CN108405621A - The cold rolling process of heavy caliber hyper-thick pipe pipe - Google Patents
The cold rolling process of heavy caliber hyper-thick pipe pipe Download PDFInfo
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- CN108405621A CN108405621A CN201810255151.XA CN201810255151A CN108405621A CN 108405621 A CN108405621 A CN 108405621A CN 201810255151 A CN201810255151 A CN 201810255151A CN 108405621 A CN108405621 A CN 108405621A
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- Prior art keywords
- steel pipe
- pipe
- feeder
- hyper
- internal model
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/04—Cooling or lubricating mandrels during operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The present invention relates to steel pipe rolling technical field, specially a kind of cold rolling process of heavy caliber hyper-thick pipe pipe.The method of the present invention is mainly as follows：Steel pipe is sent into cold-rolling mill and is rolled, while steel pipe being kept to be sent into；In the operation of rolling, while keeping steel pipe to be sent into, steel pipe is made to rotate, under the collective effect of interior external mold, steel pipe subtracts wall tube reducing, forms tube rolling.The present invention produces hyper-thick pipe pipe using cold-rolling practice, and realizes the molding rolling mill practice of a time, avoids the rolling of continuous multi-pass.Using hyper-thick pipe pipe made from the method for the present invention, than using hyper-thick pipe pipe better quality made from cold-drawing process, if inner wall is more smooth, impulse- free robustness in the market.
Description
Technical field：
The present invention relates to steel pipe rolling technical field more particularly to a kind of cold rolling process of heavy caliber hyper-thick pipe pipe.
Background technology：
Thick-walled pipe, the steel pipe of the ratio between outer diameter of steel pipes and wall thickness less than 20 are known as thick-walled pipe；And usually by outer diameter of steel pipes and wall
Steel pipe of the ratio between the thickness less than 5 is known as hyper-thick pipe pipe.The outer diameter of common large-sized heavy-wall tube reaches 400mm or more；And it is small-bore
The outer diameter of hyper-thick pipe pipe is generally in 16mm or so, and wall thickness is in 5mm or so.This kind of pipe be widely used in high pressure chemical industry equipment,
Aerospace field etc..
In the prior art, this kind of pipe is based on cold-drawn.Since cold-drawing technology is a kind of pulling method, it is by steel pipe from one
It in the openning of a interior external mold cooperation for limiting shape, pulls out molding, therefore easy tos produce inner wall burr, inner wall coarse etc.
All kinds of problems, and in process of tube plug drawing mill, tube wall is also more difficult to control on metal fluidity, easily occur that wall unevenness is even to ask
Topic.
Invention content：
It, will the purpose of the present invention is in view of the drawbacks of the prior art, providing a kind of cold rolling process of heavy caliber hyper-thick pipe pipe
Eight procedure in the prior art is integrated into a procedure, passes through the inner wall and outer wall of the heavy caliber hyper-thick pipe pipe that this method rolls
It is more smooth, impulse- free robustness.
The present invention is achieved through the following technical solutions：A kind of cold rolling process of heavy caliber hyper-thick pipe pipe, including it is following
Step：
A, steel pipe is sent into cold-rolling mill, so that steel pipe inner wall is nested in internal model, outer wall of steel pipe connects with the annular groove of external mold
It touches, and steel pipe is made to be sent into；
B, so that the external mold of cold-rolling mill is carried out reciprocal rolling to steel pipe, make the tube wall of steel pipe that metal occur by squeezing action
Flowing occurs tube reducing and subtracts wall；
During the rolling process, while keeping steel pipe to be sent into, steel pipe is made to rotate；
The external mold includes symmetrically arranged upper die and lower die, and upper die and lower die all have annular groove, and the depth of the annular groove
Degree is gradually deepened in its rolling direction；
The internal model is the shaft of a smooth outer surface, if a diameter of d；Diameter corresponding to the annular groove of external mold is set as
D, then D-d ≮ 18mm.
Usually when manufacturing hyper-thick pipe pipe, inside and outside die orifice diameter has larger difference.Difference represents the thickness of hyper-thick pipe pipe.
