{"id":10811,"date":"2022-10-01T03:48:21","date_gmt":"2022-10-01T03:48:21","guid":{"rendered":"https:\/\/www.szlaser.com\/?page_id=10811"},"modified":"2022-10-01T03:56:25","modified_gmt":"2022-10-01T03:56:25","slug":"laser-on-material-processing","status":"publish","type":"page","link":"https:\/\/www.szlaser.com\/index.php\/wiki\/laser-on-material-processing\/","title":{"rendered":"Example of Laser on Material Processing"},"content":{"rendered":"

Example of Laser on Material Processing<\/h1><\/h1><\/div>

It is generally true to say that all organic materials, such as wood and leather, may be marked with a CO2<\/sub> laser; inorganic materials are typically marked with lamp-pumped and diode pumped, solid-state lasers.<\/p>\n

Wood, leather, cartonage: These materials are subject to ablation, creating a dark marking due to groove formation and the resulting shadow. The material itself shows slight carbonization.<\/p>\n

Metal: Almost any metal may be laser-machined. The laser is most frequently used for steel marking. Steel may be engraved, ablated or tempered.<\/p>\n

Copper, gold: The high reflectivity of these metals makes marking difficult. High laser stability is required in order to attain reproducible printing results.<\/p>\n

Silicon: Silicon is typically engraved by evaporation and melting of the material. Using green laser light instead of infrared wavelengths is particularly common (e.g. marking of the backside of ready-made\/packaged IC’s). This technique affords black or white silicon markings.<\/p>\n

Plastics: Plastics or their compounds are encountered in such a wide variety of combinations that it is very difficult to make a general statement about general plastic markability. The situation is complicated further by the fact that pigmentation too plays a decisive role in this context.<\/p>\n

Ceramics: Industrial ceramics may be marked with a Nd:YAG laser or a CO2<\/sub>\u00a0laser. The Nd:YAG laser, due to its high power density, can be used for material ablation or evaporation. Medical ceramics demand precise markings with a very narrow process window. High power density and laser stability are key factors for successful ceramics marking.<\/p>\n

Glass: Glass is not so easily marked. In cooperation with the Institute for Joining and Material Science in Jena in Germany, ROFIN has developed a special foil which can be burnt onto the glass surface by a laser beam. The result is a durable mark with high contrast. Another procedure for marking glass surfaces involves engraving with a CO2<\/sub>\u00a0laser.<\/p>\n<\/div>

Smart Cards<\/h3><\/h3><\/div>

Typical applications include the marking of Smart Cards including ID cards, phone cards for cellular phones, and credit cards. The laser may be used to print photographs, text, and\/or bar codes onto these plastic cards.<\/p>\n

There are two different marking techniques employed for this application:<\/p>\n