Prospects of laser welding in advertising Channel letters making:
With the booming of global advertising industry, metal letters has gain more popularity among customers because of its colorfulness, attractiveness, heating-proof, frozen-proof, no deformation, fadeless (8-10 years color preservation), corrosion proof, rain-proof, and spontaneous combustion proof and some other good features. AD metal letters are made of stainless steel, aluminum, copper or other metal sheet being cut, polished, hemmed, and welded. The core feature of AD metal letters is being rustproof, with long life span and dimensional looks. It’s widely used in LED illuminated billboard, exterior/interior signs, branding, door plate and etc.
Regular combination and fixing of metal letters are made by glue, rivets or soldering, but all of them have big defects. Metal letters combined by glue always get loose when time pass , especially outdoors’. Fixing by rivets sounds good, but not good-looking. Soldering is not a environmental-friendly way of fixing metal letters because of the poisoning gas produced when processing.
However, laser welding technology makes two metal sheets become one only by a few melting spots. Laser welding has little heat-affected zone on the welding work-piece and it is instant melting and concreting features makes high distortion resistance which makes it an ideal and environmental-friendly processing tools for sign advertising industry.
Features and advantages
1. Compact design with Red light fast positioning, CCD display, microscope optional.
2. Welding result is smooth with small heat-affected zone ,no need further grinding and polishing process ,saving time and labor cost.
3. High-performance and fast speed laser welding of metal advertising channel letters.
4. Able to deal with complex, profiled, or tiny letters.
5. User friendly ,easy to set up and use the laser welding machine with little special skill required to operate.
6. Limited maintenance cost. (Only xenon lamp and protective mirrors need to be replaced.)