Lost wax casting is a way to obtain shaped castings from metal alloys in a one-piece, hot and non-steaming shell-shaped form within a working cavity, which was formed to remove the casting patterns by cauterization, melting or dissolving.
In this method the casting moulds (usually metal) press a model composition, which creates model parts and Gating system components after hardening.
This composition is often removed by melting down in hot water (this explains the name of the process - lost wax casting). The obtained form gets calcined at 800-1000 degrees and casted to metal.
The lost waxing casting method produces complicated casting forms weighing from a couple of grams up to ten kilograms with a wall thickness from 0,5 mm or more, a surface with the corresponding 4-6 purity classes and a high dimensional accuracy.
All these characteristics were the reason for the former names of this method - precision die casting. The dimensions of the castings are made by this method and that as close as to the dimensions of the finished cast parts. With the reduction of further treatment, the costs of the following finished product are lower.
Lost wax casting is used for the production of art casting, jewellery, dentures, metal and other products. This casting method is already very old and has a high application in modern industry with the revised casting technology and studies about the qualities of organosilicon compounds.