4664results about "Crucible furnaces" patented technology

The present invention provides a system and method for uniform coating of a substrate at high deposition rates by evaporating a coating material in a vacuum chamber. The system includes an evaporator having a heating crucible for containing a coating material to be evaporated and a generally planar heat source disposed so as to heat a surface of a coating material contained in the heating crucible. Preferably, the heat source is manufactured from a ceramic or intermetallic material and includes a first layer defining a first set of openings and a second layer defining a second set of openings wherein the second layer overlies the first layer and is spaced apart therefrom. The first and second sets of openings allow the evaporated coating material to pass therethrough for dispersion of the coating material in a deposition zone defined by a containment shield disposed above the heat source.

A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.

Methods of making amorphous material and ceramic materials. Embodiments of the invention can be used to make abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.

The invention relates to an inoculant for the manufacture of cast iron with lamellar, compacted or spheroidal graphite. The inoculant comprises between 40 and 80% by weight of silicon, between 0.5 and 10% by weight of calcium and/or strontium and/or barium, between 0 and 10% by weight of cerium and/or lanthanum, between 0 and 5% by weight of magnesium, less than 5% by weight of aluminium, between 0 and 10% by weight of manganese and/or titanium and/or zirconium, between 0.5 and 10% by weight of oxygen in the form of one or more metal oxides, the balance being iron, said inoculant further comprising between 0,1 and 10% by weight of sulphur in the form of one or more metal sulphides. The invention further relates to a method for the production of the inoculant.

A crucible with 22 inches or more in inner diameter, which has a small deformation of the body under exposure to abundant heat radiation during pulling a single crystal, and which has no practical problem, and a method of producing the same are disclosed. The method comprises the steps of: feeding first silicon dioxide powder along an inner surface of a rotating mold having a gas permeable wall to form a piled up layer of the first silicon dioxide powder; heating the piled up layer from the inside space of the mold to have the first silicon dioxide powder molten to provide the opaque outer layer as a substrate, while vacuum suction is effected through the wall; generating a high temperature gas atmosphere in an inside space of the substrate during or after the formation of the opaque outer layer; feeding second silicon dioxide powder into the high temperature gas atmosphere to have the second silicon dioxide powder molten at least partly; and directing the second silicon dioxide powder in an at least partly molten form toward an inner surface of the substrate to have the second silicon dioxide powder deposited on the inner surface of the substrate to thereby form the transparent inner layer thereon, the transparent inner layer being of a predetermined thickness and substantially free of bubbles.

Embodiments described herein relate to porous materials that may be employed in various filtration, purification, and/or separation applications. In some cases, the porous materials may be thin, flexible, and fabricated with control over average pore size and/or the spatial distribution of pores. Such porous materials may be useful in, for example, desalination.

The present invention provides self-heating apparatuses and methods of heating using an aqueous solution and a solid chemical reactant mixture. The solid chemical reactant mixture may include magnesium chloride, calcium chloride, and/or calcium oxide.

A pressure-adjustable casting method includes such steps as putting casting mould and molten metal respectively in upper sealed chamber and crucible, vacuumizing them, filling inertial gas or compressed air in the crucible, pressing the molten metal in mould cavity along the flow-up tube under the action of adjustable pressure difference, vacuumizing the vacuum hood while adjusting the pressure in crucible to quickly change it from negative pressure to positive one, solidifying the cast workpiece, and releasing the pressure. Said crucible for adjusting pressure is composed of crucible body, water cooling flange, and pressure adjusting pipe interface.

An autofeeding low application temperature hot melt application system comprising a hot melt tank, a compact integrated auto feed, and operates at temperatures of not more than 260° F.

A molten metal processing apparatus selected from a pump, a degasser, a flux injector, and a scrap submergence device constructed to include at least one element comprised of C/C composite.

A flux contains resin having film forming ability, activator, solvent, and at least one complex selected from silver complex and copper complex. The flux is used when soldering is performed onto a circuit having electroless nickel plating or further having gold plating on the electroless nickel plating. Allowing a barrier layer of silver or copper to deposit on the surfaces of lands suppresses the diffusion of nickel into the melted solder alloy during soldering, and also prevents phosphorous concentration. This improves the bonding strength of soldering and suppresses the reduction deposition of silver and/or copper to portions other than circuit patterns.

