摘要:
A heat treatment apparatus (S1) includes a cooling chamber (3a) configured to perform cooling of a treatment object (X), a conveyance chamber (1) installed above the cooling chamber (3a) and configured to convey the treatment object (X), a lift table (3d) on which the treatment object (X) is placed, and a lift mechanism (7) having a driving apparatus (7a) installed above the lift table (3d) and configured to raise and lower the lift table (3d) between the cooling chamber (3a) and the conveyance chamber (1) using the driving apparatus (7a).
摘要:
It was difficult until now to carry out intermediate repairs of monolithic refractory lining walls of steel casting and handling ladles when the slag area of the lining was worn before other areas. According to this new process for reconstructing the refractory lining in the upper area of the wall, repairs may be economically carried out in that the gap between the lower end of the template and the lining that projects under the area to be reconstructed is sealed by inflating a hose-like sealing body (7) and by deflating again the sealing body (7) before removing the template. This process is useful for steel casting and handling ladles and for similar metallurgical vessels.
摘要:
A method of manufacturing an open top, walled member (11) for containing a molten metal, especially a flowing molten metal or repairing or reconstructing a worn or damaged member includes the step of forming the inner walls (19) or a mold which define the inner surfaces of the walled member of an open metal mesh screen (21) which is meltable by the molten metal which is to be contained and transferring, usually by pumping, an alumina-silicon carbide casting compound (37) into the space between the open mesh metal screen and the outer walls (15) defining the mold, which outer walls may be in situ structures. If an existing walled member is being repaired or reconstructed, any damaged or worn portions of the existing walled member are removed and the casting compound is poured in to replace these portions. The next step is to apply heat to dry the casting compound while the open mesh screen of the mold remains in place in contact with the casting compound. The final step involves removing the open screen mesh by flowing hot molten metal into the open top, walled containment member.
摘要:
Cette installation comporte un moule de forme (1, 2) adapté à la géométrie du conteneur (C) et réalisé en plusieurs éléments pour permettre une libre dilatation du moule en cours d'utilisation, des moyens (3, 4, 5) de support et de manutention du moule (2, 3), des moyens (6, 14) de centrage et de fixation du moule par rapport au conteneur (C) de manière à ménager entre la paroi interne du conteneur (C) et le moule un espace destiné à recevoir le béton réfractaire, et des moyens (7, 8, 11) d'alimentation dudit espace en béton réfractaire.
摘要:
The invention relates to a method and device for inserting elongated steel workpieces into a transport grate (1), which has to be conveyed therewith through a heat-treatment furnace in order to subject the workpieces to a heat treatment. According to the invention, the transport grate (1) is provided with placement cavities (3) for the workpieces and with holding openings (7), which are located above the placement cavities (3) at a distance therefrom, whereby the workpieces extend through the holding openings (7) and, when inserted, are laterally held by the holding openings (7) at a distance therefrom. A material handling robot (B) is provided whose paths and angles of movement are measured by a position measuring system and are forwarded to an electronic control. A feeler mandrel (F) with a centering cone (30) is firstly immersed into the holding opening (7) in order to determine the optimal position of the workpiece subsequently inserted by the material handling robot. This results in preventing damages to the workpiece when inserting the same into the transport grate in the instance that the transport grate has been deformed by repeatedly occurring thermal effects.
摘要:
Method and device to control the axial position of slabs emerging from continuous casting applied in rolling plants comprising at least a casting machine (11), a heating and/or temperature maintenance furnace (15) and a roughing and pre-finishing (16) or finishing train (19) comprising at least one rolling stand (17), the method serving to align the axis (32) of a slab (24) entering the furnace (15) with the axis (25) of the first rolling stand (17), the method providing to control the axial position of the slab (24) and to activate at least a thruster element (26) able to be introduced inside the furnace (15) to act on the edge of the slab (24) and displace it laterally according to a measured discrepancy between the axis (32) of the slab (24) and the axis (25) of the rolling stand (17), wherein the thruster element (26) has a contact element (28) able to cooperate with the edge of the slab (24) advancing inside the furnace (15).
摘要:
A method is provided for installing a refractory lining in a blast furnace or other metallurgical vessel. A consumable form is installed along an inner surface of an outer shell of the metallurgical vessel. The consumable form is spaced apart from the outer shell. The metallurgical vessel is then filled with burden, which supports the consumable form. Casting composition may then be inserted between the consumable form and the outer shell. The casting composition is heated for a period of time before the burden is ignited. Cables which are lowered from the top of the vessel and secured at a lower end of the vessel may be used. Tubes mounted on panels may be threaded along the cables to position the panels in constructing the consumable form.
摘要:
The invention relates to a method and device for inserting elongated steel workpieces into a transport grate (1), which has to be conveyed therewith through a heat-treatment furnace in order to subject the workpieces to a heat treatment. According to the invention, the transport grate (1) is provided with placement cavities (3) for the workpieces and with holding openings (7), which are located above the placement cavities (3) at a distance therefrom, whereby the workpieces extend through the holding openings (7) and, when inserted, are laterally held by the holding openings (7) at a distance therefrom. A material handling robot (B) is provided whose paths and angles of movement are measured by a position measuring system and are forwarded to an electronic control. A feeler mandrel (F) with a centering cone (30) is firstly immersed into the holding opening (7) in order to determine the optimal position of the workpiece subsequently inserted by the material handling robot. This results in preventing damages to the workpiece when inserting the same into the transport grate in the instance that the transport grate has been deformed by repeatedly occurring thermal effects.