Assuming that one outer diameter 16mm of manufacture, the hyper-thick pipe pipe of wall thickness 5mm generally select outer diameter 32mm, the steel pipe of wall thickness 5.5mm.In this way,
Steel pipe is in forming process, and the variation of tube wall is minimum, and cold rolling is mainly reflected on tube reducing.It typically needs by multiple tracks
Secondary tandem rolling is realized.And the external mold that the present invention uses has following characteristics, " depth of the annular groove is gradual in its rolling direction
Deepen ", therefore can be realized by single cold rolling.At this time the Dmax of external mold can select 32mm, Dmin that can choose 16mm
Bore；Internal model can choose the plug of 6mm bores.When cold rolling just starts, since plug is tiny, steel pipe inner wall can not be formed
Effective reaction force, therefore, in the case where not resisted, outer diameter significantly becomes smaller steel pipe, and its wall thickness does not change.
And when the outer diameter of steel pipe changes to 17mm, at this point, wall thickness is still 5.5mm, then external mold, steel pipe and internal model just occur comprehensively
It mutually squeezes, from that point on, internal model starts the anticaustic inner wall in steel pipe, and steel pipe is that tube reducing subtracts the double of wall from single tube reducing variation
It moves again, is finally made outer diameter 16mm, the hyper-thick pipe pipe of wall thickness 5mm, which is expressed as 16 × 5, similarly hereinafter.
During the entire process of rolling, the tube reducing of early period is operated since resistance is relatively small, may be used outside reducing
Mould carries out acceleration rolling process, can save the operation of multi-pass in this way, and do not influence on final product quality.
The present invention carries out special designing by calculation formula to the axial cross section of internal model, makes two of the axial cross section of internal model
Long side constitutes curve, i.e. the outer profile of internal model cross section is formed by the rate that diameter of a circle becomes smaller and is gradually reduced, and diameter becomes
Change rate and form parabola, and its diameter change rate matches with the change in depth rate of the annular groove on external mold always.
As a preferred embodiment of the above technical solution, the curve is formed by two curve connections, and smoothed in its joining place
It crosses.
As a preferred embodiment of the above technical solution, two curves constitute two sections of rolling, and first segment is large deformation section,
The section is based on tube reducing (i.e. diameter), and second segment is gentle section, and the section is to subtract based on wall (i.e. wall thickness), supplemented by tube reducing.
As a preferred embodiment of the above technical solution, this method is full-automatic using one kind of 106001117 A of Patent No. CN
Steel pipe rolling system is achieved；The Full-automatic steel pipe rolling system includes at least feeder and cold-rolling mill, the feeding
The first pre- feeder and the second pre- feeder are equipped between machine and cold-rolling mill, the first pre- feeder is arranged in the feeder
Discharge end, the second pre- feeder is arranged the feed end in cold-rolling mill, and the first pre- feeder is equipped with oil filling mechanism,
Steel pipe market is carried out oiling by the feeder to the described first pre- feeder, the steel pipe market after oiling to described second it is pre- on
Material machine is kept in.
As a preferred embodiment of the above technical solution, the described first pre- feeder includes the first loading rack and setting in the first charging
The feed end in first loading rack is arranged in the first slideway on frame, the oil filling mechanism；The second pre- feeder includes
Second loading rack and the second slideway being arranged on the second loading rack, the first pre- feeder are equipped with the second pre- feeder
Clamp and swing mechanism and delivery device for pushing the steel pipe being located in the first slideway or the second slideway, second loading rack
Discharge end be equipped with movable feed mechanism, steel pipe is sent into cold-rolling mill by the activity feed mechanism with intermittent mode to be rolled
System.
