The invention concerns an exchangeable nozzle for a nozzle changer system for billet casting, a method for manufacturing such a nozzle, a nozzle changer system comprising such a nozzle and a tundish comprising such a nozzle changer system.

A shoe for dispensing molten lead into a mold cavity of rotating drum to continuously cast a web of a plurality of serially connected grids for lead acid batteries. The shoe may have an elongate orifice slot in a face confronting the drum, a molten lead supply slot opening into an upper recessed portion of the orifice slot and an excess molten lead return slot communicating with the recessed portion downstream of the supply slot.

A method of making weathering steel by preparing a molten melt producing an as-cast carbon alloy steel strip with a corrosion index of at least 6.0 comprising, by weight, 0.02%-0.08% carbon, <0.6% silicon, 0.2%-2.0% manganese, <0.03% phosphorus, <0.01% sulfur, <0.01% nitrogen, 0.2%-0.5% copper, 0.01%-0.2% niobium, 0.01%-0.2% vanadium, 0.1%-0.4% chromium, 0.08%-0.25% nickel, <0.01% aluminum, and the remainder iron and impurities. The molten melt is solidified and cooled into a cast strip ≧4 mm in thickness in a non-oxidizing atmosphere. The strip is hot rolled in an austenitic temperature range above Ar.sub.3 to between 10% and 50% reduction, cooled at above 20° C./s and coiled below 700° C. to form a steel strip with a microstructure comprising bainite and acicular ferrite with more than 70% niobium in solid solution. Then, age hardening the strip resulting in a yield strength of at least 550 MPa and a total elongation of at least 8%.

The invention relates to a nozzle for producing microdroplets of metal using gas flow, to a nozzle for producing microdroplets using electrodispersion, to a combination of a melt spinner for forming elongate metal fibers with a nozzle and to a method of forming microdroplets using at least one of a gas flow and electrodispersion.

The present disclosure discloses a molten aluminum erosion resistant casting tip paint, the casting tip paint is formed by mixing magnesia-alumina spinel, alumina, magnesia, water, sodium tripolyphosphate and sodium carboxymethyl cellulose, wherein the proportions of various raw materials for the casting tip paint are as follows: magnesia-alumina spinel of 40-50 wt %, alumina of 10-20 wt %, magnesia of 5-10 wt %, water of 20-40 wt %, sodium tripolyphosphate of 0-10 wt %, and sodium carboxymethyl cellulose of 0-10 wt %. The present disclosure also discloses a preparation method of a molten aluminum erosion resistant casting tip. The molten aluminum erosion resistant casting tip paint provided by the present disclosure can be evenly coated onto the inner wall of the casting tip, so as to form a compact molten aluminum erosion resistant coating, thereby preventing infiltration and erosion of the molten aluminum.

The invention relates to the reduction of core losses in soft magnetic applications utilizing amorphous foil as the core material. Amorphous foil is known to have lower losses when compared to crystalline silicon steel laminations. It is found that a reduction of 10-40% of losses can be achieved over the current state of the art amorphous material by mechanical scribing of the surface of the soft magnetic laminations comprising the wound core in power conditioning devices such as a transformer. The scribing process introduces control of the magnetic domains causing ease of magnetic flux reversal

A weathering steel made by preparing a molten melt producing an as-cast carbon alloy steel strip with a corrosion index of at least 6.0 comprising, by weight, 0.02%-0.08% carbon, <0.6% silicon, 0.2%-2.0% manganese, <0.03% phosphorus, <0.01% sulfur, <0.01% nitrogen, 0.2%-0.5% copper, 0.01%-0.2% niobium, 0.01%-0.2% vanadium, 0.1%-0.4% chromium, 0.08%-0.25% nickel, <0.01% aluminum, and the remainder iron and impurities. The molten melt is solidified and cooled into a cast strip 4 mm in thickness in a non-oxidizing atmosphere. The strip is hot rolled in an austenitic temperature range above Ar.sub.3 to between 10% and 50% reduction, cooled at above 20° C./s and coiled below 700° C. to form a steel strip with a microstructure comprising bainite and acicular ferrite with more than 70% niobium in solid solution. Then, age hardening the strip resulting in a yield strength of at least 550 MPa and a total elongation of at least 8%.

In one embodiment, a lead strip caster for battery grids includes a ladle, a nozzle, and a pair of rollers. The lead strip caster produces a continuous lead strip for use as battery positive plate grids. The ladle has an inlet to receive molten lead and has an outlet. The nozzle has at least one passage that communicates with the outlet of the ladle in order to receive molten lead from the ladle. The first roller is situated at a first exterior side of the nozzle. The first roller rotates via a first driver. The second roller is situated at a second exterior side of the nozzle. The second roller rotates via a second driver.

In one embodiment, a lead strip caster for battery grids includes a nozzle, a pair of rollers, and a molten lead supply to the nozzle. The lead strip caster produces a continuous lead strip for making battery grids. The nozzle has at least one passage that communicates with generally opposed faces of the nozzle at least partially received between the rollers to supply molten lead to exterior surfaces of the corotating rollers to form a continuous solid strip of lead from which battery grids may be made.

A casting nozzle for feeding molten metal into a moving casting mold of a caterpillar casting machine, including an elongated housing body having a slot-like outlet side (A), wherein multiple flow passages are formed in the housing body along its longitudinal direction (x) and over its width direction (B), through which passages molten metal can be channeled in the direction of the outlet side (A) and can be fed from there into the moving casting mold, wherein the housing body is of an at least two-part design in the direction of its height and has at least one upper shell and at least one lower shell, wherein the upper shell and the lower shell are spaced apart from one another by separating webs and the individual flow passages extend between the separating webs.