CN105478499B - A kind of shaped steel cooling device - Google Patents
A kind of shaped steel cooling device Download PDFInfo
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- CN105478499B CN105478499B CN201510903439.XA CN201510903439A CN105478499B CN 105478499 B CN105478499 B CN 105478499B CN 201510903439 A CN201510903439 A CN 201510903439A CN 105478499 B CN105478499 B CN 105478499B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
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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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/0805—Flat bars, i.e. having a substantially rectangular cross-section
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Abstract
The invention discloses a kind of shaped steel cooling device, belongs to hot-rolled steel cooling field, including cold bed factory building and cold bed, it is characterised in that：The cold bed entrance of the cold bed factory building and cold bed exit are provided with entrance foundation ditch and outlet foundation ditch, and the top of cold bed factory building is provided with ventilator；Strong air-cooler is installed below cold bed；Entrance foundation ditch and outlet foundation ditch are stretched out outside cold bed factory building, and entrance foundation ditch is communicated with outlet foundation ditch by foundation ditch below cold bed；Described entrance foundation ditch length, depth are respectively smaller than outlet foundation ditch, and foundation ditch is stepped, and lower rank and outlet foundation ditch are horizontal, and upper rank is horizontal with entrance foundation ditch.There is the characteristics of rate of temperature fall is high, and the cooling of shaped steel surface is uniform, and flexural deformation is small compared with prior art.
Description
Technical field
It is particularly a kind of to be applied to enter sector-style to shaped steel, especially H profile steel the present invention relates to a kind of hot-rolled steel cooling device
Cold cooling device.
Background technology
Shaped steel is a kind of bar structural section for having certain section shape and size, is steel four major varieties (plate, pipe, type, silk)
One of.According to section configuration, shaped steel divides simple shape and compound section shaped steel, and the latter is also known as deformed steel, including the latter refers to H
Shaped steel, channel-section steel, rail, casement section steel, bending shaped steel etc., and the flat-bulb steel of shipbuilding.Complicated shaped steel obtains preparation method and is divided into again
Two kinds of welding and hot rolling, there is intensity defect in the former, so hot-rolled steel section application surface is more extensive at present.
The final temperature of hot rolling is generally 800~900 DEG C, needs to carry out being cooled to 80 DEG C or so afterwards, is situated between according to cooling
Matter is different, and cooling is divided into air cooling, oil cooling, air-cooled, water cooling etc..The key control point of cooling technique is cooling velocity, above-mentioned cooling speed
Spend water cooling it is most fast, air cooling is most slow, and oil cooling, it is air-cooled therebetween.Cooling velocity and cooling means can cause steel tissue
With the fluctuation of performance：In order to obtain superior function, pressure cooling provision is taken after finish to gauge so that the crystal grain refinement of steel, delivery
Steel have higher comprehensive mechanical property.Cold and hot roll process is controlled at present and is applied to wire rod hot rolling more, for complicated shaped steel hot rolling, by force
Refrigeration but easily influences steel tissue and its cross sectional shape, causes final product quality defect.Quick cooling is forced to increase steel
Performance, burial pit insulation slow cooling can reduce the deformation effect that cooling zone is come, cooling velocity and cooling zone come deformation this two
Contradiction between person is difficult point maximum in complicated shaped steel hot rolling cooling technique, and this contradiction is in the bigger rail section of specification
It is even more to protrude in production.
In addition, shaped steel could carry out straightening processing when needing to be cooled to certain temperature in process of production, cool down not in time,
It can then cause to be forced the speed of production for slowing down shaped steel.
