CN101646508B - Hot rolling equipment and method for manufacturing steel product using the hot rolling equipment - Google Patents
Hot rolling equipment and method for manufacturing steel product using the hot rolling equipment Download PDFInfo
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- CN101646508B CN101646508B CN2007800520964A CN200780052096A CN101646508B CN 101646508 B CN101646508 B CN 101646508B CN 2007800520964 A CN2007800520964 A CN 2007800520964A CN 200780052096 A CN200780052096 A CN 200780052096A CN 101646508 B CN101646508 B CN 101646508B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/34—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
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- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
This invention provides a holding apparatus for lifting a rolling material on a transfer table to a height enough to allow a succeeding rolling material to pass through on the table, for example, for conducting passing rolling, in a hot rolling equipment, which apparatus can be installed without the need to ensure a wide space and can properly lift a rolling material. A steel product (10) is lifted while holding between both sides of the transfer table by a holding part (33a) in a plurality of sets of holding arms (33) mounted on frames (31, 32) which are lowered or lifted along four braces (21) provided on both sides of the transfer table (10). In the holding apparatus provided with the holding arm, the holding part in the holding arm has a proper heat insulating structure. There are also provided a hot rolling equipment, which, even when a controlled rolling material for which waiting time for cooling is necessary is included, the idle time in a hot rolling machine can be reduced to improve the rolling efficiency, and a hot rolling method using the hot rolling equipment.
Description
Technical field
The present invention relates to equipment of hot rolling and use the manufacturing approach of the steel of this equipment of hot rolling.
Background technology
For example in the heavy plate rolling of steel, through implementing controlled rolling (Controlled Rolling; CR) make the good steel of material.
At this moment; Under the situation that temperature when carrying out controlled rolling (controlled rolling begins temperature) is low and thickness of slab (controlled rolling begins thickness of slab) when carrying out controlled rolling is thick; Rolling stock becomes controlled rolling and begins to need considerable time till the temperature, rolling stock is waited for begun temperature to becoming controlled rolling.Its result is because this cooling waits for that on hot-rolling mill, can produce free time, generation hinders problems such as rolling efficiency.
Because waiting for, this cooling on hot-rolling mill, produces the obstruction of the rolling efficiency that free time brings in order to prevent; For example; In patent documentation 1; Disclose a kind of apparatus ' of standby (holding device) with rolling stock of lowering or hoisting gear, this lowering or hoisting gear has the high temperature rolling material on the rollgang is raised to the one-sided formula fork shape mechanical arm that height that follow-up rolling stock can pass through keeps holding state on the rollgang of the finishing mill entrance side of equipment of hot rolling.
Fig. 9 representes the apparatus ' of standby of the rolling stock that above-mentioned patent documentation 1 is put down in writing.Rolling stocks to be cooled such as need are sent on the roller roller R of pipeline, at S
1State under stop.Afterwards, through lowering or hoisting gear 91 driven wheel drive motors 95, rolling stock is carried on one-sided formula fork shape mechanical arm 92, with the S of lifting
2State carries out standby.Thus, even rolling stocks to be cooled such as needs have stand-by time, the rolling stock that follow-up rolling stock also can be crossed in the standby is rolled, thereby can not hinder rolling efficiency.
And; A kind of transfer device is disclosed in patent documentation 2; This transfer device is on the rollgang of the roughing mill entrance side of equipment of hot rolling; Be provided with the adjustment band that is used to regulate the rolling stock temperature, have the high temperature rolling material on the lifting rollgang and the liftable suspension bracket that between roughing mill and adjustment band, back and forth drives.
Patent documentation 1: japanese kokai publication hei 4-274814 communique
Patent documentation 2: japanese kokai publication hei 8-323404 communique
Summary of the invention
But; The apparatus ' of standby (holding device) of the rolling stock that above-mentioned patent documentation 1 is put down in writing; Rolling stock is carried on one-sided formula fork shape mechanical arm, carry out lifting; Therefore need will support this one-sided formula fork shape mechanical arm and make the lowering or hoisting gear of its up-down process firm structure, needs will be used to be provided with this lowering or hoisting gear wide be provided with the space be located at rollgang near.Therefore, under near can not guarantee the rollgang the wide situation that the space is set, can not use the overtaking rolling device that above-mentioned patent documentation 1 is put down in writing.
And; In the transfer device of the rolling stock that above-mentioned patent documentation 2 is put down in writing, come the lifting rolling stock through suspension bracket, the part that therefore can only keep rolling stock; The rolling stock that, high temperature low for rigidity and thickness of slab are thin; Especially under the situation that area is big, maintaining part is littler than the area of rolling stock, so rolling stock possibly produce big distortion, disrumpent feelings and can not carry out lifting.
The present invention In view of the foregoing proposes; Its purpose is to provide a kind of holding device and the equipment of hot rolling with this holding device of rolling stock; As in the equipment of hot rolling of heavy plate rolling equipment etc.; In order to carry out the rolling grade of overtaking the rolling stock on the rollgang is lifted to the height that follow-up rolling stock can pass through and employed holding device when keeping, also can be provided with even without wide space, and suitably the lifting rolling stock keeps.
And, when using the holding device of aforesaid steel, need and will be set to heat resistant structure in the part (maintaining part) that upper surface carries the high temperature steel.At this moment; Set structure preferably not only can at high temperature be protected maintaining part; And can avoid owing on steel, produce local cooling (inhomogeneous cooling, temperature uneven) with contacting of maintaining part, can withstand the shock loading of moment etc. of lifting steel.
Generally; Heat resistant structure as the position that contacts with the high temperature steel; Can use the high heat resisting steel of elevated temperature strength to wait to reduce contact area (sliding button of heating furnace step rate, heating furnace extractor etc.) with steel; Or use structure that heat-insulating materials such as brick are installed with the state that exposes etc., but when this heat insulating construction adopted, there is following shortcoming in above-mentioned maintaining part.
At first, using under the situation of heat resisting steel etc., though can reduce the contact area with steel to a certain degree, can not fundamentally deal with problems, the temperature inequality still exists.And prices such as heat resisting steel are expensive, therefore cause equipment cost to improve, and can not get desired effects for the temperature inequality.
And when using the structure that heat-insulating materials such as brick are installed with the state that exposes, because the shock loading of the moment of lifting steel etc., heat-insulating material is damaged, thereby can drop on the pipeline.
The present invention In view of the foregoing proposes; It is a kind of in equipment of hot rolling such as heavy plate rolling equipment that its purpose is to provide, and employed during the lifting high temperature metallic material, maintaining part that carry high temperature metallic material has the keeping arm and the holding device of suitable heat insulating construction.
And in above-mentioned patent documentation 1, it is rolling to have hinted that the use apparatus ' of standby can carry out overtaking; But not open, under the situation that contains needs wait Cooling Control rolling stock, how to be rolled; Could reduce the free time of hot-rolling mill, improve rolling efficiency.
For example, when the apparatus ' of standby that uses patent documentation 1 to be put down in writing,, make after follow-up rolling stock passes through, be difficult to make the controlled rolling material of standby to proceed rolling in the suitable time according to its original state.That is, with controlled rolling material use apparatus ' of standby in standby under the as air-cooled condition during the temperature that reaches regulation, often be difficult to be ready to the rolling stock of overtaking, thereby hot-rolling mill frequently takes place become idle state.Therefore, cause output hourly to descend.