As a preferred embodiment of the above technical solution, the clamp and swing mechanism includes the charging being arranged in first loading rack
End the first internal model chuck, be arranged the discharge end of first loading rack the second internal model chuck, setting it is described second dress
The 4th internal model chuck in the discharge end of second loading rack, Yi Jilian is arranged in the third internal model chuck of the feed end of rack
Connect the rotating shaft of the first internal model chuck and the second internal model chuck and third internal model chuck and the 4th internal model chuck, the oiling
Centering machine is equipped between mechanism and the first internal model chuck, one end of the rotating shaft extends to form forward guide bar, institute
Guide bar is stated between the first internal model chuck and the oil filling mechanism, the centering machine makes steel pipe by certralizing ability
Axis overlapped with the axis of the guide bar.
As a preferred embodiment of the above technical solution, the centering machine includes centering mounting plate, a pair of is symmetrical set
Upper transmission arm, a pair of underdrive arm being symmetrical set, be arranged upper transmission arm upper end centring chuck and be articulated with described
The push component of the lower end of underdrive arm, the centering mounting plate, which is equipped with, makes the through-hole that steel pipe passes through, the upper transmission arm
Upper end is articulated on the centering mounting plate, and the lower end of the upper end of the underdrive arm and the upper transmission arm is hinged, it is described on
Transmission arm forms diamond structure with the underdrive arm, and the centring chuck sets up separately in the upper end of two upper transmission arms and shape
At the clamping opening for steel pipe to be clamped.
As a preferred embodiment of the above technical solution, the oil filling mechanism includes mounting bracket, is slidably connected on the mounting bracket
Sliding rack, be hinged on the sliding rack mounting blocks, be fixed in the oiling end of mounting blocks lower end and push the cunning
The top of the Pneumatic assembly of moving frame sliding, the mounting bracket is equipped with limiting plate, and the limiting plate is equipped with sliding slot, the mounting blocks
Upper end be slidably connected in the sliding slot.
As a preferred embodiment of the above technical solution, the sliding slot includes the first sliding groove being obliquely installed with horizontal plane and is parallel to
The second sliding slot of horizontal plane, the first sliding groove form the angle more than 90 ° and less than 180 ° with the second sliding slot；The peace
The upper end of block is filled to the line of the mounting blocks and the hinge joint of sliding rack, with the oiling end to the mounting blocks and sliding
The line of the hinge joint of frame forms the angle more than 90 ° and less than 180 °.
The present invention realizes automatic charging by feeder, steel pipe market to the first pre- feeder is carried out oiling, by oiling
Steel pipe market afterwards to the second pre- feeder is kept in, and the will be immediately temporarily stored in after waiting for cold rolling mill to complete a steel pipe
Steel pipe market on two pre- feeders to cold rolling into being rolled, make cold-rolling mill carry out continuous rolling, avoid cold-rolling mill shut down or
Idle running.
Beneficial effects of the present invention：
1, the present invention produces hyper-thick pipe pipe using cold-rolling practice, and realizes the molding rolling mill practice of a time, avoids
The rolling of continuous multi-pass；
2, using hyper-thick pipe pipe made from the method for the present invention, than using hyper-thick pipe pipe quality made from cold-drawing process in the market more
It is good, if inner wall is more smooth, impulse- free robustness；
3, high degree of automation of the present invention can realize automation feeding, oiling, temporary and rolling, realize cold-rolling mill
Continuous rolling, avoid cold-rolling mill causes multiple start and stop or idle running because lacking material, improves production efficiency.