In order to alleviate this contradiction, solves the problems, such as slow cooling cold bed natural cooling scarce capacity, current usual technique is led to
Often can be on cold bed directly using spraying or the type of cooling of water spray, in the hope of accelerating to cool down, but this kind of technique can not solve
State problem, however it remains following defects：1. water-spraying control can make complicated shaped steel due to inhomogeneous cooling, so as to Bending Deformation occur；
2. water smoke is attached to shaped steel surface, shaped steel is easily set to produce corrosion；3. because vapor can not be discharged in time in cooling procedure,
So as to cause to corrode to the driving of cold bed region and steel construction；4. water resource is unable to centralized recovery, the significant wastage of water resource is caused.
In order to reduce the adverse effect of spray water belt, Some Enterprises also attempt to be cooled down with air-cooled, but due to general
Cold cooling velocity of divulging information is slow compared with water cooling, limits the production efficiency of product.And it is common it is single it is air-cooled can still cause Bending Deformation,
And after air-cooled intensity increase, the external environment temperature difference is larger, the institutional framework exacerbated inside steel is unstable.
It is therefore desirable to one kind can carry out quickly cooling down to shaped steel, improve shaped steel cooling uniformity, improve Section Steel Production
The cooling device of efficiency.
The content of the invention
The technical assignment of the present invention is to be directed to above the deficiencies in the prior art, there is provided a kind of shaped steel cooling device, to increase
Strong cooling velocity, steel production efficiency is improved, and deformation defect will not be brought.
The present invention solve its technical problem technical scheme be：A kind of shaped steel cooling device, including cold bed factory building and cold bed,
It is characterized in that：The cold bed entrance of the cold bed factory building and cold bed exit are provided with entrance foundation ditch and outlet foundation ditch, cold bed factory building
Top be provided with ventilator；Strong air-cooler is installed below cold bed；Entrance foundation ditch and outlet foundation ditch are stretched out outside cold bed factory building,
Entrance foundation ditch is communicated with outlet foundation ditch by foundation ditch below cold bed；Described entrance foundation ditch length, depth are respectively smaller than outlet base
Hole, foundation ditch are stepped, and lower rank and outlet foundation ditch are horizontal, and upper rank is horizontal with entrance foundation ditch.
The width of above-mentioned foundation ditch is more than or equal to the width of cold bed.
Above-mentioned strong air-cooler and ventilator are multiple, and multiple ventilator linearly arrange, and ventilator is linearly aligned
Width is consistent with cold bed width, and described multiple strong air-coolers linearly arrange, the linearly aligned width of strong air-cooler and cold bed
Width is consistent, and the air-flow that the spacing of adjacent two powers' air-cooler can enable two powers' air-cooler blow to cold bed intersects.
Above-mentioned strong air-cooler and ventilator number is equal, and the angle between the air outlet and ventilator of strong air-cooler is
15 °~20 °.
Above-mentioned strong air-cooler is arranged at rear 1/3rd in cold bed.
Compared with prior art, the present invention has beneficial effect following prominent：
1st, using the design of foundation pit at both ends, air is made to enter cold bed by the foundation ditch at the both ends of cold bed factory building, air exists
Strong convection is formed in motion process, optimized integration is air-cooled.
2nd, shaped steel is cooled down without using water smoke, therefore shaped steel and the driving of cold bed region and steel construction non-corroding phenomenon
Occur.
3rd, by forcing control cold, rate of temperature fall is lifted, hot rolling is reduced to the time loss between correction, improves steel production
Efficiency, mass rapid degree production yields demand can be met.
4th, ladder air cooling technology, although cooling rate cream, the cooling of shaped steel surface is uniform, and flexural deformation is small.
Brief description of the drawings
Fig. 1 is the side structure schematic view of comparative example of the present invention.
Fig. 2 is the side structure schematic view of the embodiment of the present invention 1.
Fig. 3 is the side structure schematic view of the embodiment of the present invention 2.
Fig. 4 is the structural representation that comb part is condensed in the embodiment of the present invention 2.
Fig. 5 is the BD1 operation of rolling schematic diagrames of the embodiment of the present invention 3.
Fig. 6 is embodiment of the present invention 3BD2, DRDFOperation of rolling schematic diagram.
