CN211757638U - Water-immersed square billet cooling bed - Google Patents
Water-immersed square billet cooling bed Download PDFInfo
- Publication number
- CN211757638U CN211757638U CN201922361956.5U CN201922361956U CN211757638U CN 211757638 U CN211757638 U CN 211757638U CN 201922361956 U CN201922361956 U CN 201922361956U CN 211757638 U CN211757638 U CN 211757638U
- Authority
- CN
- China
- Prior art keywords
- soaking
- pusher
- chain
- billet
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The utility model belongs to square billet cold bed field, especially a formula of soaking square billet cold bed, including the pusher, one side of pusher is equipped with places subaerial soaking cooling bath, one side that the pusher was kept away from to the soaking cooling bath is equipped with places subaerial collecting vat, the roll table of pusher extends to in the soaking cooling bath, the utility model discloses after the hot shears cuts, on unitized red steel billet is inputed the pusher through the roll table, in pushing straight and pushing into the soaking bath with the red steel billet on the roll table, the water logging in the pond has submerged steel billet upper surface 200mm, and a period of advancing carries out quick cooling in aqueous, shifts out the steel billet from aqueous through conveyor chain, and at this moment the surface temperature of steel billet falls to below 100 ℃, reaches complete refrigerated purpose.
Description
Technical Field
The utility model relates to a square billet cooling bed technical field especially relates to formula of soaking square billet cooling bed.
Background
At present, the main structural forms of the billet cooling beds of various domestic medium-sized steel rolling workshops are basically reciprocating or horizontal steel moving type 2. The defects are that the cooling capacity is insufficient, the temperature of the billet falling bed is overhigh and sometimes is above 500 ℃, the billet is easy to bend, and the cooling bed is heavy, large in occupied area, high in manufacturing cost and large in maintenance amount.
Take Tangshan iron and Steel group, Inc. as an example. The cooling bed for cooling the steel billet is a combined steel pushing and chain cooling bed. The cooling mode of the cooling bed is water spraying cooling, and the cooling effect is not ideal. In addition, because the output of the rolling mill is high, the temperature of the steel billet after being discharged from the bed is as high as 500-600 ℃, the steel billet is very easy to be bent when being discharged into the collecting tank, and the steel billet is also very easy to be bent when being loaded into a train. The higher temperature of the billet also causes difficulties for the packing work of workers.
According to the data, in order to enhance the cooling of the steel billet abroad, a water immersion type billet cooling machine, such as a water wheel type, a caisson type, a hydraulic stepping type and other water immersion cooling methods, is used. In China, the medium-sized saddle steel factory adopts a mode of entering water for rapid cooling to produce the steel rail connecting plate. The original first-grade steel medium-sized factory also adopts a mode of soaking in a large water tank to produce the angle steel.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a soaking type square billet cooling bed.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
soaking formula square billet cold bed, including the pusher, one side of pusher is equipped with places subaerial soaking cooling tank, the soaking cooling tank is kept away from one side of pusher and is equipped with the collecting vat of placing subaerial, the roll table of pusher extends to in the soaking cooling tank.
Preferably, be equipped with between soaking cooling bath and the collecting vat and place subaerial first support, one side fixed mounting that the bottom inner wall of soaking cooling bath is close to the pusher has the second support, and the top of first support and second support is all rotated and is installed the drive wheel, has cup jointed same chain on two drive wheels.
Preferably, the chain is arranged obliquely and is positioned in the soaking cooling tank.
Preferably, three steel moving chain racks are fixedly installed on the inner wall of the bottom side of the water immersion cooling tank at equal intervals, and the tops of the three steel moving chain racks are all in contact with the chain.
In the utility model, the water-immersed square billet cooling bed has good square billet cooling quality, the square billet is immersed in water and is uniformly cooled, the quality problems of bending and twisting and the like are basically not generated, the bending waste products before and after transformation are calculated, the bending waste products are reduced by about 0.3 percent, the annual output is calculated according to 20 ten thousand t, and the bending waste can be reduced by about 600t each year;
the surface quality of the square billet is good, the small square billet is soaked in water for cooling, the loss of the iron oxide skin can be reduced by about 0.2 percent, and the square billet can be produced by 400 tons each year according to the yield of 20 ten thousand tons each year;
the cost of a hoisting tool is saved, and because the steel billet is hoisted at normal temperature, the service life of the hoisting tool can be prolonged by more than 1 time, the hoisting tool is beneficial to automobile and train transportation, and the capital is saved by 2 ten thousand yuan each year;
the soaking type square billet cooling bed equipment has simple structure and easy maintenance, reduces various mechanical spare parts by about 30t compared with the prior art, and saves one-time investment by about 30 ten thousand yuan;
the original worker operates at the high temperature of 600-700 ℃, the steel temperature is not more than 100 ℃, the working environment of the worker is fundamentally improved, and the labor intensity of the worker is reduced.
