摘要:
Arranged are a twin- or single-roll continuous casting machine 1 supplied with molten metal 4 from a tundish 3 arranged above so as to continuously cast a strip 6 with a predetermined width, a trimmer 16 arranged downstream of the continuous casting machine to trim widthwise edges of the strip 6 and a rolling mill 17 arranged downstream of the trimmer 16.
摘要:
The rolling mill includes upper and lower work rolls, a roll bending apparatus for applying a bending force to the upper and lower work rolls, a roll shifter for axially shifting the upper and lower work rolls in opposite directions, and a back-up roll for supporting the upper and lower work rolls. The upper and lower work rolls have a bus having a contour comprising first to fifth regions. The rolling mill is adapted to have the large changability of plate crown effected by the roll shifting on plates with narrow or intermediate widths. The use of a combination of roll shifting and roll bending causes contours of the upper and lower work rolls to overlap deflection of the upper and lower work rolls, resulting in that a smooth roll diameter profile across the width of the plate to be rolled where the upper and lower work rolls contact the plate. Thus, it is possible to minimize the difference in a roll diameter, and to enhance the plate crown controllability, even for a plate having an intermediate or narrow width.
摘要:
A roll press apparatus performs press working on objects to be shaped and a sheet, on which the objects to be treated are disposed in a gap between first and second rolls that are disposed parallel to each other so as to face each other. Crown shapes of the first and second rolls include inclined areas that are inclined with respect to rotation axes of the first and second rolls. The roll press apparatus includes a roll moving unit that moves the first and second rolls in opposite directions along rotation axis directions of the first and second rolls.
摘要:
Even when a cell electrode plate with broader width is press formed to enhance bulk density of electrode active material, it is made possible to positively and reliably provide a high-quality cell electrode plate with good productivity. From upstream to downstream in a travel direction of a cell electrode plate including a core member with electrode active material applied thereon, an uncoiler, a tension applicator, a four-high mill type roll press device, a thickness detector, a tension applicator and a coiler are arranged in the order named.
摘要:
A magnesium alloy hot rolling method includes: a first rolling step in which a magnesium plate (M0, M1) is rolled reciprocatingly between an upstream heating furnace (2) which is located on an upstream side of a rolling mill (1) and which heats the magnesium plate (M0, M1), and a upstream heating furnace (3) which is located on a downstream side of the rolling mill (1) and which heats the magnesium plate (M0, M1); and a second rolling step in which the temperature of respective end portions of the magnesium plate (M0, M1) on both the upstream and downstream sides is maintained while the magnesium plate (M0, M1) is being rolled reciprocatingly between an upstream temperature maintaining apparatus (5) which transports the heated magnesium plate (M0, M1) while maintaining the temperature thereof, and a downstream temperature maintaining apparatus (6) which transports the heated magnesium plate (M0, M1) while maintaining the temperature thereof. According to the magnesium hot rolling apparatus of the present invention and to the magnesium hot rolling method of the present invention which uses this apparatus, it is possible to prevent any deterioration in the quality of a product which is due to temperature variations during the hot rolling of magnesium alloy.
摘要:
A rolling mill, including: a casting device that casts molten metal to form a slab with a predetermined width; a pair of finishing milling rolls that shape the slab by rolling; and a movement device capable of moving the finishing milling rolls along respective axis directions thereof, in which a contour of a peripheral surface of each of the finishing milling rolls has a shape in which a first contour and a second contour are overlapped, the first contour including: edge regions with a shape in accordance with an average value of thickness variation in edge portions so as to make uniform a rolling reduction in a width direction for the slab with an edge thickness equal to the average value; and a central region that is interposed between the edge regions, and the second contour including edge regions which have an inclination angle steeper with respect to the axis direction than a central region so that the distance between facing edge portions of one of the pair of finishing milling rolls and the other of the pair of finishing milling rolls changes when the finishing milling rolls are moved by the movement device in opposite directions.
摘要:
Even when a cell electrode plate with broader width is press formed to enhance bulk density of electrode active material, it is made possible to positively and reliably provide a high-quality cell electrode plate with good productivity.From upstream to downstream in a travel direction D of a cell electrode plate 10 comprising a core member with electrode active material applied thereon, an uncoiler 1, a tension applicator 3, a four-high mill type roll press device 4, a thickness detector 5, a tension applicator 6 and a coiler 9 are arranged in the order named.
摘要:
A roller for in-furnace conveyance (1) which is provided with a fitting section (30) in which a fitting hole (11) of a body section (10) and a fitting shaft (24) of a shaft section (20) are fitted, and which constitutes a single roller by welding of the fitting section, wherein the fitting section has a first fitting section (31) in which fitting occurs with a prescribed interstice at a position separated from the weld position, and a second fitting section (32) in which fitting occurs with an interstice larger than that of the first fitting section at a position adjacent to the weld position.
摘要:
In a magnesium alloy hot rolling apparatus in which winders that are able to apply heat to and then maintain the temperature of a magnesium alloy sheet while this sheet is in a coiled state are installed on both entry and exit sides of a rolling mill, and in which the magnesium alloy sheet undergoes a sequential thickness reduction via a plurality of reverse rollings, the rolling mill is provided with working rollers and back-up rollers whose surface temperature can be heated to a particular fixed temperature and then maintained at this temperature. According to the present invention, it is possible to prevent any deterioration in the quality of a product which is caused by temperature variations during the hot rolling of the magnesium alloy sheet, and it is possible to improve the yield and increase productivity.
摘要:
The rolling mill comprises a pair of work rolls for rolling a plate material in the thickness direction, a guide for guiding the leading end of the plate material between the work rolls, and a rolling oil supply member for supplying rolling oil between the work rolls through a rolling oil passage formed within the guide. The rolling mill further comprises a temperature adjusted oil passage formed within the guide separately from the rolling oil passage, and a temperature adjusted oil supply member for applying temperature adjusted oil having a different temperature from the rolling oil to the work rolls through the temperature adjusted oil passage so as to control the crown rate of the work rolls, improving the controllability of the crown rate of the work roll.