CN107583954A - Hot pull tandem rolling tubulation production line and pipe-making method - Google Patents

Hot pull tandem rolling tubulation production line and pipe-making method Download PDF

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Publication number
CN107583954A
CN107583954A CN201710971809.2A CN201710971809A CN107583954A CN 107583954 A CN107583954 A CN 107583954A CN 201710971809 A CN201710971809 A CN 201710971809A CN 107583954 A CN107583954 A CN 107583954A
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CN
China
Prior art keywords
plug
rod
pull
production line
tandem rolling
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Pending
Application number
CN201710971809.2A
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Chinese (zh)
Inventor
王建辉
穆东
周继洪
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Mcc Ccid Equipment Co Ltd
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Mcc Ccid Equipment Co Ltd
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Application filed by Mcc Ccid Equipment Co Ltd filed Critical Mcc Ccid Equipment Co Ltd
Priority to CN201710971809.2A priority Critical patent/CN107583954A/en
Publication of CN107583954A publication Critical patent/CN107583954A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to a kind of hot pull tandem rolling tubulation production line and pipe-making method, the production line includes setting gradually necking machine, roller die group, pull rod device, mandrel bar loosening mill and rod stripping machine, the pull rod device includes drive device, pull bar and core rod connecting device, core rod connecting device is arranged on one end of pull bar, and it is arranged on the exit of roller die group, plug separator is additionally provided with the outlet of the roller die group, after drive device driving pull bar pulls the hollow hollow billet after necking to carry out continuous rolling by a number of die holder together with plug, separated with plug, the invention enables two kinds of slender rod piece force-bearing situations of push rod and plug by buckling for draw, force status substantially improves, improve the service life of plug and pull bar.

