In the casting of Sanxingdui bronzes, the commonly used method is the segmented casting technique, where various parts are cast separately and then assembled into a complete object using multiple connecting processes. This paper focuses on the study of the Sanxingdui bronze casting techniques, based on actual observations, aims to substantiate the connections and distinctions between “casting joints” and “welding” from a theoretical perspective. It summarizes the terminology of connecting processes used in the Sanxingdui bronzes, including seven types: “lock-and-key connection”, “insertion connection”, “rivet connection”, “overlapping connection”, “pin-and-rod connection”, “modified connection”, and “copper rope connection”. This research further clarifies the casting technology system of the Sanxingdui bronzes and provides a deeper understanding of the systematic and scientific nature of the ancient bronze casting techniques.

The internal structure of K2：120

The connection points of Altar Dragon and Gu-shaped Zun