Description of the drawings：
Fig. 1 is the structural schematic diagram of the relied on equipment of the method for the present invention；
Fig. 2 is the structural schematic diagram of feeder；
Fig. 3 is the structural schematic diagram of oil filling mechanism；
Fig. 4 is the structural schematic diagram of centering machine；
Fig. 5 is the structural schematic diagram of expeller and pusher pusher dog；
Fig. 6 is the attachment structure schematic diagram of pusher pusher dog and rotating shaft；
Fig. 7 is the structural schematic diagram of movable feed mechanism；
Fig. 8 is the vertical view of movable feed mechanism；
Fig. 9 is the attachment structure schematic diagram of fixed feed mechanism；
Figure 10 is the structural schematic diagram of internal model；
In figure：10- feeders, 1- loading frames, 2-V shape slots, 3- steel pipe delivery devices, 31- push framves, 32- drive chains,
33- pushing pieces, the insertion sections 331-, 34- protective covers, 4- stoppers, 5- transition frames, 6- steel pipe supporting mechanisms, 61- support blocks, 62-
Swing arm, 63- STATEMENT OF FEDERALLY SPONSOREDs, 64- hinged seats, 65- drive components, 7- sensors, the first pre- feeders of 20-, 201- oil filling mechanisms,
2011- mounting brackets, 2012- sliding racks, 2013- mounting blocks, 2014- oilings end, 2015- Pneumatic assemblies, 2016- limiting plates,
2017- sliding slots；202- centering machines, 2021- centering mounting plates, the upper transmission arms of 2022-, 2023- underdrive arms, 2024- centering
Collet, 2025- push components, 203- the first internal model chucks, 204- delivery devices, 2041- expellers, 2042- pusher pusher dogs,
2043- buckling parts, 205- the second internal model chucks, 206- guide bars, the second pre- feeders of 30-, 301- third internal model chucks, 302-
4th internal model chuck, 303- activity feed mechanisms, the first fixed frames of 3031-, 3032- installing arms, 3033- telescopic components, 3034-
First forwarding wheel, 3035- driving motors, 3036- transmission gears, 304- fix feed mechanism, the second fixed frames of 3041-, 3042-
Second forwarding wheel, 40- cold-rolling mills, 4011- large deformation sections, the gentle sections of 4012-.
Specific implementation mode：
The present invention is further detailed below in conjunction with attached drawing.
Present embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can make modification to the present embodiment as needed after reading this specification, but as long as in the claim of the present invention
It is all protected by Patent Law in range.The direction term that the present invention is previously mentioned, for example, "upper", "lower", "front", "rear", "
A left side ", " right side ", "top", "bottom" etc. are only the directions with reference to annexed drawings.Therefore, the direction term used is to illustrate and manage
The solution present invention, rather than to limit the present invention.
The present invention provides a kind of cold rolling process of aximal deformation value ultra-thin tube, includes the following steps：
A, steel pipe is sent into cold-rolling mill, so that steel pipe inner wall is nested in internal model, outer wall of steel pipe connects with the annular groove of external mold
It touches, and steel pipe is made to be sent into；
B, so that the external mold of cold-rolling mill is carried out reciprocal rolling to steel pipe, make the tube wall of steel pipe that metal occur by squeezing action
Flowing occurs tube reducing and subtracts wall；
During the rolling process, while keeping steel pipe to be sent into, steel pipe is made to rotate；
The external mold includes symmetrically arranged upper die and lower die, and upper die and lower die all have annular groove, and the depth of the annular groove
Degree is gradually deepened in its rolling direction；
The internal model is the shaft of a smooth outer surface, if a diameter of d；Diameter corresponding to the annular groove of external mold is set as
D, then D-d ≮ 18mm.
Internal model as shown in Figure 10, two long sides of the axial cross section of the internal model constitute curve, i.e. internal model cross section
Outer profile is formed by the rate that diameter of a circle becomes smaller and is gradually reduced.The curve is formed by two curve connections, and in its rank
The place of connecing seamlessly transits.Two curves constitute two sections of rolling, and first segment is large deformation section 4011, which is with tube reducing
Main, second segment is gentle section 4012, and the section is to subtract based on wall, supplemented by tube reducing.
As shown in Figure 1, a kind of Full-automatic steel pipe rolling system, is to implement a kind of system used required for the above method；
It includes feeder 10 and cold-rolling mill 40, and it is pre- that the first pre- feeder 20 and second is equipped between the feeder 10 and cold-rolling mill 40
The discharge end in the feeder 10, the second pre- feeder 30 setting is arranged in feeder 30, the first pre- feeder 20
In the feed end of cold-rolling mill 40, the first pre- feeder 20 is equipped with oil filling mechanism 201, and the feeder 10 is by steel pipe market
Oiling is carried out to the described first pre- feeder 20, the steel pipe market after oiling is kept in the described second pre- feeder 30.