The present invention In view of the foregoing proposes; Even its purpose is to provide containing needs and waits under the situation of Cooling Control rolling stock, also can reduce hot-rolling mill free time, improve the equipment of hot rolling of rolling efficiency and use the manufacturing approach of the steel of this equipment of hot rolling.
In order to address the above problem, the present invention has following characteristic.
A kind of holding device of rolling stock, be used for equipment of hot rolling with rolling stock from the rollgang to above lifting and keeping, it is characterized in that having:
Crane liftably is configured in the top of rollgang; With
A plurality of keeping arms are located on the said crane in order to keep rolling stock in the rollgang both sides,
This keeping arm has maintaining part, and this maintaining part can fasten with the lower surface of rolling stock through the rising of crane.
Holding device like above-mentioned [1] described rolling stock is characterized in that crane is liftably supported by the supporter that is arranged on the rollgang both sides.
Holding device like above-mentioned [1] described rolling stock is characterized in that, crane is liftably kept by the stand that is arranged on the rollgang top.
Holding device like each described rolling stock in above-mentioned [1] to [3] is characterized in that keeping arm has: dip portion, and sagging downwards from crane; And maintaining part, extend to rollgang width center direction from the lower end of this dip portion.
A kind of equipment of hot rolling has: hot-rolling mill; Rollgang is by being used for that rolling stock is transported to a plurality of roller rollers on this hot-rolling mill and the baffle plate that is arranged in the gap between each roller roller constitutes; And holding device,, it is characterized in that rolling stock lifting and keeping from the said rollgang at the upstream side of said hot-rolling mill,
As holding device, each described holding device in the claim 1～4 is set,
The maintaining part of the keeping arm of this holding device is configured in the gap between the roller roller, and in the gap between the roller roller the part of going up and down except that maintaining part, is provided with baffle plate.
A kind of manufacturing approach of metal material is used above-mentioned [5] described equipment of hot rolling, it is characterized in that; After with said hot-rolling mill metal material being rolled into the thickness of regulation; Utilize said holding device to make this metal material standby, with the follow-up metal material of said hot mill rolling, on the other hand in the place that follow-up metal material can pass through; Metal material in the standby is turned back on the rollgang, follow said follow-up metal material and continue to be rolled with said hot-rolling mill.
A kind of keeping arm of metal material uses when the lifting high temperature metallic material, it is characterized in that, is provided with the maintaining part of carrying metal material, and this maintaining part has: the maintaining part body; First heat-insulating material covers the side that contacts with metal material at least of this maintaining part body; And cover, cover said first heat-insulating material, and contact with metal material.
Keeping arm like above-mentioned [7] described metal material is characterized in that, the said cover that contacts with metal material is metal cover.
Keeping arm like above-mentioned [7] described metal material is characterized in that, the said cover that contacts with metal material has: metal cover covers first heat-insulating material; With second heat-insulating material, be installed in the upper surface of this metal cover, have the elasticity that contacts with metal material.
Keeping arm like each described metal material in above-mentioned [7] to [9] is characterized in that keeping arm has: dip portion, and sagging downwards; And maintaining part, extend to horizontal direction from the lower end of this dip portion.
A kind of holding device of metal material also keeps metal material to the top lifting from rollgang, it is characterized in that having:
Crane liftably is configured in the top of rollgang; With
Each described a plurality of keeping arms in above-mentioned 7 to 10 are located on the said crane in order to keep metal material in the rollgang both sides,
The maintaining part of this keeping arm raises the lower surface of metal material through the rising of crane.
A kind of equipment of hot rolling is characterized in that, is provided with claim above-mentioned 11 described holding devices in the upstream side or the downstream of hot-rolling mill.
A kind of manufacturing approach of metal material is used above-mentioned [12] described equipment of hot rolling, it is characterized in that; After with said hot-rolling mill metal material being rolled into the thickness of regulation; Utilize said holding device to make this metal material standby, with the follow-up metal material of said hot mill rolling, on the other hand in the place that follow-up metal material can pass through; Metal material in the standby is turned back on the rollgang, follow said follow-up metal material and continue to be rolled with said hot-rolling mill.
A kind of equipment of hot rolling is characterized in that, is provided with apparatus ' of standby at the upstream side of reversible hot rolling mill, is used to make the rolling stock standby can be from the place that rollgang passes through at follow-up rolling stock; Downstream at reversible hot rolling mill is provided with cooling device, is used for the cold rolling material.
A kind of hot-rolling method; Use above-mentioned [14] described equipment of hot rolling, it is characterized in that, with said reversible hot rolling mill with first billet rolling after stipulate thickness of slab; But be cooled to the temperature of controlled rolling through said cooling device; And in this cooling procedure, utilize said reversible hot rolling mill with second billet rolling to regulation thickness of slab, rolling after, but keep and be cooled to the temperature of controlled rolling through said apparatus ' of standby; And said first steel billet sent back to be rolled into the finish rolling thickness of slab on the said reversible hot rolling mill; And then the 3rd steel billet delivered to be rolling to the finish rolling thickness of slab on the said reversible hot rolling mill, after the rolling end, said second steel billet delivered to be rolling to the finish rolling thickness of slab on the said reversible hot rolling mill.
A kind of equipment of hot rolling is characterized in that, be provided with at the upstream side of hot-rolling mill: cooling device is used for the cold rolling material; And apparatus ' of standby, be used to make the rolling stock standby can be from the place that rollgang passes through at follow-up rolling stock.
Like above-mentioned [16] described equipment of hot rolling, it is characterized in that said apparatus ' of standby is the device that rolling stock is made it standby from the rollgang to the top lifting.
A kind of manufacturing approach of steel; Use above-mentioned [16] or [17] described equipment of hot rolling, it is characterized in that, behind the thickness of slab of said hot-rolling mill steel rolling one-tenth regulation; Utilize said apparatus ' of standby to make this steel standby in place that follow-up steel can pass through; With the follow-up steel of said hot mill rolling, on the other hand, the steel in the standby are turned back on the rollgang; After the temperature that is transported to said cooling device and is cooled to stipulate, follow said follow-up steel and continue to carry out finish rolling with said hot-rolling mill.
A kind of equipment of hot rolling; It is characterized in that; Upstream side at reversible hot rolling mill is provided with first cooling device and apparatus ' of standby, and said first cooling device is used for the cold rolling material, and said apparatus ' of standby makes the rolling stock standby can be from the place that rollgang passes through at follow-up rolling stock; Have second cooling device in the downstream of reversible hot rolling mill, be used for the cold rolling material.
Like above-mentioned [19] described equipment of hot rolling, it is characterized in that, on said first cooling device, said apparatus ' of standby and said second cooling device, be respectively equipped with the thermometer of the temperature of measuring rolling stock.
