Metal etching processing plant in the etching process often encounter some common problems, these problems also lead to etching out of the product quality of the yield rate of high or low, after all, etching is through the chemical agent through the solution attached to the corroded metal through the development, exposure and other processes to derive the final product.

1．Metal etching processing before the processing link: metal in the etching pre-treatment of the substrate is required to ensure the cleanliness of the metal surface and coating links, coated ink needs to be clean processing, if the metal substrate surface has certain scratches, scratches, etc. can be treated by polishing, the integrity of the substrate is determined by the etching out of the product yield guarantee.

2．Metal etching process etchant concentration stability: the stability of the etchant concentration determines the depth and shallowness of the etched products, etchant concentration is too high will lead to serious side corrosion, etched products will appear deviations in accuracy, if the etchant concentration is too low, then the etched products will appear etching accuracy is not enough, so in the etching processing plant often have the practice of filing proofing test, adjust and set the concentration of etchant to improve its stability.

3．Metal etching process etching process temperature, rate stability: etching process temperature is too high will lead to excessive corrosion, etching temperature is too low will lead to corrosion of the metal scale is insufficient, so the stability of the temperature in the etching process is also the etching process needs to be adjusted. At the same time, the rate of etching must be within a stable interval, so as to protect the product from etching too fast and the etched metal can not reach the precision, etching rate too slow and lead to too high a solution concentration more etching excess.

4．Metal etching process is the project management process with the process: etching needs to involve relatively more links and personnel, each link needs to be strictly controlled, good project engineering progress, standardized, modular management of each link data, make the corresponding records.