A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt.

A nonlinear oxygen-enriched injection method based on chaotic mapping and electronic device is disclosed, including: obtaining a chaotic gas injection volume corresponding to a current speed change period according to a chaotic mapping value corresponding to the current speed change period and a peak gas injection volume in an oxygen-enriched injection process; determining a rotational speed of a fan blade in a fan component corresponding to the current speed change period according to the chaotic gas injection volume; updating a rotational speed of a direct current (DC) motor in the fan component corresponding to the current speed change period according to the rotational speed of the fan blade in the fan component, and driving the fan blade to rotate according to an updated rotational speed of the DC motor, so as to update an air output of the fan component. The above operations are repeated until a last stage.

A nonlinear oxygen-enriched injection method based on chaotic mapping and electronic device is disclosed, including: obtaining a chaotic gas injection volume corresponding to a current speed change period according to a chaotic mapping value corresponding to the current speed change period and a peak gas injection volume in an oxygen-enriched injection process; determining a rotational speed of a fan blade in a fan component corresponding to the current speed change period according to the chaotic gas injection volume; updating a rotational speed of a direct current (DC) motor in the fan component corresponding to the current speed change period according to the rotational speed of the fan blade in the fan component, and driving the fan blade to rotate according to an updated rotational speed of the DC motor, so as to update an air output of the fan component. The above operations are repeated until a last stage.

The present invention discloses a low-pressure mold and production process for aluminum alloy integrated brake calipers, relating to the technical field of casting. The mold comprises a bottom plate, a right mold core and a left mold core are provided on the bottom plate, and the right mold core and the left mold core have the same internal structure and are each provided with a sprue assembly. The low-pressure casting process has higher production efficiency and yield than gravity casting. Castings produced by low-pressure casting have higher structural compactness and more excellent mechanical properties than those produced by gravity casting.

The present invention discloses a low-pressure mold and production process for aluminum alloy integrated brake calipers, relating to the technical field of casting. The mold comprises a bottom plate, a right mold core and a left mold core are provided on the bottom plate, and the right mold core and the left mold core have the same internal structure and are each provided with a sprue assembly. The low-pressure casting process has higher production efficiency and yield than gravity casting. Castings produced by low-pressure casting have higher structural compactness and more excellent mechanical properties than those produced by gravity casting.

An acoustic rotary liquid processor coupled with high-intensity ultrasonic vibration, rotary stirring, and melt surface stabilizing is described. The processor can be used for the preparation of slurry containing a small fraction of non-dendritic solid particles for semi-solid material processing.

An acoustic rotary liquid processor coupled with high-intensity ultrasonic vibration, rotary stirring, and melt surface stabilizing is described. The processor can be used for the preparation of slurry containing a small fraction of non-dendritic solid particles for semi-solid material processing.

A nickel alloy having superior surface properties by controlling the composition of non-metallic inclusions that affect surface properties, and a method for producing the same. A nickel alloy includes: all by mass %, Ni: 99.0% or more, C: 0.020% or less, Si: 0.01 to 0.3%, Mn: 0.3% or less, S: 0.010% or less, Cu: 0.2% or less, Al: 0.001 to 0.1%, Fe: 0.4% or less, O: 0.0001 to 0.0050% or less, Mg: 0.001 to 0.030%, Ca: 0.0001 to 0.0050%, B: 0.0001 to 0.01%, and the balance of inevitable impurities; the alloy including non-metallic inclusions, in which the non-metallic inclusions include one or more of MgO, CaO, CaOAl.sub.2O.sub.3-based oxides, CaOSiO.sub.2-based oxides, CaOMgO-based oxides, and MgO.Math.Al.sub.2O.sub.3, the MgO.Math.Al.sub.2O.sub.3 has a number ratio of number 50% or less with respect to all oxide-based, non-metallic inclusions.

A composition of non-metallic inclusions that affect surface properties and provides Ni-based alloys with superior surface properties. A Ni-based alloy consisting of: all by mass %, Ni: 52.0% or more, C: 0.001% to 0.030%, Si: 0.01 to 0.10%, Mn: 0.10 to 1.50%, P: 0.030% or less, S: 0.0050% or less, Cr: 13.0 to 25.0%, Mo: 10.0 to 18.0%, W: 1.00 to 5.00%, Cu: 1.00% or less, Co: 3.00% or less, Al: 0.001 to 0.170%, Fe: 2.00 to 8.00%, Mg: 0.0010 to 0.0200%, Ca: 0.0001 to 0.0040%, V: 0.500% or less, Nb: 0.001 to 0.100%, O: 0.0001 to 0.0050%, wherein the non-metallic inclusions includes one or more of MgO, CaO, CaOMgO-based oxides, CaOAl.sub.2O.sub.3MgO-based oxides, and MgO.Al.sub.2O.sub.3, the MgO.Al.sub.2O.sub.3 has number ratio of 50% or less with all oxide-based non-metallic inclusions.

A composition of non-metallic inclusions that affect surface properties and provides Ni-based alloys with superior surface properties. A Ni-based alloy consisting of: all by mass %, Ni: 52.0% or more, C: 0.001% to 0.030%, Si: 0.01 to 0.10%, Mn: 0.10 to 1.50%, P: 0.030% or less, S: 0.0050% or less, Cr: 13.0 to 25.0%, Mo: 10.0 to 18.0%, W: 1.00 to 5.00%, Cu: 1.00% or less, Co: 3.00% or less, Al: 0.001 to 0.170%, Fe: 2.00 to 8.00%, Mg: 0.0010 to 0.0200%, Ca: 0.0001 to 0.0040%, V: 0.500% or less, Nb: 0.001 to 0.100%, O: 0.0001 to 0.0050%, wherein the non-metallic inclusions includes one or more of MgO, CaO, CaOMgO-based oxides, CaOAl.sub.2O.sub.3MgO-based oxides, and MgO.Al.sub.2O.sub.3, the MgO.Al.sub.2O.sub.3 has number ratio of 50% or less with all oxide-based non-metallic inclusions.