CN104826877B - A kind of two-sided guide groove in wind water cooling roller slow cooling section - Google Patents
A kind of two-sided guide groove in wind water cooling roller slow cooling section Download PDFInfo
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- CN104826877B CN104826877B CN201510209700.6A CN201510209700A CN104826877B CN 104826877 B CN104826877 B CN 104826877B CN 201510209700 A CN201510209700 A CN 201510209700A CN 104826877 B CN104826877 B CN 104826877B
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- guide groove
- cooling water
- water channel
- gas jets
- groove body
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Abstract
The present invention provides a kind of two-sided guide groove in wind water cooling roller slow cooling section, it is related to metallurgical steel rolling field, including guide groove body, convolution cooling water channel is provided with guide groove body, the guide groove body is made up of lower guide channel body and upper guide groove body, the convolution cooling water channel is made up of cooling water channel A and cooling water channel B, and the cooling water channel A is opened in lower guide channel body, and the cooling water channel B is opened in upper guide groove body；Also include gas jets, gas jets are involuted by lower gas jets and upper gas jets, and lower guide roll is provided with lower gas jets, deflector roll is provided with upper gas jets.The present invention on guide groove body by setting convolution cooling water channel to reduce the temperature of guide groove body；The present invention also by setting deflector roll, avoids jitter phenomenon and the resistance of motion in rolled piece running, makes workpiece motion s easily, steadily；Rolled piece is cooled down by air-flow, while gas generates to the motive force of rolled piece operation and the rolled piece on deflector roll is run steadily, easily.
Description
Technical field
The present invention relates to metallurgical steel rolling field, more particularly to a kind of two-sided guide groove in wind water cooling roller slow cooling section.
Background technology
Two-sided guide groove is indispensable important process element in cooling technique on high-speed wire production line.At present at home
On outer high-speed wire production line using two-sided guide groove technology still rest in traditional design concept.
As shown in Figure 1：
1：Body
On whole piece roll line, the slow cooling section of dozens of guide groove composition is separately installed between cooling device and before Laying head
(recover section).According to existing guide groove technical concept, guide groove functions only as the guide effect of workpiece motion s.With high-performance, high-strength
Alloy shock resisting steel production development is spent, existing guide groove technical concept can not meet wanting for modern steel rolling cooling technique technology development
Ask.Because：
Cooling technique and phase transformation theory：
Cooling technique is to be passed through cooling water to cooling water tank, and rolled piece is cooled into theoretical phase transition temperature rapidly, and use is most short
The austenite that time obtains optimal sorbite and has anticipation supercooling to become, the most important phase transformation of whole cooling procedures is completed with this
Prepare.Rolled piece phase transition temperature technique is obtained to carry out in one section of water cooling, one section of air cooling program.Rolled piece surface is made by water cooling
Temperature declines, and in slow cooling section, (recover section) allows rolled piece surface temperature to go up and then water cooling again, rolled piece center portion temperature is continuously declined,
(air-cooled line) realizes isothermal transformation in air cooling.
Cooling technique provides necessary phase transition temperature for phase transformation, is the important prerequisite for improving metal structure mechanical property.Reason
Tissue obtained by the phase transition temperature thought is close with the tissue obtained by patenting.Rolled piece goes out cold by water cooling area immediately after roller
But phase transition temperature is arrived, now, the effect for processing hardening is partly retained, and the austenite crystal boundary being broken is into pearly-lustre during phase transformation
Body and ferritic crystallization nuclei, so that pearlite and ferrite be not thick.Hereafter cooling velocity is slowed down, make it similar etc.
Temperature transformation, so as to obtain sorbite, residual ferrite and lamellar pearlite tissue.
The metal structure that rational phase transition temperature is obtained is between patenting and air normalized structure.Removed in tissue
Outside pearlite, also containing a small amount of ferrite and most of sorbite.When phosphorus content increase, ferritic content declines and rope
The increase of family name's body content.For hypo eutectoid carbon steel, ferritic structure is fine and smooth, and plasticity is good.For high-carbon steel, avoid producing netted carbonization
Thing structure, keep good mechanical performance and impact flexibility.
In cooling technique, the function that guide groove is undertaken more importantly rises in addition to the correctly safe operation of guiding rolled piece
The center portion temperature of rolled piece obtains effectively transmitting rapidly, carefully to the progress of rolled piece surface by guide groove within the unit interval after to water cooling
Change crystalline particle, eliminate the effect of internal stress.Under rolled piece is obtained in control range by the water cooling area surface temperature in each stage
Drop, and rolled piece center portion temperature is appointed so in the condition of high temperature, it is necessary to allow center portion temperature rapid to surface within the unit interval of slow cooling section
Transmission enables surface temperature fully to go up, then rolled piece center portion temperature is obtained effectively continuous decline in control range after water cooling,
Rational phase transition temperature and the metal structure after phase transformation between patenting and air normalizing are obtained with this, protect product
Good mechanical performance and impact flexibility are held, effectively improves the mechanical property of product.
