How about metal etching? I'll take long steps
1, chemical etching method with strong acid or alkali solution directly on the workpiece is not protected parts of chemical corrosion, which is currently a method to use the most, has the advantages of etching depth can be shallow deep etching, very fast, disadvantage is corrosion liquor has great pollution to the environment, especially the etching solution is not easy recovery. And on the health of workers is harmful in the production process.2, it is a kind of electrochemical etching the workpiece as anode, electrolyte using electricity, anodic dissolution, so as to achieve the purpose of etching method, the utility model has the advantages of environmental protection, little pollution to the environment, to the health of workers is harmless, etching depth is small, a large area of etching, the uneven distribution of current the depth, is not easy to control.3, laser etching method has the advantages of linear edge neat side etching phenomenon, but the cost is very high, about double the chemical etching method. The printed circuit board industry when the paste is printed, with stainless steel wire mesh is mostly produced by laser etching.
Is a key step in the production of signs, circuit board, metal crafts, metal engraving etc. in the process of industrial production. The initial application is in the printing plate for the Silk Road, the Silk Road Silk fine and dense, mechanical processing is difficult to complete. The properties of different metal materials, different etching pattern precision, etching depth different etching methods, the process and the etching liquid formula is not the same, the photosensitive resist material is also different.
Is the first metal etching on the substrate by screen printing or printing the need to protect the substrate part of the cover, then by chemical or electrochemical erosion of unwanted parts, finally out of protective film, get a way of processing products.