A kind of hot-rolling method; Use above-mentioned [19] or [20] described equipment of hot rolling, it is characterized in that, with said reversible hot rolling mill with first billet rolling after stipulate thickness of slab; Make the first steel billet standby can be from the place that rollgang passes through through said apparatus ' of standby at follow-up rolling stock; Second steel billet delivered on the said reversible hot rolling mill be rolled, and make and utilize first steel billet of apparatus ' of standby standby to turn back on the rollgang, deliver to the temperature that is cooled to regulation on said first cooling device; Then; Second steel billet is rolling to the regulation thickness of slab and is transported to the downstream by reversible hot rolling mill, simultaneously first steel billet is delivered to said second cooling device, but utilizes but device for cooling first steel billet to be cooled to the temperature of controlled rolling; On the other hand; With the 3rd steel billet deliver to be rolling to the regulation thickness of slab on the said reversible hot rolling mill after, the 3rd steel billet is transported to upstream side, but and first steel billet that will utilize second cooling device to be cooled to the temperature of controlled rolling deliver to and be rolling to the finish rolling thickness of slab on the said reversible hot rolling mill.
In the present invention; Through being arranged on a plurality of keeping arms on the crane that liftably is configured in the rollgang top; The lower surface and the lifting rolling stock that keep rolling stock in the both sides (both sides of plate width direction) of rollgang; Even therefore near rollgang, do not have wide space can be provided with yet, even and be the rolling stock that high temperature and thickness of slab approach, area is big, also suitably lifting and maintenance.
In the present invention; The maintaining part of keeping arm has first heat-insulating material and the cover that covers first heat-insulating material and contact with metal material of a side that contacts with metal material that covers the maintaining part body; Therefore can at high temperature protect the maintaining part body through the insulation effect of first heat-insulating material; And can suppress the generation of the inhomogeneous cooling of metal material, can stop shock loading through cover simultaneously.
And,, can make stable metal materials such as form accuracy, material expeditiously if will have the manufacturing that the holding device of the keeping arm of this structure is arranged on the enterprising row metal material of equipment of hot rolling of metal material.
In the present invention; Containing needs waits under the situation of Cooling Control rolling stock; Can the cooling through cooling device suitably be made up with the overtaking of using apparatus ' of standby is rolling; Therefore can reduce the free time of hot-rolling mill, thereby can increase the radical of rolling rolling stock, improve rolling efficiency.
In the present invention; The rolling finish time of corresponding follow-up rolling stock; Can the rolling stock in the standby (controlled rolling material) be cooled to the temperature stipulated constantly in regulation through cooling device, so hot-rolling mill can not have idly rolling stock is rolled, improve rolling efficiency.
In the present invention; Containing needs waits under the situation of Cooling Control rolling stock; Can the cooling through first, second cooling device suitably be made up with the overtaking of using apparatus ' of standby is rolling; Therefore can reduce the free time of hot-rolling mill, thereby can increase the radical of rolling rolling stock, improve rolling efficiency.
Description of drawings
Fig. 1 is the front view of the holding device of the related steel of an embodiment of the invention.
Fig. 2 is the side view of the holding device of the related steel of an embodiment of the invention.
Fig. 3 is the figure (vertical view) of the A-A direction of arrow among Fig. 2.
Fig. 4 is the figure (vertical view) of the B-B direction of arrow among Fig. 2.
Fig. 5 is the front view of user mode of the holding device of the related steel of an embodiment of the invention.
Fig. 6 is the key diagram about the size of the holding device of the related steel of an embodiment of the invention.
Fig. 7 is the rolling key diagram of overtaking of the holding device of use steel.
Fig. 8 is the front view of the holding device of the related steel of other embodiments of the present invention.
Fig. 9 is the key diagram of prior art.
Figure 10 A is the part enlarged front view of the keeping arm of the steel in an embodiment of the invention.
Figure 10 B is the part amplification plan view of the keeping arm of the steel in an embodiment of the invention.
Figure 11 is the figure (figure of the A-A direction of arrow of Figure 10 A) of the heat insulating construction in expression an embodiment of the invention.
Figure 12 is the figure of the heat insulating construction in other embodiments of the present invention.
Figure 13 A is the front view of overall structure figure of the holding device of the related steel of an embodiment of the invention.
Figure 13 B is the side view of overall structure figure of the holding device of the related steel of an embodiment of the invention.
Figure 14 is the figure of layout with the step of the hot-rolling method that uses this equipment of hot rolling of the related equipment of hot rolling of expression an embodiment of the invention.
Figure 15 is the figure of layout with the steel step of manufacturing of using this equipment of hot rolling of the related equipment of hot rolling of an expression embodiment of the present invention.
Figure 16 is the figure of layout with the step of the hot-rolling method that uses this equipment of hot rolling of the related equipment of hot rolling of expression an embodiment of the invention.
The implication of numbering among the figure is following.
The holding device of 1 steel; The holding device of 2 steel; 5 hot-rolling mills; 10 steel; The 10a material of going ahead of the rest; Row material behind the 10b; 11 rollgangs; 12 roller rollers; 13 baffle plates; 14 baffle plates; 21 pillars; 22 electronic cylinders; 23 motors; 24 rotation transmitter shafts; 25 stands; 26 hydraulic cylinders; 31 crossbearers; 32 perpendicular framves; 33 keeping arms; The 33a maintaining part; The 33b dip portion; 39 maintaining part bodies; 40 heat insulating construction portions; 41 heat insulating construction portions; 45 steel covers; 46 first heat-insulating materials; 47 second heat-insulating materials; 48 projections; 51 heating furnaces; 52 holding devices; 53 reversible hot rolling mills; 54 water cooling plants; 55 thermometers; 56 thermometers; 57 back water cooling plants; 58 thermometers
The specific embodiment
With reference to accompanying drawing an embodiment of the invention are described.In addition, be that the situation of steel is discussed as an example here with rolling stock.
Fig. 1 to Fig. 4 representes the holding device of the steel that an embodiment of the invention are related.Fig. 1 is a front view, and Fig. 2 is a side view, and Fig. 3 is the figure (vertical view) of the A-A direction of arrow of Fig. 2, and Fig. 4 is the figure (vertical view) of the B-B direction of arrow of Fig. 2.
Extremely shown in Figure 4 like Fig. 1; The holding device 1 of the steel that this embodiment is related; It is the holding device that in equipment of hot rolling such as heavy plate rolling equipment, the steel 10 on the rollgang (roller-way) 11 is moved to the steel that can make position that follow-up steel pass through and keep with holding state; It comprises: four pillars (supporter) 21 are located at the both sides of rollgang 11; Two crossbearers 31 respectively by the support of two pillars 21, and go up and down along pillar 21; Perpendicular frame 32 is crossed on two crossbearers 31; With keeping many groups of (being ten groups here) 33, two of keeping arms of steel 10 in the both sides of rollgang 11 is one group, is installed in relative to one another on the perpendicular frame 32 with respect to throughput direction.This keeping arm 33 has from sagging dip portion 33b of perpendicular frame 32 and the maintaining part 33a that extends to the width center direction of rollgang 11 from the lower end of dip portion 33b; Maintaining part 33a fastens (raising the lower surface of steel 10) through the rising of crane (crossbearer 31, perpendicular frame 32) and the lower surface of steel 10.
