Foundry sands and molding materials

In addition to molding techniques using permanent metal molds, the foundry still makes extensive use of single-use molds and cores made from bonded sand.

After describing the various constituents (base sand, binders, various additives) and their control methods, the article describes the sand preparation processes and the control methods used to assess their specific properties in relation to their application.

The various recycling techniques for reusing sand that has already been cast are also presented.

The final paragraph describes the constraints associated with the use of bonded sands in the internal and external environment of foundries, within the framework of current regulations.