The water-immersed cooling bed is suitable for cooling square billets such as common carbon, low alloy steel and the like.
Drawings
FIG. 1 is a schematic view of the front view structure of a pusher of the water immersion type square billet cooling bed of the present invention;
FIG. 2 is a schematic view of the top view structure of the pusher of the water-immersed square billet cooling bed of the present invention;
fig. 3 is a schematic structural view of the soaking type square billet cooling bed provided by the utility model.
In the figure: the steel pushing machine comprises a steel pushing machine 1, a water immersion cooling tank 2, a collecting tank 3, a first support 4, a second support 5, a driving wheel 6, a chain 7 and a steel moving chain frame 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, the water immersion type square billet cooling bed comprises a pusher 1, wherein the pusher 1 is powered by three cylinders, the cylinders are connected with a small rocker arm, the rotating radius of the small rocker arm is half of that of a large rocker arm, the large rocker arm and the small rocker arm are connected with a long shaft through a key, the large rocker arm is connected with a push head through a pin, the stroke of the cylinders is 400mm, and when the cylinders run to the maximum stroke, the maximum stroke of the push head runs to 800 mm. Install the wheel under the pusher, reduce the frictional resistance when the pusher moves, the wheel moves on three group's rails, and the rail is fixed on the roller table base, and one side of pusher 1 is equipped with places subaerial soaking cooling bath 2, and one side that the soaking cooling bath 2 kept away from pusher 1 is equipped with places subaerial collecting vat 3, and in the roller table of pusher 1 extended to soaking cooling bath 2, the group's steel billet that the roller table was carried and is come collided at flush baffle department. The steel is pushed straight by a pusher and pushed into the water tank one by one. When the steel billet slides from one end of the roller way, in order to avoid impacting the steel moving chain, the downslide track is made into a slope of 45 degrees, the downslide track is made of a light rail, the lower part of the light rail is fixed and supported by a support, the steel billet is prevented from falling down to smash the slideway, and the support is welded on the pre-buried iron of the water tank pool.
The utility model discloses in, be equipped with between soaking cooling bath 2 and collecting vat 3 and place at subaerial first support 4, one side fixed mounting that the bottom inner wall of soaking cooling bath 2 is close to pusher 1 has second support 5, and the top of first support 4 and second support 5 all rotates and installs drive wheel 6, has cup jointed same chain 7 on two drive wheels 6, installs five sets of driven sprocket assemblies under 2 one end bottoms of soaking cooling bath, the glide path. It is composed of a driven chain wheel, a short shaft, two groups of bearing seats and two groups of bases. The base is fixed on the basis of basin bottom, and the bearing frame is fixed on the base, and driven sprocket installs on the minor axis, and driven sprocket center and slide center are on one line. And a main transmission mechanism is arranged outside the top part close to the other end of the water tank, and a motor drives a speed reducer and a long shaft to drive a chain to run. The driving chain wheel is fixed on the main transmission long shaft, and the center of the driving chain wheel is in line with the center of the slideway. In the basin, move under the steel chain frame, the assembly of installation tow boat plays the supporting role to the chain, prevents that the chain from dragging ground, causes the chain wearing and tearing. When the chain passes through the water tank hole, the inclined slide way is installed, and the chain is prevented from being lapped on the water tank foundation and being abraded to the chain and the water tank foundation. The water tank is welded by a steel plate outside the water tank to prevent water in the water tank from overflowing.
The utility model discloses in, chain 7 sets up for the slope, and chain 7 is located soaking cooling bath 2.
The utility model discloses in, equidistant interval fixed mounting has three steel chain frame 8 that moves on the bottom side inner wall of soaking cooling bath 2, and the three top of moving steel chain frame 8 all contacts with chain 7, in the basin, adopts three different steel chain frames that move of group height to do and move the steel chain and support, fixes on the basis of bottom of the basin. The upper surface of the steel moving chain frame is made into an inclined plane inclined by 7 degrees (the design is clarified in the front of 7 degrees), and the distances of the three groups of steel moving chain frames are equally divided, so that the supporting stress of the chain slideway is uniformly distributed. Five groups of slideways are designed. The steel moving chain frame is provided with a slideway which inclines by 7 degrees and is made of channel steel. And a sliding rib is welded in the channel steel, so that the reliable operation of the chain is ensured.