Afterwards, go up and down along pillar 21, four electronic cylinders 22 are set near four pillars 21 respectively, between per two electronic cylinders 22, a motor 23 is set respectively in order to make crossbearer 31.The rotary power of motor 23 passes to electronic cylinder 22 through rotation transmitter shaft 24, so that 22 actions of electronic cylinder.
And the maintaining part 33a of keeping arm 33 is configured in the gap between the adjacent roller roller 12, can be positioned at the lower face of rollgang 11 through descending, and can be positioned at the surface of rollgang 11 through rising.
In addition; For the front end that prevents reclinate steel falls into the gap between roller roller 12 and the roller roller 12; Gap between roller roller 12 is provided with baffle plate 13; In the roller roller 12 of the maintaining part 33a that disposes keeping arm 33 and the gap of roller roller 12, (that is, near the width central portion of rollgang 11) also is provided with baffle plate 14 between the maintaining part 33a of relative keeping arm 33.The front end that thus, can prevent steel falls into the gap between the roller roller 12.
By the way, in the overtaking rolling device that above-mentioned patent documentation 1 is put down in writing, because one-sided formula fork shape mechanical arm is inserted the gap between the roller roller, thereby between this roller roller, baffle plate can not be set, bring obstacle therefore possibly for the conveying of steel.
And; Holding device 1 like the related steel of this embodiment of above-mentioned formation; When carrying out the rolling grade of overtaking, as shown in Figure 5, make electronic cylinder 22 actions; Steel 10 are carried on the maintaining part 33a of keeping arm 33, lifting also remains on the height that follow-up steel are passed through from roller roller 12.
In addition; Size for maintaining part 33a and baffle plate 14; The width setup of baffle plate 14 gets and can prevent that steel from falling into the gap between the roller roller 12, even and do not move keeping arm 33 at the steel width, total maintaining part 33a also can keep as the wide steel of the plate of its object.
For example; As shown in Figure 6, will be made as under the situation of 1000mm to 5500mm as the wide W of plate of the steel of object, the width Le of baffle plate 14 is made as 500mm; Interval S between baffle plate 14 and the maintaining part 33a front end is made as 100mm, and the length L h of maintaining part 33a is made as 2500mm.Therefore thus, the front end spacing (Le+2S) of maintaining part 33a becomes 700mm, can be that the steel of 1000mm keep with each side 150mm ground with minimum widith through maintaining part 33a.Therefore and the root spacing (Le+2S+2Lb) of maintaining part 33a becomes 5700mm, can be that the steel former state ground of 5500mm keeps with maintaining part 33a with Breadth Maximum also.
And; Fig. 7 representes to use steel holding device 1 to carry out the ideograph of the rolling state of overtaking; For example; The material 10a in advance that needs such as strong CR material etc. are to be cooled is through holding device 1 lifting and keeping from the roller roller 12, material 10a in advance etc. to be cooled during, utilize hot-rolling mill 5 rolling As--Rolled materials, weak CR material etc. back capable material 10b to be cooled such as to need not.Can avoid hot-rolling mill 5 thus since etc. to be cooled and producing free time.
So; The holding device 1 of the steel that this embodiment is related; When carrying out the rolling grade of overtaking; Maintaining part 33a through ten groups of retainers 33 of setting on the frame 31,32 that goes up and down along four pillars that are arranged on rollgang 11 both sides 21; Therefore the lifting of steel 10 is carried out in the both sides (both sides of plate width direction) that the lower surface of steel 10 remained on rollgang 11, even do not have wide space also can be provided with near the rollgang 11, even and also suitably lifting and keeping of high temperature, thickness of slab is thin, area is big steel.
In addition, be provided with the equipment of hot rolling of the holding device 1 of the related steel of this embodiment, can not produce by cooling and wait for that the free time ground that causes carries out the rolling of steel, thereby can improve rolling efficiency.
And; In this embodiment, be that one group of relative throughput direction is installed relative to one another with keeping arm 33 with two, but be not limited thereto; As long as can keep steel 10 in the both sides of rollgang 11, on one side also can holding member 33 be installed one along throughput direction.For example, can be with installing along the throughput direction ground (staggered ground) that staggers each other towards different keeping arm 33.By the way, at this moment, the maintaining part 33a with keeping arm 33 is configured in the gap between the adjacent roller roller 12 equally, and the gap between the roller roller 12 the residing up-down part except that maintaining part 33a is provided with baffle plate 14.And, preferably, the width central portion that this baffle plate 14 comprises rollgang 11 at least is set.
Then, Fig. 8 representes other embodiments of the present invention.In the holding device 1 of above-mentioned steel; With four electronic cylinders 22 be separately positioned on four pillars 21 near, make crossbearer 31 rise or descend through electronic cylinder 22, with respect to this along pillar 21; In the holding device 2 of the related steel of this embodiment; Between the upper end of two pillars 21 of configuration stand 25 is set relatively clamping rollgang 11, hydraulic cylinder 26 is installed on this stand 25, make crossbearer 31 under the guiding of pillar 21, sling or fall through hydraulic cylinder 26.Can make holding device compacter thus.
And,, stand 2 is set here above rollgang 11, but be not limited thereto through the support that utilizes pillar 21, stand 25 also can be set above rollgang 11, make crossbearer 31 sling or fall from this stand 25.For example, also can utilize the beam on building top that stand 25 is set.
And,, being that the situation of steel is illustrated as an example with rolling stock, but the invention is not restricted to this here, can be applied to also comprise that rolling stock is the metal material of the situation of non-ferrous metal materials such as aluminium.
According to description of drawings an embodiment of the invention.And, here, be that the situation of the steel after rolling describes as an example with high temperature metallic material.And the temperature of heated metal material when the high temperature degree is meant hot-rolled metal material under the situation of the heavy plate rolling of steel, is the temperature about 50 ℃ to 1200 ℃.
At first, Figure 12 representes the overall structure of the holding device of the steel in the embodiment of the present invention.Figure 13 A is a front view, and Figure 13 B is a side view.
Shown in Figure 13 A, Figure 13 B; The holding device 1 of the steel that this embodiment is related; Be in the equipment of hot rolling such as heavy plate rolling equipment; For the rolling grade of overtaking the high temperature steel 10 on the rollgang (roller-way) 11 are lifted to the device that height that follow-up steel can pass through keeps, have: pillar 21 relatively is located at the both sides of rollgang 11; Crossbearer 31 is supported by two relative pillars 21, and goes up and down along pillar 21; Perpendicular frame 32 is installed on the crossbearer 31, extends to throughput direction; With keeping many groups of (being ten groups here) 33, two of keeping arms of steel 10 in the both sides of rollgang 11 is one group, and the throughput direction direction is installed on the perpendicular frame 32 relative to one another relatively.And, go up and down along pillar 21 in order to make crossbearer 31, electronic cylinder 22 is set respectively near each pillar 21 and moves with motor 23.
And keeping arm 33 has from sagging dip portion 33b of perpendicular frame 32 and the maintaining part 33a that extends to the width central authorities along continuous straight runs of rollgang 11 from the lower end of dip portion 33b.Maintaining part 33a raises the lower surface of high temperature steel 10 through the rising of crane (crossbearer 31, perpendicular frame 32); Be configured in the gap between the roller roller 12 of adjacency; Be positioned at the lower face of rollgang 11 through decline, be positioned at the surface of rollgang 11 through rising.
