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通过采用古代青铜范铸技术 ,对历代各种铜镜进行复原复制 ,以及对各种铜镜剖面的几何形状进行研究 ,发现从战国至晚唐时期各种铜镜的化学成分中 ,锡含量都以保持在 2 3～ 2 4%左右为最佳值 ,大或小于这个数值 ,就会出现一些弊病或铸造缺陷。而铅含量则随着镜体剖面几何形的变化而变化 ,原则上是小镜含铅量低 ,大镜含铅量高 ;否则 ,就会造成废品。铅在高锡青铜镜里的加入量 ,对于铜镜的质量至关重要。
Through the use of ancient bronze van casting technology, the restoration of various bronze mirrors of all ages, as well as the geometry of various bronze mirror sections, and found that from the Warring States Period to the late Tang Dynasty, all the bronze mirror of the chemical composition, tin content To maintain the best value of about 23 ~ 24%, large or small than this value, there will be some disadvantages or casting defects. The lead content changes with the geometry of the mirror body changes in principle, the small mirror lead content is low, large mirror lead content is high; otherwise, it will cause waste. The amount of lead added to the high tin bronze mirror is crucial to the quality of the bronze mirror.