摘要:
An arrangement and conformation of the discharge openings and channels of a continuous-casting nozzle, together with a specific external profile of the body of the nozzle itself, enable slabs of any thickness, in particular from medium to thin ones, to be cast, which have excellent surface quality and are practically free from inclusions and blowholes.
摘要:
The present invention provides a rotor, a shaft or a sample holder for a centrifugal sintering system, and the present invention relates to a ceramic member for a centrifugal sintering system which is a member consisting of a rotor, a shaft or a sample holder for use in a centrifugal sintering system imparting a centrifugal force field and a temperature field to a molded body of ceramics or metal powder or a ceramic precursor film wherein a rotor for turning a sample holder, a shaft or a sample holder is composed of ceramics, to the ceramic member wherein the rotor which turns the sample holder is composed of conductive silicon carbide ceramics and the rotor alone is selectively caused to self heat by induction heating means to indirectly heat the sample, and to the ceramic member wherein the sample holder is composed of a material with a large dielectric loss and the sample holder alone is selectively heated using dielectric heating means to indirectly heat the sample.
摘要:
The invention provides an improved furnace structure and methods of melting material in furnaces, particularly aimed at reducing the start up time for such furnaces. The furnace (2) defines a container for the molten metal having a maximum depth of molten metal in that container during use. A flow generator (30) for the molten metal within the furnace is fed through a first conduit (32) and supplies maternal back to the furnace through a second conduit (36). The first conduit entrance is provided in the upper 60% of the maximum depth of the molten metal in the container and/or the second conduit exit is provided in the lower 25% of the maximum depth of the molten metal in the container. The flow generator may receive material preferentially from around the periphery of the container and/or direct material towards the centre of the container. The inlet and outlet to the flow generator my be angled downwards towards the container. All of these features improve heat transfer and material circulation within the furnace.
摘要:
The invention relates to a converter gearing, comprising a gear rim (7), which is connected to the pivoting axis (6) of a converter box, said gear rim being engaged with at least one drive pinion (8) of the converter gearing (9) and at least one locking device, which can be pivoted to engage with and be disengaged from the toothed gearing of the gear rim, (7) in the form of a locking arm (12) that is positioned on a horizontal shaft (10) and configured with toothed gearing (11). The aim of the invention is to improve said locking device. To achieve this, the shaft (10) of the locking arm (12) is mounted in at least one terminal bearing (13, 13′) and the locking arm (12) can be engaged with and disengaged from the toothed gearing of the gear rim (7) in a non-positive manner, preferably by means of active force elements (14, 14′) in its end regions. In addition, the shaft (10) of the locking arm (12) is mounted in the housing of the converter gearing (9) by means of two excentric bushes (4, 5), which rotate freely within one another, at each of its ends. The mounting is configured in such a way, that by the independent rotation of the same, an ideal mutual engagement position of the two interacting toothed gearing regions of the locking device (12) and the gear rim (7) can be set.
摘要:
A segmented smelt spout comprising an assembly of different casting shapes wherein one shape constitutes the base segment, which is installable in a chemical recovery unit, and the other shapes are a combination of straight and curved cast segments, which can be used in different combinations to obtain varying spout angles and lengths with the latter segments being supported off the base segment and being held together by a tensioning means that maintains contact between the mating surfaces of each segment while permitting each individual segment to expand and contract thermally.
摘要:
A converter for the production of steel from solid and/or liquid charging substances, such as pig iron and/or scrap and/or sponge iron, includes a refractorily lined refining vessel, a refining device for feeding oxygen or an oxygen-containing gas, and a heating device. In order to obtain the maximum output possible at high scrap charging as well as a high purity of the steel, the heating device includes at least one self-consuming graphite electrode and the refining device, independent of the heating device, either is formed by an oxygen-blowing lance or includes oxygen-containing bottom and/or lateral tuyeres located below the melt bath level.
摘要:
A device for automatically coupling a lance for injecting a fluid into a molten metal bath to a manifold for supplying the fluid to the lance includes means for hitching the lance rigidly to a lance-carrying carriage which can be displaced along a slide rail, and means ensuring the support of the manifold with respect to the lance-carrying carriage and enabling the manifold to be displaced vertically with respect to the lance-carrying carriage, or vice versa.
摘要:
A steel mill system includes a metallurgical furnace and a further processing system such as a continuous casting system and/or one or more stations for treatment of the steel melt. At least one steel ladle is loaded with steel melt below the metallurgical furnace and is moved between the metallurgical furnace and the further processing system. The steel melt is then emptied into the further processing system. In the region of its upper half, the steel ladle is equipped with a carrying mechanism which includes diametrically oppositely disposed running wheels. The steel ladle is movable in a suspended position between the metallurgical furnace, and the further processing system on rails which are adapted to the carrying mechanism.
摘要:
An easily stored and used disposable cover for the opening of a molten metal type ladle is disclosed, which uses transverse ribs of green hardwood above a blanket made up of ceramic fabric batting. The ribs are tied together into an array by means of flexible wires running longitudinally across the ribs and secured to them. The ribs are sized to span across the ladle opening and to hold the blanket thereover, and the cover may be easily rolled up longitudinally so as to assume an easily stored, handled and shipped roll shape. A plurality of wide headed nails hold a sheet of plastic or like material and the blanket to the ribs. The sheet serves to protect the blanket from tearing or catching or binding together and allows it to be unrolled and handled more easily. A wire end handling loop is also provided at the longitudinal ends to aid in placing the cover over the ladle.