But; The thickness of maintaining part 33a, width equidimension receive the restriction of the size in the gap between the roller roller 12; And can not make it to have unnecessary size, therefore in order to ensure the structural strength that can stably keep steel, at high temperature protect maintaining part 33a to become particularly important.
Simultaneously, be formed in the contacting of maintaining part 33a in suppress that steel 10 produce that temperature are uneven, the structure of the shock loading of moment of withstanding lifting steel 10 etc. is also extremely important.
Figure 10 A, Figure 10 B are the enlarged drawing of the maintaining part 33a of the keeping arm 33 in one embodiment of the present invention, and Figure 10 A is a front view, and Figure 10 B is a vertical view.Shown in Figure 10 A, Figure 10 B, maintaining part 33a has heat insulating construction portion 40 at the upper surface of maintaining part body 39.
Figure 11 is the figure of the A-A direction of arrow of Figure 10 A, at length shows heat insulating construction portion 40.Heat insulating construction portion 40 comprises: first heat-insulating material 46, a side that contacts with steel of covering maintaining part body 39; The cover 45 of steel, cross section are " コ " font, cover first heat-insulating material 46 and contact with steel.And, the cover of steel 45 through welded and installed on maintaining part body 39, and on the ceiling subordinate surface of the cover 45 of steel with regulation be interval with projection 48, projection 48 injects and is located in the hole on first heat-insulating material 46, positions thus.
Here, first heat-insulating material 46 be with heat-resistant inorganic materials such as oxide ceramics be primary raw material porous material, fibrous material, fire material, be with Al
2O
3, SiO
2, ZrO
2Deng the heat-insulating material that is primary raw material.But first heat-insulating material 46 is harder and crisp, thereby be hit easily load and breakage, therefore utilizes the cover 45 of steel to cover, and the cover 45 through this steel stops shock loading.And, the cover 45 preferred steel plates of thickness of slab below 12mm that use of steel.If use this sheet metal, even then contact the temperature that also can rise at short notice with this steel same degree with the high temperature steel, cool off the part of the steel that therefore can prevent to be kept.More preferably below the 6mm.But, though the thin-walled property of steel is suppressing preferred aspect the inhomogeneous cooling, existing problems aspect intensity, the shock loading when having the weight that receives steel 10, lifting and deforming makes the danger of inboard first heat-insulating material, 46 breakages.Therefore, there is limit in the thin-walled property of cover, can be according to the suitably decisions such as weight of the steel 10 of lifting.
As stated; In this embodiment; Maintaining part 33a has heat insulating construction portion 40; This heat insulating construction portion 40 is made up of first heat-insulating material 46 with high thermal insulation of a side that contacts with steel 39 that covers maintaining part body 39 and the cover 45 of the steel that covers first heat-insulating material 46 and contact with steel, therefore utilizes first heat-insulating material 46 can at high temperature protect maintaining part body 39, and utilizes the cover 45 of steel can stop shock loading.
Then, the related keeping arm of other embodiments of the present invention is narrated.The related keeping arm of this embodiment has heat insulating construction portion 41 shown in figure 12, replaces the heat insulating construction portion 40 shown in Figure 11 in the above-mentioned embodiment with this.
That is, heat insulating construction portion 41 comprises: first heat-insulating material 46, a side that contacts with steel of covering maintaining part body 39; The cover 45 of steel covers first heat-insulating material 46, and the cross section is " コ " font; With second heat-insulating material 47, be installed in the upper and lower surfaces of ceiling portion of the cover 45 of steel, have the elasticity that contacts with steel.In addition; The cover 45 of steel passes through welded and installed on maintaining part body 39; And the lower surface in the ceiling portion of the cover 45 of steel is provided with projection 48 with predetermined distance, and projection 48 injects and is located in the hole on first heat-insulating material 46 and second heat-insulating material 47, positions thus.
Here, first heat-insulating material 46 be with heat-resistant inorganic materials such as oxide ceramics be primary raw material porous material, fibrous material, fire material, be with Al
2O
3, SiO
2, ZrO
2Deng the heat-insulating material that is primary raw material.This first heat-insulating material 46 has high thermal insulation, can at high temperature protect maintaining part body 39.But; First heat-insulating material 46 is harder and crisp, receives shock loading easily and breakage, and therefore the cover 45 with steel covers; And rubber-like second heat-insulating material 47 is installed on the cover 45 of this steel, and the cover 45 and second heat-insulating material 47 through steel stop shock loading.And,, thereby can also prevent that the part of steel from cooling off because second heat-insulating material 47 contacts with steel.And second heat-insulating material 47 is a heat resistant fibre, is the cloth shape heat proof material that weaving carbon fiber, organic fiber etc. form.Enroll metal material such as stainless steel fibre and the fabric high resilience of compoundization, also have the elasticity of appropriateness, therefore can play the effect of reinforcement.By the way, as the hear resistance organic fiber, can utilize carbon fiber, para-aramid fiber, meta-aramid fiber etc.
As stated; In this embodiment; Maintaining part 33a has heat insulating construction portion 41; This heat insulating construction portion 41 is by on the cover 45 of the steel of first heat-insulating material 46 of a side that contact with steel that covers maintaining part body 39, covering first heat-insulating material 46 and the cover that is installed in steel 45 and have flexible second heat-insulating material 47 that contacts with steel and constitute; Therefore, can at high temperature protect maintaining part body 39, and utilize the cover 45 of steel and second heat-insulating material 47 can stop shock loading through first heat-insulating material 46.And, the part cooling of the steel that can also prevent through second heat-insulating material 47 to be kept.
In the above-described embodiment, show the situation that cover uses the situation of steel cover and uses steel cover and rubber-like second heat-insulating material, but cover also can only use rubber-like second heat-insulating material.That is, also can directly dispose rubber-like second heat-insulating material, stop shock loading and prevent the part cooling of steel through second heat-insulating material on the top of first heat-insulating material.
And; The holding device 1 of the steel with keeping arm 33 of above-mentioned each embodiment; When carrying out the rolling grade of overtaking, as shown in Figure 5, make electronic cylinder 22 actions; Steel 10 are carried on the maintaining part 33a of keeping arm 33, be lifted to height and the maintenance that follow-up steel can pass through from roller roller 12.
Therefore, in the equipment of hot rolling of steel, in the upstream side or the downstream of hot-rolling mill; The holding device 1 of the related steel of this embodiment is set, the steel rolling that to use that hot-rolling mill will need etc. to be cooled for the thickness of stipulating after, make this steel standby in place that follow-up steel can pass through through holding device 1; With hot mill rolling follow-up steel to be cooled such as need not, on the other hand, the steel in the standby are sent back on the rollgang 11; Following follow-up steel proceeds rolling with hot-rolling mill; Thus, can avoid hot-rolling mill to produce free time, and can also in cooling is waited for, suppress the temperature inequality of the steel in the standby owing to cooling off wait; Therefore, can make stable steel such as form accuracy, material expeditiously.
