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Micro casting

Lost-wax casting is a technique that dates back to ancient times. Among the best-preserved examples from antiquity are the Bronzes of Riace.

The lost-wax casting method is used in the fashion and jewellery industry: a reproduction of the piece is created in wax or using 3D printing. Additional pieces, casting channels and uprights are then added, creating the tree, also made of wax. The shaft, also known as the “cluster”’, is placed in a cylinder that is filled with refractory material. The cylinder undergoes two heating cycles, the first to remove the wax from the cavity, the second to pre-heat the plaster so that the liquid metal can be poured into the cylinder avoiding gaps and cold joints.

After the metal poured inside the cylinder has solidified, the plaster is broken away and the various pieces are separated from the column. The item is finished off with post-casting surface operations. The quality control department then inspects the item and certifies its conformity.

ProCAST software is dedicated to the fashion and jewellery industry. ProCAST digitises the injection of wax into the rubber mould and focuses on digitising casting and solidification.

The aim is to eliminate casting tests, which are carried out on the computer with ProCAST

Let’s take the “C” shape for making bangles as an example. We can consider two types of feeds
Comparison of cluster solidification with the two types of feed
Rough cast bangles:
Defects appearing with the left feed, while the right feed shows a sound piece
The customer digitally sampled the two clusters using ProCAST software and was able to exclude the test with the left-hand feed system because it created a reject bangle

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