Method for eliminating flow field vortexes in tubular electrode electrolytic machining interval

Abstract

The invention provides a method for eliminating flow field vortexes in a tubular electrode electrolytic machining interval. The method comprises the following steps that the lateral face of a tubular electrode is punched through a laser punching process; the punched tubular electrode is subjected to corresponding insulating treatment; electrolyte flows downwards in the tubular electrode during electrolytic machining and is sprayed outwards from an outlet in the lower end of the tubular electrode; the electrolyte beam sprayed out of the outlet of the tubular electrode impacts an electrolytic machining area; part of electrolyte is sprayed out of a hole in the lateral face of the tubular electrode; under the impact and disturbance function of the electrolyte sprayed out of the hole in the lateral face, a vortex area of the electrolyte of the machining area is eliminated, and electrolysate is discharged out of the machining area in time in the circular flowing of the electrolyte; and meanwhile, under the function of reactive force when the electrolyte impacts, the amplitude of vibration of the tubular electrode caused by flowing of the electrolyte is reduced. The occurrence of short circuit in the machining process can be effectively reduced by eliminating the electrolysate discharged out of the vortex area and reducing the amplitude of vibration of the tubular electrode, and the process stability of the electrolytic machining of the tubular electrode is 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.

Images