Fig. 7 is that the embodiment of the present invention 3 rolls gained material template portion schematic cross-section through BD2.
Embodiment
With reference to specification drawings and specific embodiments, the present invention is further described.
For the ease of narration, it is defined, is entered before steel direction is, after tapping direction is by walking steel direction.
Comparative example (conventional air-cooled group)：For Q235B and Q345B, specification is：500×200×10×16mm.
As shown in figure 1, taking conventional air cooling device, the lower section of cold bed 6 is provided with a plenum chamber 16, described static pressure
A plurality of slit spout 17 is provided with case 16, the width of slit spout 17 is consistent with the width of cold bed 6.When entering to plenum chamber 16
When gas port is by air blower input air, air is discharged through plenum chamber 16 by slit spout 17, and air draught is directly blown in H profile steel
Surface on it is cooled down.80 DEG C are down to using 950 DEG C of the reference examples of above-mentioned conventional air cooling way, cooling velocity is
14.75℃/min。
Embodiment 1 (air blast cooling group)：For Q235B and Q345B, specification is：500×200×10×16mm.
As shown in Fig. 2 it is respectively equipped with entrance foundation ditch 31 and outlet base at cold bed entrance 1 and the cold bed outlet 7 of cold bed factory building 2
Hole 37, the width of foundation ditch are more than or equal to the width of cold bed 6, and entrance foundation ditch 31 and outlet foundation ditch 37 are stretched out outside cold bed factory building 2,
Entrance foundation ditch 31 communicates with outlet foundation ditch 37 with the lower section foundation ditch 3 of cold bed 6.The top of cold bed factory building 2 is provided with one or more divulge information
Device 4, such as to be multiple, then multiple ventilator 4 linearly arrange, and 4 linearly aligned width of ventilator is consistent with the width of cold bed 6.
The lower section of cold bed 6 is provided with one or more strong air-coolers 5, and multiple strong air-coolers 5 linearly arrange, the strong linear rows of air-cooler 5
The width of row is consistent with the width of cold bed 6, and the spacing of adjacent two powers' air-cooler 5 can make the gas that two powers' air-cooler 5 blows to cold bed 6
Stream can intersect, and will not produce dead angle, so as to avoid H profile steel inhomogeneous cooling.Strong air-cooler 5 and the number phase of ventilator 4
According to hot-air move towards to dispose Deng, position.Used in prioritization scheme for multiple strong air-coolers 5 and multiple ventilator 4, quantity and
Spacing is related to the parameter of ventilator 4 and steel to be cooled according to cold bed 6 length, strong air-cooler 5, but in order in the accompanying drawings more
Good performance airflow direction, the last a pair air-cooler 5 and ventilator 4 are only depicted in accompanying drawing.Strong air-cooler 5 is arranged in cold bed 6
Afterwards at 1/3rd near, centered on specific distribution after in cold bed 6 1/3rd is had a common boundary, total distributed distance is no more than cold bed and grown
Spend a quarter.The strong parameter of air-cooler 5 is inlet and outlet diameter 1000mm in the present embodiment, 36916 cubes ms/h of air quantity,
The pa of blast 371,1.5 meters or so of spacing between two strong air-cooler 5.The strong air-out direction of air-cooler 5 direction enters steel direction, so as to
In cold wind caused by strong air-cooler 5 to be blowed to the top portion ventilation device 4 of described cold bed factory building 2, and the whole area of cold bed 6 is guided with this
Air flow direction ventilator 4 at.