First pre- feeder 20 includes the first loading rack and the first slideway being arranged on the first loading rack, the oiling machine
The feed end in first loading rack is arranged in structure 201.The second pre- feeder 30 includes the second loading rack and setting the
The second slideway on two loading racks, the first pre- feeder, 20 and second pre- feeder 30 are equipped with clamp and swing mechanism and use
In the delivery device 204 of steel pipe of the push in the first slideway or the second slideway, the discharge end of second loading rack is equipped with
Movable feed mechanism 303, steel pipe is sent into cold-rolling mill 40 by the activity feed mechanism 303 with intermittent mode to be rolled.Make
Steel pipe inner wall is nested in the internal model of cold-rolling mill 40, and outer wall of steel pipe is in contact with the annular groove of external mold, and steel pipe is made to be sent into；Cold-rolling mill
40 external mold and internal model carries out steel pipe reciprocal rolling, makes the tube wall of steel pipe that metal flow occur by squeezing action, occurs
Tube reducing subtracts wall；During the rolling process, while keeping steel pipe to be sent into, steel pipe is made constantly to rotate, to gradually obtain heavy caliber
Hyper-thick pipe pipe, tolerance is within ± 0.01mm.
Clamp and swing mechanism includes being arranged to exist in the first internal model chuck 203 of the feed end of first loading rack, setting
Second internal model chuck 205 of the discharge end of first loading rack is arranged in the third of the feed end of second loading rack
The 4th internal model chuck 302 in the discharge end of second loading rack, and connection first internal model is arranged in mould chuck 301
The rotating shaft of chuck 203 and the second internal model chuck 205 and third internal model chuck 301 and the 4th internal model chuck 302, the oiling machine
Centering machine 202 is equipped between structure 201 and the first internal model chuck 203, one end of the rotating shaft, which extends to form forward, leads
Draw bar 206, the guide bar 206 is between the first internal model chuck 203 and the oil filling mechanism 201, the centring machine
Structure 202 makes the axis of steel pipe be overlapped with the axis of the guide bar 206 by certralizing ability.
Shown in as shown in Figure 1, Figure 3 and Figure 4, centering machine 202 is arranged in the oil filling mechanism 201 and the first internal model chuck
Between 203, one end of the rotating shaft extends to form forward guide bar 206, and the guide bar 206 is located at the first internal model card
Between disk 203 and the oil filling mechanism 201.The centering machine 202 makes the axis of steel pipe and the guiding by certralizing ability
The axis of bar 206 overlaps.Centering machine 202 include centering mounting plate 2021, a pair of upper transmission arm 2022 being symmetrical set,
Underdrive arm 2023 that a pair is symmetrical set, be arranged 2022 upper end of upper transmission arm centring chuck 2024 and be articulated with institute
The push component 2025 of the lower end of underdrive arm 2023 is stated, push component 2025 is cylinder, hydraulic cylinder etc..Centering mounting plate 2021
Being equipped with makes the through-hole that steel pipe passes through, the upper end of upper transmission arm 2022 be articulated on the centering mounting plate 2021, be passed under described
The upper end of swing arm 2023 and the lower end of the upper transmission arm 2022 are hinged, the upper transmission arm 2022 and the underdrive arm 2023
Diamond structure is formed, the centring chuck 2024 sets up the upper end of upper transmission arm 2022 at two separately and formed for steel pipe to be clamped
Clamping opening.
As shown in figures 1 and 3, oil filling mechanism 201 includes mounting bracket 2011, is slidably connected on the mounting bracket 2011
Sliding rack 2012, the mounting blocks 2013 being hinged on the sliding rack 2012, the oiling end for being fixed in 2013 lower end of mounting blocks
2014 and the Pneumatic assembly 2015 that pushes the sliding rack 2012 to slide, Pneumatic assembly 2015 is cylinder.The mounting bracket
2011 top is equipped with limiting plate 2016, and the limiting plate 2016 is equipped with sliding slot 2017, and the upper end of the mounting blocks 2013 is slided
It is dynamic to be connected in the sliding slot 2017.Sliding slot 2017 includes the first sliding groove being obliquely installed with horizontal plane and is parallel to horizontal plane
Second sliding slot, the first sliding groove form the angle more than 90 ° and less than 180 ° with the second sliding slot.Mounting blocks 2013 it is upper
The line for holding the mounting blocks 2013 and the hinge joint of sliding rack 2012 arrives the mounting blocks with the oiling end 2014
2013 form the angle more than 90 ° and less than 180 ° with the line of the hinge joint of sliding rack 2012.