A packaging and applicator device for a formulation used, for example, for make-up and/or care of keratinic fibers. The device includes a reservoir in which the formulation is placed, and an applicator capable of being loaded with a quantity of the formulation. The reservoir includes a heating device capable of heating at least a portion of the applicator and the quantity of product with which it is loaded when the device is not in a closed position of the reservoir. Heating is preferably permitted when the applicator is in an intermediate position, held at the level of an opening in the reservoir, with the circumference of this opening having at least one heated wall. The heated wall preferably incorporates a stripper element mounted in the reservoir opening.

Particular aspects provide a garment for simulating chronic obstructive pulmonary disease (COPD), comprising a particularly efficacious combination of a thorax-constricting garment portion, and a diaphragm-impeding garment portion, along with an optional restrictive airway mask. The thorax-constricting portion has a frontal abdominal-thoracic plate member and tensioning means extendible around a wearer's thoracic circumference to provide for constrictive thoracic-abdominal tensioning. The diaphragm-impeding portion has a projection (e.g., weighted projection or pouch) projecting away from the wearer-proximal surface of the frontal plate member, which is operative with the thorax-constricting portion to simultaneously constrict thorax expansion while impeding diaphragm contraction and downward movement. Additional aspects provide a method for simulating COPD, comprising tensioning a thoracic-abdominal constricting garment, having diaphragm-impeding means and optional restrictive airway mask, around a wearer's thoracic-abdominal area at a tension, and for a time period sufficient to simulate at least one symptom or effect of COPD.

Disclosed herein is an apparatus for manufacturing a polycrystalline silicon ingot for solar batteries having a door control device using a hinge. The apparatus includes a vacuum chamber, a crucible, a susceptor which surrounds the crucible, a heater which heats the crucible, and an insulation plate which is disposed below the susceptor and has an opening therein. The apparatus further includes a cooling plate which moves upwards through the opening of the insulation plate and comes into close contact with or approaches the lower end of the susceptor, a cooling plate moving unit which actuates the cooling plate, a temperature sensor which measures the temperature of the crucible, and a control unit which controls the temperature in the crucible and the cooling plate moving unit. Furthermore, a door is provided on the insulation plate to open or close the opening of the insulation plate. The hinge is provided between the door and the insulation plate. Thus, after the raw silicon material is melted, when the cooling plate moves upwards to cool the crucible and thus pushes the lower surface of the door upwards, the door is opened by the hinge in a swinging manner, and when the cooling plate approaches or comes into contact with the lower end of the susceptor, one end of the opened door is leaned on a corresponding surface of the cooling plate.

An electric thermos jug comprises generally from the top to the bottom a lid assembly, a spout assembly, a double-layer vacuum body, a heating element, an underbody, and a base. An insulating plate and an insulating material layer are provided under the heating element inside the underbody of the jug. The lid is two-layer structure comprising an upper lid and lower lid with an air plenum in between. The electric thermos is convenient for use and effective in heat insulation due to the excellent air tightness of the components. The temperature inside the jug can be maintained for a long time without the need of repetitive heating. As a result, it can maintain a good water quality and is energy efficient. A safety valve is also employed.

The invention provides a copper smelting device and a copper smelting process. In the device, a shell of a rotary horizontal type cylindrical furnace body is made of a steel plate; an inner liner is made of a refractory material; the furnace body passes through two supporting rings and is supported on a foundation through four supporting rollers; one side of the furnace body is provided with a transmission mechanism; a motor is used for driving a speed reducer to drive the furnace body to rotate along a central shaft through a gear and a gear ring on a cylinder; the furnace body is partitioned into a smelting area, a blowing area and a refining area by a refractory brick retaining wall; a gap is formed at the bottom of the retaining wall; the bottoms of all areas are provided with a spray gun respectively; a charging hole is formed above the smelting area; a flue hole and a fluxing agent hole are formed above the blowing area; a main burner nozzle and an auxiliary burner nozzle are arranged on the shell of the furnace body end close to the two sides of the smelting area and the refining area respectively; and a slagging hole and a copper discharging hole are formed on the shell of the furnace body end on one side of the auxiliary burner nozzle. The device has a simple structure, a reasonable design and extremely good popularization value and application value and is energy-saving and environment-friendly.