Abstract: A particle production apparatus including a generating device, a conveying device, and a straightening device is provided. The generating device includes a tank filled with a dense medium, an electric power source, a first and a second electrical conducting element received in the dense medium and coupled to an anode and a cathode of the electric power source respectively. The conveying device is configured to convey a metal wire into the tank and make the metal wire to contact the first electrical conducting element and the second electrical conducting element in a straight-line direction, so as to produce an electric explosion to form a plurality of particles in the dense medium.

Abstract: A method of making an integrally bladed rotor with hollow blades. A plurality of segmented layers are sequentially placed to form each one of a plurality of blades on a radially outward surface of a hub. This is done using an additive manufacturing process. The placement of the segmented layers also comprises omitting portions of one or more of the plurality of segmented layers to form one or more cavities and intermittently removing a quantity of particles from the one or more cavities using an evacuation tool.

Abstract: A process by which molten solder is purified in-situ, making the soldering process more efficient and yielding better results, particularly for lead-free soldering. Lead-free solder becomes practical for use since the temperature for reliable soldering is reduced. A layer of active additive is maintained on the surface of molten solder for scavenging metal oxide from the solder and assimilating metal oxide into a liquid layer. The active additive is an organic liquid having nucleophilic and/or electrophilic groups. As an example, a layer of dimer acid maintained on a wave soldering apparatus scavenges metal oxide from the bath, and assimilates dross that may form on the surface. Scavenging metal oxide cleanses the bath and lowers viscosity of the solder, and PC boards or the like soldered on the wave have reliable solder joints.

Abstract: Methods, systems, and apparatuses for retaining magnetic properties of magnetic elements while undergoing manufacturing processes are presented. In one embodiment, a manufacturing fixture includes a temperature controlled region suitable for retaining a magnetic element. The manufacturing fixture also includes a cooling mechanism configured to maintain the magnetic element at an acceptable temperature range during a thermally active manufacturing process. The temperature controlled or stabilized region can include a structure configured to receive the magnetic element and a sensor, or sensors. In one embodiment, the sensor can be configured to measure an ambient temperature of the temperature stabilized region. In another embodiment, the sensor can be a magnetic sensor configured to determine a magnetic property of the magnetic element.

Abstract: A system for adding gas to and transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, a device or structure, such as a molten metal pump, for generating a stream of molten metal, and one or more gas-release devices.

Abstract: An immersion device is provided for molten metal, as well as a method for making steel. The immersion device allows a trouble free operation. The immersion device includes a measuring head, a carrier for the measuring head, and a lance detachably connected to the carrier, preferably by a detachable tubular connecting element. A gas path runs from the lance to the detachable tubular connecting element. A gas tight connection is provided between a connecting surface of the lance and the detachable tubular connecting element. The tubular connecting element has wipers in the form of fins, which wipe the connecting surface of the lance during attaching and/or detaching the tubular connecting element and the lance.

Abstract: Apparatus for pre-heating and conveying a metal charge to a container of a melting plant, comprising at least a conveyor channel along which said metal charge is able to advance so as to be delivered to the container, and in which above said conveyor channel at least a hood is disposed which defines a tunnel inside which at least part of the fumes exiting from said container are able to advance. At least a zone of the hood comprises an expansion chamber located above at least a portion of said metal charge, and able to expand and keep said fumes inside it for a minimum desired time of at least 1.5 seconds before they go into contact with the metal charge.

Abstract: An example insulation enclosure for cooling a mold includes a support structure having a top end, a bottom end, and an interior, the bottom end defining an opening for receiving a mold within the interior of the support structure, and insulation material supported by the support structure and extending at least from the bottom end to the top end, wherein one or more thermal properties of at least one of the support structure and the insulation material varies longitudinally from the bottom end to the top end. In some cases, the one or more thermal properties are further varied about a circumference of the support structure.

Abstract: An example insulation enclosure includes an outer shell having an open end and a top end, and an inner shell arranged within the outer shell and including a plurality of sidewall members and a top member. Each sidewall member is independently moveable relative to one another and to the top member, and the plurality of sidewall members and the top member each include a support member and insulation material positioned on the support member. One or more compliant devices arranged between the outer shell and at least one of the plurality of sidewall members and the top member, the one or more compliant devices biasing the at least one of the plurality of sidewall members and the top member against adjacent outer surfaces of a mold disposable within the inner shell.

Abstract: A shaft furnace charging device and cooling system includes a suspension rotor with a charge distributor and stationary housing. The cooling system includes an annular swivel joint arranged coaxially on an axis, connecting stationary and rotary circuit portions. The swivel joint includes forward connections for receiving cooling fluid from the stationary circuit portion and supplying cooling fluid to the rotary circuit portion; return connections for receiving cooling fluid from the rotary circuit portion; and returning cooling fluid to the stationary circuit portion. The swivel joint includes a partition dividing the annular volume into cavities wherein an internal cavity is partially surrounded by an external cavity, and the forward connections are coupled via one of the cavities and the return connections are coupled via the other of the cavities. The swivel joint includes leakage-permitting communication between the external and internal cavities through annular clearances.

