What Causes Green Patina on the bronze?
Warring States bronze sword, usually in the shape, origin, and the alloy chemical composition. The author is a combination of simulations, seriously discussed the “Fan casting technology, the mechanical properties”, “cut to kill the vector Qi” and “cast after processing” four main issues. Underground unearthed a bronze sword, the vast majority of the ornamentation prime bronze sword, here focuses on the Plain bronze sword, the pattern of ornamentation bronze sword will be discussed. The categories of bronze generally fall into six main types: ritual vessels, implements of production, weapons and accessories on the chariot, daily life utensils and others. Before the bronze sword casting technology system Fan must have a norm that the geometry of the bronze swords, bronze swords, two faces, but the two faces of the geometry is completely consistent, indicating that the bronze sword two mud Van is out of the ram system using the same mold.
Xunzi living in the Warring States period, to coincide with the era of mass production of bronze sword. Xunzi in the “Power” chapter cloud: punishment range are gold tin America, working rule of clever, fire Qi was, profile criminal while the Moye. “Xunzi here stressed that the cast bronze sword required regularity of the mold (criminal ) system out of the regularity of the fan, the ratio of copper (gold) and tin should be appropriate, artisans want to ingenuity when casting copper liquid temperature (fire) according to the ratio of the alloy (Qi) to master properly, as to these future , cut open the chamber for a “Moye” bronze sword to cast too. Xunzi as “power,” the articles is to describe the process of the casting of bronze sword in governing the country the truth, so the process of casting bronze sword it is very abstract. Not the Warring States bronze sword in the end is how the casting out? In terms of decorations, the bronze can be divided into animal patterns, geometric pattern and personnel activity pattern.
Careful examination of the Warring States tombs unearthed bronze sword, not difficult to find in almost every width and thickness changes between the various parts of the Warring States bronze sword in its two a surface are the same. bronze decoration is extremely rich, but also of aesthetic value. From this phenomenon, we hypothesized that the Warring States cast bronze swords, bronze sword mode should be “side-mode”. So-called “side-mode refers to the Warring States bronze sword has two sides, but the mold is only for a surface, from both sides of the edge type. Shown in Figure 1, a bronze sword die on both sides set up parallel to the body with bronze sword Zi Mukou tenon and mortise and tenon joint and bronze sword takes the shape of equidistant vertical side set the tenon on the other side is located d in this kinds of mold on the ram the system out of the mud.
It will, regardless of positive and negative. The two bronze swords Fan Fan surface is relatively a range of the surface of the mortise and tenon, just, and another range of the surface of the tenon and mortise buckle. In this way, two mud Fan fastening, this will form of a bronze sword body cavity. Use (Figure 1, with the same two Fan buckle schematic diagram of the synthesis bronze sword body cavity) of this method for the casting of bronze swords remain the same pros and cons of bronze swords surface of the corresponding geometry, length, width and thickness h ave. Fan casting simulation, we only made a bronze sword, a surface of the mold. The most common of the animal decorations on the bronze are taotie, kui pattern, dragon, and phoenix. If both sides of the mold is made, both sides of the corresponding shape and size are inevitably different, so, the rammer system two Fan and Fan-cast from the chinese bronze body, their pros and cons, will generate the geometry and dimensions differences.
~doadmin
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