higher requirements for assembly and cooperation between this part and the surrounding parts, es...

AI Technical Summary

Problems solved by technology

[0009] In the existing technology, the dimensional accuracy and shape accuracy of the large end surface of the impeller cannot meet the design requirements, and the heat treatment of the sample ring and the impeller cannot truly reflect whether the mechanical properties of the impeller after heat treatment meet the requirements of the standard specifications. The invention provides a method for processing the compressed air impeller of a VTR series supercharger. The dimensional accuracy and shape and position accuracy of the impeller processed by the method can meet the product design requirements, and the matching accuracy and accuracy between the large end surface of the impeller and the air seal are improved. Sealing, improving the original heat treatment process, the sample ring and the impeller are heat treated in the same body and in the same furnace, which solves the problem that the sample ring cannot fully and truly reflect the performance status of the parts after heat treatment after separation

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