In the present embodiment, the described length of entrance foundation ditch 31, depth are respectively smaller than outlet foundation ditch 37.Air is by cold bed factory building
The foundation ditch at 2 both ends enters cold bed 6：The inlet air of entrance foundation ditch 31 carries out basic air-cooled, heat absorption rising, by the top ventilator 4 of cold bed 6
Exclude, constantly attract cold wind to enter from foundation ditch；Entrance foundation ditch 31 compare it is shallower, it is internal to be turned back design without pillar and bottom surface,
Its reason is the temperature highest of porch steel, and air needs to take away heat rapidly, but the section again can not be excessively strong cold, just
Beginning cooldown rate is too high then to influence steel product performance；It is longer relatively deep to export foundation ditch 37, its object is to ensure into cold wind
Temperature, lower temperature air intake one side optimized integration is air-cooled, on the one hand realizes air blast cooling by strong air-cooler 5.Strong air-cooler 5
Air outlet and ventilator 4 between angle be 15 °~20 °, the angle has considered the ascension of hot-air, it is ensured that efficient stream
It is dynamic.Entrance foundation ditch 31 communicates into foundation ditch 3 with outlet foundation ditch 37 by the lower section of cold bed 6, and stepped, lower rank and outlet is presented in foundation ditch 3
Foundation ditch 37 is horizontal, and upper rank is horizontal with entrance foundation ditch 31, and has multiple pillars in 6 times foundation ditches of cold bed 3, and the purpose of the pillar is
Make cold air formed at foundation ditch it is multinomial turn back, increase cooling effect, when cold air heat absorption to certain temperature rise exceed cold bed 6
, just can be rapidly from the loss of ventilator 4 when horizontal.In the optimization design of specific implementation, foundation ditch 3 can be uneven with bottom surface,
The a plurality of groove vertical preferably with walking steel direction.Its purpose is also：A part of high wind runs into steel stop and is refracted Hui Ji
In hole, hotter steel section is refracted to by groove, realization circulates, and blending, makes temperature tend to be uniform mutually, and from entrance
Foundation ditch 31 forms strong convection with entering two strands of air of factory building from outlet foundation ditch 37 in motion process, and by cold bed factory building 2
Square ventilator 4 excludes, and in convection process, hotter air rises two strands of air, colder air drop, so greatly carries
High air takes away the speed of heat.Three after cold bed 6/foundation ditch 3 of a part in install and laterally turn back blend stop.
The specific preferred parameter of the present embodiment is：The length of cold bed 6 is 40000mm, and entrance foundation ditch 31 is stretched out outside factory building
5500mm, outlet foundation ditch 37 stretch out the outer 9000mm of factory building.In the specific implementation, need to be entered according to die to be cooled, cooling requirement etc.
Row parameter adjustment.
The characteristics of embodiment 1, is, simple in construction, and H profile steel is directly down to 80 DEG C in cooling procedure by 950 DEG C, can be with even
Speed is advanced, without cooling down stage by stage.H profile steel average cooling rate is about 21.75 DEG C/min.The present invention uses both ends design of foundation pit
With ladder air cooling technology, air enters cold bed by the foundation ditch at the both ends of cold bed factory building, and rear 1/3rd intersections are set in cold bed 6
Strong air-cooler 5./ 3rd air enter from shallow, short entrance foundation ditch 31 before cold bed 6, without turning back design, rapidly with high fever steel
Material carries out heat exchange, and hot-air escapes rapidly from ventilator 4；1/3rd realize pressure wind by strong air-cooler 5 in cold bed 6
It is cold, and repeatedly turned back by pillar and bottom grooves, increase heat exchange efficiency, the rear that fully exchanges heat escapes from ventilator 4；
/ 3rd air enter from deep, long outlet foundation ditch 37 after cold bed 6, design of laterally turning back, for having carried out strong cold cooling
Steel carry out reducing temperature twice.Using this kind of type of cooling, cooling velocity lifting, and the poker temperature difference of cold bed is less than 10 under steel
DEG C, so as to ensure that while cooldown rate is increased, it ensure that cooling uniformity.
Embodiment 2 (mixes air-cooled group)：For Q235B and Q345B, specification is：500×200×10×16mm.
