Inner surface finish-machining reinforcing system based on hydraulic cavitation jet

Abstract

The invention discloses an inner surface finish-machining reinforcing system based on hydraulic cavitation jet. The system comprises a liquid storage tank, a water pump, an upstream pressure regulator, a process chamber and a downstream pressure regulator which are sequentially connected, wherein a heater is arranged in the liquid storage tank, and the liquid storage tank is connected with an airpump; the throat of a Venturi tube is connected with a grinding pool through a pressure pump; a sealing end cover is arranged on the process chamber, and the process chamber is used for containing a workpiece; and a chuck is fixedly arranged in the process chamber. According to the system, fluid enters the process chamber through the Venturi tube and is combined with grinding liquid entering the throat of the Venturi tube to generate cavitation bubbles, the surface of a target is impacted by impact waves generated when the cavitation bubbles are broken, erosion grinding is realized, and the purpose of finish-machining on the inner surface of the workpiece is achieved; the system is good in adaptability, high in precision, good in stability and applicable to an aerospace industrial materialdifficult to machine; and the maximum lowering rate of the roughness of the contour surface of the material obtained through the process flow is 47.5%. Obviously, a high material removing rate and high surface precision can be obtained through the process treatment.

Description

technical field [0001] The invention relates to a strengthening system for inner surface finishing based on hydraulic cavitation jet, which belongs to the technical field of grinding surface finishing. Background technique [0002] Precision machining of the inner surface of a workpiece is an important post-processing step in traditional manufacturing methods for parts. The mainstream post-processing processes that are widely used are special processing and new abrasive flow processing. [0003] 1. Special processing technology: generally refers to the processing method that uses energy such as electric energy, heat energy, light energy, electrochemical energy, chemical energy, sound energy and special mechanical energy to remove or increase materials, but the inner surface is processed by special processing methods The workpiece has problems with poor surface roughness and thermally recast layer deposition. [0004] 2. Abrasive flow machining: Abrasive flow machining uses...

AI Technical Summary

Problems solved by technology

However, the use of abrasive flow processing technology will result in a low material removal rate, which will increase the processing time; adjusting the working conditions to increase the material removal rate will result in the inability to complete the surface treatment of the complex inner surface; in addition, due to the flow rate of the working fluid Limited, resulting in inconsistent surface roughness on the inner surface of the workpiece

[0005] Therefore, the development of a novel interior surface finishing technique is crucial to overcome issues such as abrasive embedding and inconsistency in surface finishing.

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