A method for eliminating the eddy current in the flow field in the electrolytic machining gap of the tube electrode

Abstract

A method for eliminating the eddy current in the flow field in the electrolytic machining gap of the tube electrode provided by the present invention comprises the following steps: using a laser drilling process to perforate the side of the tube electrode, and performing corresponding insulation treatment on the perforated tube electrode, During electrolytic machining, the electrolyte flows downward in the tube electrode, and is sprayed out from the outlet at the lower end of the tube electrode. The electrolyte beam jetted from the tube electrode outlet impacts the electrolytic processing area, and part of the electrolyte is sprayed from the side hole of the tube electrode. The eddy current area of ​​the electrolyte in the processing area is eliminated under the impact and disturbance of the electrolyte sprayed from the side hole, and the electrolytic product is discharged from the processing area in time during the circulation of the electrolyte. At the same time, under the action of the reaction force when the electrolyte hits, reduce The small tube electrode is induced to vibrate by the amplitude of the electrolyte flow. By eliminating the eddy current area to discharge the electrolytic machining products and reducing the amplitude of the tube electrode, the occurrence of short circuit in the machining process can be effectively reduced, and the process stability of the tube electrode electrolytic machining can be improved.

Description

technical field [0001] The invention belongs to the technical field of electrolytic machining of tube electrodes, in particular to a method for eliminating eddy currents in a flow field in gaps of electrolytic machining of tube electrodes. Background technique [0002] Tube electrode electrolytic machining is a processing technology that uses a hollow metal tube as the cathode of the tool to electrochemically etch the anode of the workpiece. It is often used for electrolytic drilling, and its application is mainly reflected in the field of aviation manufacturing. With the advancement of modern aviation industry technology, the temperature before the turbine of the aero-engine continues to increase, and the hot-end parts of the engine (such as high-pressure turbine working blades, guide vanes, combustion chambers, etc.) have widely used film cooling technology, and each blade has dozens of There are tens of thousands of such film cooling holes in the combustion chamber. Thes...

AI Technical Summary

Problems solved by technology

However, the electrolyte in the eddy current area is difficult to update in time, and it is easy to form a "dead water area". It also destroys the balance of electrolyte pressure in the machining gap, causing the tube electrode to vibrate, which also increases the probability of short circuit, reduces the stability of the machining process, and affects the machining accuracy.

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