1.1 in existing guide groove technology, and temperature is higher than 950 ° of rolled piece when passing through guide groove in the state of continuous rolling, by
In the effect of heat transfer, substantial amounts of heat retention guide groove temperature is intended to rolled piece temperature on guide groove (guide groove temperature is by the heart
Portion is outwards gradually reduced).The condition of high temperature of guide groove center portion hinders absorption of the guide groove body to rolled piece surface temperature and causes rolled piece
Center portion temperature can not be transmitted rapidly to surface, when because rolled piece surface temperature cannot go up rapidly and causing the rolled piece to cool down again
Center portion temperature cannot effectively decline.Influenceed by existing guide groove technical concept, many steel rolling production-lines only emphasize merely water
Cold section of cooling capacity and have ignored the meaning of slow cooling recover section, the Design of length of slow cooling recover section it is too short, rolled piece is passing through
Center portion temperature cannot rapidly, effectively go up within the unit interval during slow cooling section, constrain elimination, the crystallization of material internal stress
The refinement of grain and the raising of product physical property.
1.2：After rolled piece enters guide groove, run in the state of ＞ 65M/S speed.The motion of rolled piece is in the form of jitter motion
Objective reality, so inevitably producing friction with guide groove guiding hole wall and causing product surface damage (also referred to as to draw
Wound).The higher product of surface quality requirements is especially produced, the friction phenomenon in motion, which can not reach, ensures product surface quality
It is required that.
1.3：Due to the running status of rolled piece shake and inevitably with the generation friction of guide groove bullport, cause to increase
The resistance of motion in rolled piece running and produce piling of steel accident.
1.4：Bullport can not use after bullport abrasion because friction easily produces abrasion and cause entirety to scrap, increase
Add production cost.
The content of the invention
It is an object of the invention to provide a kind of two-sided guide groove in wind water cooling roller slow cooling section, asked with solving above-mentioned technology
Topic.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of two-sided guide groove in wind water cooling roller slow cooling section, it is characterised in that：Including guide groove body, set on guide groove body
Be equipped with convolution cooling water channel, the guide groove body is made up of lower guide channel body and upper guide groove body, it is described convolution cooling water channel by
Cooling water channel A and cooling water channel B is formed, and the cooling water channel A is opened in lower guide channel body, and the cooling water channel B is opened in
In upper guide groove body, the left end of the cooling water channel A and cooling water channel B is respectively arranged with the first Luo Saikong, in the first Luo Saikong
The first Luo Sai is provided with, the right-hand member of the cooling water channel A and cooling water channel B are respectively arranged with the second Luo Saikong, the second Luo Saikong
The second Luo Sai is inside provided with, the cooling water channel A connects composition convolution cooling water channel with cooling water channel B right-hand member；
Also include gas jets, gas jets are bolted with guide groove body, and the gas jets are by lower gas jets and upper gas
Nozzle is involuted, and lower guide roll is provided with the lower gas jets, deflector roll, the lower guide roll are provided with the upper gas jets
Guide groove both sides are oppositely arranged on upper deflector roll and form a pair of deflector roll cooperatings, are provided with the roll surface of lower guide roll and upper deflector roll
Deflector roll pass, deflector roll pass are the V-groove that angle is 120 °.
The lower guide roll is arranged in lower gas jets by eccentric shaft and eccentric bushing, and the upper deflector roll is by eccentric shaft and partially
Heart set is arranged in upper gas jets.
Taper air-jet channel is provided with the gas jets.
The technology of the present invention is provided with back according to the theory required for Water cooling technique and phase transformation theory on guide groove body
Cooling water channel is revolved, cooling water is transferred to the cooling water channel B of upper guide groove body by lower guide channel body into cooling water channel A, with guide groove sheet
Heat on body is discharged after carrying out heat exchange.The cooling water of discharge takes away substantial amounts of heat on guide groove body, makes this body temperature of guide groove
Degree is in all the time is intended to normal temperature state.The guide groove body for being intended to normal temperature state is advantageous to a large amount of suctions to rolled piece surface temperature
Receive, promote rolled piece center portion temperature rapidly, largely to be transmitted to rolled piece surface, carry out having reached rolled piece center portion temperature during water-cooling process again
The effect effectively continuously declined, necessary condition is provided to obtain preferable phase transition temperature, has played recover section truly
Function, important function is played fully to improve product mechanical property.
