It was found that laser removal stone relics surface dirt has its unique advantages

Application of laser cleaning of stone and stone sculpture stone age-old art of high-grade, because of its very fine and fragile surface structure, becoming the first laser cleaning technology application areas. It was found that laser removal stone relics surface dirt has its unique advantages, it can be very precisely controlled beam moves in a complex on the surface to remove dirt without damaging the stone artifacts. For example: in September 1992 belongs to the UNESCO World Heritage conservation organization created to commemorate the twentieth anniversary of the organization, the implementation of the cathedral on the famous British Yamin repair works. Benjamin Basilica of Our Lady of the west side of the door works fine marble carving is the key. Our Lady of the door in a one-year repair works, Molybdenum tube personnel by means of a laser, the laser beam to remove the cover on the marble carving patterns on black dirt layer a few millimeters thick, the color of the original marble surface reflected so beautifully carved reproduction glory. Another example: the UK's most important collection of stone at one of Britain 斯布伦蒂尔 stone collection after laser cleaning, also got the same results. It was observed with an electron microscope after laser cleaning stone surfaces after laser cleaning stones found no change in the structure, the surface being cleaned both smooth and flat, without damage. This is with the use of microparticle injection method (sandblasting) after cleaning the surface is completely different. Microparticle injection method after cleaning marble surface structural damage is difficult to avoid, especially for existing sulfate scale layer marble surface. Electron microscopic observation also found that the laser irradiation, the properties of subsurface rock material neither degradation nor changed. Currently, with the laser cleaning of limestone, marble and other stone material grade work surface dirt has become a new promising business projects.