Description

Hot pull tandem rolling tubulation production line and pipe-making method
Technical field
The invention belongs to technical field of material metallurgy, is related to hot pull tandem rolling tubulation production line and pipe-making method.
Background technology
In metallurgical steel rolling field, continuous rolling technology is current state-of-the-art technology, is widely used, it can greatly improve unit Production capacity, and the product quality of stocking and mechanical property are good.Tandem rolling is to carry out the continuous of multi-pass to stocking by multiple frames to roll System.
Push rod unit is a kind of continuous rolling process in hot rolled seamless steel tube, and currently a popular pipe pushing technology is that CPE is that oblique milling is worn Hole and extension (Cross-roll Piercing and Elongation) technique, pipe wear into hollow billet on Mannesmann piercing mill, Head plug with the level is penetrated, extruding necking is carried out in necking machine station, the head of hollow billet is packed tightly on the head of plug On step, to bear jacking force during push pipe rolling.The steel pipe for penetrating plug and head necking is put on roll line, by rack Promote the steel pipe for penetrating plug to enter some groups of roller dies without transmission with push rod and carry out continuous passes.After the completion of rolling, tooth Bar is retracted together with push rod, and the steel pipe hard-pressed bale after rolling will be carried out on plug by the mandrel bar loosening mill of a roll interlaced arrangement Rod is taken off after loose rod again, plug is entered by the circulatory system to be rolled next time.
Push rod unit is applied to small-bore roll seamless steel tube, suitable for thin-walled and heavy wall, push up make during, Because push rod and plug are elongate rod, bear to push up larger jacking force, force status is bad, often causes push rod and plug top It is curved, or even push up disconnected.Meanwhile during being made on top, center is not easy to be consistent, product wall thickness accuracy can be caused to be deteriorated, limit The expansion of product specification is made.
The content of the invention
In view of this, can be with it is an object of the invention to provide a kind of hot pull tandem rolling tubulation production line and pipe-making method Improve the force-bearing situation of pull bar and plug, improve its service life.
To reach above-mentioned purpose, the present invention provides following technical scheme:
Hot pull tandem rolling tubulation production line, the production line include setting gradually necking machine, roller die group, pull rod device, pine Rod machine and rod stripping machine, the pull rod device include drive device, pull bar and core rod connecting device, and core rod connecting device is arranged on drawing One end of bar, and the exit of roller die group is arranged on, it is additionally provided with plug separator in the outlet of the roller die group.
Further, in addition to the punch and clamping and conveying device of necking machine porch are arranged on, the punch is arranged on life The side of producing line.
Further, in addition to the cooling device, lubricating arrangement, elongator and the plug preheating device that set gradually, it is described cold But device is arranged on the exit of rod stripping machine, and the plug preheating device is arranged on the porch of necking machine, forms plug conveying Circulation.
Further, the drive device includes main drive and rack-and-pinion, and the pull bar is arranged on rack, and is led to Cross main drive driving.
Further, the roller die group includes several die holders, and each die holder forms closed type by multiple free rolls, respectively The roller bottom of adjacent die holder or roll gap interlaced arrangement.
Further, each die holder freely rolls rod with three.
Hot pull tandem rolling pipe-making method, plug is penetrated into hollow hollow billet, carry out necking on roll line, while necking, Drive device drive pull bar by roller die group outlet side enter rolls bed, make rod head connect automatically necking it is good after it is hollow Hollow billet and plug, drive device driving pull bar pull the hollow hollow billet after necking to pass through a number of die holder together with plug Continuous rolling is carried out, after the completion of rolling, the hollow hollow billet with plug is all pulled out die holder by pull bar, and plug is walked the wire in outlet Place, provided with plug separator, pull bar is separated into back stay with plug and continues to retreat to position is waited, plug is together with hollow hollow billet Dial out on mandrel bar loosening mill front roller-way, be transported to mandrel bar loosening mill and carry out loose rod, plug and hollow billet is produced gap, then by rod stripping machine handle Plug is extracted out.
Further, the plug of extraction is cooled down and lubricated, it is necessary to which the plug to repair a die is handled by elongator roll off, then is passed through Cross core rod preheating furnace and be preheating to lubrication temperature, then circular treatment.
Further, punch puts on hollow hollow billet, clamps plug by clamping and conveying device and penetrates hollow hollow billet.
The beneficial effects of the present invention are:It is by buckling the invention enables two kinds of slender rod piece force-bearing situations of push rod and plug Draw, force status substantially improves, and improves the service life of plug and pull bar.Meanwhile in the drawing operation of rolling, plug centre bit Put and be more easy to ensure, thickness of steel pipe precision greatly improves, while product specification can be extended to very thin steel pipe and the steel pipe compared with heavy wall.By Improve in force status, the scope of application can also be extended to the steel pipe of larger caliber.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out Explanation:
Fig. 1 is the schematic diagram of production line of the present invention;
Fig. 2 is the arrangement schematic diagram of roller die group.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in figure 1, hot pull tandem rolling tubulation production line, the production line include setting gradually necking machine 2, roller die group 3, Pull rod device 7, mandrel bar loosening mill 8 and rod stripping machine 9, the pull rod device 7 include drive device, pull bar and core rod connecting device, plug Attachment means are arranged on one end of pull bar, and are arranged on the exit of roller die group 3, and core is additionally provided with the outlet of the roller die group 3 Rod separator 5.Wherein 12 be plug, and 16 be hollow hollow billet.The core rod connecting device of the present invention is adopted with plug separator With existing device, realize and connect plug with separating automatically, as Application No. 2014100538531 discloses a kind of bar certainly Dynamic clamping device, by the rotating speed for changing motor, you can clamping and release of the control collet to bar, can also use machinery The conventional manipulator jaw in field.
This production line also includes the punch 1 and clamping and conveying device 15 for being arranged on the porch of necking machine 2, and clamping and conveying device 15 uses Existing pinch roll, plug is clamped, and so as to subsequently penetrate hollow hollow billet, punch 1 is arranged on the side of production line.
After rod stripping machine 9, in addition to cooling device 10, lubricating arrangement 11, elongator 14 and the plug preheating set gradually Device 13, the cooling device 10 are arranged on the exit of rod stripping machine 9, and the plug preheating device 13 is arranged on necking machine 2 Porch, form the circulation of plug conveying.The present embodiment plug preheating device 13 uses preheating furnace.
In the present embodiment, the drive device includes main drive 6 and rack-and-pinion, and pull bar is arranged on tooth by deck On bar, and driven by main drive, so as to which plug is pulled by pull bar, can be moved with rack.
In the present embodiment, as shown in Fig. 2 the roller die group 3 includes several die holders 4, each die holder 4 is freely rolled by multiple Roller forms closed type, and each die holder 4 of the present embodiment has three and freely rolls rod, and the roller bottom of each adjacent die holder 4 or roll gap interlock Arrangement, its quantity and position calculate setting automatically according to different workpiece measurements.
Hot pull tandem rolling pipe-making method, plug is penetrated into hollow hollow billet, necking is carried out on the necking machine 2 on roll line, While necking, drive device drives pull bar, into bed is rolled, rod head is connected automatically by the outlet side of roller die group 3 and contracted Hollow hollow billet and plug after mouth is good, drive device driving pull bar pull the hollow hollow billet after necking to pass through one together with plug The die holder 4 of fixed number amount carries out continuous rolling, and after the completion of rolling, the hollow hollow billet with plug is all pulled out die holder 4 by pull bar, Outlet plug is walked the wire place, provided with plug separator 5, pull bar is separated into back stay with plug and continues to retreat extremely wait position, core Rod is dialed out on the front roller-way of mandrel bar loosening mill 8 together with hollow hollow billet, is transported to mandrel bar loosening mill 8 and is carried out loose rod, produces plug and hollow billet Raw gap, then extracts plug out by rod stripping machine 9.The plug of extraction carries out cold through apparatus for supercooling 10, lubricating arrangement 11 respectively But with lubrication, it is necessary to which the plug to repair a die is preheating to lubrication temperature by the processing of the roll off of elongator 14, then by plug preheating device 13 Spend, then circular treatment.Punch 1 puts on hollow hollow billet, clamps plug by clamping and conveying device 15 and penetrates hollow hollow billet.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be Various changes are made to it in form and in details, without departing from claims of the present invention limited range.

