CN208575103U - The step cooling bed equipment of unlike material flat hot rolled bar mixed production - Google Patents

The step cooling bed equipment of unlike material flat hot rolled bar mixed production Download PDF

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Publication number
CN208575103U
CN208575103U CN201821147320.XU CN201821147320U CN208575103U CN 208575103 U CN208575103 U CN 208575103U CN 201821147320 U CN201821147320 U CN 201821147320U CN 208575103 U CN208575103 U CN 208575103U
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steel
cooling
straightening plate
hot rolled
lifting
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智传锁
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HANDAN ZHONGWEI MACHINERY CO Ltd
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HANDAN ZHONGWEI MACHINERY CO Ltd
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Abstract

Disclosed by the utility model is the step cooling bed equipment of unlike material flat hot rolled bar mixed production, including input unit, attemperator, cold bed body, unloading steel plant, runout table and matched electro-hydraulic automatic control system.Input unit is provided with approach table, charging gear and cooling straightening plate;Cold bed body one end is overlapped on cooling straightening plate arrival end, and the other end overlaps unloading steel plant material receiving end.It is provided in cold bed body and quickly moves steel device, quickly moved steel device and be arranged between cooling straightening plate outlet end and unloading steel plant material receiving end;It quickly moves on steel device to be provided with and moves steel trolley, move steel trolley along the cold bed body overall with, one group is arranged at a certain distance.The straight carbon steel of different shear temperatures and steel alloy mixed production are reduced the equipment investment cost of production line, the product variety range of expanding production line by the step cooling bed equipment that this programme provides a kind of adaptation unlike material flat hot rolled bar mixed production.

Description

The step cooling bed equipment of unlike material flat hot rolled bar mixed production
Technical field
The utility model belongs to steel making equipment field, and in particular to be unlike material flat hot rolled bar mixed production Step cooling bed equipment.
Background technique
Flat hot rolled bar is as a kind of steel material, and material is generally with ordinary carbon steel, Fine Steel Casting iron or superior alloy steel Based on, it is widely used in the fields such as machine-building, building decoration and Vehicle Engineering, the technological process of production mainly adds including steel billet Heat, milling train hot rolling and finished product are cooling to collect three regions,
The cooling collecting zone of finished product mainly configures flying shear, step cooling bed and the big equipment of cold shears three.Flying shear divides finished product band steel It is cut into the band steel of multiple lengths, is transported to step cooling bed using roller-way.Step cooling bed mainly by approach table, unloading steel plant, rectify The part such as straight panel, sound rack gear and main transmission, alignment roller table, charging gear and runout table forms.It can by root by high temperature at It is defeated through roller-way to accumulate the bundled band steel of low temperature by the movement such as sending steel, unloading steel, aligning, stepping cooling, alignment, upper steel for product band steel It send to cold shears, cold shears is again by the nibbling shear of multiple length band steel at scale band steel.
For the band steel of different steel grades, also not only identical and difference is very big for the temperature of cold shears shearing.Straight carbon steel material it is flat Steel, low temperature (100 DEG C or less) cutting performance is good, cuts off the defects of straight and even nothing is burst apart, and cools effect to the major requirement of cold bed Fruit will get well, and be that cold bed length will be grown accordingly;The band steel of alloy steel, since its Property & Structure is different from straight carbon steel, it is desirable that Shear temperature is apparently higher than straight carbon steel, reaches 300~Between 500 DEG C, once its too low cutting performance of temperature is deteriorated, notch is caused Section bursts apart, and to get well to the main Seeking Truth heat preservation slow cooling effect of cold bed, corresponding cold bed length wants short.
With the rapid development of our country's economy, the mating material of Vehicle Engineering is the demand of the spring flat steel of high duty alloy steel grade Amount increases year by year, and representative steel grade is 60Si2Mn.
It is in place of the deficiencies in the prior art, the band steel production line either based on straight carbon steel kind, or with steel alloy Band steel production line based on kind is difficult to realize the band steel mixed production of unlike material, causes the flexibility of production line poor, enterprise Product variety is less, and the adaptability to changes in market is not strong, and it is many unfavorable that Business Economic Benefit is difficult to improve etc..
Utility model content
The utility model aim is to provide a kind of step cooling bed equipment of unlike material flat hot rolled bar mixed production, can incite somebody to action The flat hot rolled bar mixed production of unlike material reduces the equipment investment expense of production line.