And, here, be that the situation of steel is illustrated as an example with the metal material, but the invention is not restricted to this, can also be applied to metal material and be the situation of non-ferrous metal materials such as aluminium.
With reference to accompanying drawing an embodiment of the invention are described.The situation that with the rolling stock is steel is narrated as an example.Figure 14 representes the layout of the equipment of hot rolling that an embodiment of the invention are related and uses the figure of step of the hot-rolling method of this equipment of hot rolling.In Figure 14,51 is heating furnace, and 52 is the holding device as apparatus ' of standby, and 53 is reversible hot rolling mill, and 54 is water cooling plant.
Wherein, holding device 52 is located at the upstream side of reversible hot rolling mill 53, and the high temperature rolling material is lifted to the height that follow-up rolling stock can pass through and keeps from rollgang, makes it standby till become set point of temperature.And water cooling plant 54 is located at the downstream of reversible hot rolling mill 53, is used for high-temperature material is cooled to the temperature of regulation.
And, in reversible hot rolling mill 53 during rolling controlled rolling material, will begin rolling till the thickness of slab from steel billet thickness to controlled rolling and be called roughing, will begin thickness of slab rolling till the finish rolling thickness of slab (thickness of slab after the finish rolling) from controlled rolling and be called finish rolling.
And, utilize this equipment of hot rolling, when rolling two controlled rolling materials (the first steel billet A, the second steel billet B) and a common rolling stock (the 3rd steel billet C), carry out according to the step of following (1) to (6).Wherein, the controlled rolling material given an example is steel to be cooled such as needs, and common rolling stock is given an example to steel to be cooled such as need not.
(1) the first steel billet A that extracts out from heating furnace 51 is transported on the rollgang, directly delivers on the reversible hot rolling mill 53 through holding device 52.Utilize reversible hot rolling mill 53 to carry out roughing afterwards.
(2) then, with reversible hot rolling mill 53 in the first steel billet A carry out roughing almost simultaneously, extract the second steel billet B out from heating furnace 51, directly through holding device 52, when the roughing of the first steel billet A finishes, arrive reversible hot rolling mill 53.The first steel billet A after the roughing end is delivered to cooling device 54, carry out the temperature adjustment, be cooled to till the temperature range of the regulation that is fit to finish rolling.During this, the second steel billet B carries out roughing through reversible hot rolling mill 53.
(3) afterwards, when the roughing of the second steel billet B finished, this second steel billet B was sent to holding device 52, is lifted from rollgang, began to carry out the temperature adjustment, but was cooled to the temperature of controlled rolling.At this moment, the temperature adjustment cooling of the first steel billet A in water cooling plant 54 finishes, and sends back to and carries out finish rolling on the reversible hot rolling mill 53.
(4) afterwards, when the finish rolling of the first steel billet A finished, the first steel billet A delivered to finishing procedure afterwards directly through water cooling plant.
(5) then, carry out in the process of finish rolling, extract the 3rd steel billet C out, cross the second steel billet B that is held device 52 liftings, deliver to reversible hot rolling mill 53 from heating furnace 51 at the first steel billet A.When the finish rolling of the first steel billet A finishes, begin the rolling of the 3rd steel billet C, when rolling ends of the 3rd steel billet C, the 3rd steel billet C delivers to finishing procedure afterwards directly through water cooling plant 54.
(6) afterwards, when the rolling end of the 3rd steel billet C, the second steel billet B that is held device 52 liftings is sent back on the rollgang, the second steel billet B is delivered to reversible hot rolling mill 53, be rolling to the finish rolling thickness of slab.When the finish rolling of the second steel billet B finished, the second steel billet B delivered to finishing procedure afterwards directly through water cooling plant B.
So; In this embodiment, when two needs are waited for that Cooling Control rolling stock and a common rolling stock are rolled, suitably made up the cooling that utilizes cooling device 4 and utilized the overtaking of holding device 52 rolling; Therefore; Can further reduce the free time of reversible hot rolling mill 53, increase the radical of the rolling stock that is rolled, thereby can further improve rolling efficiency.
And, in this embodiment,, use rolling stock is lifted to height that follow-up rolling stock can pass through and the holding device that keeps from rollgang as the apparatus ' of standby of rolling stock.This be because; If use this holding device; Then easily rolling stock is moved from rollgang; Perhaps easily rolling stock is sent back on the rollgang, but the invention is not restricted to this, for example also can use rolling stock is moved and traversing dynamic formula apparatus ' of standby that follow-up rolling stock can be passed through to transverse direction from the rollgang.
With reference to accompanying drawing an embodiment of the invention are described.Being that the situation of steel describes as an example with rolling stock.Figure 15 representes the layout of the equipment of hot rolling that an embodiment of the invention are related and uses the figure of step of manufacturing of the steel of this equipment of hot rolling.In Figure 15,51 is heating furnace, and 54 is water cooling plant, and 52 is the holding device as apparatus ' of standby, and 53 is reversible hot rolling mill.
Wherein, holding device 52 is located at the upstream side of reversible hot rolling mill 53, is used for the high temperature steel that are rolling to the regulation thickness of slab are lifted to height and the maintenance that follow-up rolling stock can pass through from rollgang, makes its standby.And water cooling plant 54 is located at the upstream side of holding device 52, is used for the steel of cooling down high-temperature.And, on water cooling plant 54 and holding device 52, be separately installed with the thermometer 55,56 that is used to measure the steel temperature.
When using this equipment of hot rolling to make up rolling controlled rolling material (the first steel billet A) and common rolling stock (the second steel billet B), be rolled according to the step of following (1) to (6).Wherein, the controlled rolling material given an example is steel to be cooled such as needs, and common rolling stock is given an example to steel to be cooled such as need not.
And; In reversible hot rolling mill 53 during rolling controlled rolling material; To begin rolling till the thickness of slab (for example, 80mm) from steel billet thickness (for example, 215mm) to controlled rolling and be called roughing, will begin thickness of slab rolling till the finish rolling thickness of slab (thickness of slab after the finish rolling) from controlled rolling and be called finish rolling.
(1) the first steel billet A that in heating furnace 51, is heated to set point of temperature (for example, 1150 ℃) is transported on the rollgang, directly through water cooling plant 54 and holding device 52, delivers to reversible hot rolling mill 53.Afterwards, carry out roughing with reversible hot rolling mill 53.
(2) the first steel billet A after roughing finishes is transported to holding device 52, also keeps to the top lifting from rollgang through holding device 52.
(3) then, when the first steel billet A in reversible hot rolling mill 53 carries out roughing, extract the second steel billet B out,, and then cross the first steel billet A that just is held device 52 maintenances, arrive reversible hot rolling mill 53 directly through water cooling plant 54 from heating furnace 51.
(4) arrive the second steel billet B behind the reversible hot rolling mill 53, be rolling to the finish rolling thickness of slab of regulation after, deliver to finishing procedure.
(5) on the other hand, the first steel billet A that is held device 52 maintenances turns back on the rollgang in the operation of rolling of the second steel billet B, delivers to water cooling plant 54, is cooled to the temperature of regulation.At this moment, be adjusted at air cooling time and the water-cooled time in water cooling plant 54 on holding device 52 and the rollgang, can begin the finish rolling of the first steel billet A immediately after making the rolling end of the second steel billet B.
