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Application of laser cleaning on cultural relics

Application of laser cleaning on cultural relics

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For the cleaning of cultural relics, there are many traditional cleaning methods, but most methods have many different shortcomings, such as: slow efficiency, which may damage the cultural relics. Laser cleaning has replaced many traditional cleaning methods.

So what are the advantages of laser cleaning compared to traditional cleaning?

What are the advantages of laser cleaning for the cleaning of cultural relics?

I will answer you below

Traditional cleaning treatment generally has the following methods:

1. Washing

For utensils with solid texture and not afraid of water immersion, such as: pottery, porcelain, brick, tile, stone, copper, iron, bone, tooth, jade, wood and other cultural relics and antiques, the dirt attached or contaminated on the surface can be used Distilled water wash. The fixed objects on the unearthed utensils are relatively hard, and it is not easy to wash them off at one time. Do not use metal or hard objects, such as knives, shovels and other tools to forcibly remove the fixed objects on the utensils during cleaning, so as not to damage the utensils and make the surface appear undue. scratches and even damage to the utensils. Softer bamboo and wood can be used to make repairing utensils (bamboo, wooden knife, bamboo and wooden shovel, bamboo and wooden needle, etc.) and remove them little by little, so as not to damage the utensil itself.

2. Dry cleaning

If there are stains on textile cultural relics, which may fade when washed with water, they should be scrubbed with gasoline or other substances, or sprayed directly on the stains with dry cleaning essence. Before using dry cleaning essence, a test should be made. When dry cleaning, it is best to start with inconspicuous places or corners, and then process the center or obvious parts of the tissue.

3. Dry wipe

For some objects that are afraid of water and some unearthed objects, in order to maintain the natural color of the original objects due to the erosion of the earth for many years, it is not suitable to rinse with water and medicine. For this type of utensils, gently wipe with a soft damp cloth.

4. Air drying

For paper items and some fabrics that are not suitable for washing or dry wiping, the air drying method should be selected to blow off the dust and moisture on the surface. When drying outdoors, you should pay attention to weather changes, avoid prolonged exposure to strong sunlight, avoid strong winds, and keep abreast of temperature and humidity changes. At the same time, it is necessary to avoid smoke and dust pollution near the chimney, to prevent bird and insect damage under the tree, and to avoid the willow flowering season for wind drying to prevent pollen contamination and so on.

5. Mechanical dust removal

For larger, bulky and irregular objects, such as furniture, felt blankets, hollow objects, etc., mechanical dust removal such as vacuum cleaners can be used; for larger stone carvings, sculptures, etc., high-pressure air pumps can also be used while vacuuming , to blow off the dust that is not easy to be absorbed by the vacuum cleaner.

6. Drug cleaning

Mainly used for antiques and unearthed cultural relics preserved in various harsh environments. These utensils have been buried underground for a long time, and they are seriously rusted by various environments and harmful substances. Due to the different impurities in the unearthed materials and different corrosion conditions, experiments should be carried out when using self-prepared liquid medicine, and then use it after obtaining obvious effects; due to the difference of each piece of equipment, different medicines and different medicines should be used. method.

The above-mentioned six cleaning methods will cause irreversible damage to cultural relics, but it is only a question of the degree of damage.


After laser cleaning                                                                                           Before laser cleaning

Laser cleaning of cultural relics is different. Laser cleaning uses the characteristics of laser beams. The laser beam can be concentrated into different sizes of spot diameters through the concentrating system. Under the same conditions of laser energy, laser beams with different spots can generate energy. Different densities or power densities allow easy control of the laser energy required for cleaning. Lasers can achieve a high concentration in time and space. Laser cleaning takes advantage of these features to effectively remove contaminants. The pollutants are instantly peeled off from the surface of the cultural relics, so as to realize the cleaning of the cultural relics.

Features of cultural relics laser cleaning machine:

1. Wide range of functions: a “full-featured” laser cleaning machine, which can be used for cleaning cultural relics of almost all materials such as organic, inorganic and metal.

2. Efficient operation: It can be equipped with two types of laser heads, “point” and “line”, with unique advantages, stronger functions, and higher processing efficiency.

1) Point-shaped laser head: can generate a point-shaped laser beam with a diameter of 6mm (standard equipment);

2) Linear laser head: 3×11mm linear laser beam can be generated (optional). Small size, light weight, convenient for indoor or outdoor field use.

The cleaning of cultural relics mainly scans the surface of the object through the vibration wave of short laser pulses, so that the surface layer of soil, dirt, carbon deposits, metal rust, organic or inorganic impurities is pulverized and evaporated. While removing the contamination layer/aging layer on the surface of the object, ensure that the underlying substrate (cultural relic body) is not damaged or peeled off. Among the various technologies and methods for cleaning cultural relics and restoring their original appearance, only laser cleaning can achieve precise positioning and precise cleaning.

If you need to clean cultural relics, please feel free to contact us by email or WhatsApp through this website.


Post time: Sep-02-2022