PHOTO-CHEMICAL ETCHING PROCESS STEP BY STEP
Chemical Etching Process By Video
What’s the photo chemical etching?
Photo chemical etching, also known as photo chemical machining or photo chemical milling, a manufacturing process used to produce intricate metal components & parts with high precision.
Step 1 Choosing Materials
Photo chemical etching can be apllyed almost any sheet metal. Choose the material according to customer’s requests.
Step 2 Cleaning
Clean the sheet metals which has been cut. This step is to remove the oil stains on the surface.
Step 3 Screen printing
A (UV) light-sensitive photoresist is applied onto the surface of the metal substrate. It can protect the metals which are not be etched.
Step 4 Exposing
The stencil film is placed over the photo-resist-coated metal substrate. The design is transferred to the photo-resist by exposing the sheet to UV light through a stencil film.
Developing 5
This step removes the unexposed areas of the photo-resist, leaving behind a patterned layer corresponding to the desired part design.
Step 6 Etching
The metal substrate is then immersed in an etchant solution, which chemically dissolves the exposed metal areas not protected by the developed photo-resist.
Step 7 Stripping
Once the etching is complete, the remaining photo-resist is removed from the metal surface, typically through a stripping process.
Step 8 Stripping
Use image measuring instrument to check the appearance and dimension.
Step 9 Finishing
The resulting part may undergo additional finishing steps such as deburring, cleaning, and surface treatment to achieve the desired final properties and appearance.
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