As shown in Fig. 1, Fig. 5 and Fig. 6, delivery device 204 includes passing chain along the transmission chain of steel pipe market directional spreding, driving
Mobile sprocket wheel and the drive sprocket decelerating motor rotated and the expeller 2041 being fixed on transmission chain, the expeller
2041 are equipped with the pusher pusher dog 2042 being located above slideway, and the pusher pusher dog 2042 is articulated on the expeller 2041,
The lower part of the pusher pusher dog 2042, which is equipped with, is fastened on buckling parts 2043 on the rotating shaft, the buckling parts 2043 be equipped with
The guide groove of the rotating shaft surface engagement, the non-push end of the buckling parts 2043 are equipped with the inclined-plane for entering slideway convenient for steel pipe.
As shown in Fig. 1, Fig. 6, Fig. 7 and Fig. 8, movable feed mechanism 303 with intermittent mode by steel pipe be sent into cold-rolling mill in into
Row rolling.Movable feed mechanism 303 includes the first fixed frame 3031 being fixed on the second loading rack, it is solid to be hinged on described first
Determine a pair of of installing arm 3032 on frame 3031, the telescopic component 3033 for pushing installing arm 3032 to rotate and is arranged in installing arm 3032
On the driving motor 3035 that rotates of the first forwarding wheel 3034 and driving first forwarding wheel 3034.Installing arm 3032 is hinged
One end on first fixed frame 3031 is connected with transmission gear 3036, transmission gear 3036 and adjacent installing arm 3032
On transmission gear 3036 engage.Telescopic component 3033 is cylinder, hydraulic cylinder etc., and one end of telescopic component 3033 is hinged on described
On first fixed frame 3031, the other end is hinged in the installing arm 3032, and the telescopic component 3033 pushes the installing arm
3032 rotations are to control the spacing of described two first forwarding wheels 3034.
The discharge end of second loading rack is additionally provided with fixed feed mechanism 304, and the fixed feed mechanism 304 is arranged described
303 rear of movable feed mechanism.
It is used as shown in figure 9, fixed feed mechanism 304 includes the second fixed frame 3041 and being connected on the second fixed frame 3041
In the second forwarding wheel of a pair 3042 for being clamped in steel pipe both sides, the spacing of two the second forwarding wheels 3042 is kept in feeding process
It is constant.
As shown in Fig. 2, feeder includes loading frame 1, V-shaped groove 2 and steel pipe delivery device 3.Loading frame 1 is to be obliquely installed,
Height of the loading frame far from 2 side of V-shaped groove is higher than loading frame 1 close to the height of 2 side of V-shaped groove.Loading frame 1 is close to V-shaped groove 2
Side is equipped with blocking steel pipe and enters the stopper 4 in V-shaped groove 2.Transition frame 5, transition frame 5 are equipped between V-shaped groove 2 and stopper 4
To be obliquely installed, inclined direction is consistent with 1 inclined direction of loading frame.The upper surface of transition frame 5 higher than V-shaped groove 2 notch or
It is flushed with the notch of V-shaped groove 2.The lower section of V-shaped groove 2 is equipped with sensor 7.
