Raymond Laser Marking Machine

Raymond Machine

Laser surface marking technology is a kind of laser processing technology used earlier. According to the way of laser and material interaction, it can be divided into two types: surface marking and material conversion. It uses a shallow layer of evaporated or ablated material surface to produce the required markers.

 Compared with the traditional marking technology, its main advantages are: (1) using computer control technology, easy to change the marking content; (2) using laser processing means, delicate marking, to meet the requirements of high efficiency and fast pace of modern production; (3) wide adaptability to jewelry processing materials, can be made on the surface of a variety of materials very fine marking, durability is very good, and between the workpiece. With external force, the original precision of jewelry workpiece can be guaranteed; (4) flexible processing mode, which is suitable for the needs of small-batch single-piece production, but also meet the requirements of large-scale industrial production; (5) no pollution source, which will not have harmful effects on the environment. Therefore, laser marking technology plays an important role in improving the quality of jewelry products, production efficiency and automation level, reducing pollution and material consumption. Laser engraving works in a continuous or repetitive pulse mode. In the process of engraving, laser beams gather into very small points (the minimum diameter can be less than 0.1 mm), so that a high power density can be achieved at the focal point [8-9]. At this time, the heat input (converted from light energy) of the beam far exceeds the heat radiated, transmitted or diffused by the material. The material is quickly heated to the gasification temperature and evaporated to form a void.

 With the relative linear movement of the beam and the material, the voids continuously form a very narrow slit. In the process of carving, auxiliary gases suitable for materials and protective gases should be added to prevent chemical reactions with surrounding air. Laser engraving can be regarded as a straight line extension of laser marking technology. Under suitable focusing conditions, some lasers can reach laser points with a diameter of 30 microns. Therefore, very small images can be carved very accurately, marking and printing can be made in a small area of 1 mm square to meet the individual needs of jewelry, marking also has the function of anti-counterfeiting. Laser engraving can be done on a plane or a curved surface with a depth of several millimeters. With the progress of laser technology, the power of laser engraving machine is becoming stronger, and more types of metal materials can be engraved. Au has very high thermal conductivity, so it needs more energy to hit in order to melt the hit point.