When you are looking to buy a diode laser engraver, there are many points to consider. One of the main attributes that differentiate systems on the market is the type of laser tube that the machine uses as the laser source. The two main options you'll come across are water-cooled glass tubes and air..
Today, many household items, household goods and jewelry products are made of metal because metal is strong and usually impervious to weather . However, not only are everyday items and decorative items often made of metal, but signs and plaques are generally made of stainless steel or brass. Due to..
Anodized aluminum is a very versatile material with high contrast when laser engraved for metal, moderate abrasion resistance, and corrosion resistance. This makes it ideal for making logos, plaques or machine labels. It is also ideal for barcode and QR code applications due to its high contrast aft..
Compared with other machines, laser engravers are the perfect choice to achieve precision work. With the help of a laser beam, laser engraving will perfectly carve and etch images or designs on soft metal, wood, rubber, acrylic and other materials (especially delicate ones) with higher accuracy than..
Which Metals Can You Laser Engrave? Stainless Steel Stainless steel has a great contrast when laser marked, and it may also be laser etched. The most popular stainless steel grades are 316 and 306 stainless steel. Stainless steel is a popular metal for low-cost laser engravers, and we've previousl..
Laser Cutting of Metals
The energy of a fiber laser beam is easily absorbed by most metals, causing the material directly in the path of the laser beam to rapidly heat up and melt. If the laser power is high enough, the laser beam will melt completely through the material. High-pressure air jets are used to remove the metal as it melts, resulting in smooth and straight edges with minimal heat-affected zone.
Laser Engraving of Metals
The power of the fiber laser beam can be limited in order to remove (engrave) material to a specified depth. Often multiple laser engravings are required. Common depths for metal laser engraving are 0.003 to 0.005 inches (75 to 125 microns). However, removing so much metal at once may result in melting or deformation. Therefore, metal engraving is usually done in multiple batches. The laser engraving process can be used to create permanent identification marks that cannot be removed by heat or abrasion.
Laser Marking of Metals
Laser marking is a common application for metals. Laser cutting and engraving are also possible with sufficient laser power.
Laser marking changes the appearance of metal surfaces without removing material. There are several different types of laser marking available for metals. In direct marking, the laser beam energy heats the metal surface to oxidize it. This oxidation causes the metal exposed to the laser beam to darken, creating an indelible black mark. Fiber lasers can also be used to create bright or polished marks on metal surfaces. Metals can also be marked indirectly by adding coatings such as metal marking compounds or removing coatings such as paint. Laser marking can be used to convey information such as serial numbers or logos.