Flexible wire electrode assembly and method for composite polishing of inner surface of tiny metal flow channel
A metal flow channel and composite polishing technology is applied in the field of surface polishing of the inner wall of the metal flow channel to achieve the effect of avoiding direct contact and short circuit.
Active Publication Date: 2021-10-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0006] However, there are relatively few studies on this process method and workpiece structure, and there is no ideal electrode form that can be directly applied to the surface of structural parts with thin walls, small inner diameters, and complex curved shapes such as tiny metal flow channels. chemical mechanical compound polishing
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[0022] Taking a U-shaped metal flow channel with an inner diameter of 5 mm and a wall thickness of 3 mm as an example to be polished, the technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings.
[0023] according to figure 1 As shown, the flexible wire electrode 1 for electrochemical mechanical composite polishing of the inner surface of the tiny metal flow channel is formed by a conductive cathode wire 2 and an insulating flexible wire 3, which can be bent arbitrarily according to the shape of the tiny metal flow channel 4. The diameter of the insulating flexible wire 3 is greater than the diameter of the conductive cathode wire 2, the insulating flexible wire 3 is a 0.8mm PVC soft wire, and the conductive cathode wire 2 is a 0.2mm tungsten wire, so that the conductive cathode wire 2 is located in the spiral formed by the insulating flexible wire 3 In the groove, the conductive cathode wire 2 and the ...
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The invention discloses a flexible wire electrode assembly and method for composite polishing of the inner surface of a tiny metal flow channel. Its main features are: the flexible wire electrode for electrochemical mechanical composite polishing of the inner surface of the tiny metal flow channel is formed by spirally winding two flexible wires, one of which is an insulating flexible wire, the other is a conductive cathode wire, and the insulating flexible wire The diameter is larger than the conductive cathode wire, and the conductive cathode wire is located in the spiral groove formed by the insulating flexible wire, so that the conductive cathode wire and the inner surface of the tiny metal flow channel do not contact and short circuit; when polishing, the flexible wire electrode reciprocates in the tiny metal flow channel, The electrolyte mixed with abrasive particles flows in from one end of the tiny metal flow channel through the booster pump, and flows out from the other end, and uses electrochemical action and micro-cutting action of high-speed moving abrasive particles to perform electrochemical mechanical composite polishing on the inner surface of the tiny metal flow channel .
Description
technical field [0001] The invention belongs to the technical field of surface polishing of the inner wall of a metal flow channel, and in particular relates to a flexible wire electrode assembly and method for composite polishing of the inner surface of a tiny metal flow channel. Background technique [0002] 3D printing technology has achieved rapid development in recent years. This manufacturing technology can realize the manufacture of complex structures that are difficult or impossible to process by traditional techniques, and has great advantages in the application of aerospace and other fields. Combined with 3D printing technology to carry out integrated design and manufacture of parts, the production process is effectively simplified and the manufacturing cycle is shortened. But at the same time, as a relatively new manufacturing technology, 3D printing technology still has problems such as limited forming accuracy of formed parts and relatively large surface roughne...
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IPC IPC(8): B23H5/10B23H5/08
CPCB23H5/08B23H5/10
Inventor曾永彬李延梁杨涛徐正扬
OwnerNANJING UNIV OF AERONAUTICS & ASTRONAUTICS