Bronze mirror heat treatment technology

China's ancient literature, there are detailed on the folder china bronze sculpture mirror records. Clip bronze mirror has the following characteristics: 1, bronze mirror and bronze mirror back into two layers, and hollow. 2, the "positive part" thinner, the same with ordinary bronze mirror, "back" pattern may have raised. 3, no welding track. 4, the sound Lengran fiber far. Bronze mirror of the material on the folder, the same high-tin bronze, because only a clear pattern of high tin bronze, in order to achieve such results. Form the material level, the decorations and shapes of bronze sculpture has mirrored the ideological reform in that stage. Clip bronze mirror molding process more complicated, not cast, nor welding, is using a double-engraved with the aforementioned bronze mirrors similar pattern, but not exactly made a special method of processing.

The process points are: 1, respectively, the first cast of the "bronze mirror part" and "bronze mirror back part", and "bronze mirror some of" after the bulge to the back edge of a circular ring to make it to the last folder live 'Bronze mirror back "; 2, a good cast" bronze mirror back "," bronze mirror, "a two-part metal quenching, respectively; 3, the" bronze mirror part of the "heated to β phase, that is slightly higher than the the range of 586 ℃, after holding strong to make it hot to the "bronze mirror back part of the" Fit, cold climate, the two parts will be bonded together metal; 4, with tin amalgam to smooth out and play occupies a position light, to cover the seams. Consequently, the portraits of human bronze statue prevailed. "Bronze Mirror" and "bronze mirror back" the size of the two parts must be very accurate, can not get the slightest, joints shall be clean and bright and clean, not leaving any special oxides, volatile matter.

Sandwich cavity 'size to the right choices, set the furnace to fit together, otherwise it would be difficult to achieve long-term effects are not separated. In such patterns, people in real life become the main patterns on the chinese bronze. A rare bronze mirror folder, it seems difficult to control mainly the rules copper, bronze mirror heat treatment technology. High-tin bronze is both hard and brittle, copper, bronze mirrors to improve the processing and performance, the Warring States Period, Han and Tang Dynasties, when some of it is often quenched and tempered, which is about casting operation after forming, and slightly by the simple The clean-up before it proceed. From the principle point of view of modern technology, high-tin bronze cast before quenching, the nature of hard and brittle.

After quenching the plastic, the material strength, plasticity has been markedly improved, the hardness is decreased, low-temperature tempering, the hardness is once picked up, tempering temperature increased, the hardness and re-drop. The animals the objects of hunting and fulfill the blank space of the china bronze. This mainly refers to the strength of the purposes. China's ancient bronze mirror of copper quenching technique, invented in about the Spring and Autumn period, from the Warring States period to use was more prevalent among the Han and Tang. From the literature and the principles of modern technology to see the ancient bronze mirror quenching, tempering the effect of technology about three aspects: 1, strength and ductility increased, thus improving its cutting performance, likewise when the tempering temperature is slightly higher this truth.