A rolling mill (1) which is suitable for performing hot stalling rolling includes: a housing (2); a first roller (9) mountable to the housing (2); a second roller (10) mountable to the housing (2), wherein the position of the second roller (10) relative to the housing (2) is adjustable, thereby adjusting the width of a roll gap (17) between the first roller (9) and the second roller (10), and wherein the roll gap (17) is configured to deform a workpiece (18) when the workpiece (18) is passed therethrough. The rolling mill provides the advantage of optimizing the rolling process.

The invention essentially is characterized in that downstream of the casting machine and upstream of the rolling device, in particular immediately behind shears for cutting the thin slab or the pre-strip, there is provided a scrap removal device, in particular a coiling device that winds the thin slabs or pre-strip into a coil which is removed from the installation as scrap. Therefore, the quality of the coil winding is not important as the wound then slab or pre-strip need not anymore be advanced to the rolling train. The resulting coil can be lifted with a forklift and bind during the emergency maintenance of the rolling train, without use of any personnel. No additional crane is required for scrap removal. In addition, no constructional measures, e.g., construction of a gravel pit for material cut by shears, are necessary.

Described herein are thin metal strips having hot rolled exterior side surfaces characterized as being primarily or substantially free of all prior austenite grain boundaries, or at least primarily or substantially free of all prior austenite grain boundaries, and including elongated surface structure. As a result, because the prior austenite grain boundaries are not primarily or substantially present, all such prior austenite grain boundaries are not susceptible to grain boundary etching due to acid etching or pickling. In particular examples, the thin metal strips undergo hot rolling performed with a coefficient of friction equal to or greater than 0.20 with or without use of lubrication.

Described herein are thin metal strips having hot rolled exterior side surfaces characterized as being primarily or substantially free of all prior austenite grain boundaries, or at least primarily or substantially free of all prior austenite grain boundaries, and including elongated surface structure. As a result, because the prior austenite grain boundaries are not primarily or substantially present, all such prior austenite grain boundaries are not susceptible to grain boundary etching due to acid etching or pickling. In particular examples, the thin metal strips undergo hot rolling performed with a coefficient of friction equal to or greater than 0.20 with or without use of lubrication.

A continuous casting and rolling apparatus includes: a continuous casting device; a cutting device that is disposed at the output side of the continuous casting device and cuts an inner slab produced from the continuous casting device; a rolling device pressing down on the slab and disposed downstream of the continuous casting device in the moving direction of the inner slab; a tunnel furnace which is disposed between the cutting device and the rolling device and heats the slab disposed on the main path of the inner slab that is transferred from the continuous casting device to the rolling device; and a loading adjustment unit which is disposed adjacent to the tunnel furnace and unloads the slab from the main path from the outlet side of the tunnel furnace and loads the slab onto the main path from the inlet side of the tunnel furnace.

A method for manufacturing a ring-rolled product forms the ring-rolled product from a ring material by using a mandrel roll and a main roll. The mandrel roll and the main roll are configured so as to contact inner and outer circumferential surfaces of the ring material, respectively, and are configured so as to press the ring material in a radial direction thereof in a state in which the ring material is rotated in a circumferential direction thereof. The method includes a step of rolling the ring material that includes an operation of induction-heating the main roll by at least one induction heating element and rolling the ring material between the mandrel roll and the main roll, which is induction-heated.

A process for producing metallurgical products, in particular at least of the merchant type, in which there are provided the steps of: a) producing a long casting product by means of a continuous casting machine; b) rolling said long casting product by means of a rolling mill comprising a plurality of rolling stand groups; wherein during step b), said long casting product is heated by first heating means exclusively arranged between one pair of consecutive rolling stand groups; wherein said first heating means are the only heating means between the rolling stand groups of the rolling mill; and an apparatus adapted to perform the aforesaid process.

A rolling mill facility includes: a support part extending along a plate width direction of a steel plate to be rolled; a thickness measurement part supported by the support part and configured to measure a thickness of the steel plate; and a heating part supported by the support part at positions at both sides across the thickness measurement part in the plate width direction and configured to heat both edge portions of the steel plate.

There is provided a production method for on-line improving precipitation strengthening effect of Ti microalloyed hot-rolled high-strength steel, comprising: casting a molten steel with microalloying element Ti added to obtain an ingot; after heating the ingot, subjecting it to rough rolling, finish rolling, laminar cooling and coiling to obtain a hot-rolled coil; after unloading the coil, covering the coil on-line with an insulating enclosure and moving it into a steel coil warehouse along with a transport chain; after a specified period of on-line insulating time, removing the coil from the insulating enclosure, and cooling it to room temperature in air, wherein the microalloying element Ti has a content of 0.03 wt %; the coiling is performed at a temperature of 500-700 C.; said covering on-line with an insulating enclosure means each hot-rolled coil is individually covered with an independent, closed insulating enclosure unit within 60 minutes after unloading; the on-line insulating time is 60 minutes. The method of the present disclosure is characterized by low cost and high efficiency, and is not affected by surroundings.

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).