Claims (9)

1. hot pull tandem rolling tubulation production line, it is characterised in that:The production line includes setting gradually necking machine, roller die group, drawn Lever apparatus, mandrel bar loosening mill and rod stripping machine, the pull rod device include drive device, pull bar and core rod connecting device, plug connection dress The one end for being arranged on pull bar is put, and is arranged on the exit of roller die group, plug separation dress is additionally provided with the outlet of the roller die group Put.
2. hot pull tandem rolling tubulation production line according to claim 1, it is characterised in that:Also enter including being arranged on necking machine Punch and clamping and conveying device at mouthful, the punch are arranged on the side of production line.
3. hot pull tandem rolling tubulation production line according to claim 2, it is characterised in that:Also include the cooling set gradually Device, lubricating arrangement, elongator and plug preheating device, the cooling device are arranged on the exit of rod stripping machine, the plug Preheating device is arranged on the porch of necking machine, forms the circulation of plug conveying.
4. hot pull tandem rolling tubulation production line according to claim 1, it is characterised in that:The drive device includes main biography Dynamic device and rack-and-pinion, the pull bar is arranged on rack, and is driven by main drive.
5. hot pull tandem rolling tubulation production line according to claim 1, it is characterised in that:The roller die group includes several Die holder, each die holder form closed type, the roller bottom of each adjacent die holder or roll gap interlaced arrangement by multiple free rolls.
6. hot pull tandem rolling tubulation production line according to claim 5, it is characterised in that:Each die holder has three freedom Roll rod.
7. hot pull tandem rolling pipe-making method, it is characterised in that:Plug is penetrated into hollow hollow billet, necking is carried out on roll line, is contracted While mouth, drive device drives pull bar, into bed is rolled, rod head is connected necking automatically by the outlet side of roller die group Hollow hollow billet and plug after good, drive device driving pull bar pulls the hollow hollow billet after necking to pass through one together with plug The die holder of fixed number amount carries out continuous rolling, and after the completion of rolling, the hollow hollow billet with plug is all pulled out die holder by pull bar, is being gone out Mouthful plug is walked the wire place, provided with plug separator, pull bar is separated with plug to back stay and continued to retreat to wait position, plug and Hollow hollow billet dials out on mandrel bar loosening mill front roller-way together, is transported to mandrel bar loosening mill and carries out loose rod, plug and hollow billet is produced gap, so Plug is extracted out by rod stripping machine afterwards.
8. hot pull tandem rolling pipe-making method according to claim 7, it is characterised in that:The plug of extraction is cooled down and moistened Slide, it is necessary to which the plug to repair a die is handled by elongator roll off, then is preheating to lubrication temperature by core rod preheating furnace, then at circulation Reason.
9. the hot pull tandem rolling pipe-making method according to claim 7 or 8, it is characterised in that:Punch puts on hollow hollow billet, Plug is clamped by pinch roll and penetrates hollow hollow billet.
CN201710971809.2A 2017-10-18 2017-10-18 Hot pull tandem rolling tubulation production line and pipe-making method Pending CN107583954A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710971809.2A CN107583954A (en) 2017-10-18 2017-10-18 Hot pull tandem rolling tubulation production line and pipe-making method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710971809.2A CN107583954A (en) 2017-10-18 2017-10-18 Hot pull tandem rolling tubulation production line and pipe-making method

Publications (1)

Publication Number Publication Date
CN107583954A true CN107583954A (en) 2018-01-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710971809.2A Pending CN107583954A (en) 2017-10-18 2017-10-18 Hot pull tandem rolling tubulation production line and pipe-making method

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110722004A (en) * 2019-10-25 2020-01-24 绍兴东喆科技有限公司 Rolling method of metal pipe
CN114273447A (en) * 2021-11-23 2022-04-05 杰森能源技术有限公司 Method for manufacturing metal pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110722004A (en) * 2019-10-25 2020-01-24 绍兴东喆科技有限公司 Rolling method of metal pipe
CN110722004B (en) * 2019-10-25 2021-08-20 绍兴东喆科技有限公司 Rolling method of metal pipe
CN114273447A (en) * 2021-11-23 2022-04-05 杰森能源技术有限公司 Method for manufacturing metal pipe

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