C23C2/003

Apparatus for the continuous hot-dip coating of metal strip

The invention relates to an apparatus for the continuous hot-dip coating of metal strip, preferably steel strip, comprising a melting bath vessel, a snout, which opens in the melting bath vessel, for introducing a metal strip, which is heated in a continuous furnace, into the melting bath in protective gas, and a deflecting roller, which is arranged in the melting bath vessel, for deflecting the metal strip, which is entering the melting bath, in a direction pointing out of the melting bath, wherein that end of the snout which is dipped into the melting bath has at least one runoff chamber which is bounded inward by an overflow wall, downward by a floor and outward by the wall of the snout, wherein the overflow edge of the overflow wall lies at least in sections below the melting bath surface, and wherein a suction line with a pump is connected to the runoff chamber, characterized in that the runoff chamber is provided with at least one through opening through which liquid molten metal can flow out of the melting bath into the runoff chamber, wherein the at least one through opening is arranged lower than the overflow edge.

Continuous galvanizing apparatus for multiple rods

A continuous galvanizing apparatus for multiple rods. The apparatus includes a kettle for heating and retaining a liquid therein with at least a portion of the kettle having an open top. A trough assembly retains liquid therein. The trough assembly is arranged above the kettle open top above the liquid level, with the trough assembly having at least one lower chamber within the kettle below a level of the liquid in the kettle. A pump in the lower chamber draws liquid from the kettle to the trough assembly. A plurality of entry openings are provided in the trough assembly along with a plurality of exit openings opposed to and aligned with the entry openings. Adjacent tubes in the trough assembly are aligned with the plurality of entry and exit openings.

Device for strip guidance in a hot medium (II)

The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) which has two roller pins (23, 39) and is mounted to supporting arms (1, 2, 34, 37, 54, 57) by means of ceramic journal bearings (20, 31), wherein the journal bearings (20, 31) are in each case arranged in a bearing receptacle (45, 55) of the associated supporting arm (1, 2, 34, 37, 54, 57). The invention is characterized in that at least one of the journal bearings (20, 31) in its associated supporting arm (1, 2, 34, 37, 54, 57) is fixed in the bearing receptacle (45, 55) by means of a force-fit that engages on the outer edge of the journal bearing (20, 31) and balances the different heat expansion coefficients of the journal bearings (20, 31) and the bearing receptacle (45, 55).

BEARING SYSTEM, ROLL ASSEMBLY, AND METAL COATING LINE ASSEMBLY INCLUDING SAME
20220307547 · 2022-09-29 ·

A bearing system that accepts a journal of a roll includes a housing defining a cavity and having a forward wall that defines an opening into the cavity, the opening configured to accept the journal through the opening and into the cavity. A sleeve is positioned within the cavity of the housing, the sleeve configured to surround the end of the journal. A first seal is positioned within the cavity of the housing adjacent to the forward wall of the housing, the first seal having an engagement surface. A second seal is positioned within the cavity of the housing and operably connected to the sleeve, the second seal having an engagement surface in contact with the engagement surface of the first seal.

STEEL-STRIP PRODUCTION APPARATUS

A steel-strip production apparatus adapted to produce a hot-dip-plated steel strip and a cold-rolled steel strip includes a continuous annealing furnace, a snout connected to the continuous annealing furnace, a contact-type seal plate device and a noncontact-type seal roll device, a hot-dip-plating tank that is movable, and a roll configured to turn the path direction of the steel strip after passing through the snout, wherein a hot-dip-plated steel strip production unit configured to produce a hot-dip-plated steel strip by bringing the steel strip continuously annealed in the continuous annealing furnace into the hot-dip-plating tank; and a cold-rolled steel strip production unit configured to produce a cold-rolled steel strip by transferring the steel strip continuously annealed in the continuous annealing furnace without causing the steel strip to pass through the hot-dip-plating tank, are configured to be switchable with one another.

Method and apparatus for the production of carbon fibre reinforced aluminum matrix composite wires

The invention relates to a method for the production of carbon fiber reinforced aluminum matrix composite wires by drawing carbon fibers through molten salt and molten aluminum in such a way that the molten aluminum and the molten salt are spatially separated, and the carbon fibers are drawn through first the molten salt, then the molten aluminum separated from it. The invention further relates to an apparatus for the implementation of the method.

METHOD AND DEVICE FOR COATING A METAL STRIP

A method and a device for coating a metal strip with a coating material that is still liquid at first. During the coating, the coated metal strip runs through a roller pair. One of the rollers of the roller pair can be adjusted toward the other as a correction roller in order to eliminate a possible curvature of the metal strip. Then the metal strip runs through a blow-off apparatus for blowing off surplus coating. In order to prevent an uneven thickness distribution of the coating on the metal strip even when the correction roller of the roller pair has been adjusted, the actual position of the metal strip is controlled to a specified setpoint center position in the slot of the blow-off apparatus by an appropriate movement of the blow-off apparatus.

Plating adhesion amount control mechanism and method for controlling an adhesion amount by comparing a plating adhesion amount estimation value at an upstream position and a plating adhesion actual amount at a downstream position

When a portion for measuring the plating adhesion amount reaches an upstream side position, plating adhesion amount estimation values are calculated by using a plating adhesion amount estimation expression at positions away from a position that faces the distance sensors, that is, the upstream side position, by strip-width direction distances, of the surfaces of the steel strip. When the portion for measuring the plating adhesion amount reaches a downstream side position, the strip-width direction distances of the plating adhesion amount meters are matched to the strip-width direction distances, and the plating adhesion amount actual measurement values are obtained. The plating adhesion amount estimation expression is corrected on the basis of the differences between the plating adhesion amount estimation values and the plating adhesion amount actual measurement values. Accordingly, the control accuracy of the plating adhesion amount is improved.

METHOD OF PRODUCING THERMAL SPRAY POWDER, MANUFACTURE APPARATUS OF THERMAL SPRAY POWDER, AND THERMAL SPRAY POWDER PRODUCED BY THE PRODUCING METHOD

A method for producing a thermal spray powder includes: a preparing step of preparing a powder mixture containing a first particle made from zirconia-based ceramic containing a first additive agent and a second particle made from zirconia-based ceramic containing a second additive agent, the powder mixture having a 10% cumulative particle diameter of more than 0 μm and not more than 10 μm; and a secondary-particle producing step of producing a plurality of secondary particles each of which includes the first particle and the second particle sintered with each other.

Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continuous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip
09759491 · 2017-09-12 · ·

A continuous annealing furnace for annealing steel strips that is a vertical-type annealing furnace is configured so that part of gas inside the furnace is drawn and introduced to a refiner disposed outside the furnace including an oxygen removing apparatus and a dehumidifying apparatus, oxygen and moisture contained in the gas are removed to lower the dew point of the gas, and the gas having a lowered dew point is put back into the furnace. At least one gas inlet through which gas is drawn from the furnace into the refiner is disposed in the vicinity of the entry side of the furnace at a distance of 6 m or less in the vertical direction and 3 m or less in the furnace-length direction from the steel-strip-introduction section located at the lower part of the heating zone.