Promptly; Keeping in the process of the first steel billet A with holding device 52; Utilize thermometer 56 to measure the temperature of the first steel billet A,, be set in the water-cooled zero hour and water-cooled finish time in the water cooling plant 54 according to this temperature-measuring results; But make the temperature that the rolling finish time become controlled rolling (for example, 850 ℃) of the temperature of the first steel billet A at the second steel billet B of prediction.Afterwards, according to this setting, the first steel billet A is delivered to water cooling plant 54 carry out water-cooled.And, as required, utilize the thermometer 55 of water cooling plant 54 to measure the temperature of the first steel billet A before water-cooleds begin, according to this measurement result, be set in the water-cooled zero hour and water-cooled finish time in the water cooling plant 54 once more.
(6) afterwards, the first steel billet A after the water-cooled in water cooling plant 54 finishes delivers to reversible hot rolling mill 53, after the rolling end of the second steel billet B, then proceeds finish rolling, delivers to finishing procedure afterwards.
So; In this embodiment; The rolling finish time of steel that can be corresponding follow-up; To be cooled to the temperature stipulated constantly in regulation with the controlled rolling material of holding device 52 standbies through water cooling plant 54, so reversible hot rolling mill 53 can not have idly and be rolled, for example can rolling efficiency be brought up in the past 1.5 times.
And, in this embodiment, dispose water cooling plant 54, holding device 52, reversible hot rolling mill 53 in order, but also can be configured by the order of holding device 52, water cooling plant 54, reversible hot rolling mill 53 from upstream side.
And; In this embodiment; Apparatus ' of standby as steel; Use is lifted to height that follow-up steel can pass through and the holding device that keeps with steel from rollgang, but the invention is not restricted to this, for example also can use steel are moved and traversing dynamic formula apparatus ' of standby that follow-up steel can be passed through to transverse direction from the rollgang.If use give an example as apparatus ' of standby of the present invention, steel are lifted to height that follow-up steel can pass through and the holding device that keeps from rollgang; Then can move steel from rollgang easily; Or easily steel are sent back on the rollgang, response is good, thereby preferred.
With reference to accompanying drawing an embodiment of the invention are described.Figure 16 representes the layout of the equipment of hot rolling that an embodiment of the invention are related and uses the figure of step of the steel hot rolling method of this equipment of hot rolling.
Shown in figure 16; The equipment of hot rolling that this embodiment is related is provided with heating furnace 51, first water cooling plant (front water cooling plant) 54, the holding device 52 as apparatus ' of standby, reversible hot rolling mill 53, second water cooling plant (back water cooling plant) 57 successively from upstream side.
Wherein, be located at the holding device 52 of reversible hot rolling mill 53 upstream sides, be used for the high temperature rolling material is lifted to the height that follow-up steel can pass through and keeps from rollgang, air cooling, standby are till the temperature that becomes regulation.And the front water cooling plant 54 that is located at holding device 52 upstream sides is respectively applied for the temperature of high temperature rolling material cooled to regulation with the back water cooling plant 57 that is located at reversible hot rolling mill 53 downstreams.
And, be provided for measuring the thermometer 55,56,58 of rolling stock temperature in front on water cooling plant 54, holding device 52, the back water cooling plant 57 respectively.
And, when utilizing rolling two the controlled rolling materials of this equipment of hot rolling (the first steel billet A, the 3rd steel billet C), carry out according to the step of following (1)～(6) with a common rolling stock (the second steel billet B).Wherein, the controlled rolling material given an example is steel to be cooled such as needs, and common rolling stock is given an example to steel to be cooled such as need not.
And; Wherein, In reversible hot rolling mill 53 during rolling controlled rolling material; To begin rolling till the thickness of slab (for example, 80mm) from steel billet thickness (for example, 215mm) to controlled rolling and be called roughing, will begin thickness of slab rolling till the finish rolling thickness of slab (thickness of slab after the finish rolling) from controlled rolling and be called finish rolling.
(1) in heating furnace 51, is heated to the first steel billet A after the set point of temperature (for example, 1150 ℃); Be transported on the rollgang; Directly deliver to reversible hot rolling mill 53, carry out the roughing of the first steel billet A with reversible hot rolling mill 53 through front water cooling plant 54 and holding device 52.
(2) the first steel billet A after roughing finishes is sent on the holding device 52, through holding device 52 lifting and keeping from the rollgang.
(3) then, when the first steel billet A in reversible hot rolling mill 53 carries out roughing, extract the second steel billet B out, directly, cross the first steel billet A that is held device 52 liftings, deliver to reversible hot rolling mill 53 through front water cooling plant 54 from heating furnace 51.
(4) deliver to the second steel billet B behind the reversible hot rolling mill 53, be rolling to the finish rolling thickness of slab of regulation after, directly, deliver to finishing procedure through back water cooling plant 57.
(5) on the other hand, be held the first steel billet A that device 52 keeps, in the operation of rolling of the second steel billet B, turn back on the rollgang, deliver to front water cooling plant 54, the temperature that is cooled to stipulate.At this moment; Be adjusted at air cooling time and water-cooled time in the water cooling plant 54 in front on holding device 52 and the rollgang; Can begin the finish rolling of the first steel billet A immediately after making the rolling end of the second steel billet B; But here; Even in front in the water cooling plant 54 cooling till the second steel billet B rolling finish time of prediction, but also can not the temperature of the first steel billet A be cooled to the temperature (for example, 850 ℃) of controlled rolling, so in front in the water cooling plant 54 with the rolling finish time of the first steel billet A water-cooled up to the second steel billet B; And further as after shown in (6), (8), (9) stated, but be cooled to the temperature of controlled rolling in the back in the water cooling plant 57.And, as required, utilize thermometer 56 and thermometer 55 to measure the temperature of the first steel billet A, according to this measurement result, but reaffirm the required water-cooled time till the temperature that is cooled to controlled rolling.
(6) afterwards; The second steel billet B is rolling to the finish rolling thickness of regulation; Directly deliver to finishing procedure through back water cooling plant 57, meanwhile, the first steel billet A after the water-cooled directly delivers to back water cooling plant 57 through reversible hot rolling mill 53 in the water cooling plant 54 in front.
(7) then, in the meantime, extract the 3rd steel billet C out, directly deliver to reversible hot rolling mill 53 through front water cooling plant 54 and holding device 52 from heating furnace 51.Afterwards, after the 3rd steel billet C is rolling to the regulation thickness of slab by reversible hot rolling mill 53, be transported to the upstream side of reversible hot rolling mill 53, deliver to front water cooling plant 54 and carry out water-cooled.
(8) on the other hand; Set the water-cooled time in the water cooling plant 57 of back; Make the first steel billet A that delivers to back water cooling plant 57 after the 3rd steel billet C is rolling to the regulation thickness of slab, can begin the finish rolling of the first steel billet A immediately, but as required, utilize thermometer 58 to measure the temperature of the 3rd steel billet C; According to this measurement result, the adjustment water-cooled time.