Compressed air enters gas jets by lower guide channel, and equal direction is run along taper air-jet channel guide groove pilot hole and rolled piece
Carry out air purging and air cooling is carried out to rolled piece.Rolled piece enters guide groove, can avoid frictionally holding steady fortune under deflector roll effect
OK.
Compressed air enters after gas jets as the reduction of tapered injection airway diameter, its air pressure, flow velocity are able to several times direct ratio
Increase (flow velocity ＞ 200M/S, air pressure, flow relocity calculation omit).The air pressure of equal direction increase is run with rolled piece, the gas of flow velocity produces
Give birth to the motive force of rolled piece operation and the rolled piece on deflector roll is run steadily, easily.Air cooling is not only able to make
Guide groove pilot hole surface temperature, which declines, contributes to rolled piece surface temperature to go up, and accelerates rolled piece cooling velocity.Accelerating to roll
In the environment of part air cooling velocity, rolled piece is set to obtain similar air normalized treatment technique in slow cooling recover section.The metal of material
Tissue crystals's particle is fined, and the physical property such as tensile strength, yield strength, impact flexibility is improved, preferable to obtain
Phase transition temperature, fully improve product physical property necessary condition be provided, played truly slow cooling recover section function
Important function.
After rolled piece enters guide groove bullport, in the presence of deflector roll makees rolling movement and deflector roll pass, rolled piece is avoided
Jitter phenomenon and the resistance of motion in running, the motion of rolled piece is set to be changed into light, steady.Because rolled piece is in the hole of deflector roll
Run in type, overcome rolled piece and produce friction with pilot hole, so as to avoid product because friction and caused by surface damage, ensure that
The surface quality of product.
Spacing between upper lower guide roll according to rolled piece specification and can be actually needed adjustment.Set-up procedure is：Unclamp locking screw
Female and fastening bolt, according to rolled piece specification and be actually needed eccentric rotation axis, until tightened again after reaching requirement locking nut and
Fastening bolt.When using guide groove B face pilot holes, some angles of eccentric shaft turns can be carried out to the adjustment of deflector roll spacing,
The production needs of plurality of specifications rolled piece can be met.In the case that deflector roll may wear to necessarily, guide groove body can be still continuing with,
Rolling mechanism correlated parts only need to be changed, the service life of guide groove is extended, reduces production cost.
The beneficial effects of the invention are as follows：
The present invention makes guide groove sheet by setting convolution cooling water channel to reduce the temperature of guide groove body on guide groove body
Temperature is all the time in being intended to normal temperature state, beneficial to a large amount of absorptions to rolled piece surface temperature, promote rolled piece center portion temperature to
Rolled piece surface is rapid, largely transmits, and carries out having reached the effect that rolled piece center portion temperature effectively continuously declines during water-cooling process again, is
Obtain preferable phase transition temperature and necessary condition is provided, beneficial to raising product mechanical property；
The present invention avoids jitter phenomenon and the resistance of motion in rolled piece running, makes rolled piece also by setting deflector roll
Motion is easily, steadily.Avoid product because of friction and caused by surface damage, ensure that the surface quality of product；
Rolled piece is cooled down by air-flow, while gas is generated to the motive force of rolled piece operation and made on deflector roll
Rolled piece run steadily, easily.
Brief description of the drawings
Fig. 1 is the front view of existing structure；
Fig. 2 is the top view of existing structure；
Fig. 3 is the left view of existing structure；
Fig. 4 is the structural representation of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiments and the drawings are closed, the present invention is expanded on further, but following embodiments are only the preferred embodiments of the present invention, not
All.Based on the embodiment in embodiment, those skilled in the art are obtained on the premise of creative work is not made
Other embodiments, belong to protection scope of the present invention.
As shown in figure 4, a kind of two-sided guide groove in wind water cooling roller slow cooling section, including guide groove body, set on guide groove body
Convolution cooling water channel is equipped with, guide groove body is made up of lower guide channel body 9 and upper guide groove body 5, and convolution cooling water channel is by cooling water
Road A 10 and cooling water channel B 6 are formed, and cooling water channel A 10 is opened in lower guide channel body 9, and cooling water channel B 6, which is opened in, to be led
In groove body 5, cooling water channel A 10 and cooling water channel B 6 left end are respectively arranged with the first Luo Saikong, are set in the first Luo Saikong
The right-hand member for being equipped with the first Luo Sai, cooling water channel A 10 and cooling water channel B 6 is respectively arranged with the second Luo Saikong, in the second Luo Saikong
The right-hand member for being provided with the second Luo Sai, cooling water channel A 10 and cooling water channel B 6 connects composition convolution cooling by the second Luo Saikong
Water channel.