The billet is taken out of the water tank through the main transmission mechanism and falls into the collecting tank. The lower steel plate is installed between the long shaft of the main transmission mechanism and the collecting tank, steel billets can be guaranteed to well fall into the collecting tank, and the steel billets are prevented from being clamped in a crack between the main shaft and the collecting tank to cause accidents. One end of the lower steel plate is welded on the pre-buried iron of the water tank, and the other end of the lower steel plate is welded on the edge of the collecting tank.
And after the steel billets fall into the collecting tank, hoisting the steel billets from the collecting tank by using a crane hoist. A water inlet pipeline is arranged on one side of the water tank and is responsible for storing water during normal production; when a fault occurs or equipment is overhauled, water needs to be drained, a drain pipe is arranged at the bottom of the water tank and communicated with the water tank, and a phi 150 valve is arranged outside the water tank, so that water can be drained at any time. The outer end of the drain pipe is connected with a drainage ditch of a production workshop, and the drained water flows into the ditch and can be recycled through a turbid circulating system
The technical scheme and the process parameter design are as follows:
1. specification of square billet:
the specification of the square billet is as follows: 47mmX47mmX6000 mm-56 mmX56mmX6000 mm; the steel grade is plain carbon steel and low alloy steel, and the raw material is 150mmX150mmX3000mm continuous casting billet; the average hourly production was: 38 t; the highest hourly production was: 50 t.
2. A manipulator part:
(1) length L of the manipulator:
the length of the roller way is 500mm, and the length of the bearing seat is 255 mm.
The length of the manipulator is the sum of the two, and the length of the manipulator is taken as L755 mm.
(2) Width B of cooling bed:
B＝Lmax+e
wherein Lmax is the maximum shearing length of the square billet, and Lmax is 6 m; e is the rest, and e is 500 mm. The width B of the pusher is 6.5 m.
(3) Billet friction force F:
47mm billet friction F:
after transformation, the length of the small square billet is generally 6m, the longest length is 6.5m, and generally three small square billets are cut simultaneously. The push rod pushes 3 billets of 6m at a time.
The length of the billet is 6m, and the quantity a1 is as follows: 3 roots of the Chinese medicinal materials. The total length of the small square billet is taken to be 6.5 m. The total weight of the small square billet on the pusher is as follows:
f mga1 ρ vga1 ρ 7.85X10-6Kg/mm3x47x47x6500x9.8x3 3314 newtons.
Taking the steel-to-steel static friction coefficient mu: 0.3. the 47mm billet friction force F1 ═ μ F ═ 0.3X3314 ═ 994 newtons.
The push head has the following weight: G330X 9.8 3234 newtons, the steel-to-steel rolling friction coefficient μ is: 0.05.
the rolling friction force of the pushing head is as follows: f2 ═ μ G ═ 0.05X3234 ═ 162 newtons.
The thrust for pushing the small square billet is as follows: f1+ F2 994+162 1156 newtons.
b.56mm billet friction force F:
after transformation, the length of the small square billet is generally 6m, the longest length is 6.5m, and generally three small square billets are cut simultaneously. The push rod pushes 3 billets of 6m at a time.
The length of the billet is 6m, and the quantity a2 is as follows: 3 roots of the Chinese medicinal materials. The total length of the small square billet is taken to be 6.5 m. The total weight of the small square billet on the pusher is as follows:
f1 mga2 ρ vga2 7.85X10-6Kg/mm3 x56x6500x9.8x3 4704 newtons.
Taking the steel-to-steel static friction coefficient mu: 0.3. then, the friction force F3 ═ μ F1 ═ 0.3X4704 ═ 1411 newtons for the 56mm billet.
The push head has the following weight: G330X 9.8 3234 newtons, the steel-to-steel rolling friction coefficient μ is: 0.05.
the rolling friction force of the pushing head is as follows: f4 ═ μ G ═ 0.05X3234 ═ 162 newtons.
The thrust for pushing the small square billet is as follows: f3+ F4 1411+162 newtons 1573.
The maximum thrust is 1573 newtons for the 47mm, 56mm billet.
