Cast bronze sculpture : With copper as the main raw material, the metal is melted into a liquid that meets certain requirements and poured into the casting mold. After cooling, solidification and cleaning, the sculpture works of art with predetermined shape, size and performance can be obtained. Copper casting has a long history and mature technology. The process of casting copper is more complicated than that of forging copper, and the artistic creation has a good resilience, so it is suitable for becoming the material of fine works, especially figure sculpture.

Main materials of cast bronze sculptures

Red copper : Pure copper. National standard (96 #), excellent plasticity, suitable for forging process. If no other metal is added, it is not suitable for casting.

brass : The main components are copper, zinc, and a small amount of aluminum and tin, which are national standards (62 #, 63 #). It is characterized by good casting processing performance and corrosion resistance. Suitable for precision casting, stable coloring.

bronze : The main components are copper, tin, and a small amount of aluminum and zinc, which are national standards (38 #). It has good casting processing performance, strong acid, alkali, salt resistance, corrosion resistance, suitable for precision casting, and stable coloring.

Standard manufacturing process of cast copper sculpture

Cast bronze sculptures and other casting sculptures are first of all clay sculptures It is actually a process of material conversion, that is, from plastic clay products to gypsum and glass fiber reinforced plastics, which are shaped with different materials, and finally sent to professional foundries for the final casting process. Each cast bronze sculpture is made by at least eight complex and rigorous processes, which include both the traces of traditional handicrafts and the highlights of modern technology of precision casting.

Step 1 : Making clay figurines (The quality of the clay sculpture's shape, the expression of its charm, and the expression of its intention will directly affect the quality of the future products. Therefore, excellent clay sculptures cannot be separated from excellent clay sculptors.);

Step 2 : Sculpture modeling covered with big mud ;

Step 3 : Make clay sculpture prototype ;

Step 4 : Large scale sculpture completion , notify Party A to review and put forward opinions or modifications on the big model;

Step 5 : Enter the reproduction stage On the clay sculpture, slice is used for block mold segmentation design, and then spray soapy water as isolation protection;

Step 6 : Remove the residual mud on the block mold after demoulding After that, the plaster mold shall be carefully repaired and reground. Then polish with metal copper mesh;

Step 7 : casting ;

Step 8 : Trimming and treatment of product castings (Sand blasting and cleaning of cast copper products, and final treatment such as cutting, grinding, heat treatment, shaping, machining, polishing, etc.);

Step 9 : Surface effect treatment and protection (The effect required for the surface treatment of cast copper is usually divided into cold coloring and hot coloring, and then waxing protection and polishing are carried out).

Advantages of Cast Copper Sculpture

Cast copper sculptures use high temperature resistant molds such as refractory gypsum molds or sand molds Generally, it is the inner and outer layers. Pour the copper water into the mold from the skylight and form it by cooling. The wall thickness is generally 3-8mm. It is hard, corrosion resistant and has a long service life. Because of its own characteristics, bronze carving has the characteristics of enduring. Bronze sculpture itself has a sense of heaviness, and as a sculpture material, it can better reflect the character characteristics of characters. Moreover, bronze carvings are easier to preserve and will not become obsolete with the tide of time.

Another sculpture material ——Glass fiber reinforced plastic is formed by chemical reaction in the mold office after mixing resin and other chemical additives. Generally, the larger ones are made by brushing, the smaller ones are filled with solid and vacuum pumped. It is made of organic materials, flammable, light, relatively short life, aging, deformation and distortion (round sculpture is not easy to deform), cracking. The outdoor life is 7-10 years, and the surface is generally colored, Color life is also limited; The glass fiber reinforced plastic itself has a good hardness and a certain elasticity, but the sculpture is generally hollow, its hardness is similar to that of hard plastic, and it is fragile, but because it contains fiber, it is generally not as bad as plastic, and it is also easy to repair.

therefore For some fine sculpture works with high requirements and complete restoration design creation, it is better to use copper casting technology, especially figure sculpture.