Modern new energy vehicles are gradually working hard in the design process, of which the car horn net is one of them, the traditional metal car horn net has rough appearance requirements, and the mesh requirements are not too strict, so the processed mesh is relatively large, the spacing is wide, this process has low processing cost, fast speed, simple personnel arrangement, the disadvantage is that the mesh is more burr, not easy to deform. The high mold cost makes many processing manufacturers wait for the plum to quench their thirst.
The etching process adopts the method of chemical etching fluid processing, which can combine the advantages of stamping and laser, and process the ultra-thin material with uniform mesh, no burrs, no curling and vertical hole wall. The complex shape of the car horn net products can also be etched without additional costs, smooth and uniform without burrs, and the flatness is maintained below 0.02.
The first step to determine the material, stainless steel is one of the commonly used materials, because of its good corrosion resistance and strength, suitable for the production of car horn mesh cover. When making a car horn net cover, the metal substrate needs to be thoroughly cleaned first to remove the oil and impurities on the surface and ensure the quality of the subsequent process. The next step is to apply the photosensitive ink, after the substrate is cleaned, a layer of photosensitive ink needs to be evenly applied to the metal surface, which will harden during the exposure process to form a protective layer. The next step is exposure, where the designed film is placed on both sides of the metal coated with photosensitive ink, and exposed by ultraviolet light, so that the pattern on the film is transferred to the metal surface. After exposure, the metal plate is developed and the unhardened photosensitive ink is removed, exposing the underlying metal part and preparing it for etching.
Next comes chemical corrosion, which uses a specific chemical etching solution to etch the exposed portion of the metal to form the desired mesh pattern. This process achieves high precision and avoids the disadvantages of laser or stamping. It is usually completed with professional etching equipment, and the entire proofing process cycle is about 5 to 7 days. The final process of grinding and spraying: after the completion of etching, it is necessary to polish the mesh cover to remove burrs and improve the appearance quality; It is then sprayed to enhance corrosion resistance and aesthetics.
With the progress of science and technology, the production process of loudspeaker mesh cover is developing in the direction of higher precision, lighter weight and better appearance.