As shown in Figures 3 and 4, cold bed 6, entrance foundation ditch 31 and outlet foundation ditch 37, foundation ditch 3, ventilator 4 and strong air-cooler 5
Setting is the same as embodiment 1.
In addition, the stage casing of cold bed 6 and anterior (cold section of control) the top laying condensation comb 9 of back segment, the water inlet of condensation comb 9 lead to
The delivery port that water pump 12 is crossed with cistern 10 is connected.It is strong cold due to being provided with below cold bed 6 during H profile steel air blast cooling
Blower fan 5, so in cooling procedure, there is larger temperature difference in the lower regions temperature of H profile steel.It will be injected in condensation comb 9
Cold water, so as to reduce the temperature difference of H profile steel lower regions.Pressurized water tubes 8, described pressure (hydraulic) water are provided with above the front end of cold bed 6
The water inlet of pipe 8 be connected by booster with condensing the delivery port of comb 9, the delivery ports of pressurized water tubes 8 by overflow valve 11 and
The water inlet of cistern 10 is connected, and multiple atomizers 14 linearly arranged, the energy of atomizer 14 are provided with pressurized water tubes 8
It is enough that the stage casing shaped steel upper horizontal of cold bed 6 is pressurizeed water smoke to sprinkling.Because the water inlet of pressurized water tubes 8 is by condensing comb 9
The water with certain temperature after heat exchange, and go out mist direction and the level of cold bed 6, and the water smoke sprayed is easy to be evaporated into water steaming
Gas, a part of heat is taken away, air-flow is from the runaway of ventilator 4 caused by strong air-cooler 5 and ventilator 4, so as to make cold bed 6
Wen Duxiajiang above preceding stage casing, and be not in that water is fallen again.Due to water and not in contact with steel body and cold bed 6, therefore will not
There is the defects of water cooling, pollute rustization.So H profile steel temperature gradient diminishes, and thermal stress is small, and structural stress is small, so as to keep away
Exempt to cause H profile steel flexural deformation.Overflow valve 11 can stablize the pressure of pressurized water tubes 8, when the pressure in pressurized water tubes 8 is excessive,
When water can not spray from atomizer 14 in time, the outlet of overflow valve 11 is opened, and water is discharged into cistern 10, when pressurized water tubes 8
When interior pressure is reduced to desirable value, the port closing of overflow valve 11, so as to reach the mesh of the pressure in stable pressurized water tubes 8
's.
More than use design, the average cooling rate of H profile steel is about 29 DEG C/min.H profile steel in cooling procedure directly by
950 DEG C are down to 80 DEG C, without cooling down stage by stage.Due to laying condensation comb 9 in the top of cold bed 6H shaped steel, make H profile steel cold
But temperature field is than more uniform in temperature-fall period, so that yield strength, the tension in the upper lower flange of H profile steel and web everywhere are strong
Degree greatly improves.
Under same die, 950 DEG C are down to 80 DEG C, are compared by comparative example, embodiment 1 and the data of embodiment 2, three groups
Cooling velocity be respectively 14.75 DEG C/min, 21.75 DEG C/min, 29 DEG C/min, it can be seen that：Embodiment 1, embodiment 2 can
The quick cooling of H profile steel is realized, also, embodiment 2 is more preferably more preferable than the cooling effect of embodiment 1, and embodiment 2 passes through in H types
The top laying condensation comb 9 of steel, so as to reduce the temperature difference between H profile steel lower regions and web and the edge of a wing, reduces web
Thermal stress between the edge of a wing, avoid causing web to bend, H profile steel temperature field during cooling than more uniform, is carried
The high mean grain size and average yield strength of H profile steel.
