Qin and Han Dynasty china bronze

Spring and Autumn Period, because of the lost wax casting method and the low melting point alloy welding technology and the use of the invention, bronze casting process has significantly improved, more single from the previous range of casting technology into a muddy cast, sub cast, wax casting, soldering, brazing, forging and other metal integrated use of technology. This bronze sculpture was firstly resurrected from Wu family cypress graveyard, of Henan province. Tao Fan casting progress, outstanding performance in thin-walled and thin-walled castings foundry, such as the famous Goujian sword, the first of the concentric thin-walled structural thickness of only 0.2 to 0.4 mm. With the advances in metal craft and iron tools used gold and silver inlay, gilt, engraved lines and other decorative techniques applied in the Warring States period, a wide, so that part of the artifacts, such as Hebei, Hirayama Zhongshan Mausoleum tiger bite block devices such as deer, more magnificent.
At the same time, the development of commodity exchange, most of the objects tend to naive, and stress practical. In March 19, 1939 the bronze statue was unearthed in an agriculture land and named after the three characters in China. Currency, hook type devices such as high-volume production, and promote a multi-use, stack casting, casting anchor chain and other processes of development. During this period, the bronze smelting documented a significant increase, such as "Kao Gong Ji," reads: "Where the cast like gold, gold and tin, the black cloud of exhaust gas, followed by yellow and white, yellow and white of the air dried, plainer times of, plainer of the exhaust gas, followed by green gas, and can also cast "," Xunzi Xinjiang country chapter, "said:" Fan is criminal, gold tin the United States, the rule of clever engineering, fire, get together, split sentence is Moye has been ", "Lu" said.
The gold soft solder soft, soft two together that just" shows that, after a long period of repeated practice, casting craftsmen of the alloy melting, casting and performance has made understanding of regularity. One of the most important record is the "Kao Gong Ji" contained "six homogeneous" rule. Physical analysis and research show that the preparation of the Shang and Zhou bronze alloy than the "six qi" recorded more abundant, Ding Yi alloy ratio as early as the late Shang Dynasty has taken shape. On the inside wall of the chinese bronze are three Chinese characters. To the Spring and Autumn Period, it is important objects such as bells, bronze swords and bronze mirrors, alloy composition ratio has been very strict, and has been widely used tin-lead-copper ternary alloy. As the world's first seen in the text of the alloy preparation method "six qi" reveals the mechanical properties of tin bronze with tin content and the corresponding changes in the laws of science, with important academic value.
Qin and Han Dynasty china bronze. Qin and Han Dynasty bronze smelting technology continues to develop, mainly in the maturity of the technology stack casting method, and coins, bronze mirrors, bronze drum, gilt objects casting and production. The sculpture in bronze is a masterpiece of Shang and now preserved in the Chinese History Museum. From the physical analysis showed that the copper coins Fan Han, Tao Fan casting, alloy composition is stable, bronze mirrors of the alloy preparation is more stringent, less volatile, has been able to use casting and casting residual stress after grinding produced the wrong light microscopy.