Loading frame 1 is equipped with steel pipe supporting mechanism 6, and the steel pipe at stopper 4 is held up, made by steel pipe supporting mechanism 6
Steel pipe enters V-shaped groove 2.Steel pipe supporting mechanism 6 includes support block 61, the swing arm 62 for driving support block 61 to move up and down and driving pendulum
The drive component 65 that arm 62 is swung.The middle part of swing arm 62 is articulated with the lower section of loading frame 1, and support block 61 is fixed in the upper of swing arm 62
End, drive component 65 make support block 61 move up and down by acting on the lower end of swing arm 62.Steel pipe supporting mechanism 6 is at least provided with two
Group, and be interval setting, it is equipped with STATEMENT OF FEDERALLY SPONSORED 63 between two adjacent groups steel pipe supporting mechanism 6, the lower end of swing arm 62 is articulated with linkage
On part 63, STATEMENT OF FEDERALLY SPONSORED 63 is connect with drive component 65.The end of STATEMENT OF FEDERALLY SPONSORED 63 is equipped with hinged seat 64, hinged seat 64 and drive component
65 is hinged, and drive component 65 can be cylinder or hydraulic cylinder.
Steel pipe delivery device 3 includes that push frame 31, the pushing piece 33 moved along push frame 31 and driving pushing piece 33 move
Drive chain 32, drive chain 32 is by motor-driven rotation.V-shaped groove 2 is fixed on push frame 31, and one end of pushing piece 33 is connected to
On drive chain 32, the other end of pushing piece 33 is arranged in the top of V-shaped groove 2, pushes the steel pipe movement being located in V-shaped groove 2.Push
Part 33 is equipped with insertion section 331, and insertion section 331 is used to plug in the steel pipe in V-shaped groove 2 to push steel pipe movement.It pushes away
Frame 31 is sent to be equipped with the protective cover 34 for being provide with drive chain 32.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.
Claims (10)
1. a kind of cold rolling process of heavy caliber hyper-thick pipe pipe, which is characterized in that include the following steps：
A, steel pipe to be sent into cold-rolling mill, steel pipe inner wall is made to be nested in internal model, outer wall of steel pipe is in contact with the annular groove of external mold, and
Steel pipe is set to be sent into；
B, so that the external mold of cold-rolling mill is carried out reciprocal rolling to steel pipe, make the tube wall of steel pipe that metal stream occur by squeezing action
It is dynamic, tube reducing occurs and subtracts wall；
During the rolling process, while keeping steel pipe to be sent into, steel pipe is made to rotate；
The external mold includes symmetrically arranged upper die and lower die, and upper die and lower die all have annular groove, and the depth of the annular groove exists
Gradually deepen in its rolling direction；
The internal model is the shaft of a smooth outer surface, if a diameter of d；Diameter corresponding to the annular groove of external mold is set as D, and
D-d≮18mm。
2. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 1, it is characterised in that：The axial direction of the internal model is cut
Two long sides in face constitute curve, i.e. the outer profile of internal model cross section is formed by the rate that diameter of a circle becomes smaller and is gradually reduced.
3. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 2, it is characterised in that：The curve is by two songs
Line is connected, and is seamlessly transitted in its joining place.
4. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 3, it is characterised in that：Two curves are constituted
Two sections of rolling, first segment are large deformation section, and for the section based on tube reducing, second segment is gentle section, which is subtracted with subtracting based on wall
Supplemented by diameter.
5. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 1, it is characterised in that：This method is to use entirely certainly
What dynamic steel pipe rolling system was achieved；The Full-automatic steel pipe rolling system includes at least feeder (10) and cold-rolling mill
(40), the first pre- feeder (20) and the second pre- feeder (30), institute are equipped between the feeder (10) and cold-rolling mill (40)
The first pre- feeder (20) setting is stated in the discharge end of the feeder (10), second pre- feeder (30) setting is in cold rolling
The feed end of machine (40), the first pre- feeder (20) are equipped with oil filling mechanism (201), and the feeder (10) is defeated by steel pipe
It is sent to the described first pre- feeder (20) and carries out oiling, the steel pipe market after oiling to the described second pre- feeder (30) carries out temporary
It deposits.
6. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 5, it is characterised in that：The first pre- feeder
(20) the first slideway for including the first loading rack and being arranged on the first loading rack, the oil filling mechanism (201) are arranged described
The feed end of first loading rack；The second pre- feeder (30) include the second loading rack and be arranged on the second loading rack the
Two slideways, the first pre- feeder (20) are equipped with clamp and swing mechanism with the second pre- feeder (30) and are located at for pushing
The delivery device (204) of first slideway or the steel pipe in the second slideway, the discharge end of second loading rack are equipped with activity and are sent into
Mechanism (303), steel pipe is sent into cold-rolling mill (40) by the activity feed mechanism (303) with intermittent mode to be rolled.
7. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 6, it is characterised in that：The clamp and swing mechanism
Including be arranged the feed end of first loading rack the first internal model chuck (203), going out in first loading rack is set
Expect end the second internal model chuck (205), be arranged the feed end of second loading rack third internal model chuck (301), setting
In the 4th internal model chuck (302) of the discharge end of second loading rack, and connection the first internal model chuck (203) and the
The rotating shaft of two internal model chucks (205) and third internal model chuck (301) and the 4th internal model chuck (302), the oil filling mechanism
(201) centering machine (202) is equipped between the first internal model chuck (203), one end of the rotating shaft extends forward shape
At guide bar (206), the guide bar (206) be located at the first internal model chuck (203) and the oil filling mechanism (201) it
Between, the centering machine (202) makes the axis of steel pipe be overlapped with the axis of the guide bar (206) by certralizing ability.
8. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 7, it is characterised in that：The centering machine
(202) it is symmetrical set including centering mounting plate (2021), a pair of upper transmission arm (2022) being symmetrical set, a pair
Underdrive arm (2023), setting upper transmission arm (2022) upper end centring chuck (2024) and be articulated with the underdrive arm
(2023) the push component (2025) of lower end, the centering mounting plate (2021), which is equipped with, makes the through-hole that steel pipe passes through, described
The upper end of upper transmission arm (2022) is articulated on the centering mounting plate (2021), the upper end of the underdrive arm (2023) and institute
The lower end for stating transmission arm (2022) is hinged, and the upper transmission arm (2022) forms diamond shape knot with the underdrive arm (2023)
Structure, the centring chuck (2024) set up the folder for steel pipe to be clamped in the upper end of two upper transmission arms (2022) and formation separately
Mouthful.
9. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 8, it is characterised in that：The oil filling mechanism
(201) include mounting bracket (2011), the sliding rack (2012) that is slidably connected on the mounting bracket (2011), be hinged on the cunning
Mounting blocks (2013) in moving frame (2012), the oiling end (2014) for being fixed in mounting blocks (2013) lower end and described in pushing
The top of the Pneumatic assembly (2015) of sliding rack (2012) sliding, the mounting bracket (2011) is equipped with limiting plate (2016), described
Limiting plate (2016) is equipped with sliding slot (2017), and the upper end of the mounting blocks (2013) is slidably connected at the sliding slot (2017)
It is interior.
10. the cold rolling process of heavy caliber hyper-thick pipe pipe according to claim 9, it is characterised in that：The sliding slot (2017)
Include the first sliding groove being obliquely installed with horizontal plane and the second sliding slot for being parallel to horizontal plane, the first sliding groove and described second
Sliding slot forms the angle more than 90 ° and less than 180 °；The upper end of the mounting blocks (2013) is to the mounting blocks (2013) and slides
The line of the hinge joint of moving frame (2012), with the oiling end (2014) to the mounting blocks (2013) and sliding rack (2012)
The line of hinge joint formed more than 90 ° and less than 180 ° of angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810255151.XA CN108405621A (en) | 2018-03-27 | 2018-03-27 | The cold rolling process of heavy caliber hyper-thick pipe pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810255151.XA CN108405621A (en) | 2018-03-27 | 2018-03-27 | The cold rolling process of heavy caliber hyper-thick pipe pipe |
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| CN108405621A true CN108405621A (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810255151.XA Pending CN108405621A (en) | 2018-03-27 | 2018-03-27 | The cold rolling process of heavy caliber hyper-thick pipe pipe |
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