This is a bronze sculpture of Eastern Han Dynasty

Chemical formula: Potassium dichromate 100 grams, 100 grams of copper sulfate, acetic acid, 50 grams of hydrogen peroxide 50 grams of distilled water amount, the amount of loess. The chemicals, distilled water, after mixing the loess, put into a heated barrel, power, heating barrel connected to the anode, cathode and bronze phase. Current control in 0.1mA ~ 0.3 mA, voltage control V 1 V 2, the heating temperature is 90 ℃ and down, after 10 days, within the surface layer of black bronze ancient foundation. This is a bronze sculpture of Eastern Han Dynasty.  Turn off the power, clean out of bronze devices. Black shell surface of the green rust-like erythema and clouds made way: with copper acetate, 100 grams, 100 grams of copper nitrate, ammonium carbonate, 100 grams, 150 grams basic copper carbonate, ammonium chloride, 50 grams of distilled water amount, method of operation Ibid. Current of 0.5mA, voltage 1 V, for 20 days.

Bronze surface to generate point-like, flake erythema, clouds like Green. The method of making green rust: rust before doing with silicone rubber to the need to retain the black shell, erythema, green cover, to prevent further chemical reactions break the ring of the original hull. That bronze statue was excavated in the tomb of Prince Guangling in Hanjiang County of Jiangsu Province in 1980. Chemical reagent formulation: 200 g ammonium carbonate, ammonium bicarbonate, 500 grams, 100 grams hydrochloric acid, ammonia, 100 g, the specific methods of operation: the ammonium carbonate, ammonium bicarbonate, hydrochloric acid dissolved in ceramic containers, and open the bottle of ammonia with high pressure water into the tank, and bronze hanging on the high-pressure tank, and then sealed pressure vessel and heated at the bottom, so the tank to maintain 2 to 3 atmospheres. Replaced once every month, chemical reagents.

After 3 to 5 months, the bronze will be generated on the surface of the green sheet or rust spots, there are some parts of the crystallization of rust. Disadvantages are: single color, rust is not strong sense of hierarchy. The chinese bronze sculpture is now housed in the Nanjing Municipal Museum.  Manual handling of law: general is the rust-colored rich, strong sense of hierarchy of rust on ancient bronze pieces, using ultrasonic vibration to tire out of copper, rust graft these imitation products in different parts of the complex, then high-grade ore color white cement added, to reconcile different rust, the rust-colored according to the ancient bronze level and shape of imitation goods in the complex interface, or rust-colored inlay made at the level of the lack of a sense of rich, vivid colors of various rusty.

Bronze with a damp cloth to wrap a good deal, into the steamer and steam for 3 to 5 hours, out to dry. Because the chemical make rust, so do not wear bronze smell polished. Be sure to protect polished copper tires original shape, pattern, try to make clear, natural decoration, fine and smooth. The original bronze dragon is 46cm high and 31.5cm long.  Old tires made of copper (old black hull, erythema, green rust to do the old method): only a perfect child but not beautiful copper coat, it can not be considered a fine copy. In the past to do the old method, 76 can not meet people's cultural heritage scientific world protect earth science heritage flavor, but slightly sour, the need to take the appropriate amount of fresh water into a paste tomb of soil, the re-Imitation into which 10 days, remove the clean up.