RU1784318C - Method of feeding hot slabs to scale breaker of wide-strip rolling mill - Google Patents

Abstract

SUMMARY OF THE INVENTION: If, at the same time, they are pulled out of all furnaces onto a roller conveyor and fed into the temperature control zones by simultaneous translational movement of all slabs. After the first slab is submitted for rolling, all the remaining slabs are simultaneously progressively moved to the next temperature control zone; and a slab from a furnace or from a sling is fed into the freed temperature zone. Those in the thermostatic zones would move back and forth along the length of the zone. 1 C.p. f-ls, 1 ill.

Description

The invention relates to the field of rolling production and can be used for transporting hot slabs directly (in transit) from sling or continuous casting machine to a receiving roller table of a broadband mill.

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The purpose of the invention is to reduce heat loss of slabs.

This goal is achieved by the fact that by the method of supplying hot slabs to a broadband mill, which includes dispensing several slabs from the furnaces to the rolling table, placing them one in each of the zones of thermostat ovan located on the rolling table in between the furnaces, and transmitting of subsequent slabs from sling to the mill during direct rolling, feeding slabs that are not on the rolling table to adjacent temperature control zones is carried out by simultaneous translational movement of all slabs. In order to protect the roller conveyor rollers from overheating in thermostatting zones, the reciprocating one and the other must be moved.

The drawing shows a diagram of a section for feeding slabs from sling to a broadband mill during direct rolling and the following notation is accepted: 1 - stand of sling; 2 - sling scissors; 3 - splinter device; 4 - would; 5 - heating furnaces; 6 - sections of the rolling table in which slab movement is provided in the translational motion mode (the direction of movement is indicated by an arrow); 7 - sections of the roller table (temperature control zones) in which slab movement is provided in the reciprocating motion mode (the direction of movement is indicated by arrows); 8 - rough descaling (first stand) broadband mill.

If all of the furnaces stand out on the roller table at the same time and are located on the sections of the roller table free of thermostatic devices (sections 6 in the drawing). In the next moment in time everything

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In the case of simultaneous translational movement, they move to sections of the roller table in the spaces between furnaces that are equipped with thermostatic devices 7. From the first counter-rolling rolling of the thermostatic device located in front of the draft descaler, the slab goes to rolling, and the slab located under the second and subsequent thermostatic devices, perform under these devices reciprocating movement along the length of the zone, protecting the rollers of the roller table and their bearing bearings from overheating.

When the first anti-rolling device is released from the slab, the next slab is emitted from the first furnace, it is located under the first thermostatic device and also starts to reciprocate under it. After the slab arrives for rolling from the first thermostatic device, the next slab is delivered from the second furnace to the roller conveyor section between the second and third thermostatic devices, and the slab located under the second thermostatic device progressively moves to the roller conveyor section between the first and second thermostatic devices. and then simultaneously these slabs are moved under the second and first thermostatic devices, respectively. After the next slab arrives for rolling from the first thermostatic device, the next slab will be delivered from the third furnace to the roller conveyor section between the third and fourth thermostatic devices. Likewise, they are dispensed from the furnaces and transported the remaining slabs in a batch. With this method of transportation, a heated slab is always located under each conveying device. Between these plates and the operating elements of thermostatic devices, a state of thermal equilibrium is established, which practically eliminates the heat loss of the layer during the period when it is under the thermostatic device. Losses of heat occur only during the transportation to the parts of the roller table free of thermostatically controlled devices.

After heating to a state of thermal equilibrium with the use of working elements, thermostatic devices should be

from furnaces or immediately after rolling on sling and placed sequentially under thermostatic devices, starting from the first against rolling. For example, from the first two slabs intended for direct rolling, the first slab directly goes for rolling into the rough descaler, and the second slab is located under

the first thermostatic device and is waiting in line for rolling, making a reciprocating motion. When this slab arrives for rolling into the rough descaler of the mill, the third and fourth slabs are received from the sling, which are located under the first and second thermostatic devices. When the third slb comes in for rolling into the rough descaler, and the fourth

the slab from the zone of the second thermostatic device will move to the zone of the first thermostatic device, the fifth and sixth cases coming from the sling are placed in the zones of the second and third thermostatic devices, respectively. This method of supplying hot slabs for rolling allows to significantly reduce the heat loss of the slabs and thereby improve the temperature conditions of the rolls

broadband mill during direct rolling, as well as increase the volume of direct rolling and provide the possibility of direct rolling with short delays on the broadband mill.

Claims (2)

The claims 1, A method for supplying hot slabs to a sintering machine of a broadband rolling mill, including issuing several slabs from the soil to the rolling table, placing them one by one in each of the thermostatic zones located on the rolling table in between the furnaces, and transferring the slabs from sling to the mill during direct rolling, characterized in that, in order to improve the heat loss of the slabs during the delivery of the entire batch from the furnaces, the feed is carried out by the simultaneous translational movement of all the slabs located on a live roll to adjacent thermostatic zones, 2. The method according to claim 1, characterized in that, in order to protect the rollers the live rolls from overheating, in the thermostatic zones they should be moved back and forth along the length of the zone. Ch 7