To achieve the goals above, the technical solution adopted in the utility model is:
The step cooling bed equipment of unlike material flat hot rolled bar mixed production, including input unit, attemperator, cold bed sheet Body, unloading steel plant, runout table and matched electro-hydraulic automatic control system.The input unit be provided with input track, on Steel device and cooling straightening plate, cold bed body one end are overlapped on cooling straightening plate arrival end other end overlap joint unloading steel plant splicing End is provided in the cold bed body and quickly moves steel device, the quick shifting steel device be arranged in cooling straightening plate outlet end with Between unloading steel plant material receiving end;
It is provided on the quick shifting steel device and moves steel trolley, the shifting steel trolley is along the cold bed body overall with range It is interior, one group is arranged at a certain distance;
The attemperator is arranged above the input unit, and the attemperator includes insulation cover and alignment pin, The insulation cover is arranged along cold bed width direction overall with, and the insulation cover can be rotated up and down fortune by axle center of the alignment pin It is dynamic.
Further, the quick shifting steel device includes lifting part and running part, and the lifting part is provided with liter Descending liquid cylinder pressure, leading truck and lifting device, lifting hydraulic cylinder provide power and drive leading truck raising and lowering by lifting device;
The running part includes transmission device and transmission parts, and the transmission device pulls institute by transmission parts chain It states and moves the work forward or backward movement of steel trolley.
Further, the lifting device includes lifting synchronizing shaft and lifting linking member mechanism, the lifting linking member mechanism peace Mounted in the leading truck in the following, the lifting synchronizing shaft provides power by lifting hydraulic cylinder, controlled by lifting linking member mechanism Leading truck raising and lowering.
Further, the transmission parts include horizontal pendulum moving frame, vertical lift frame and chain wheel drive long axis, the sprocket wheel Long axis is driven to be arranged in leading truck in the following, the transmission device passes through horizontal pendulum moving frame, vertical lift frame and chain wheel drive long axis It works at the same time control and moves steel moving of car.
Further, the cold bed body includes scale item and carry-over bar, and the carry-over bar includes long carry-over bar and short dynamic Rack gear, static rack include long static rack and short static rack.
Further, the shifting steel trolley is arranged between the static rack exit and unloading steel plant material receiving end, described Steel trolley is moved along cold bed bed surface width range, is arranged one group every 1200mm.
Further, in approach table stent outer, the insulation cover is arranged in the cooling for the attemperator setting Above straightening plate and cold bed bed surface inlet.
Further, the approach table roll surface and the cooling straightening plate angle are 12 °, are slid convenient for band steel along inclined-plane Into cooling straightening plate tooth socket.
Further, the cooling straightening plate is a whole heat resistant iron castings, and top processes and carry-over bar and quiet tooth The same tooth form of item, the cooling straightening plate are mounted on cold bed bed surface inlet, and described every group cooling straightening plate is divided into cooling rectify Block and block after cooling straightening plate before straight panel, two adjacent groups are provided with gap between cooling straightening plate side, for arranging carry-over bar.
In conclusion the utility model has the following beneficial effects: to provide a kind of adaptation unlike material flat hot rolled bar conllinear The step cooling bed equipment of production, by the straight carbon steel of different shear temperatures and steel alloy mixed production, the equipment for reducing production line is thrown Provide cost, the product variety range of expanding production line.
Detailed description of the invention
Fig. 1 is the utility model step cooling bed equipment cross-section diagram;
Fig. 2 is attemperator figure in the utility model step cooling bed equipment;
Fig. 3 is input unit figure in the utility model step cooling bed equipment;
Fig. 4 is cold bed body figure in the utility model step cooling bed equipment
Fig. 5 is that steel device figure is quickly moved in the utility model step cooling bed equipment.
In figure, 21, insulation cover;22, alignment pin;
31, approach table;32, block before cooling straightening plate;Block after 33 cooling straightening plates;34, elevating apron plate synchronizing shaft;35, Hydraulic cylinder;36, skirtboard;37, elevating apron plate pull rod
41, carry-over bar;42, static rack;43 front baffles;44;Transmission shaft component;45, afterframe;
51, steel trolley is moved;52, sprocket wheel and chain device;53 leading trucks;54 lifting linking member mechanisms;
55, chain wheel drive long axis;56, transmission device;57, horizontal pendulum moving frame;58, it is vertically moved up or down frame;59, raise-lower hydraulic Cylinder;60, swing arm;61, mandril;62 lifting synchronizing shafts;63, pull rod;64, bracket;65, fixed cross beam.