Embodiment 3：For the cooling of flat-bulb steel, the overall production technology of flat-bulb steel comprises the following steps that：
(1) first blooming mill (BD1) rolls：After rectangular bloom heating, rectangular bloom is spreaded as flat blank, its width through BD1
Exhibition process flattens to extrude groove on slab first, then the boss beside groove.Rolled by subregion, reduce rolled piece and prolong
Stretch, increase is spreaded, and such absolute spread can use less power to make plate than that can have more 30% using conventional spreading
Base fully spreads, and is adapted to the slab for spreading big specification.As shown in figure 5, the present embodiment BD1 rollings specifically include 7 passages：1st
Passage, twice groove is extruded respectively in slab upper and lower surface；2nd passage, the boss between described twice groove is flattened；The
3 passages, the boss of described twice groove both sides is flattened；4th passage, extruded respectively in the centre of slab upper and lower surface together
Groove；5th passage, by described groove both sides boss pressure；6th passage, is rotated by 90 °, and carries out edging；7th passage, rotation
90 degree, spread again.So absolute spread using conventional spreading than that can have more 30%.In addition, other can be incited somebody to action by BD1
Rectangular bloom spreads can also use for the mode and hole type design of flat blank.
(2) second frame blooming mills (BD2) roll：As shown in the 1~4 of Fig. 6, the flat blank obtained by step 1 is rolled into through BD2
Symmetrical material type, the material type both ends are thick, intermediate thin.The thick end in both ends is forming " bulb " of flat-bulb steel, the plate of intermediate thin
Portion is forming " web " of flat-bulb steel." waveform " is presented in middle plate portion, as shown in fig. 7, described waveform is in midpoint
Existing bilateral is symmetrical.For the ease of narration, with the upper and lower for narration direction of Fig. 7, in prioritization scheme, described " waveform " is
Discontinuous sine curve, it is made up of four crests and three troughs：Four described crests include two big crest 22 and two
Small crest 21, described two big crest 22 is located at plate portion midpoint both sides, small trough 24 is formed between two big crest 22, described
The lowest point of small trough 24 is plate portion midpoint；Described two small crest 21 is located at end and plate portion joint, the homonymy it is small
It is big trough 23 between crest 21 and big crest 22, above curve waveform design sense is poor using radian so that in DRDFRoll
It is equal to extend ratio during system everywhere, mechanical property is equal everywhere so as to ensure flat-bulb steel web.
(3) two frame tandem two-roller mill (DRDF) rolling：As shown in the 5~8 of Fig. 6, through DRDF" waveform " material type is rolled
Into first material, described first material includes the flat-bulb steel that two symmetrical webs are connected, the symmetrical flat-bulb steel web connection of two of which
There is a depression at place, and recess thickness is less than the thickness at flat-bulb steel web, and angle is less than 180 ° on two symmetrical flat-bulb steel webs.
It is recessed formation can be：The boss to match with the depression is processed among the finished product lower roll groove of this milling train, is led to
Cross the sunk part that the boss shuts out junction, or any hole type design that can be completed its depression and be formed.Optimization side
Flat-bulb steel intermediate connections thickness is 3mm in case, and every flat-bulb steel web and horizontal line angle are 3 °.Ball is made by sunk structure
Band steel can be easier to split, and ensure split surface quality.
