The military, aerospace and medical applications rely heavily on security and safety at high levels at all times, because anything can happen. That is where laser making comes in; in the field of direct part marking, lasers do leave an impressionable effect that will allow for easier tracking, tracing and overall control on the parts. However, laser marking is not restricted to critical affairs only; the need has been extended to individual demand for the use of laser part marking machines. The use of laser marking on individual components makes the task of tracking the progress during different stages of assembling, all throughout manufacturing.
When it comes to direct part marking there are various options available including use of dot peen marking machines, bonding, chemical etch, lasers and ink jets. The advantage laser marking has over other methods of direct part marking is that the marks are more permanent. Although the processes are left the option of using labels, they fall short of the convenience offered by lasers.
Laser marking can be done in different ways such as engraving lines or any other shape on the material. The laser can also remove and coating or paint in order to reveal the underlying markings. Then there is the processing of annealing that cause change in the desired pattern on a surface. The process of engraving vaporizes some of the materials on the surface, creating dimples that subsequently form the right shape. The lasers are able to create different designs including ornamental designs, identification marks, labels and even textures. It is through this process that golf club heads are customized by laser engraving names, dates, and any other relevant information specified by the owner of this clubs.
In some instances, there is the need of heating surfaces in order to create a smooth surface to work on during the marking. Usually bright steel turns into black while aluminum turns into white. This kind of method makes sure that the surface is not affected but also leaves a mark that is visible enough. This kind of method is highly used in medical specific part marking machines and especially those which are implantable medical devices and medical instruments. Since these devices do not need holes, grooves or porosity that may be breeding ground for bacteria. On data marking 2-D data matrix are marked on two sides of the surfaces.
Technically, a data matrix is made up of a many rows of light blocks and dark blocks. There are different kind of data matrix that have been invented and one of them a 2-D format that is used in marking –is made up of square array that hall all the dark blocks appearing along two adjacent lines, that appear as solid lines. Then on the other two sides are the alternating light and dark blocks. This configuration is useful in helping the machines determine the correct orientation of the mark. The 2 –D matrix is scalable to fit desirable specifications in order to meet the needs of the product to be marked.
The Functioning of the laser part marking marking system is that in order to mark a part, the desired part is encoded in the in the matrix by the software of your marking system. The reader takes picture of the 2-D matrix after reading and then the reader’s software determines meaning the combination of the light and dark block. You can also make the widely used bar one dimensional bar codes although the data matrix can carry more information than a bar code.