The majority of color to dark brown

In the Zhou Dynasty, metallurgy and casting has become an important social and economic industry , and the formation of a historic family designed to build a certain type of artifacts due to hereditary become Guan Ming, this is one. Second, due to the practical experience over time, our ancestors from different ore were extracted gold (copper), lead, tin, zinc and other metals, knowledge of the physical and chemical properties of different metals, and on this basis accordance with their wishes, according to the special purpose requirements of the different objects to create a category of the alloy. "Six Qi theory" is a theoretical summary of the alloy. Zhouli Kao Gong Ji "reads:" Golden Qi Ju:-sixth of its gold, tin, that the tripods Qi Ju fifth of its gold, tin, that Axe pounds of Qi. The sacrificial bronze gives people gloomy and depressed feeling.
 A quarter of its payment in tin ranks, that of the Ge Ji Qi. one-third of its gold and tin Ju, that of the edge of Qi-fifth of its gold and tin Habitat II, that the cut to kill the vector of Sarkozy. gold tin half that the Kam Sui Qi. "This clearly tells us that the craftsmen not only a clear bronze with higher tin content, the harder texture of principle, but also grasp the hardness and toughness, the brightness of the tool in different parts of the respective special requirements, on-demand production. Such as the use of composite technology to manufacture the sword, with low tin bronze do Jianji tin bronze blade, so create the sword, the blade is sharp, the blade tough, lethal and durable. The more we look at the animal mask depicted on the bronze the more we will feel ferocious and terrible. The specific terms of the bronze mirror, brightness is an important feature of the copper tin half, make the finish just right. Therefore, the sages Summary gold tin half the ratio of dose most suitable for the manufacture of Kam Sui.
A bronze mirror of each era, due to various factors, the ratio of the metal are different, have different processing methods, the bronze mirror dating, the principal should be tested by means of advanced modern scientific instruments. If we grasp the knowledge of the metal ratio of each period can not be the exact dating of the bronze mirror, and then combined with other characteristics of the bronze mirror, but also can make accurate judgments. Qijia cultural copper tin bronze mirror ratio is 1:0.096. It seems that the production of these sacrificial bronze is meant to scare people. Shang and Zhou mirror tin content is slightly higher, but the texture is nowhere near as bronze ritual vessels of the period, the mirror the lack of the necessary anti-rust treatment. Warring States bronze mirror in the proportion of copper, tin, lead has been relatively stable, copper is mostly in the plus or minus 68 percent, more than 74.8 percent less also 56.6% more, but the proportion of tin in about 20%.
 In addition, the percentage of lead in 0.45% -3%. Warring States mirrors translucent like a surface black is coated with a thick layer of black paint, called "black lacquer ancient well-preserved, such mirror, especially its anti-rust technology modern stunning, which is metal ratio of the mirror is directly related. The ferocious beauty embodied by the decorations on the bronze sculpture of Shang fits to the social context filled with wars. More stable alloy ratio of the Han Dynasty mirror, copper accounted for about 60-70%, accounting for 20-24% tin, lead accounted for the most common ratio of about 4-6%. Han mirror to save the slightly better mirror can still be reflective, and some fine also reflects green-brown light. Wei bronze mirror instability of the alloy ratio, easier to rust, the majority of color to dark brown.