Metal Etching Is An Indispensable Technique

Metal etching definition: etching (also known as metal corrosion, or photochemical etching. Is the use of metal materials to remove the photochemical reaction technology, Metal Etching is the extension of the stamping process is a more specialized embodiment of etching.

The principle of metal etching: refers to the process through the exposure process, the product of the graphics transferred to the metal plate, the etching area will be protected, do not remove the protective film exposed to the metal part of the chemical solution, Metal Etching and then play a role in the chemical solution Or half-engraved or hollow forming effect. Zhuo Lida has been continuously improved and the development of process equipment, is currently used in aviation, machinery, chemical industry, electronic sheet parts precision etching products processing, Metal Etching especially in the semiconductor process, etching is indispensable technology.

Metal etching is first on the substrate with silk screen or screen printing on the substrate to protect the need to cover the site, and then chemical or electrochemical way to erase unwanted parts, and finally receded the protective film to get a kind of processing products The

Metal etching is a key step in the process of producing signs, circuit boards, metal crafts, metal engravings. The original technology industry production and application is in the printed silk version, Metal Etching because the silk screen of fine and dense thread, machining is difficult to complete. Different metal materials, different nature, different etching pattern accuracy, different etching depth, the etching method used, Metal Etching the process and the etching solution used is very different, the use of photosensitive materials are also different.

Metal etching method

1, chemical etching method - with strong acid or alkali solution directly to the workpiece is not protected parts of the chemical corrosion, Metal Etching which is currently the most used one method, the advantage is that the depth of etching can be shallow and shallow, very fast etching.

2, electrochemical etching - This is an anode to do the work, the use of electrolyte power, anode dissolution, so as to achieve the purpose of etching methods, Metal Etching the advantages of environmental protection, the environmental pollution is very small, the health of the workers to the health of harmless, The disadvantage is that the etching depth is small, large area etching, the current distribution is not uniform, the depth is not easy to control.

3, laser etching method - the advantages of linear edge neat non-pitting phenomenon, but the cost is high, about twice the chemical etching method. Metal Etching Printed circuit board industry, printing paste, the use of stainless steel wire mesh is mostly made by laser etching method.

The process of metal etching process is explained

The type of metal is different, the etching process is different, but the general process is as follows: metal etching plate → degreasing → washing → etching → washing → drying → screen printing → dry → flooding 2 ~ 3min → etching pattern Text → Wash → Deaerator → Wash → Pickling → Wash → Electrolytic → Wash → Dyeing or Plating → Washing → Hot Water Washing → Drying → Soft Cloth Light (Smoothing) Light → Smoothing Paint → Drying → Inspection → Finished Packaging.