Specific embodiment
The utility model patent is further described below in conjunction with attached drawing.
As shown in Figure 1, step cooling bed equipment mainly include approach table, attemperator, charging gear, cooling straightening plate, Cold bed body quickly moves steel device, unloading steel plant, runout table and matched electro-hydraulic automatic control system etc..Cold bed body One end is overlapped on cooling straightening plate arrival end, and the other end overlaps unloading steel plant material receiving end.It is additionally provided in cold bed body quickly Steel device is moved, steel device is quickly moved and is arranged between cooling straightening plate outlet end and unloading steel plant material receiving end.
Attemperator setting is square on the input device.As shown in Fig. 2, be the attemperator of step cooling bed, the heat preservation dress It sets including insulation cover 21 and alignment pin 22, the insulation cover 21 is that axle center can be rotated up and down rotation with the alignment pin 22. Insulation cover 21 is mounted on the outside of 31 roll surface of approach table, can be risen or be fallen insulation cover 21 using workshop crown block hook, fall Position is substantially positioned in above cooling straightening plate and cold bed bed surface inlet, keeps the temperature slow cooling for steel alloy, insulation cover 21 is along cold Bed width direction overall with setting.
As shown in figure 3, input unit includes that approach table 31, cooling straightening plate and charging gear, approach table 31 are used to Band steel after conveying Double Dimension Flying Shears shearing, for the ease of unloading steel, 31 roll surface of approach table and cooling straightening plate angle are 12 °, on Steel device is used to by the band steel braking deceleration in approach table 31 and be discharged in first serrated slot of cooling straightening plate, it is described on Steel device includes elevating apron plate synchronizing shaft 34, hydraulic cylinder 35, skirtboard 36 and elevating apron plate pull rod 37, wherein elevating apron plate synchronizing shaft 34 are equipped with connecting rod, and connecting rod is hinged with the piston rod of hydraulic cylinder 35 and elevating apron plate pull rod 37 respectively by pin shaft;Skirtboard 36 is hinged by pin shaft with elevating apron plate pull rod 37.When the piston rod stretching of hydraulic cylinder 35, to rise by hinged shaft and connecting rod It drops skirtboard synchronizing shaft 34 to rotate, then is rotated by connecting rod so that elevating apron plate pull rod 37 drives skirtboard 36 to move up and down.Skirtboard 36 It moves downward and realizes band steel retarding braking;Skirtboard 36 is moved upwards for band steel to be discharged in first tooth socket of cooling straightening plate and be completed Steel.Cooling and aligning of the cooling straightening plate for band steel, it is a whole heat resistant iron castings, and cooling straightening plate top processes Tooth form as carry-over bar and static rack, every group of cooling straightening plate are divided into block 32 and block after cooling straightening plate before cooling straightening plate 33, it is mounted on cold bed bed surface inlet, two adjacent groups are provided with gap between side, for arranging carry-over bar.
As shown in figure 4, cold bed body mainly includes carry-over bar 41, static rack 42 and transmission shaft component 44, the device is main Steel is moved with stepping for band steel cooling.Cold bed body uses Modular Structure Design, with 6000mm width for a structural unit, edge Cold bed width direction is arranged symmetrically, and the transmission shaft between unit is connected by shaft coupling.Static rack 42 divides for long static rack and short Static rack, is used to support the mobile band steel of stepping, and static rack 42 enters along mono- group of overall with setting of cold bed width direction 6000mm, bed surface The adjacent short static rack interval 600mm of mouth, bed surface export adjacent long static rack interval 1200mm, i.e., set according to preceding close rear thin principle Meter.42 top of static rack is equipped with working On The Sawteeth Shape, is used to support the mobile band steel of stepping, the every stepping of band steel is primary, just from a tooth Shape is moved to adjacent next tooth form.