(4) the air-cooled Compound cooling of air cooling：Just material is cooled down gained into cold bed factory building 2 in step 3, described cold bed factory
Room 2, including cold bed 6, foundation ditch, ventilator 4 and strong air-cooler 5, the cold bed entrance 1 and cold bed of cold bed factory building 2 export to be set respectively at 7
There are entrance foundation ditch 31 and outlet foundation ditch 37, entrance foundation ditch 31 and outlet foundation ditch 37 are stretched out outside cold bed factory building 2, described entrance base
Cheat 31 length, depth is respectively smaller than outlet foundation ditch 37.Entrance foundation ditch 31 communicates with outlet foundation ditch 37 with the lower section foundation ditch 3 of cold bed 6, base
The presentation of hole 3 is stepped, and lower rank and outlet foundation ditch 37 are horizontal, upper rank and the level of entrance foundation ditch 31, and has in 6 times foundation ditches of cold bed 3 more
Individual pillar, three after cold bed 6/foundation ditch 3 of a part in install and laterally turn back blend stop.The top of the cold bed factory building 2 is provided with
Ventilator 4, the lower section of cold bed 6 are provided with strong air-cooler 5, and strong air-cooler 5 is arranged on rear 1/3rd intersections in cold bed 6, by force
The air-out direction of air-cooler 5 is towards steel direction is entered, in order to which cold wind caused by strong air-cooler 5 to be blowed to described cold bed factory building 2
Top portion ventilation device 4, and guided with this at air flow direction ventilator 4 in the whole area of cold bed 6.Flat-bulb steel in this step is just expected cold
But 80 DEG C directly are down to by 950 DEG C during, can at the uniform velocity be advanced, without cooling down stage by stage.Using both ends design of foundation pit and rank
Terraced air cooling technology, air enter cold bed 6 by the foundation ditch at the both ends of cold bed factory building 2：The air of entrance foundation ditch 31 enters naturally carries out base
Plinth cools down, and cold air heat absorption rises, and is excluded by the top ventilator 4 of cold bed 6, constantly attracts cold wind to enter from foundation ditch；Entrance base
Hole 31 compares shallower, and internal to be turned back design without pillar and bottom surface, its reason is the temperature highest of porch steel, air need
Heat is taken away rapidly, but the section again can not excessively strong cold, the too high then Wei Shi bodies tissue of initial cooldown rate and bainite group
A large amount of formation are knitted, influence steel product performance.1/3rd realize air blast cooling, strong air-cooler by strong air-cooler 5 in cold bed 6
Angle between 5 air outlet and ventilator 4 is 15 °~20 °, and the angle has considered the ascension of hot-air, it is ensured that efficiently
Flowing, and is repeatedly turned back by pillar and bottom grooves, increase cooling effect, heat exchange efficiency, fully heat exchange rear from
Ventilator 4 escapes；The purpose of the step-like design of foundation ditch 3, which is lain also in, reduces air blast cooling for before cold bed 6 1/3rd gentle skies
Cold influence, reduces Wei Shi bodies tissue and bainite structure is formed.Outlet foundation ditch of 1/3rd air from deep length after cold bed 6
37 enter, and foundation ditch posterior transversal is turned back design, the steel progress reducing temperature twice for having carried out strong cold cooling.Use this above-mentioned kind
The air-cooled Compound cooling of air cooling, (average cooling rate is risen to by 14.5 DEG C/min of common air-cooled cold bed for cooling velocity lifting
22.5 DEG C/min), and the poker temperature difference of cold bed is less than 10 DEG C under steel, so as to ensure that while cooldown rate is increased,
Cooling uniformity is ensure that, while also solves super large-scale model flat-bulb steel web because of deformation caused by inhomogeneous cooling and deadweight
With cooling wave problem, and cool down early stage too fast Wei Shi bodies tissue and bainite structure largely formed and caused by finished product it is strong
Spend the problem of poor.
(5) the first material cooled down carries out subdivision, aligning.The step, can also be straight respectively using subdivision, aligning machinery
Tapping into and align Unit erriger into subdivision, described aligning Unit erriger includes straightener and the disc type cutting equipment in front of it,
Rolled piece opens the junction cutting of two flat-bulb steels during traveling, and the preferable surface quality of split surface can be achieved, and in fact
Present line continuous operations, efficiency high.
It should be noted that the present invention particular to the present invention have been described in detail, for ability
For the technical staff in domain, its various of progress is obviously changed without departing from the spirit and scope of the present invention
Become all within protection scope of the present invention.
