While laser marking technology has been commonly used in the manufacturing industries for many years in foreign countries, currently, it is most widely applied in the industry of auto and motorcycle parts, electronic components, hardware tools, sanitary ware, clothing accessories, and aerospace etc., among which the Chinese characters, figures, numbers, and letters are marked directly, including business names and trademarks, product specifications and models, shifts, serial numbers, and anti-counterfeit codes, in place of the traditional marking methods such as mechanical ones, and printed ones, chemical corrosion, ink jet marking ones.
As the developing laser marking technology, it is adopted by several manufacturers to print various images and texts in all kinds of industries, including industrial bearings, gears, all kinds of auto parts, hardware tools, integrated circuit chips, computer accessories, watches, electronic and communications products, home appliances, electric wire and cable, food packaging, jewelry, tobacco etc.
In the laser processing of auto parts, laser marking is one of the most widely used technologies. Most of the auto parts are metal materials. it implements either by the semiconductor laser marking machine or by the optical fiber laser marking machines. The laser marking technology is indeed an integrated product of contemporary high-tech laser technology and computer technology. Laser marking technology, also known as laser marking or laser printing, has been applied in auto parts in recent years. Compared with the traditional methods of mechanical marking, chemical corrosion, silk-screen printing, and ink-jet printing, the laser marking auto parts has a lot of advantages, including low cost, high flexibility, and computer system control, especially its outstanding feature that the marks produced will stay on the surface of the auto parts solidly and permanently due to the laser effect. Lastly, the laser marking system can implement a single product identification number for mass-produced auto parts, and then mark the bar code or two-dimensional code array to the auto parts, which helps effectively implement the process control and quality control in production, and ensures products' anti-counterfeiting.
1、1.Principle of laser marking machine for auto parts:
The basic principle of fiber laser marking machine is that when a continuous laser beam with high energy produced by the laser generator is applied to an auto accessory, atoms in the ground state will transit to a higher energy state; since atoms in the higher energy state are unstable and will quickly return to the ground state, when the atoms return to the ground state, they will release additional energy in the form of photons or quantum, and convert the light energy into heat energy, making the auto accessories melted or even vaporized, thus forming a graphic mark.
2.The advantages of laser marking machine
High precision: The laser processing can achieve accuracy within millimeters, and ultra-fine image marking.
Good efficiency: Due to its fast speed, the laser processing technology can greatly improve the production efficiency when integrated with automatic assembly lines and robots.
Excellent effect: The laser can complete the graphic marking and text mark of various accessories with different depths, and realize the effects of laser whitening, laser blackening and colourful laser marking
A wide range of materials: Laser marking machine is suitable for most auto parts and materials, whether metal or non-metal.