Carry-over bar 41 is also classified into long carry-over bar and short carry-over bar, and top is equipped with working On The Sawteeth Shape identical with static rack 42, uses Steel is moved in stepping of the band steel on bed surface.All carry-over bars 41 are all connected on frame by bracket, and frame includes front baffle 43 With afterframe 45, cooling straightening plate and the adjacent short carry-over bar interval 600mm of bed surface entrance, bed surface export adjacent long carry-over bar interval 1200mm, i.e., also according to preceding close rear thin principle design.Every 6000mm is arranged to one in front and one in back two framing, and all carry-over bars are all logical It crosses bracket to be connected on frame, every framing lower part is set there are four deflector roll, and each frame is led to by four cams on two root long axis Guide wheel support is crossed, driving motor rotates four root long axis at the same speed in the same direction, and the carry-over bar on frame just rises in vertical plane And decline;The band steel on static rack is held up when rising, by the mobile step pitch of band steel when decline, is slipped to the static rack tooth of front In slot.
It is arranged in short static rack to the gap between unloading steel plant material receiving end as shown in figure 5, quickly moving steel device, is used for Alloy band steel quickly move steel realize slow cooling, quickly move steel device will along cold bed bed surface overall with, every 1200mm spacing, if It sets one group and quickly moves steel trolley.
Quickly moving steel device includes lifting part and running part.Lifting part drives swing arm 60 to make by lifting hydraulic cylinder 59 The rotation of synchronizing shaft 62 must be gone up and down, to drive the small swing arm being connected with lifting synchronizing shaft 62 that mandril 61 is driven to move up and down. 64 one end of bracket is fixed on the other end on fixed cross beam 65 and connect with leading truck 53, and mandril 61 is being drawn by lifting linking member mechanism 54 Bar 63 act under respectively using B, F, P and V hinged shaft be fulcrum rotate, then by bracket 64 drive leading truck 53 in shifting steel trolley 51, Sprocket wheel and chain device 52, chain wheel drive long axis 55, vertical lift 58 raising and lowering of frame, and horizontal pendulum moving frame 57 is then around transmission Device central axis is swung up and down, it is therefore an objective to chain length be maintained to remain unchanged.
The transmission device 56 of running part is mounted on cold bed pit base, and moving steel trolley 51 is by horizontal pendulum moving frame 57, the sprocket wheel in horizontal pendulum moving frame 57 and chain, vertical lift frame 58, the sprocket wheel on vertical lift frame 58 and chain, sprocket wheel drive Dynamic long axis 55 and sprocket wheel on chain wheel drive long axis 55 and chain work at the same time to control and move steel trolley 51 and move.Sprocket wheel drives Dynamic long axis 55 is mounted on leading truck 53 in the following, being connected by sprocket wheel and chain device 52 with steel trolley 51 is moved.Driving device is by becoming Frequency motor drive, motor are just shifting steel trolley 51 and are moving ahead;It is retreated conversely, moving steel trolley 51.It is entire to move the installation of 51 component of steel trolley In leading truck 53, leading truck 53 is connected by lifting linking member mechanism 54, pull rod 63, mandril 61 with lifting synchronizing shaft 62.Lifting Hydraulic cylinder 59 stretches out, and makes leading truck 53 together with shifting by lifting synchronizing shaft 62, mandril 61, pull rod 63, lifting linking member mechanism 54 Steel trolley 51 rises together, holds up and falls in band steel on static rack 42, starts its dynamic transmission device 56, moves steel trolley 51 from connecing The Forward of steel position, after steel position is unloaded in arrival, lifting hydraulic cylinder 59 is retracted, and is moved steel trolley 51 and is declined, and band steel is placed into and unloads steel dress It sets on material receiving end;Right rear steel moving trolley 51 returns to again connects steel position, prepares next circulation and moves steel operation.
Step cooling bed equipment is started according to two kinds of production models of straight carbon steel and steel alloy, for the flat of different steel grades Steel, also not only identical and difference is very big for the temperature of cold shears shearing.The band steel of straight carbon steel material, (100 DEG C or less) shearing property of low temperature Can be good, the defects of straight and even nothing is burst apart is cut off, it is cold bed length accordingly that the major requirement to cold bed, which is that the effect that cools will be got well, It grows.So when production line produces straight carbon steel band steel, it is desirable that insulation cover 21 rises, and moves steel trolley 51 and drops to low level and protect Hold halted state.Using the step motion of cold bed bed surface carry-over bar 41, such band steel is in short static rack exit and unloading steel plant Between, steel can only be moved by dynamic and static rack gear stepping, meet the requirement of the band steel cooling and aligning of straight carbon steel kind.
