Electrochemical machining method for auxiliary anode tube electrode

Abstract

The invention relates to an electrochemical machining method for an auxiliary anode tube electrode and belongs to the technical field of electrochemical machining. The electrochemical machining method includes the following processes: 1, manufacturing a perforated plate (5); 2, positioning and clamping a workpiece anode (4), the perforated plate (5) and an auxiliary anode (6); 3, connecting the positive pole of a power source (2) with one end of a substrate clamp (7) and one end of the workpiece anode (4), connecting the negative pole of the power source (2) with a tube electrode (1), and connecting the other end of the electronic load (3) with the workpiece anode (4); 4, leading in electrolyte, setting a constant voltage working mode of the electronic load (3) to achieve voltage drop, starting the power source, and performing electromechanical machining on the tube electrode when the potential of the workpiece anode (4) is lower than that of the auxiliary anode; 5, separating and cleaning the workpiece anode (4), the perforated plate (5) and the auxiliary anode (6). The electrochemical machining method for the auxiliary anode tube electrode has important meaning in improving aperture outlet accuracy of tube electrode electrochemical machining.

Description

Technical field [0001] The electrolytic machining method for an auxiliary anode tube electrode of the invention belongs to the technical field of electrolytic machining. Background technique [0002] Advanced cooling technologies such as impingement film cooling, divergent cooling, and laminate cooling are widely used in the hot-end components of modern high-performance aeroengines. The film cooling holes of the turbine blade and the film cooling holes of the main combustor flame tube are indispensable structures in the aero-engine, and their processing quality directly affects the cooling efficiency. The diameter of the film cooling hole is generally between 0.25 mm and 1.8 mm, and the number of holes is large. Difficult-to-machine materials such as nickel-based superalloys, titanium alloys, and intermetallic compounds are often used; recast layers and microcracks are not allowed on the wall of the film hole . The above-mentioned processing characteristics pose a great ch...

AI Technical Summary

Problems solved by technology

Since the workpiece usually has defects such as uneven thickness, the same feed depth makes it very easy for the holes to be processed one after the other.

If the feed is continued, the hole that is processed first will undergo secondary processing, and the shape of the bell mouth with a large bottom and a small top will appear, which will affect the machining accuracy of the hole exit and greatly reduce the consistency of the group hole exit.

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