摘要:
A rolling mill shape control apparatus for a flat material comprises a thermal crown calculator which calculates a thermal crown magnitude in a widthwise direction of rolls as based on rolling history information after a change in vertical spacing of the rolls, a roll wear calculator which calculates a wear magnitude of the rolls as based on rolling history information after the rearrangement of the rolls, an optimum rolling temperature distribution calculator which calculates an optimum rolling temperature distribution in a widthwise direction of the flat material on the basis of the calculated results of both the thermal crown calculator and the roll wear calculator and a reference bending force corresponding to maximum bending correction, a thermometer which detects a widthwise temperature distribution of the flat material, a heating/cooling device which can separately heat/cool a plurality of parts of the flat material divided in the widthwise direction thereof, and a heating/cooling controller which compares an optimum rolling temperature distribution signal and a temperature distribution signal so as to control the heating/cooling device between the signals.
摘要:
A method of and apparatus for continuously quenching a steel plate with cooling water, by passing the steel plate through a water storage vessel containing the cooling water. The cooling water for cooling the upper side of the steel plate is introduced into the upper section of the water storage vessel from an upper portion of the latter and is exhausted from an upper portion of the same through, for example, overflow. The cooling water for cooling the lower side of the steel plate is introduced into the lower section of the water storage vessel from a lower portion of the latter and exhausted from a lower portion of the same. The cooling water is agitated and moved by impellers disposed in the upper and lower sections of the storage vessel in the direction of movement of the steel plate or in the direction opposite to the direction of movement of the steel plate which is clamped and fed linearly through the water storage vessel by means of upper and lower rolls. The water for cooling the upper side of the steel plate is circulated only through the upper section of the water storage vessel while the water for cooling the lower side of the steel plate is circulated only through the lower section of the water storage vessel.
摘要:
Apparatus for cooling sheet metal panels has an elongated channel bounded by two side walls, a longitudinally slotted top wall and a longitudinally slotted bottom wall. These walls are immersed in a liquid containing vessel and the latter contains sets of horizontal driven shafts above the top wall and below the bottom wall. The shafts carry disc-shaped transporting members, portions of which extend through the slots of the top and bottom walls to engage a panel which is introduced into the channel and to transport the panel toward the outlet of the channel. The top wall and the shafts above the top wall are movable up and down to provide room for panels of different thicknesses. Two nozzles discharge water into the inlet of the channel at a level above as well as at a level below the panel between the upper and lower transporting members.
摘要:
The device is intended to facilitate the changing of the sealing element and to increase the life of this element. The device comprises an added bar which is detachably fixed to a wall of the machine and received in a slot in this wall. The bar carries a deformable hollow body which is connected to a source of fluid under pressure and carries the sealing element.
摘要:
The device enables the machine to undergo without damage the passage of deformed metal sheets or metal sheets whose thickness exceeds the gap between the rollers of the machine. For this purpose, the upper rollers carried by an upper frame of the machine are mounted in bearings which are supported elastically by means of spacer blocks. Sealing elements operating under conditions particular to each sealing element are provided. The main application of this device is in machines for effecting an accelerated cooling or hardening of metal sheets.
摘要:
The machine is designed mainly to effect an accelerated cooling of metal sheets and is improved in order to permit efficient operation with sheets of variable width. For this purpose, sets of elements forming baffles are disposed on each side of the longitudinal axis of the machine along edges of the latter. Depending on whether they are withdrawn into or not withdrawn into their housings, these elements modify the conditions of the flow of the cooling liquid in the machine.
摘要:
A cooling system for cooling steel slabs or the like comprises an elongated tank with parallel rollers for conveying the heated slab horizontally beneath the surface of a water bath. Water curtains from angularly directed upper and lower nozzles seal the entry opening in the end of the tank through which the slab is introduced into the tank and also supply cooling water to the tank. The rollers have axially spaced disk portions for supporting the slab in spaced relation above guide plates or aprons extending between the rollers. Inlet cooling water from the lower water curtain impinges against the lower surface of the slab and is diverted into and flows at high velocity through the restricted cooling channel defined between the guide plates or aprons and the underside of the slab. In a continuous form of the cooling system, a water curtain sealed outlet opening for the slabs is also provided in the opposite end of the tank. Intermediate cooling water nozzles may also be provided between the ends of the tank.
摘要:
An apparatus for continuously quenching a heated metal plate moving and restrained in a plane. A pair of quench headers are positioned above and below the plate each having a slot through which quench fluid is directed at an angle in the direction of plate movement. Beyond the impingement of the quench fluid on the plate are a pair of sral grooved rollers positioned and spaced apart engaging the top and bottom surfaces of the metal plate.