The production process of specific straight carbon steel is as follows: first finished product band steel is transported to charging gear by approach table 31, Thermometal detector test herein is placed, control signal is issued, driving hydraulic cylinder rising declines elevating apron plate, band steel is unloaded Onto brake plate, the band steel to run out of steam is by the friction eceleration braking between skirtboard side;When band steel is last close to approach table 31 When end, thermometal detector test herein is placed, issues control signal, driving hydraulic cylinder decline makes on elevating apron plate device It rises after unloading first band steel cunning to cooling straightening plate in 33 first slots of block;Start 41 driving motor of carry-over bar of cold bed, moves Rack gear 41 rises, and first band steel is held up after moving forward a tooth pitch, and band steel is declined to block after being slipped to cooling straightening plate In 33 second slots.Second finished product band steel, repeats the movement of first finished product band steel, and is slipped to block 33 after cooling straightening plate First slot in;Starting 41 driving motor of cold bed carry-over bar, carry-over bar 41 rises, first, second band steel is held up together, After moving forward a tooth pitch, first band steel decline is slipped in third slot, second band steel decline is slipped to second In a slot, the movement of front is constantly repeated, steel is unloaded by unloading steel plant completion until first band steel moves on at unloading steel plant.
The band steel of alloy steel, since its Property & Structure is different from straight carbon steel, it is desirable that shear temperature is apparently higher than general carbon Steel reaches between 300~500 DEG C, once its too low cutting performance of temperature is deteriorated, causes notch section to burst apart, to the master of cold bed It is required that being that heat preservation slow cooling effect will be got well, corresponding cold bed length wants short.When production line produces steel alloy band steel, it is desirable that insulation cover 21 fall, and move steel trolley 51 and are raised up to a high position, and You Yigang trolley 51 is completed quickly to move steel, meet the band steel guarantor of alloy steel grade The requirement of mild slow cooling.
Steel alloy production process is as follows: utilizing workshop overhead traveling crane, attemperator is fallen, insulation cover 21 falls on cooling straightening plate With bed surface entrance top, and alignment pin 22 is plugged, the band steel rolled out is similar to general by approach table 31 and charging gear Carbon band steel production model is fallen on after cooling straightening plate one by one in first serrated slot of block 33;A band steel is often shut out, The starting of cold bed carry-over bar driving motor is primary, and carry-over bar, which rises just to hold up band steel, moves forward a tooth pitch.
As soon as every rolling band steel constantly repeats above-mentioned action process, 41 one step pitch of every movement of carry-over bar, band steel is in bed A just mobile tooth pitch in face align in slow cooling gradually full of band steel on rach slot, will be in bed surface edge position always Band steel is transplanted on steel device top position.
The shifting steel trolley 51 of steel position is connect below bed surface, lifting hydraulic cylinder 59 stretches out, and passes through synchronizing shaft, lifting lever Trolley supporting plate is risen, i.e., is held up the band steel of certain amount radical;Starting moves 51 driving motor of steel trolley and rotates forward, and passes through sprocket wheel And chain device 52 pulls shifting steel trolley 51 quickly to move ahead, steel position is unloaded in arrival;Lifting hydraulic cylinder 59 retracts, and band steel is fallen on and is unloaded Above steel device, moves steel trolley 51 and complete to move steel;Motor reversal, motor driven are moved steel trolley 51 and are quickly returned, and reach shifting steel and connect Below steel position, next group of band steel is waited quickly to send steel.
This specific embodiment is only the explanation to utility model patent, is not limitations of the present invention, this Field technical staff can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, But as long as within the protection scope of the present utility model all by the protection of Patent Law.

Claims (9)

1. the step cooling bed equipment of unlike material flat hot rolled bar mixed production, including input unit, attemperator, cold bed body, Unloading steel plant, runout table and matched electro-hydraulic automatic control system, the input unit be provided with approach table (31), on Steel device and cooling straightening plate, cold bed body one end are overlapped on cooling straightening plate arrival end, and the other end overlaps unloading steel plant splicing End, it is characterised in that: be provided in the cold bed body and quickly move steel device, the quick shifting steel device is arranged in cooling aligning Between plate outlet end and unloading steel plant material receiving end;
It is provided on the quick shifting steel device and moves steel trolley (51), the shifting steel trolley (51) is along the cold bed body overall with model In enclosing, one group is arranged at a certain distance;
The attemperator is arranged above the input unit, and the attemperator includes insulation cover (21) and alignment pin (22), the insulation cover (21) is arranged along cold bed width direction overall with, and the insulation cover (21) is with the alignment pin (22) Axle center can be rotated up and down movement.
