RU96113996A - METHOD FOR CASTING ALUMINUM ALLOYS, ALUMINUM ALLOY AND METHOD FOR PRODUCING FROM IT INTERMEDIATE PRODUCTS - Google Patents

Claims (1)

1. A method of casting aluminum alloys, including: - continuous supply of molten liquid metal of an aluminum alloy to the crystallization zone, - continuous heat removal from the area of liquid metal of an aluminum alloy, - the metal crystallizes and casting is formed, - the liquid metal is treated at the crystallization level by a magnetic field , characterized in that the liquid metal is treated spatially inhomogeneous magnetic field.  2. The casting method according to claim 1, characterized in that the vector of magnetic induction of the magnetic field increases along the crystallization zone in the direction of motion of the casting.  3. The method according to p. 1, characterized in that the maximum magnetic induction of the magnetic field in the liquid metal is induced near the top of its liquidus isotherm.  4. The method according to p. 3, characterized in that the magnitude of the magnetic induction vector increases along the crystallization zone by more than 0.01 T.  5. The method according to p. 4, characterized in that the magnetic induction vector along the crystallization zone increases from (0.04-0.063) to (0.05-0.64) T.  6. The method according to p. 5, characterized in that the magnetic field is a magnetic field with a time-varying direction of the magnetic induction vector to the opposite.  7. The method according to p. 5, characterized in that the magnetic field is a pulsed magnetic field with a constant in time direction of the magnetic induction vector.  8. The method according to p. 5 or 6, characterized in that the vector of magnetic induction of the magnetic field in the crystallization zone increases from (0.04-0.39) to (0.05-0.40) T.  9. Aluminum alloy, characterized by its production method according to one of the previous paragraphs of the application. 10. An aluminum alloy, mainly according to claim 9, characterized in that, in addition to aluminum, it also contains magnesium, zirconium, beryllium, titanium and its components contain the following components in the following ratio wt.%: Mg 9.5-11.5; Zr 0.05-0.2; Be 0.03-0.15; Ti 0.02-0.1; the rest of the base metal is aluminum, and the alloy has a dense uniform fine-crystalline structure with particles uniformly distributed in the matrix with a dispersion of 5000 to 20,000

11. The alloy according to claim 10, characterized in that it contains cobalt in concentrations of 0.01-0.05 wt.%.  12. The alloy according to claim 10, characterized in that it contains boron in concentrations of 0.004-0.02 wt.%.  13. The alloy according to claim 10, characterized in that it contains chromium in concentrations of 0.01-0.3 wt.%.  14. The method of production of intermediate products based on aluminum alloy, mainly aluminum alloy according to paragraphs. 9-13, which contains more than 9.5 wt.% Magnesium, which includes the homogenization of the casting, preliminary deformation of the casting, rolling of the billet obtained in this way with intermediate annealing, heat treatment of the obtained semi-finished product and the manufacture of intermediate products, characterized in that the preliminary deformation and rolling is carried out at temperatures which, when deformed, lie below the temperature of stability of magnesium in a solid solution of aluminum, and heat treatment of the semi-finished product is carried out by hardening. 15. The method according to p. 14, characterized in that as a preliminary deformation apply pressing at a temperature of about 350 ^o C and below. 16. The method according to p. 14, characterized in that the rolling is carried out at a temperature of about 350 ^o C and below. 17. The method according to p. 14, characterized in that the hardening of the semi-finished product is carried out at a temperature of approximately 380-435 ^o C.  18. An intermediate product of aluminum alloy, characterized in that it has a tensile strength higher than 370 MPa with simultaneous deformability in the Erickson cold state higher than 9.5 mm and includes an aluminum alloy containing, wt.%: Mg 9 5-11.5; Be 0.03 - 0.15; Zr 0.05 - 0.2; Ti 0.02 - 0.1, the rest is the base metal Al. 19. The intermediate product according to p. 18, characterized by a dense uniform fine-crystalline structure with particles uniformly distributed in the matrix with a dispersion of from 5000 to 20,000

, and cast according to the method, which includes the following stages:
continuous supply of the molten alloy to the crystallization zone, continuous removal of heat from the region of the molten metal, and the metal crystallizes and casting is formed, treatment of the molten metal in the crystallization zone with a spatially inhomogeneous magnetic field, the magnetic induction vector of which is increased along the crystallization zone in the direction of motion of the casting. 20. An intermediate product according to claim 19, characterized in that it is obtained by a method that includes the following stages: homogenization of the casting, pressing the casting at a temperature of about 350 ^o C and below, rolling the deformed workpiece at a temperature of about 350 ^o C and below, hardening rolled prefabricated at a temperature of about 380-435 ^o C.  21. The product according to p. 18, characterized in that the alloy from which it is made contains cobalt in concentrations of 0.01-0.05 wt.%, Boron in concentrations of 0.004-0.3 wt.% And chromium in concentrations of 0 , 01-0.3 wt.%, With which it is alloyed together or separately.