Fan casting is the earliest and most widely used method. Fan casting is also called die casting. First, the mold is made of mud, carving various patterns and inscriptions. After drying in the shade, it is fired to become a master mold. Then, a clay mold is made from the master mold, and a ceramic mold is also made in the shade, so as to melt the alloy, pour the alloy into the cavity of the ceramic mold, and then clean and polish it to obtain the bronze finished product.

2, lost wax method

Lost wax method is a method of precision casting bronze and other metal objects. Beeswax is used to make the model of the casting, and then the mud core is filled with other refractory materials and coated. After heating and baking, the wax model completely melts and falls off, making the whole casting model an empty shell. Then pour the solution into it, and it will be cast into an object. Objects can be beautifully carved and have a hollow effect.

3. Mud casting method

The casting method of casting an object at one time is called mud casting. If the shape of the vessel is too large or too complicated, it is necessary to divide the whole vessel into several pieces, turn them upside down and cast them separately, and finally splice them into a whole. This casting method is called individual casting. When casting multiple smaller objects, multiple casting molds will be stacked together, and copper water will be poured from one gate to cast multiple objects at one time. This process is called pile casting. Stacking casting method is mostly used to cast small objects such as coins, which appeared in the Spring and Autumn Period and gradually became popular in the Han Dynasty.

Extended data:

Repair and maintenance of bronzes

weld

For an incomplete unearthed bronze cultural relic, it is necessary to weld the bronze into a finished product. Welding is an important link in traditional repair technology, and it is the main means to repair damaged bronzes and restore their shapes. It is necessary to adopt different welding methods according to the different properties, damage and corrosion of bronze, that is, "big welding" and "small welding". File the welded joint with a hammer, then melt the tin with an electric soldering iron and inject it into the bronze to be repaired for welding.

supplement

Complementary matching is an important technology to repair the defective parts in traditional bronze restoration technology. Complement means that an incomplete bronze ware is incomplete. According to the types, shapes and incomplete parts of bronzes. Complementary colors should be developed according to the decorative patterns of bronzes, and then the shapes of complementary colors are made through the decorative patterns, and then a finished bronze cultural relic is spelled out.

Do plastic surgery

Buried bronzes were crushed and deformed due to the collapse of tombs and the change of strata, and cracks appeared. Unearthed bronzes often need shaping. The modeling methods of bronze ware include hammering, modeling, sawing, heating modeling and physical modeling. The selection method is based on the deformation degree of the utensils and the texture of the bronzes.

References:

Baidu encyclopedia-bronze craft

Baidu encyclopedia-bronze ware