Abstract: Provided are a steel for a mechanical structure for cold working, and a method for manufacturing the same, whereby softening and variations in hardness can be reduced even when a conventional spheroidizing annealing process is performed. A steel having a predetermined chemical composition, the total area ratio of pearlite and pro-eutectoid ferrite being at least 90 area % with respect to the total metallographic structure of the steel, the area ratio (A) of pro-eutectoid ferrite satisfying the relationship A>Ae with an Ae value expressed by a predetermined relational expression, the average equivalent circular diameter of bcc-Fe crystal grains being 15-35 ?m, and the average of the maximum grain diameter and the second largest grain diameter of the bcc-Fe crystal grains being 50 ?m or less in terms of equivalent circular diameter.

Abstract: An example insulation enclosure includes a support structure having at least an inner frame and providing a top end, a bottom end, and an opening defined in the bottom end for receiving a mold within an interior of the support structure, and a radiant barrier positioned within the interior of the support structure, the radiant barrier including a front surface arranged to face the mold and a back surface facing the support structure, wherein the radiant barrier interposes the mold and the support structure to redirect thermal energy radiated from the mold back towards the mold.

Abstract: A die casting machine and a control method for avoiding damage to devices by performing operation control of a hydraulic operating means and an electric servomotor, that are adapted as drive sources in an injection step, separately and not performing coordinate control. The die casting machine includes a tubular injection sleeve, an injection plunger, an electric servomotor and a hydraulic operating means that are used as a drive source of an injection step, and a control means which controls the electric servomotor and the hydraulic operating means separately, when injecting and filling the cavity of the mold, which has been closed, with the molten metal by the advancing of the injection plunger, during a low-speed injection step and a high-speed injection step which is performed at a higher speed than the low-speed injection step, in the injection step.

Abstract: The invention relates to a fireproof (refractory) ceramic impact pad (also called impact pot, German: Pralltopf), which is typically installed along the bottom of a vessel treating metallurgical melts at an area where the metal melt, poured into the vessel, normally hits the vessel bottom. Insofar the impact pot has the task to protect the refractory bottom of the metallurgical vessel (to reduce its wear) and/or to distribute the metal melt within the vessel.

Abstract: In a closure plate for a slide closure on the spout of a container containing molten metal, two outer longitudinal sides, a flow-through opening disposed on a central longitudinal axis of the closure plate and a closing surface passing from the latter are provided. There are formed on each of these two outer longitudinal sides, at least two shoulder surfaces serving as clamping surfaces or as centring surfaces of the closure plate which are at an angle to the longitudinal axis and tapering inward. At least on the shoulder surfaces on the side of the closing surface, adjoining outer sides are provided which are respectively at a smaller angle to the longitudinal axis than those of the shoulder surfaces.

Abstract: Gas purging element (10) for metallurgical applications, comprising the following features in its mounted state: a ceramic refractory body (10, 30) with a lower end and an upper end, the upper end features an upper front surface, the lower end features a lower front surface (12), a depression (20) extends from the lower front surface (12) into the lower end of the ceramic refractory body (10), the depression (20) comprises a first part (16, 16?, 16?) of a detachable, form-fit connection to a gas connection element (50), a fluidic connection for a treating gas through at least one gas permeable section (30) of the ceramic refractory body (10) is provided between the depression (20) and the upper front surface.

Abstract: An apparatus for injecting gas into a vessel is disclosed. The apparatus comprises a gas flow duct from which to discharge gas from the duct, an elongate central structure extending within the gas flow duct, and a plurality of flow directing vanes disposed about the central structure adjacent the forward end of the duct to impart swirl to a gas flow through the forward end of the duct. The apparatus also comprises cooling water flow passages in the vanes that have inlets at the forward ends of the vanes and outlets at the rear ends of the vanes.

Abstract: A hot-rolled austenitic iron/carbon/manganese steel sheet is provided. The strength of which is greater than 900 MPa, the product (strength (in MPa)×elongation at fracture (in %)) of which is greater than 45000 and the chemical composition of which includes, the contents being expressed by weight 0.5%?C?0.7%, 17%?Mn?24%, Si?3%, Al?0.050%, S?0.030%, P?0.080% and N?0.1%. A remainder of the composition includes iron and inevitable impurities resulting from the smelting. A recrystallized fraction of the structure of the steel is greater than 75%, a surface fraction of precipitated carbides of the steel is less than 1.5% and a mean grain size of the steel is less than 18 microns. A reinforcing element is also provided.

Abstract: A method for continuous thin strip casting comprises: introducing molten steel through a long nozzle into a tundish from a ladle, the tundish is one strand tundish, and the molten steel flows below a weir, then passes a first dam and enters a channel with an induction heating device, and the heated molten steel then flows out from an outlet at the other side of the tundish to a nozzle also with an induction heating device for casting. The distances between the weirs of the tundish and the channel have optimal distance ranges. The present invention can improve the casting stability and the quality of the casting strip.

Abstract: A method of operating a blast furnace by blowing a pulverized coal at an amount of not less than 150 kg/t?p from tuyeres through a lance into a blast furnace, wherein when the operation is performed under a condition that lump coke charged from a furnace top has a strength defined in JIS K2151 (DI15015) of not more than 87%, the pulverized coal blown through the tuyere contains not more than 60 mass % as a weight ratio of coal having a particle size of not more than 74 ?m and has an average volatile matter of not more than 25 mass %, and a blast temperature blown through the tuyere is not higher than 1100° C., oxygen is simultaneously blown into the furnace with the blowing of the pulverized coals through the lance and a gas having an oxygen concentration of 60 vol %-97 vol % is used as a carrier gas for the blowing of the pulverized coal.