Equipment and low temperature and rapid solidification, continuous casting method for casting other metal amorphous shape, ultracrystallite, and microcrystalline or crystalline metal slab

摘要

Discloses amorphous and LRC method, ultracrystallite, for casting other devices shape metal particles or metal slab and fine crystalline present invention. Kept constant pressure _p b = 1 bar and constant temperature _t b = -190 ℃ (8) working chamber, and is used as a cooling source of liquid nitrogen of 1.877 bar and -190 ℃ to cool the casting blank. The liquid nitrogen is injected at various injection rate k and various injection quantity v onto the surface or other shaped metal non-ferrous metal slab or iron metal (7) (5) Liquid nitrogen ejector. Ejected liquid nitrogen comes into contact with the casting blank at cross section c shown in Figure 2. Ultra-thin jet technology is employed in this method, the thickness of the film is constant at 2mm, the liquid nitrogen's ejection speed is a 30m / s. During the interval △ τ time, the metal is drawn min △ m length from the outlet hot casting mold (4) and (6) induction traction devices in response to various cooling rates V _k, operating in a continuous casting speed u is. Under gasification action and heat absorption of ejected liquid nitrogen, molten metal is solidified, to produce microcrystalline metal structure amorphous, or ultracrystallite, it is cooled more rapidly.