Tang Sancai and glazed pottery are fired at a low temperature of 1000 degrees Celsius or less. The carcass is made of clay. Clay is mainly a hydrous lead silicate mineral, which is formed by long-term weathering and geological action of feldspar rocks in the earth's crust. Clay has unique plasticity and combination. After water transfer, it becomes a soft mud, which can shape various shapes and become dense and hard after firing. The clay produces different regions, the mineral composition of the inclusions is variable, and the structure is also very complicated. Therefore, the chemical composition of the clay has a certain influence on the color and hardness of the sintering. Tang Sancai and glazed pottery bodies are porous and absorb moisture. The higher the porosity of the green body, the more severe the moisture absorption and expansion. Since most of these items are sacrifices, they are buried underground for a long time, and a large amount of salt bases and other impurities in the groundwater penetrate into the interior of the object and deposit in the pores. After the materials were unearthed, they were not properly treated. In addition to the unstable temperature and humidity of the storage environment and other unfavorable factors, the pores in the Tang Sancai or the glazed pottery tires formed salt crystals, which caused the volume of the pottery to increase. A large mechanical force, which causes the glaze to fall off, and the tire is loose and broken. Collectors of this type can be hardened by collectors themselves. Before processing, observe the damage degree of the utensils. Do not blindly use various chemical materials. First, make a repair and maintenance plan. The glaze color is not loose and loose, but the surface is white fluffy material and the glaze is not glazed by hand, indicating that the glaze is relatively strong; otherwise, the glaze is loose. In different situations, the maintenance methods adopted are different. E.g: For the glazed surface is relatively firm, the blank tire can be dense and hard. Two methods can be used: one is distilling water to soak the salt removal method: soak the equipment in distilled water, change the water in two or three days, soak it three or four times, then take it out. Dry, the surface can be protected with a protective layer. The second is pulp paste method: the paper is chopped, soaked in deionized water, replaced once a day, and can be used after 3 days. Pulp paste is applied to the utensils to be salt-removed. The pulp is changed once every 2 days, and after 3 times, the surface is coated with a protective layer after removing the pulp. The glaze is not good, and the green body is loose. This type of glazed pottery cannot be easily washed with water. Conditional decompression and infiltration reinforcement method can be used to place the object in a vacuum dryer for infiltration and reinforcement. The formulation and ratio of the reinforcing agent should be matched according to the degree of crispness of the ceramic tire, the thickness of the pellet, and the thickness of the pottery. After reinforcement and drying, the reinforcing agent should not be allowed to spread on the surface, appear luster, and can not change the color of the item. It can also be reinforced by spraying, brushing, dropping, etc. After the reagent is prepared, it is reinforced by air pump spraying, brush brushing and needle drop in the inside and outside of the object. Do not rush too hard during the reinforcement, and slowly proceed according to the absorption of the utensils, from partial to whole. Reinforce with an infrared lamp to bake until the solvent evaporates. The excess liquid on the reinforced surface can be wiped off with acetone. The soaking and surface strengthening agent can be: 3% trimethyl ketone acetone solution; 5-15% polyvinyl acetate alcohol solution; 3% in cellulose alcohol solution; 2% nitrocellulose acetone solution; 5% polyvinyl alcohol solution and many more. Remove the glazed dirt, the limestone coating can be scrubbed with 2% dilute hydrochloric acid solution; the gypsum covering can be thermally foamed with ammonium sulfate solution; the siliceous covering can be wiped with 1% hydrofluoric acid solution; food spoilage, smoke For stains, scrub with ether, acetone, toluene, sodium carbonate solution, etc. All cultural relics should be soaked in distilled water. Water Dispenser Faucet,Hot Cold Water Dispenser Faucet,Kitchen Faucet With Water Dispenser,Hot And Cold Water Dispenser Faucet AIHUI Sanitary Ware , https://www.fsaihuisanitary.com