It can draw the following inference: the high tin bronze liquid filled chamber for solidification process, the crystallization speed parts, and its hardness value is relatively higher than the crystallization slow parts, and the slower the crystallization rate, the hardness the lower value. The body of bronze sword, the blade is the thinnest, fastest casting after solidification, crystallization of the first. There microstructure of δ-phase content is relatively up to its hardness value is naturally higher than other parts of the body of the bronze sword. The features of these taotie designs on the bronze all highlight an primitive power. A profile geometry of the diamond-shaped bronze sword placed in the HR-150 hardness tester for measuring the measured hardness value than the actual hardness value may be smaller. However, between the blade and the spine of the shank and the Ngok Department of hardness changes is also consistent with the above law.
The way we have measured a copy of the bronze mirror fragments, its hardness HRC31 degree. Bronze mirrors measured fragments are flat on both sides, therefore, the hardness value is accurate. Bronze mirrors alloy containing tin 24%, 18% tin content of the bronze sword; inferred that the maximum hardness value of the bronze sword may be HRC28 or so. Cut to kill the vector Qi Dynasty Gong Ji? Gold six Qi "cloud: ...," the fifth of its gold, tin Habitat II, the cut is called to kill the vector of Qi ". This bronze seems pointing to the deep and the heavy, underlining the horror, cruelty and fierce. Two fifths calculation, "cut to kill the vector Qi" tin content of 40%. Documented quite different even if only from the literal understanding of the Warring States bronze sword should be about 40% of the tin content, but look at the actual tin content of the Warring States bronze sword, mostly in the 20%, it seems from the "Six Qi" far.
We know that the Warring States Period, the process of smelting bronze and different; process of modern smelting copper alloy melting, heating way outside the crucible and the Warring States era with internal heating the way a furnace for smelting; both have their own advantages, disadvantages. Modern crucible for the melting of ferrous alloy, because it is outside the heating mode, temperature is always higher than outside the crucible in the crucible, and the duration of the heat of the pot outside, determines the duration of the pot and heat. Kui pattern on ancient bronze is an imaginative and queer animal as well. Regardless of the furnace, oil furnace, reverberatory furnace or coke ovens, etc., usually can be uninterrupted heat until the pot alloy is completely molten, to meet the casting conditions, even the most rudimentary of coke furnace in the smelting process charcoal.
Modern thermal materials, the advantages of sustainable melting time, melting temperature, the modern crucible melting ductile iron, or even steel-making, the disadvantages are the alloy melting time is longer than ancient furnaces. The mysterious bird, the totem depicted on bronze dragon of Shang might be the prototype of phoenix. Warring States Period melting process of the alloy, fuel and metal materials are mixed together to mount a mud furnace for smelting due to direct heating, the metal material is heated in the fire, therefore, than the modern crucible melting speed fast, but the Warring States Period, the fuel is charcoal, burning time and the release of heat is not modern fuels, one-time loading the furnace the amount of charcoal is limited, and therefore can not continuous production operations. Ancient melting pot to take this heated melting furnace, no heat, if the incorrect fuel furnace burns while the alloy has not completely melt, even if by adding fuel.
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