摘要:
A device for producing metal powder. This includes a melting chamber, a downstream atomization tower, and a nozzle assembly for atomizing a melt jet. The device further includes an induction coil disposed within the melting chamber and operated at a melting frequency fmelt, the induction coil is adapted to locally melt a material rod at least section-wise received therein, to produce the melt jet to be atomized, and a separate intermediate coil disposed within the melting chamber and operated at a base frequency fbase, wherein said intermediate coil is disposed downstream of the induction coil and aligned coaxially with the induction coil. The intermediate coil is configured to superheat the melt jet in a region between the induction coil and the nozzle assembly. The following applies to a frequency ratio FBS of the base frequency fbase to the melting frequency fmelt, 1≤FBS=fbase/fmelt≤500.
摘要:
A semi-liquid metal processing apparatus and method are presented in which a semi-liquid metal and/or semi-solid metal is introduced into a crucible and his electromagnetically stirred at a first frequency while cooling, and thereafter sidewalls of a metal charge formed of the semi-liquid metal and/or semi-solid metal are partially melted prior to tilting the crucible for removal of the metal charge.
摘要:
Processes and methods related to processing and hot working alloy ingots are disclosed. A metallic material layer is deposited onto at least a region of a surface of an alloy ingot before hot working the alloy ingot. The processes and methods are characterized by a reduction in the incidence of surface cracking of the alloy ingot during hot working.
摘要:
The present invention relates to a method for manufacturing a high purity Mn, the method comprising: placing a flake-like electrolytic Mn raw material in a magnesia crucible to perform melting with the use of a vacuum induction melting furnace (VIM furnace) at a melting temperature of 1240 to 1400° C. under an inert atmosphere of 500 Torr or less; then adding calcium in a range between 0.5 and 2.0% of the weight of Mn to perform deoxidation and desulfurization; casting the resultant in an iron mold after the completion of the deoxidation and desulfurization to manufacture an ingot; then placing the Mn ingot into a magnesia crucible to perform melting with the use of a vacuum induction melting furnace (VIM furnace) at a melting temperature, which is adjusted to 1200 to 1450° C. and maintained for 10 to 60 minutes, under an inert atmosphere of 200 Torr or less; casting the resultant in an iron mold to manufacture an ingot; then placing the metal Mn ingot in an alumina crucible; reducing pressure to 0.01 Torr with a vacuum pump; and then heating to develop a sublimation and distillation reaction. Provided is a method for manufacturing a high purity metal Mn from a commercially available electrolytic Mn. In particular, an object is to obtain a high purity metal Mn in which the amount of impurities such as B, Mg, Al and Si is small.
摘要:
The present invention is a method for manufacturing a titanium ingot (30), the method being characterized by comprising: a step of melting a titanium alloy for a predetermined time by cold crucible induction melting (CCIM); a step of supplying molten titanium (6) to a cold hearth (10), and separating high density inclusions (HDIs) (8) by precipitation in the cold hearth (10) while spraying a plasma jet or an electron beam onto the bath surface of the molten titanium (6); and a step of supplying a molten titanium starting material from which the HDIs (8) are separated by precipitation to a mold (20) to obtain the titanium ingot.
摘要:
A self-contained assay facility housed in a fixed-wing or rotary wing aircraft that is completely equipped to melt and assay precious metals, particularly gold and silver. An induction furnace melts the metal that is then poured into an ingot. The ingot is weighed and analyzed using an XRF alloy analyzer and the percentage of gold and/or other metals recorded. The value of the gold at current market prices is calculated and the assay and the value of the ingot is printed and given to the seller. The seller may opt to receive the ingot and pay the assayer an assay fee. Alternately, the seller may ask to be paid in cash, in bullion, by wire transfer, or by an open hedge. A transfer or hedge is initiated and confirmed from the assay facility. The ingots are securely stored in a safe within the assay facility.
摘要:
An agitation device, a melting apparatus, and a melting method for improving melting efficiency of molten metal without contaminating the same. The agitation device is provided with a traveling magnetic field generating unit which is disposed outside a charging tank for storing molten metal and generates, inside the charging tank, a magnetic field that travels downward along the rear sidewall of the charging tank. A flow of the molten metal that rotates longitudinally about an axis approximately parallel to the surface of the molten metal is produced in the molten metal. By charging aluminum cutting chips into the molten metal in which the flow is produced, the aluminum cutting chips move with a downward flow of the molten metal, and are immersed in the molten metal. As a result, melting of the aluminum cutting chips can be accelerated.
摘要:
Provided are a non-ferrous metal melt pump having a simple structure capable of tapping non-ferrous metal melt at a low cost without the help of a person, and a melting furnace system using the same. The non-ferrous metal melt pump includes: a container body which includes an inner space and a non-ferrous metal melt passageway, the non-ferrous metal melt passageway having a spiral passageway formed inside a side wall so that a lower end inlet and an upper end open portion, respectively formed in the side wall to be open to the outside, communicate with each other; a magnetic field device, which is rotatable about the vertical axis line, arranged inside the inner space, and the magnetic field device having a magnitude of a magnetic field such that lines of magnetic force moves while penetrating non-ferrous metal melt inside the spiral passageway during the rotation; and a drive device which rotationally drives the magnetic field device.
摘要:
Disclosed is a method for producing alloy ingot including: a step of: charging alloy starting material into a cold crucible in a cold-crucible induction melter, and forming melt pool of the alloy starting material by induction heating in inert gas atmosphere; a step of continuing the induction heating and adding first refining agent to the melt pool, and then reducing the content of at least phosphorus from among impurity elements present in the melt pool; and a step of forming alloy ingot by solidifying the melt, the phosphorus content of which has been reduced. The first refining agent is mixture of metallic Ca and flux, where the flux contains CaF2 and at least one of CaO and CaCl2. The weight proportion of the sum of CaO and CaCl2 with respect to CaF2 ranges from 5 to 30 wt % and the weight proportion of metallic Ca with respect to the melt pool is 0.4 wt % or greater.
摘要:
Provided are a non-ferrous metal melt pump having a simple structure capable of tapping non-ferrous metal melt at a low cost without the help of a person, and a melting furnace system using the same. The non-ferrous metal melt pump includes: a container body which includes an inner space and a non-ferrous metal melt passageway, the non-ferrous metal melt passageway having a spiral passageway formed inside a side wall so that a lower end inlet and an upper end open portion, respectively formed in the side wall to be open to the outside, communicate with each other; a magnetic field device, which is rotatable about the vertical axis line, arranged inside the inner space, and the magnetic field device having a magnitude of a magnetic field such that lines of magnetic force moves while penetrating non-ferrous metal melt inside the spiral passageway during the rotation; and a drive device which rotationally drives the magnetic field device.