A method for preparing superhydrophobic metal surface by wire electrical discharge cutting
A technology of electric discharge wire and metal surface, which is applied in the field of preparation of superhydrophobic metal surface by wire electric discharge cutting, can solve the problem of inability to prepare micro-scale micro-nano double-layer structure, and achieve low manufacturing cost, stable performance, and reduced pollution.
Active Publication Date: 2019-11-26
XIAMEN UNIV
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Problems solved by technology
Chinese patent CN201710198619 also uses wire cutting to prepare superhydrophobic copper surfaces, but the distance between the micro-protrusions processed by it cannot be smaller than the diameter of the electrode wire, so it cannot prepare micro-nano double-layer structures with smaller microscopic scales.
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[0027] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.
[0028] ginseng Figure 1~3 , the embodiment of the present invention includes the following steps:
[0029] 1) The low-frequency vibration device is installed on the wire electric discharge cutting platform 10, and the low-frequency vibration device is provided with an annular rotary table 1, a rotating base 2, a vibration module 3, an insulating vibration rod 4, an electrode wire collar 5, a switch Power supply and servo controller (not shown in the figure);
[0030] 2) Clamp the workpiece A to be processed on the permanent magnetic chuck 6, adjust the relative position of the insulating vibrating rod 4 and the surface of the workpiece A on the circular rotary table 1, so that the vibration direction F of the insulating vibrating rod 4 is consistent with the surface of the workpiece A The feeding direction of the machine is always kept vertical in ...
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Abstract
The invention discloses a method for preparing a super-hydrophobic metal surface by wire electrical discharge machining and relates to surface machining of metal materials. Through a low-frequency vibration device, a super-hydrophobic curved metal surface with an irregular macroscopic shape can be machined at a time, or a curved surface can be formed by cutting and then vibration machining is performed. A super-hydrophobic structure is prepared on a metal plane, a micron-sized morphology on the metal surface can be designed in the machining process, and a micro-nano double-layer structure witha surface morphology similar to square terraces, rhombic terraces, rhombic cones or the like can be manufactured through multiple machining. The super-hydrophobic metal surface is prepared directly by wire electrical discharge machining assisted by low-frequency vibration, so that the preparation process is simple, the machining efficiency is high and the surface structure is controllable. Therefore, the method is a low-cost, simple and efficient preparation method.
Description
technical field [0001] The invention relates to surface processing of metal materials, in particular to a method for preparing superhydrophobic metal surfaces by wire electric discharge cutting. Background technique [0002] In recent years, superhydrophobic materials have attracted the attention of researchers due to their excellent properties in drag reduction, antibacterial, corrosion resistance, anti-icing, and self-cleaning. A superhydrophobic surface generally refers to a surface with a contact angle with water greater than 150° and a rolling angle less than 10°. The performance of the super-hydrophobic surface is that water droplets cannot stay on the surface stably, because it is easy to roll off the surface, and when rolling down, it can take away the tiny particles on the surface, so it has a similar self-expression as the surface of the lotus leaf. Clean function. Therefore, superhydrophobic surfaces have broad application prospects in equipment manufacturing, a...
Claims
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IPC IPC(8): B23H1/00
CPCB23H1/00
Inventor 褚旭阳曾湘衡全学军
Owner XIAMEN UNIV