(4) Selecting cylinder parameters:
the cylinder model is JB160X400, and two cylinders are adopted. The total thrust is as follows: f2 XPX pi/4 XD2,
f2 X0.5X106X3.14/4X0.082 5024 newtons, because the ratio of the arm of the small rocker arm to the arm of the large rocker arm is 1: 2, the total push rod thrust is F push-5024/2 push-2512 newtons.
(5) Steel pushing stroke L1:
the length of the manipulator is 755 mm. The stroke of the cylinder is 400mm, the ratio of the force arm of the small rocker arm to the force arm of the large rocker arm is 1: 2, the stroke of the push bench is L1-800 mm. The length of the manipulator is L755 mm.
The stroke L1 of the manipulator is greater than the length L of the manipulator
Therefore, the method comprises the following steps: the steel pushing stroke L1 meets the production requirement.
3. Soaking in water and cooling the tank:
(1) billet cooling time t:
according to the unstable heat conduction condition of the large flat wall and the constant temperature fluid, the 60mmX60mm square billet is cooled to the surface temperature of 100 ℃ from about 800 ℃ (the temperature of the small square billet after being sheared) in water, and the time required for the central temperature to be 150 ℃ is 2 min. For the 47mmX47mm square billets and 56mmX56mm square billets produced by emerging casting pipe shares company, the cooling effect can be achieved within less than 2 min. The cooling time t of the steel billet is taken as 2 min.
(2) Inclination angle alpha between chain and horizontal plane in pool:
the chain in the pool runs at a constant speed. The resultant force in the chain direction is zero. In the chain direction, there are two forces that balance: (G-ffy) sin α ═ μ N. And when the static friction force is not more than the maximum static friction force, the billet is static relative to the chain. That is, the following equation is satisfied, and the billet does not slide relatively on the chain.
(G-Ffloat) sin α ═ μ N ≦ μ 0N, N ═ G-Ffloat) cos α,
namely, (G-Ffloat) sin alpha is less than or equal to mu 0N,
(G-Ffloat) sin alpha is less than or equal to mu 0 (G-Ffloat) cos alpha,
therefore, tg α ≦ μ 0 ≦ 0.15, α ≦ 8.5 °.
The inclination alpha between the chain in the water taking pool and the horizontal plane is 7 degrees, and the production requirement is completely met.
(3) Chain running speed V1 in the pool:
the running speed of the steel dragging chain in the water pool should meet the requirement of the maximum hourly output. At present, the maximum machine time yield of our machine is 40 t/h. The time output can be greatly increased in the future, and the time output of the machine is 80 t/h. The raw material is 150mmX150mmX3060mm, the raw material is rolled into 47mmX47mmX6000mm, 1201 billets are produced in each hour, 1 group of square billets are produced in every 3 billets entering a cooling bed, the distance between the groups is 200mm, and then the row length L0 of the square billets produced in 1 hour is as follows: l0 ═ (1201 ÷ 3) X141+200X (1201 ÷ 3-1) ═ 136.5m
Then, the running speed V1 of the chain is:
V1＝L0/t＝136.5/60＝2.3(m/min)
(4) effective length of immersion tank L2:
the shortest effective length L2 of the soaking pool is equal to the running speed V1 of the chain multiplied by the soaking time t of the steel, and L2 is V1 multiplied by t is 2.3 multiplied by 2.6 m.
(5) Chain running speed V1' in the pool:
the raw material is 150mmX150mmX3060mm, rolled into 56mmX56mmX6000mm, the machine hour yield is 80t/h, and 929 counts are produced per hour. When the square billets enter the cooling bed, 1 group of square billets is formed every 3 pieces of square billets, the distance between the groups is 200mm, and the row length L0 of the square billets produced in 1h is as follows: l0 ═ (929 ÷ 3) X168+200X (929 ÷ 3-1) ═ 113.8m
Then, the running speed V1' of the chain is:
V1′＝L0/t＝113.8/60＝1.9(m/min)
(6) effective length of immersion basin L2':
the shortest effective length L2 ' of the soaking pool is equal to the running speed V1 ' of the chain multiplied by the soaking time t of the steel, and L2 ═ V1 ' × t ═ 1.9 × 2 ═ 3.8 m.
Compared with a 56mm square billet, the 47mm square billet has the advantage that the effective length of the water taking and soaking pool is 4.6m, so that the production requirements of the two square billets can be met. The length of the billet was 6.5 m. Therefore, the width of the cooling bed was 7 m.
