Repair process of screw rod compressor rotor

Abstract

The invention provides a repair process of a screw rod compressor rotor. The repair process comprises the following processing steps of (a) rotor surface pretreatment, (b) laser cladding processing, (c) mechanical processing and (d) rotor detection. The invention discloses the repair process of the screw rod compressor rotor. The repair process has the advantages that the implementation is simple and convenient, the repair cost is low, the screw rod compressor rotor treated by the repair process has higher intensity and better surface corrosion resistance and wear resistance, in addition, the rotor gap is small, and the surface is smooth and cannot be easily contaminated.

Description

technical field [0001] The invention relates to a compressor, in particular to a repair process for a screw compressor rotor, and belongs to the technical field of compressors. Background technique [0002] Screw compressors are widely used in aerodynamics, refrigeration and various technological processes due to their unique advantages such as few wearing parts, compact structure, stable operation, long life, high working reliability and high efficiency. The rotor is the core part of this kind of compressor. The most important thing in the design of the rotor is the design of the rotor tooth shape. Its profile is complex and requires high processing. The reliability, efficiency and noise of the screw compressor depend largely on the machining accuracy of the screw rotor. [0003] At present, the water and carbon dioxide produced by the screw compressor in various processes will form more carbonic acid and calcium oxide and other substances, which are easy to cause corrosio...

AI Technical Summary

Problems solved by technology

[0003] At present, the water and carbon dioxide produced by the screw compressor in various processes will form more carbonic acid and calcium oxide and other substances, which are easy to cause corrosion, erosion and wear hazards to the screw rotor. The meshing gap of the rotor reaches 8-10mm, and the design requirement is usually 0.5-0.6mm, which leads to the scrapping of the screw compressor rotor, so the screw compressor often needs to be repaired after a period of use

Existing techniques for repairing screw rotors include vibration welding, argon arc welding, spraying, coating, etc. These traditional repairing techniques have high costs, thermal stress and thermal deformation during the process, and easy contamination of the surface that requires multiple cleanings and time-limited repairs. Defects such as low durability and difficulty in guaranteeing the bonding strength of the matrix material

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