Abstract: A mould for the continuous casting of metals is formed with sections having different tapers so as to match the peripheral contraction of the mould to contraction of the metal being cast at different stages of the casting process. In an intermediate section of the mould in which the metal forms a peripheral shell, a peripheral contraction is applied which is preferably about 30-40% of the linear shrinkage of the metal on freezing, while a considerably more gradual taper is applied in an exit section.

Abstract: A water-filled cylindrical tank is provided for explosive forming with improved means to damp ringing and to cushion shocks due to explosions within the tank. Damping is by means of an annular disc connected within the open top of the tank by rubber-in-shear mountings, and cushioning of the side wall of the tank is by means of a ring of vertical lengths of weighted hose.

Abstract: Tubular copper moulds used in the continuous casting of metals are formed or reformed by an explosive forming technique, involving placing a mould preform or used mould over an arbor having an external surface with the profile and finish required of the finished mould, jacketing the assembly with an explosive charge, submerging the jacket assembly in a liquid, detonating the charge from one end and drawing the formed mould off the arbor.