Patent classifications
B21B45/004
Thin strip production process employing continuous casting and rolling
A process for thin strip production integrates continuous casting and rolling, with steps including continuous casting, rough rolling, induction heating, finish rolling, laminar cooling, high-speed shearing, and coiling. A key feature is the in-line heating between casting and rough rolling, where wide surfaces, narrow surfaces, and corners of the casting blank are heated simultaneously. This process improves rough rolling efficiency, enhances uniformity and thickness stability of thin strips, reduces out-of-tolerance rates, and minimizes rolling-induced cracks.
PEELABLE RESEALABLE MEMBRANE FOR CONTAINERS
The invention comprises a peelable membrane for resealably closing a metal end comprising an outer layer, a tacky layer, and a heat seal layer. The heat seal layer is permanently sealed to the metal end to cover at least one opening in the metal end. The tacky layer causes the peelable membrane to be resealable onto the metal end.
ROLLING SYSTEM
A rolling system includes an induction heater, temperature detectors and, a finishing mill, and a power setting calculation device. The power setting calculation device generates a temperature distribution pattern in a plate thickness direction of a steel material at a temperature control position in an upstream side, on the basis of a temperature detected by the temperature detector. In addition, the power setting calculation device calculates a volume average temperature of the steel material at a temperature control position in a downstream side, at a time when the steel material moves to the temperature control position in the downstream side from the temperature control position in the upstream side, on the basis of the generated temperature distribution pattern. Then, the power setting calculation device calculates an electric power necessary for the induction heater so that the calculated volume average temperature follows a target temperature of the steel material at the temperature control position in the downstream side.
Rapid discharge forming process for amorphous metal
Embodiments herein relate processes for bulk solidifying amorphous metal alloys by rapid capacitor discharge.
PLANT AND METHOD FOR THE PRODUCTION OF METAL
Plant for the production of metal products comprising: a main rolling line configured to roll thin slabs; a main casting line of thin slabs associated downstream to a heating and/or maintenance furnace to heat and/or maintain the cast thin slabs at a uniform temperature, the main casting line being positioned upstream of and aligned with said main rolling line, the main rolling line being configured to roll the thin slabs arriving at least from the heating and/or maintenance furnace; an auxiliary rolling line provided with at least one rolling unit configured to roll conventional slabs and obtain thin slabs, and with a transfer unit positioned downstream of the rolling unit and configured to transfer the thin slabs rolled by the latter to the heating and/or maintenance furnace.
DEVICE FOR INCREASING THE TEMPERATURE OF ELONGATE METALLIC ROLLED STOCK AND FINISHING TRAIN FOR PRODUCING AND/OR WORKING ELONGATE METALLIC ROLLED STOCK
The invention relates to an apparatus (1) for increasing the temperature of elongate metallic rolled stock (2), having a heating unit (3) which comprises induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) for heating the rolled stock (2) along a heating zone (8), and having a conveying device (15) which comprises driving and/or roller table roller elements (27, 28) as active or passive conveying elements (18) for moving the rolled stock (2) along the longitudinal extension (9) of the heating zone (8), wherein the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) are arranged spaced apart from one another in the longitudinal extension (9) of the heating zone (8) in each case by a free space (10, 11, 12), and wherein a sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) and/or opposing lateral guide elements (60, 61) are arranged in each of the free spaces (10, 11, 12) in order to prevent the conveyed rolled stock (2) from coming into contact with the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107).
Method for differential temperature rolling of composite strips based on actions of friction roller and device thereof
A method for differential temperature rolling of composite strips based on actions of a friction roller includes steps of: S1: preparing a metal strip to be bonded, and performing surface treatment on the metal strip to be bonded; S2: frictionally heating the metal strip to be bonded by several sets of friction roller heating devices; measuring a surface temperature of the friction-heated metal strip to be bonded strip by a temperature detector; according to a measured temperature, adjusting a rotation speed of the friction roller in the friction roller heating devices; and S3: transporting the heated metal strip to be bonded to a rolling mill for rolling to obtain a metal composite strip. The invention adopts the friction roller heating devices in rolling process of the metal strip to be bonded.
Method for revamping a plant for producing flat rolled products
A method for revamping a starting rolling plant, for producing a final strip starting from a slab having a determinate starting thickness, including: at least one heating furnace configured to heat at least the slab to a determinate starting temperature; at least one reversible roughing stand configured to subject the slab to one or more rolling passes in order to obtain an intermediate rolled product; and a rolling train disposed operatively in line with the roughing stand, including at least one pre-finishing stand and a plurality of finishing stands and configured to reduce the thickness of the intermediate rolled product, until the final strip having a determinate final thickness is obtained.
Wire rod for ultrahigh-strength steel cord and manufacturing method thereof
The present invention discloses a wire rod for an ultrahigh-strength steel cord and a manufacturing method thereof. The manufacturing method includes: smelting molten steel where inclusions in sizes 5 m are at a number density 0.5/mm.sup.2 and sizes of inclusions are 30 m; casting the molten steel into an ingot blank with a center carbon segregation value of 0.92-1.08; cogging the ingot blank into an intermediate blank with a center carbon segregation value of 0.95-1.05; rolling the intermediate blank into a wire rod; and performing temperature control cooling on the wire rod to obtain a wire rod with high purity, high homogeneity and tensile strength 1,150 MPa. The wire rod may be used for an ultrahigh-strength steel cord with single tensile strength 3,600 MPa.
Casting-rolling system for batch and continuous operation
A method for producing an ultra-thin strip of less than 0.8 mm from cast steel in batch/continuous operation with a casting-rolling system. The method includes casting a thin slab having a casting thickness of 90-150 mm and width of at least 1000 mm at a casting speed of 7 m/min. The thin slab is heated/homogenized to a first temperature in a continuous furnace and subsequently rolled by at least seven final roll stands into an ultra-thin band. Neither the thin slab nor strip undergo inductive heating during production. The thin slab rolling steps include rough rolling the thin slab at the heated/homogenized first temperature by a roughing stand; heating/homogenizing the rough-rolled thin slab to a second temperature by a further continuous furnace; and finally rolling the rough-rolled thin slab at the second temperature to the ultra-thin strip by the final roll stands arranged downstream of the further continuous furnace.