Lost wax mold

This technology is also called fusible core molding, soluble core technology (SCT), lost-wax molding, loss core molding, etc. This technique is a take off and similar to the lost wax molding process used... 

Casting Investments. Casting investments are used to form molds into which molten metal may be cast. The cavity for receiving the metal is formed by the lost wax process. The composition of investments used for alloys cast from low (<1100° C) temperatures are different from those used for alloys cast from higher (>1300° C) temperatures. 

Soluble core molding The soluble core technology (SCT) is called by different names such as soluble fusible metal core technology (FMCT), fusible core, lost-core, and lost-wax techniques (3). In this process, a core [usually molded of a low melting alloy (eutectic mixture) but can also use water soluble TPs, wax formulations, etc.] is inserted into a mold such as an injection molding mold. This core can be of thin wall or solid construction. 

Lost-wax Also called RP molding, fusible-core. A bar (or any shape) of wax is wrapped with RP. After the RP is cured (bag molding, etc.) in a simplified restrictor mold to keep the RP-wax shape, the wax is removed by drilling a hole or removing the end caps by applying a low temperature so that the RP is not effected (review in this chapter INJECTION MOLDING, Modified... 

Metal Casting Techniques. Many ancient cast metal objects were made by the cire perdue (lost wax) casting process, which involves pouring molten metal into a one-piece mold and letting it solidify modem fakes are usually cast in two halves that are then joined. A casting fin, or a fine line of filed solder on a cast object, usually reveals that the casting is modem. 

Metals, usually gold and silver, are often cast to make rings and other small jewelry pieces. In lost wax casting, a wax pattern for a jewelry piece is burned out of a mold. A large variety of waxes, such as beeswax, paraffin, and tallow, can be used. The waxes can release formaldehyde and acrolein. 

Most important, this bronze vessel has seams which show it to have been cast from a mold made in four separated sections. This wine cup required a complex ceramic mold, which sets the early Chinese bronze technology apart from the lost-wax process used in the West. 

B.C. and the famous Bronze Horse was cast by the lost wax process and not, as had been suggested, by a modern piece-mold sand casting process. In addition. X-ray radiography helped to provide details on the methods of manu-factuer of Sasanian silver and a Chinese bronze vessel. 

The radiographic evidence strongly supports a lost-wax casting procedure and does not indicate a sand piece-mold process as demonstrated by the following observations. The iron armature is not an iron wire, as used in modem processes, but is an irregular band, approximately 12 mm wide and 2 mm thick (Figure 17). Similar armatures and also iron chaplets have been observed in many bronzes manufactured in... 

Besides royal gold jewelry, they made artistic brass weights, spoons, and boxes. They also worked copper, zinc, tin, lead, and nickel. They cast objects in brass by the lost wax method. In this process, shapes were carved in wax, then encased in clay and baked. The hot wax was poured out, leaving a ceramic mold. 

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