摘要:
Elimination of play between rolls 13 and main bearings 12 in a non-forming area and forming of material to be formed in a forming area are repeated while play between a housing 10 for the rolls 13 and main bearing axle boxes 11 is always eliminated.
摘要:
A conveying device includes a plurality of conveying rollers supported in parallel at predetermined intervals, and conveys a workpiece to a heat-retaining/heating furnace from a rolling mill by the conveying rollers. The conveying device includes an impact prediction data collecting unit and a control unit. The impact prediction data collecting unit acquires data on the upstream of the heat-retaining/heating furnace. The data is used to predict the magnitude of an impact applied to rollers in the furnace, which are positioned in the heat-retaining/heating furnace, of the conveying rollers by the workpiece. The control unit predicts the magnitude of an impact from the data, which is acquired by the impact prediction data collecting unit, and adjusts the conveying speed of the workpiece in the heat-retaining/heating furnace according to the magnitude of the impact.
摘要:
A recoiling facility for a magnesium alloy sheet (S) is provided with: an unwinder (1) which is able to unwind a coil material (C) formed by winding magnesium alloy onto a fixed mandrel; a heating furnace (4) which heats to a predetermined temperature the magnesium alloy sheet (S) which has been unwound from the coil material (C); a trimmer (2) which trims both side edges of the sheet; and a winder (3) which rewinds the magnesium alloy sheet (S). According to the present invention, it is possible to rewind a coil material formed by winding a magnesium alloy sheet onto a fixed mandrel and remove the fixed mandrel, and to perform leveling and trimming on crack portions and shape defect portions in width end portions of a plate that have been generated by multi-pass rolling so as to manufacture a high-quality product coil.
摘要:
The present invention relates to a hot rolling apparatus for manufacturing a metal plate by hot-rolling-treating a metal material including copper. The apparatus includes: a rough rolling device for rolling-treating the metal material, which has been heating-treated, a plurality of times with a back-and-forth movement of the metal material, to mold the metal material into a metal plate; a heat retention/application treatment device for retaining heat of or applying heat to the metal plate molded by the rough rolling device at lower temperatures than in the heating treatment, without applying bending; a finish rolling device for further rolling-treating the metal plate that has been heat-treated by the heat retention/application treatment device; a cooling device for cooling the metal plate that has been rolling-treated by the finish rolling device; and a support table for movably supporting the metal plate from below before and after the rough rolling device while the metal material is moved back and forth by the rough rolling device. According to the present invention, it is possible to improve the quality of the metal plate manufactured in the hot rolling apparatus, and also to improve the speed of the process required for rolling.
摘要:
A material 1A to be formed, which is uncoiled by an uncoiler 40 from a coil 1B while controlled against meandering, is adjusted in inclination angle by an approach angle adjuster 50 and guided into a separator-forming mill 60. The material to be formed is introduced and pressurized between rolls in the mill 60 so as to continuously form a separator 1. The separator 1 formed by the mill 60 is discharged and tension controlled by a pinch roll device 70 with opposite widthwise ends of the separator being pinched. The separator 1 discharged by the pinch roll device is cut without stopping the same by a flying shear 80 at portions with no passages formed.
摘要:
A continuous hammering device for continuous casting includes a hammering member 22 for hammering a cast 1, a compression spring 30 which pushes the hammering member toward the cast, a cam mechanism 32 which compresses the compression spring by moving the hammering member away from the cast and then allows the hammering member to freely move, and a main body 14 which supports the hammering member, the compression spring, and the cam mechanism. At the time of hammering, the cam mechanism 32 leaves the hammering member 22 to allow the hammering member to freely accelerate so as to convert compression energy of the compression spring 30 into kinetic energy of the hammering member 22, and the hammering member 22 collides with the cast 1, thereby applying predetermined hammering energy to the cast.
摘要:
In a magnesium alloy hot rolling apparatus (100) in which winders (1, 2) that are able to apply heat to and then maintain the temperature of a magnesium alloy sheet (S) while this sheet is in a coiled state are installed on both entry and exit sides of a rolling mill (3), and in which the magnesium alloy sheet undergoes a sequential thickness reduction via a plurality of reverse rollings, the rolling mill (3) is provided with working rollers (3a) and back-up rollers (3b) 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.