2. the step cooling bed equipment of unlike material flat hot rolled bar mixed production according to claim 1, it is characterised in that: institute Stating and quickly moving steel device includes lifting part and running part;
The lifting part is provided with lifting hydraulic cylinder (59), leading truck (53) and lifting device, and lifting hydraulic cylinder (59) provides Power drives leading truck (53) raising and lowering by lifting device;
The running part includes transmission device (56) and transmission parts, and the transmission device (56) is drawn by transmission parts chain The shifting steel trolley (51) is moved to make to move forward or back movement.
3. the step cooling bed equipment of unlike material flat hot rolled bar mixed production according to claim 2, it is characterised in that: institute Stating lifting device includes lifting synchronizing shaft (62) and lifting linking member mechanism (54), and the lifting linking member mechanism (54) is mounted on described Leading truck (53) is in the following, the lifting synchronizing shaft (62) passes through lifting linking member mechanism by lifting hydraulic cylinder (59) offer power (54) leading truck (53) raising and lowering is controlled.
4. the step cooling bed equipment of unlike material flat hot rolled bar mixed production according to claim 3, it is characterised in that: institute Stating transmission parts includes that horizontal pendulum moving frame (57), vertical lift frame (58) and chain wheel drive long axis (55), the chain wheel drive are long Axis (55) be arranged in leading truck (53) in the following, the transmission device (56) by horizontal pendulum moving frame (57), vertical lift frame (58), And chain wheel drive long axis (55) works at the same time control and moves steel trolley (51) movement.
5. the step cooling bed equipment of unlike material flat hot rolled bar mixed production according to claim 1, it is characterised in that: described Cold bed body includes quiet ruler item (42) and carry-over bar (41), and the carry-over bar (41) includes long carry-over bar and short carry-over bar, quiet tooth Item (42) includes long static rack and short static rack.
6. the step cooling bed equipment of unlike material flat hot rolled bar mixed production according to claim 5, it is characterised in that: institute It states and moves steel trolley (51) setting between the static rack (42) exit and unloading steel plant material receiving end, the shifting steel trolley (51) Along cold bed bed surface width range, it is arranged one group every 1200mm.
7. the step cooling bed equipment of unlike material flat hot rolled bar mixed production according to claim 1, it is characterised in that: institute Attemperator setting is stated in approach table (31) stent outer, the insulation cover (21) is arranged in the cooling straightening plate and cold bed Above bed surface inlet.
8. the step cooling bed equipment of unlike material flat hot rolled bar mixed production according to claim 1, it is characterised in that: institute Stating approach table (31) roll surface and the cooling straightening plate angle is 12 °.
9. the step cooling bed equipment of unlike material flat hot rolled bar mixed production according to claim 1, it is characterised in that: institute Stating cooling straightening plate is a whole heat resistant iron castings, and top processes the tooth form as carry-over bar and static rack, described cold But straightening plate is mounted on cold bed bed surface inlet, and described every group cooling straightening plate is divided into before cooling straightening plate block (32) and cooling rectifys Block (33) after straight panel, two adjacent groups are provided with gap between cooling straightening plate side, for arranging carry-over bar (41).
CN201821147320.XU 2018-07-19 2018-07-19 The step cooling bed equipment of unlike material flat hot rolled bar mixed production Active CN208575103U (en)

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CN201821147320.XU CN208575103U (en) 2018-07-19 2018-07-19 The step cooling bed equipment of unlike material flat hot rolled bar mixed production

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746219A (en) * 2018-07-19 2018-11-06 邯郸中威机械有限公司 The step cooling bed equipment and production method of unlike material flat hot rolled bar mixed production
CN113333509A (en) * 2021-06-29 2021-09-03 中天钢铁集团有限公司 Bar straightening device and operation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746219A (en) * 2018-07-19 2018-11-06 邯郸中威机械有限公司 The step cooling bed equipment and production method of unlike material flat hot rolled bar mixed production
CN113333509A (en) * 2021-06-29 2021-09-03 中天钢铁集团有限公司 Bar straightening device and operation method

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