(9) afterwards; But be cooled to the first steel billet A after the temperature of controlled rolling through the water-cooled in the back water cooling plant 57; When the 3rd steel billet C is transported to the upstream side of reversible hot rolling mill 53; Deliver to reversible hot rolling mill 53, be rolling to the finish rolling thickness of slab of regulation after, directly deliver to finishing procedure through back water cooling plant 57.
(10) then, deliver to front water cooling plant 54 and the 3rd steel billet C after water-cooled to the set point of temperature, be sent to reversible hot rolling mill 53, be rolling to the thickness of slab of regulation after, directly deliver to finishing procedure through back water cooling plant 57.
So; In this embodiment; When rolling two needs are waited for the common rolling stock of Cooling Control rolling stock and, suitably will utilize the cooling and rolling combination of overtaking of using holding device 52 of front cooling device 54 and back cooling device 57, the free time that therefore can further reduce reversible hot rolling mill 53; Increase the radical of the rolling stock that is rolled, thereby can further improve rolling efficiency.
And; In this embodiment; From upstream side heating furnace 51, front water cooling plant 54, holding device 52, reversible hot rolling mill 53, back water cooling plant 57 are set in order, but also can be provided with by the order of heating furnace 51, holding device 52, front water cooling plant 54, reversible hot rolling mill 53, back water cooling plant 57.
And, in this embodiment,, use rolling stock is lifted to height that follow-up rolling stock can pass through and the holding device that keeps from rollgang as the apparatus ' of standby of rolling stock.This be because; Use this holding device; Can move rolling stock from rollgang easily; Or can easily rolling stock be sent back on the rollgang, but the invention is not restricted to this, for example also can use rolling stock is moved and traversing dynamic formula apparatus ' of standby that follow-up rolling stock can be passed through to transverse direction from the rollgang.
And, in this embodiment, being that the situation of steel is illustrated as an example with rolling stock, but the invention is not restricted to this, also can be applied to rolling stock and be the situation of non-ferrous metal materials such as aluminium.
Claims (6)
1. the holding device of a rolling stock, be used for equipment of hot rolling with rolling stock from the rollgang to above lifting and keeping, it is characterized in that having:
Crane liftably is configured in the top of rollgang; With
A plurality of keeping arms are located on the said crane in order to keep rolling stock in the rollgang both sides,
This keeping arm has maintaining part, and this maintaining part can fasten with the lower surface of rolling stock through the rising of crane,
Said maintaining part has: the maintaining part body; First heat-insulating material covers the side that contacts with rolling stock at least of this maintaining part body; And cover, cover said first heat-insulating material, and contact with rolling stock.
2. the holding device of rolling stock as claimed in claim 1 is characterized in that, crane is liftably supported by the supporter that is arranged on the rollgang both sides.
3. the holding device of rolling stock as claimed in claim 1 is characterized in that, crane is liftably kept by the stand that is arranged on the rollgang top.
4. like the holding device of each described rolling stock in the claim 1 to 3, it is characterized in that keeping arm has: dip portion, sagging downwards from crane; And maintaining part, extend to rollgang width center direction from the lower end of this dip portion.
5. an equipment of hot rolling has: hot-rolling mill; Rollgang is by being used for that rolling stock is transported to a plurality of roller rollers on this hot-rolling mill and the baffle plate that is arranged in the gap between each roller roller constitutes; And holding device,, it is characterized in that rolling stock lifting and keeping from the said rollgang at the upstream side of said hot-rolling mill,
Said holding device is each described holding device in the claim 1～4,
The maintaining part of the keeping arm of this holding device is configured in the gap between the roller roller, and in the gap between the roller roller the part of going up and down except that maintaining part, is provided with baffle plate.
6. the manufacturing approach of a metal material is used the described equipment of hot rolling of claim 5, it is characterized in that; After with said hot-rolling mill metal material being rolled into the thickness of regulation; Utilize said holding device to make this metal material standby, with the follow-up metal material of said hot mill rolling, on the other hand in the place that follow-up metal material can pass through; Metal material in the standby is turned back on the rollgang, follow said follow-up metal material and continue to be rolled with said hot-rolling mill.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2007/055313 WO2008111233A1 (en) | 2007-03-09 | 2007-03-09 | Hot rolling equipment and method for manufacturing steel product using the hot rolling equipment |
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| CN101646508A CN101646508A (en) | 2010-02-10 |
| CN101646508B true CN101646508B (en) | 2012-06-06 |
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| CN2007800520964A Active CN101646508B (en) | 2007-03-09 | 2007-03-09 | Hot rolling equipment and method for manufacturing steel product using the hot rolling equipment |
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| KR (3) | KR101176815B1 (en) |
| CN (1) | CN101646508B (en) |
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| CN102435072A (en) * | 2011-12-06 | 2012-05-02 | 武汉钢铁(集团)公司 | Walking beam type heating furnace and steel-pushing type heating furnace shared plate slab transporting equipment |
| CN103913069B (en) * | 2014-03-11 | 2015-10-28 | 斯坦因（上海）工业炉有限公司 | Dress extractor translation driving device for hydraulic motor |
| CN105458557B (en) * | 2014-09-02 | 2019-07-26 | 中集集团集装箱控股有限公司 | A kind of container assemblies welding bench |
| DE102016217720A1 (en) * | 2016-09-16 | 2018-03-22 | Sms Group Gmbh | Movable thermal insulation trolley during metalworking |
| JP7095432B2 (en) | 2018-06-21 | 2022-07-05 | 日本製鉄株式会社 | Temperature measuring device, hot working system and temperature measuring method |
| CN113296463A (en) * | 2021-05-17 | 2021-08-24 | 潍坊特钢集团有限公司 | Control system of metal square billet machining device and implementation method thereof |
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| CN1262365C (en) * | 2001-10-10 | 2006-07-05 | 杰富意钢铁株式会社 | Method of manufacturing steel plate |
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|---|---|---|---|---|
| JPS58202907A (en) * | 1982-05-22 | 1983-11-26 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling equipment of thick plate |
| JPS5939405A (en) * | 1982-08-30 | 1984-03-03 | Sumitomo Metal Ind Ltd | Rolling line for thick plate |
| JPH02114102U (en) * | 1989-02-27 | 1990-09-12 |
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2007
- 2007-03-09 KR KR1020127012553A patent/KR101176815B1/en active IP Right Grant
- 2007-03-09 KR KR1020097018791A patent/KR20100005009A/en not_active Application Discontinuation
- 2007-03-09 WO PCT/JP2007/055313 patent/WO2008111233A1/en active Application Filing
- 2007-03-09 CN CN2007800520964A patent/CN101646508B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262365C (en) * | 2001-10-10 | 2006-07-05 | 杰富意钢铁株式会社 | Method of manufacturing steel plate |
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| Title |
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| JP平2-114102U 1990.09.12 |
| JP昭58-202907A 1983.11.26 |
| JP昭59-39405A 1984.03.03 |
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| KR101176815B1 (en) | 2012-08-24 |
| KR20120073335A (en) | 2012-07-04 |
| KR20100005009A (en) | 2010-01-13 |
| WO2008111233A1 (en) | 2008-09-18 |
| KR20120073336A (en) | 2012-07-04 |
| KR101321696B1 (en) | 2013-10-23 |
| CN101646508A (en) | 2010-02-10 |
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