Etching | Surface Finishes for Metal and Plastic Parts

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Etching

Applicable to Metals,Plastics

Description

Laser etching, also called laser engraving or laser marking, is used to create a visible mark on the surface of many substrates, including metal, plastic, stone and glass. The process involves the use of a high-heat laser to modify the surface of the substrate.Electrolytic etching has the same goal as laser etching: to create an aesthetic mark on an object. However, this type of etching can only be done on metal.The first step in chemical etching is to laminate a sheet of metal, or the substrate, with a layer of light-sensitive resist. Once the photoresist is exposed to UV light and a positive image of the product is produced, the masked sheet is exposed to an etching solution. Unmasked areas of the sheet are removed by the etchant, and the masked areas stay protected, creating a part. The photoresist is removed from the finished part, or sheet of parts.

Technical properties

Colors

Applicable Materials

Alloy steel

Aluminum

Brass

Copper

Mild steel

Spring steel

Stainless steel

Titanium

Tool steel

Example of a Etching part

Key Aspects of Justway's Laser Etching:

Justway's laser etching process uses high-heat, precise laser beams to modify the surface of metal and plastic parts, creating durable markings like logos, serial numbers, and barcodes. It acts as a rapid post-processing finish, burning away material without using traditional chemical etchants.

Process: A laser beam melts and vaporizes the material surface, creating high-quality, permanent marks.
Applications: Ideal for data matrix codes, barcodes, and serial numbers on various, primarily rigid, materials.
Precision & Speed: Offers a fast, computer-controlled, and highly precise alternative to engraving.
Alternative Processes: While laser is featured, Justway also mentions other finishing techniques like silk-screening.

Differences from Chemical Etching:
Unlike chemical etching, which uses acid to remove material, Justway's laser method is a dry process that creates marks through, rather than removal of, material.

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