Claims (3)
1. a kind of compound section shaped steel cooling device, including cold bed factory building and cold bed, it is characterised in that：The cold bed factory building it is cold
Bed entrance and cold bed exit are provided with entrance foundation ditch and outlet foundation ditch, and the top of cold bed factory building is provided with ventilator；The lower section of cold bed
Strong air-cooler is installed；Entrance foundation ditch and outlet foundation ditch are stretched out outside cold bed factory building, and entrance foundation ditch passes through cold bed with outlet foundation ditch
Lower section foundation ditch communicates；Described entrance foundation ditch length, depth are respectively smaller than outlet foundation ditch, and foundation ditch is stepped below cold bed, under
Rank and outlet foundation ditch are horizontal, and upper rank is horizontal with entrance foundation ditch；There are multiple pillars, cold bed lower section foundation ditch bottom surface below cold bed in foundation ditch
It is uneven, three after cold bed/cold bed of a part below blend stop of laterally turning back is installed in foundation ditch；Described strong air-cooler
Equal with ventilator number, the angle between the air outlet and ventilator of strong air-cooler is 15 ° ~ 20 °, described strong air-cooler peace
At 1/3rd after in cold bed.
A kind of 2. compound section shaped steel cooling device according to claim 1, it is characterised in that：Base below described cold bed
The width in hole is more than or equal to the width of cold bed.
A kind of 3. compound section shaped steel cooling device according to claim 1, it is characterised in that：Described strong air-cooler and
Ventilator is multiple, and multiple ventilator linearly arrange, and the linearly aligned width of ventilator is consistent with cold bed width, described
Multiple strong air-coolers linearly arrange, the strong linearly aligned width of air-cooler two powers' air-cooler consistent with cold bed width, adjacent
Spacing two powers' air-cooler can be enable to blow to the air-flow of cold bed intersect.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295864.0A CN107838203B (en) | 2015-12-09 | 2015-12-09 | A kind of H profile steel water-cooling cooling device |
| CN201510903439.XA CN105478499B (en) | 2015-12-09 | 2015-12-09 | A kind of shaped steel cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903439.XA CN105478499B (en) | 2015-12-09 | 2015-12-09 | A kind of shaped steel cooling device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711295864.0A Division CN107838203B (en) | 2015-12-09 | 2015-12-09 | A kind of H profile steel water-cooling cooling device |
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| CN201510903439.XA Active CN105478499B (en) | 2015-12-09 | 2015-12-09 | A kind of shaped steel cooling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DD213142A1 (en) * | 1983-01-21 | 1984-09-05 | Thaelmann Schwermaschbau Veb | DEVICE FOR THE CONTROLLED AIR COOLING OF ROLLING GOODS |
| DD214536A1 (en) * | 1983-03-18 | 1984-10-17 | Thaelmann Schwermaschbau Veb | COOLER BED WITH ADDITIONAL BREATHING EQUIPMENT |
| DE3347033A1 (en) * | 1983-03-18 | 1984-09-20 | VEB Schwermaschinenbau-Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg | Cooling bed with additional ventilation devices |
| DD243174A3 (en) * | 1985-05-06 | 1987-02-25 | Thaelmann Schwermaschbau Veb | EQUIPMENT FOR ADDITIONAL BREATHING OF KLEHLBETTEN |
| JP2672000B2 (en) * | 1988-08-17 | 1997-11-05 | 株式会社神戸製鋼所 | Slow cooling device for steel on cooling floor |
| CN201880747U (en) * | 2010-10-29 | 2011-06-29 | 江苏泰富兴澄特殊钢有限公司 | Cold bed device |
| CN204700062U (en) * | 2015-05-14 | 2015-10-14 | 林州凤宝管业有限公司 | Air water spray cooling device on a kind of steel pipe roll road |
| CN205236625U (en) * | 2015-12-09 | 2016-05-18 | 日照钢铁控股集团有限公司 | Shaped steel cooling device |
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| CN105478499A (en) | 2016-04-13 |
| CN107838203B (en) | 2019-01-29 |
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