The Casting Methods of the bronze sculpture in Different Times

"Gasket" is basically the same with the bronze of the wall thickness of copper, is truly to "pad", are outside the range between the use and scope of all the bronze casting process being used. "Nail" is not used in the normal range of bronze casting process, but for the ancient lost wax process in the copper nails or nails. Be informed that Zhou carried the bronze sculpture back home, he had intended to report magistrate. Traces from the surface to see objects, both almost the same, but the objects of the abdominal cavity to see, but there is a clear difference between the two.

In addition to Fan casting technologies, which can not be in the ejection of the casting of bronze, the ancients invented the lost wax process. On second thought, no, if the court dispatched officials, they would take away the bronze statue. After the Northern Wei Dynasty, such as a large number of hollow casting of bronze statues of various postures of birds and some respect, these bronzes are manufactured, not as a result of Fan casting method as used in the ceramic mold clay range on the rammer system process for the casting of, but to use lost wax casting process too.

The traditional lost wax process in shaping the wax when the study said, "lost wax", "out of wax," "go wax", "dial wax", "pinch carving wax" and "loss", "a", "walk" refers to the wax mold of the "dial", "stripping" "pinched eagle" is that the method of making wax models. Once the bronze sculpture left the county, he might lose the opportunity to get it back again. The process is the first objects with mud mud Niechu core, made of sheet material, after the wax in the clay core on the package by the great care, so want to cast wax into wax-type objects, welding outlet on the wax, in wax-type material wrapped around the mud, the dried, calcined clay core after dewaxing become empty type, then can melt copper casting.

However, as these often do not like the shape of works of art bronzes so symmetrical, therefore, be dried in the mud and the roasting process, the center of the clay core will often occur eccentric phenomenon. When the chinese bronze sculpture was sold to the capital, Song could not sleep at night. Eccentric core event of mud, after pouring the casting wall thickness of the light will evenly, there will be severe side the other side of thick copper liquid does not pour into the phenomenon. In order to solve and prevent the emergence of the casting defects, the ancients adopted the "nail" process, that is, when wrapped in wax and clay sculpture of a good future outside the core, the length longer than the thickness of the copper nails or wax the tip of the nails pierced wax layer, rolling into the clay core on the fixed, flat side and the outer surface of the wax-type flush.

When the wax-type outside the package through the mud to dry, after roasting, melt the wax is over, but the core and shell mold out of clay mud there are many between the copper or iron nails supports, both to ensure the clay core will not occur eccentric, but also to ensure the uniform wall thickness. The money in his hands alone could not be able to purchase the china bronze sculpture back. Because these metal nails are fixed in the mud to penetrate the wax layer on the core, therefore, where the nail of the objects with the abdominal cavity, you can find difficult to handle or touch the nail, which is the "nail" and "gasket "The obvious difference lies. Therefore, I believe, "pads" and "nail" is not confused.