Cooling water is transferred to the cooling water channel B6 of upper guide groove body 5 by lower guide channel body 9 into cooling water channel A 10, with guide groove
Heat on body is discharged after carrying out heat exchange.
Also include gas jets, gas jets are bolted with guide groove body, and gas jets are by lower gas jets 7 and upper gas blowout
Mouth 2 is involuted, and lower guide roll 8 is provided with lower gas jets 7, and deflector roll 3, lower guide roll 8 and upper deflector roll are provided with upper gas jets 2
3, which are oppositely arranged on guide groove both sides, forms a pair of deflector roll cooperatings, and deflector roll is provided with the roll surface of lower guide roll 8 and upper deflector roll 3
Pass, deflector roll pass are the V-groove that angle is 120 °.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, that described in above-described embodiment and specification is only the present invention
Preference, be not intended to limit the present invention, without departing from the spirit and scope of the present invention, the present invention also have it is various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached claims and its equivalent thereof.
Claims (1)
- A kind of 1. two-sided guide groove in wind water cooling roller slow cooling section, it is characterised in that：Including guide groove body, set on guide groove body There is convolution cooling water channel, the guide groove body is made up of lower guide channel body and upper guide groove body, and the convolution cooling water channel is by cold But water channel A and cooling water channel B is formed, and the cooling water channel A is opened in lower guide channel body, and the cooling water channel B is opened in In guide groove body, the left end of the cooling water channel A and cooling water channel B are respectively arranged with the first spiro pluging hole, are set in the first spiro pluging hole It is equipped with the first plug screw, the right-hand member of the cooling water channel A and cooling water channel B is respectively arranged with the second spiro pluging hole, in the second spiro pluging hole The second plug screw is provided with, the cooling water channel A connects composition convolution cooling water channel with cooling water channel B right-hand member；Also include gas jets, gas jets are bolted with guide groove body, and the gas jets are by lower gas jets and upper gas jets Involute, lower guide roll be installed in the lower gas jets, deflector roll is installed in the upper gas jets, the lower guide roll with it is upper Deflector roll is oppositely arranged on guide groove body both sides and forms a pair of deflector roll cooperatings, is provided with the roll surface of lower guide roll and upper deflector roll Deflector roll hole, deflector roll hole are the V-groove that angle is 120 °；The lower guide roll is arranged in lower gas jets by eccentric shaft and eccentric bushing, and the upper deflector roll passes through eccentric shaft and eccentric bushing In upper gas jets；Taper air-jet channel is provided with the gas jets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209700.6A CN104826877B (en) | 2015-04-24 | 2015-04-24 | A kind of two-sided guide groove in wind water cooling roller slow cooling section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209700.6A CN104826877B (en) | 2015-04-24 | 2015-04-24 | A kind of two-sided guide groove in wind water cooling roller slow cooling section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104826877A CN104826877A (en) | 2015-08-12 |
| CN104826877B true CN104826877B (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510209700.6A Expired - Fee Related CN104826877B (en) | 2015-04-24 | 2015-04-24 | A kind of two-sided guide groove in wind water cooling roller slow cooling section |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234362B (en) * | 2015-10-27 | 2017-06-20 | 南京钢铁股份有限公司 | A kind of bloom fan-shaped section resistance to deformation foot roller combination unit and its application process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1012151A (en) * | 1962-06-18 | 1965-12-08 | Dorman Long Steel Ltd | Improvements in or relating to entry guides for rolling mills |
| CN201020479Y (en) * | 2007-02-16 | 2008-02-13 | 宝山钢铁股份有限公司 | Wire mill entrance slide guiding device |
| CN101773943A (en) * | 2010-01-08 | 2010-07-14 | 山东西王特钢有限公司 | Device for preventing deformed bars from bending |
| CN203437425U (en) * | 2013-08-10 | 2014-02-19 | 马鞍山市方圆材料工程有限公司 | Water cooling outlet guide assembly |
| CN204018386U (en) * | 2014-08-06 | 2014-12-17 | 马鞍山市麦立机械制造有限公司 | The guider of rolling high speed wire stock guiding channel |
| CN204523805U (en) * | 2015-04-24 | 2015-08-05 | 合肥精工导卫配件有限责任公司 | The two-sided guide groove in a kind of wind water cooling roller slow cooling section |
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- 2015-04-24 CN CN201510209700.6A patent/CN104826877B/en not_active Expired - Fee Related
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