The utility model discloses in, the theory of operation, the hot shearing is sheared the back, and on the hot billet in groups was imported the pusher 1 through the roll table, push away the hot billet directly and push soaking cooling bath 2 on the roll table of pusher 1, the water logging in the pond exceeded steel billet upper surface 200mm, advanced a period in aqueous and cooled off fast, shifted out the steel billet from the aquatic through conveying chain 7, at this moment the surface temperature of steel billet falls to below 100 ℃, reached complete refrigerated purpose. Finally, the steel billet is sent to the collecting tank 3 by the chain 7 through the chain 7.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. Soaking formula square billet cold bed, including pusher (1), its characterized in that, one side of pusher (1) is equipped with places soaking cooling tank (2) subaerial, one side that pusher (1) was kept away from in soaking cooling tank (2) is equipped with places collecting vat (3) subaerial, the roll table of pusher (1) extends to in soaking cooling tank (2).
2. The soaking type square billet cooling bed according to claim 1, wherein a first support (4) placed on the ground is arranged between the soaking cooling tank (2) and the collecting tank (3), a second support (5) is fixedly installed on one side, close to the pusher (1), of the inner wall of the bottom of the soaking cooling tank (2), driving wheels (6) are rotatably installed on the tops of the first support (4) and the second support (5), and the two driving wheels (6) are sleeved with the same chain (7).
3. The flooded square billet cooling bed according to claim 2, characterised in that the chain (7) is arranged obliquely and the chain (7) is located in the flooded cooling bath (2).
4. The soaking type square billet cooling bed according to claim 1, characterized in that three steel moving chain racks (8) are fixedly arranged on the inner wall of the bottom side of the soaking cooling tank (2) at equal intervals, and the tops of the three steel moving chain racks (8) are all contacted with the chain (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922361956.5U CN211757638U (en) | 2019-12-25 | 2019-12-25 | Water-immersed square billet cooling bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922361956.5U CN211757638U (en) | 2019-12-25 | 2019-12-25 | Water-immersed square billet cooling bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211757638U true CN211757638U (en) | 2020-10-27 |
Family
ID=72979418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922361956.5U Active CN211757638U (en) | 2019-12-25 | 2019-12-25 | Water-immersed square billet cooling bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211757638U (en) |
-
2019
- 2019-12-25 CN CN201922361956.5U patent/CN211757638U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203725731U (en) | Multi-station heated-mold-method centrifuge production system | |
| CN103042189A (en) | Hammer-tool de-burring machine for continuous cast rectangular blanks | |
| CN100415416C (en) | On-line mould-repairing method and apparatus for roller-type wedge transverse rolling machine | |
| CN211757638U (en) | Water-immersed square billet cooling bed | |
| CN212384492U (en) | Wind-powered electricity generation crab-bolt auxiliary production device | |
| CN202804124U (en) | Bur removing machine for square and round billets | |
| CN202570736U (en) | Steel plate cutting recovery device on hot tandem rolling production line | |
| CN216542694U (en) | Circular tube feeding device and feeding equipment for polishing machine using same | |
| CN102417963A (en) | Sedan stabilizer bar-quenching mechanism | |
| CN216107079U (en) | Quenching furnace sealing cover plate | |
| CN101585067A (en) | Rolling pulley machine | |
| CN104525565A (en) | Flexible production device for directly charging high-temperature casting blanks in sequence | |
| CN100447259C (en) | Automatically controlled large saw blade heat treatment device | |
| CN215142441U (en) | Environment-friendly surface machining device for aluminum production | |
| CN203030857U (en) | Hammer cutter type continuous casting rectangular blank deburring machine | |
| CN204262052U (en) | Realize high temperature strand direct shove charge flexible production plant according to the order of sequence | |
| CN211005536U (en) | Quenching cooling device for high-speed steel roll production | |
| CN210305043U (en) | Small-caliber thin-wall double-mandrel two-roll restraint continuous rolling unit | |
| CN203638669U (en) | Chain conveying mechanism for section steel transferring | |
| CN202359168U (en) | Quenching mechanism for car stabilizer bar | |
| CN110576054A (en) | Bar material end aligning device for steel rolling | |
| CN201070637Y (en) | Roll change lifting device of rough rolling edger mill | |
| CN210231019U (en) | Saw blade blank production line | |
| CN210937046U (en) | Off-line collecting device for stepping cooling bed of bloom continuous casting machine | |
| CN205774648U (en) | A kind of desulfurizing iron device for removing slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |