金属化学蚀刻机的步骤Steps of metal chemical etching machine

　　工业上金属等离子刻蚀机的化学腐蚀通常有下述四个步骤：

　　1.清洁处理：其目的是将待腐蚀零件毛培表面的各种污渍清洗干净，以保证防蚀层能与金属表面的粘附力均匀一致，并使蚀刻速度均匀不变。常用的清洁处理方法有：有机溶剂清洁、碱性化学清洁、酸性化学清洁、超声波清洁及电解清洁处理等。在使用过程中可根据零件金属材料类型及零件表面的污染程度分别选择。

　　2.防蚀处理：其目的是保护那些不需要腐蚀加工的表面，使需要腐蚀加工的金属表面完全暴露出来，而被与金属材料相适应的腐蚀剂所腐蚀。这一工序要求：防蚀材料要与金属表面粘附牢固，并在整个腐蚀过程中不会发生防蚀层脱落现象。防蚀处理主要包括：丝网印刷防蚀技术、照相化学防蚀技术、移印防蚀技术、图形电镀防蚀技术、激光光刻防蚀技术及刻划防蚀层技术。

　　3.防蚀加工：是将被腐蚀金属零件按图纸要求制作好防蚀图文后，放入腐蚀机中进行腐蚀加工的过程。在这一工序中主要控制：腐蚀剂浓度、腐蚀温度、时刻时间等。金属腐蚀加工根据图纸要求可分为五种基本类型,即：整体腐蚀、选择腐蚀、多台阶腐蚀、锥度腐蚀和化学切割下料。金属全面腐蚀不需要进行防蚀处理，零件经清洁处理后即可进行腐蚀加工。

　　4.清除防蚀层：零件从金属腐蚀机中取出后，使用溶剂、碱液或其他清洁剂将零件表面的防蚀层去掉。

The chemical corrosion of the metal plasma etching machine in industry usually has the following four steps: 

1. Cleaning treatment: the purpose is to clean all kinds of stains on the surface of the parts to be corroded, so as to ensure that the anti-corrosion layer can be uniform with the adhesion of the metal surface, and the etching speed is uniform. Common cleaning methods include: organic solvent cleaning, alkaline chemical cleaning, acid chemical cleaning, ultrasonic cleaning and electrolytic cleaning. In the use process, it can be selected according to the type of metal material and the pollution degree of the part surface.

2. Anti corrosion treatment: its purpose is to protect the surfaces that do not need to be corroded, so that the metal surfaces that need to be corroded are exposed completely, and are corroded by the corrosive agent suitable for the metal materials. This process requires that the anti-corrosion material adhere to the metal surface firmly, and the anti-corrosion layer will not fall off during the whole corrosion process. Anti-corrosion treatment mainly includes: screen printing anti-corrosion technology, photo chemical anti-corrosion technology, pad printing anti-corrosion technology, graphic plating anti-corrosion technology, laser lithography anti-corrosion technology and etching anti-corrosion layer technology. 

 3. Anti corrosion processing: it is a process that the corroded metal parts are put into the corrosion machine for corrosion processing after the anti-corrosion graphics and text are made according to the drawing requirements. In this process, the concentration of corrosion agent, corrosion temperature and time are mainly controlled. According to the requirements of drawings, metal corrosion processing can be divided into five basic types, namely: overall corrosion, selective corrosion, multistep corrosion, taper corrosion and chemical cutting blanking. No anti-corrosion treatment is required for all-round metal corrosion, and parts can be processed after cleaning. 

4. Remove the anti-corrosion layer: after the parts are taken out from the metal corrosion machine, use solvent, alkali solution or other cleaners to remove the anti-corrosion layer on the surface of the parts.