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.

metal materials

Step 1 Choosing Materials

Photo chemical etching can be apllyed almost any sheet metal. Choose the material according to customer’s requests.

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Step 2 Cleaning

Clean the sheet metals which has been cut. This step is to remove the oil stains on the surface.

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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.

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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.

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Developing 5

This step removes the unexposed areas of the photo-resist, leaving behind a patterned layer corresponding to the desired part design.

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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.

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Step 7 Stripping

Once the etching is complete, the remaining photo-resist is removed from the metal surface, typically through a stripping process.

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Step 8 Stripping

Use image measuring instrument to check the appearance and dimension.

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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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