A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% by weight strontium, less than 0.35% by weight calcium, 1.5 to 10% by weight aluminum and 0.1 to 15% zirconium. The inoculant, method for producing the inoculant, method for inoculating the melt and a gray cast iron inoculated with the inoculant are covered.

A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% by weight strontium, less than 0.35% by weight calcium, 1.5 to 10% by weight aluminum and 0.1 to 15% zirconium. The inoculant, method for producing the inoculant, method for inoculating the melt and a gray cast iron inoculated with the inoculant are covered.

The invention relates to a method for producing ductile iron alloys and products thereof, and in particular ductile iron alloys with at least a partial pearlitic structure. The inventors have sought to develop an improved iron alloy for providing vehicle parts, in particular disc brake rotors. The method for producing a ductile iron alloy comprises the steps of: heating a steel composition in a furnace to produce a molten steel; transferring said molten steel to an inoculation ladle; inoculating said molten steel with an inoculant for a predetermined inoculation time to produce an inoculated molten steel; and pouring said inoculated molten steel into a mould to produce a ductile iron alloy with at least a partial pearlitic structure.

The invention relates to a method for producing ductile iron alloys and products thereof, and in particular ductile iron alloys with at least a partial pearlitic structure. The inventors have sought to develop an improved iron alloy for providing vehicle parts, in particular disc brake rotors. The method for producing a ductile iron alloy comprises the steps of: heating a steel composition in a furnace to produce a molten steel; transferring said molten steel to an inoculation ladle; inoculating said molten steel with an inoculant for a predetermined inoculation time to produce an inoculated molten steel; and pouring said inoculated molten steel into a mould to produce a ductile iron alloy with at least a partial pearlitic structure.

A ferrosilicon vanadium and/or niobium (FeSi V and/or Nb) alloy having 15-80 wt % Si; 0.5-40 wt % V and/or Nb; up to 10 wt & Mo; up to 5 wt % Cr; up to 3 wt % Cu; up to 3 wt % Ni; up to 20 wt % Mg; 0.01 to 7 wt % Al; up to 13 wt % Ba; 0.01 to 7 wt % Ca; up to 13 wt % Mn; up to 8 wt & Zr; up to 12 wt & La and/or Ce and/or misch metal; up to 5 wt % Sr; up to 3 wt % Bi; up to 3 wt & Sb; up to 1.5 wt % Ti; balance Fe and incidental impurities; a method for the production of a FeSi V and/or Nb alloy and the use thereof in cast iron.

There is provided with spheroidal graphite cast iron having excellent gas defect resistance where gas defects such as pinholes attributable to the free N are small in number and having mechanical characteristics and machinability equal to or greater than the conventional ones. The spheroidal graphite cast iron consists of, in mass ratio, C: 3.3 to 4%; Si: 2 to 3%; P: not more than 0.05%; S: not more than 0.02%; Mn: not more than 0.8%; Cu: not more than 0.8% (0 is not included); Mg: 0.02 to 0.06%; Ti: 0.01 to 0.04%; V: 0.001 to 0.01%; Nb: 0.001 to 0.01%; and N: 0.004 to 0.008%, with the remnant substantially consisting of Fe and an inevitable impurity.

A method for producing ductile iron alloys and products thereof, and in particular ductile iron alloys with at least a partial pearlitic structure, is disclosed. The improved ductile iron alloy may be used in vehicle parts, in particular disc brake rotors. The method for producing a ductile iron alloy includes heating an initial composition in a furnace to produce a molten mixture, transferring the molten mixture to an inoculation ladle, inoculating the molten mixture with an inoculant for a predetermined inoculation time to produce an inoculated molten mixture, and pouring the inoculated molten mixture into a mold to produce a ductile iron alloy with at least a partial pearlitic structure.

A method for producing ductile iron alloys and products thereof, and in particular ductile iron alloys with at least a partial pearlitic structure, is disclosed. The improved ductile iron alloy may be used in vehicle parts, in particular disc brake rotors. The method for producing a ductile iron alloy includes heating an initial composition in a furnace to produce a molten mixture, transferring the molten mixture to an inoculation ladle, inoculating the molten mixture with an inoculant for a predetermined inoculation time to produce an inoculated molten mixture, and pouring the inoculated molten mixture into a mold to produce a ductile iron alloy with at least a partial pearlitic structure.

A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% by weight strontium, less than 0.35% by weight calcium, 1.5 to 10% by weight aluminum and 0.1 to 15% zirconium, The inoculant, method for producing the inoculant, method for inoculating the melt and a gray cast iron inoculated with the inoculant are covered.

A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% by weight strontium, less than 0.35% by weight calcium, 1.5 to 10% by weight aluminum and 0.1 to 15% zirconium, The inoculant, method for producing the inoculant, method for inoculating the melt and a gray cast iron inoculated with the inoculant are covered.