Electrolytic machining method for maintaining and remanufacturing of aeroengine

Abstract

The invention discloses an electrolytic machining method for maintaining and remanufacturing of an aeroengine. The electrolytic machining method for maintaining and remanufacturing of the aeroengine comprises the first step of study on the electrolytic machining mechanism of titanium alloy, the second step of design and preparation of a cathode, the third step of preparation of a special electrolyte, the fourth step of acquisition of technological parameters in the electrolytic machining process, the fifth step of study on precision control of electrolytic machining, the sixth step of study on the influence of flow field distribution of the electrolyte, and the seventh step of establishment of an electrolytic machining quality evaluation system. According to the electrolytic machining method for maintaining and remanufacturing of the aeroengine, the electrolytic machining technique is used for replacing a traditional machining method to meet technical requirements for machining of molded surfaces of key components of the civil aeroengine, so that secondary damage such as micro-cracks, micro-scratches and generated mechanical stress, caused by the traditional machining method, to a machined surface is avoided. The electrolytic machining method is used as the machining basis for welded titanium alloy structural components, so that influences such as overheating, a cold working layer, mechanical stress and micro-damage to the surface can be avoided while a redundant surfacing layer is removed; and meanwhile, the influence of feeding limitation of the traditional machining method can be avoided, the machining time is greatly shortened, and economic cost is reduced.

Description

technical field [0001] The invention relates to an electrolytic machining method for repairing and remanufacturing of an aero-engine. Background technique [0002] Electrolytic machining is one of the electrochemical machining technologies. It is based on the principle of anodic dissolution in the electrochemical process and uses a pre-prepared special cathode to process the workpiece according to a certain shape and size. In the process of electrolytic machining, the erosion rate of the workpiece material will not be affected by the hardness, strength, and toughness of the processed material; the material of the workpiece is removed in an ion state, without cold hardening layer, hot recasting layer and the resulting surface Fiber cracks, smooth surface, no processing lines, no burrs, etc., and because there is no cutting force and surface internal stress, the processing deformation of the workpiece is small; the cathode of the electrolytic machining tool does not contact th...

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Problems solved by technology

Its main feature is that it is large in size, and there are many bosses, mounting holes, and weight-reducing grooves distributed on it, and it is a thin-walled structure, so it is easy to deform during machining, and the removal allowance is large, the processing is difficult, and there are Adverse effects such as mechanical stress

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