CN201261025Y - Special-purpose equipment for seamless oil well steel tube restraint tandem rolling processing - Google Patents

Special-purpose equipment for seamless oil well steel tube restraint tandem rolling processing Download PDF

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Publication number
CN201261025Y
CN201261025Y CNU2007201319202U CN200720131920U CN201261025Y CN 201261025 Y CN201261025 Y CN 201261025Y CN U2007201319202 U CNU2007201319202 U CN U2007201319202U CN 200720131920 U CN200720131920 U CN 200720131920U CN 201261025 Y CN201261025 Y CN 201261025Y
Authority
CN
China
Prior art keywords
arc
frame
tandem rolling
steel tube
oil well
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2007201319202U
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Chinese (zh)
Inventor
张毅
宋建平
许彦
万立波
高连新
朴龙华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Seamless Oil Pipe Co Ltd
Original Assignee
Wuxi Seamless Oil Pipe Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Seamless Oil Pipe Co Ltd filed Critical Wuxi Seamless Oil Pipe Co Ltd
Priority to CNU2007201319202U priority Critical patent/CN201261025Y/en
Application granted granted Critical
Publication of CN201261025Y publication Critical patent/CN201261025Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides special equipment of seamless oil well pipe limiting tandem rolling processing, which can produce products with various specifications, comparatively speaking, the investment cost of the company is lowered. The special equipment comprises an annular heating furnace, a cone punch, a core bar cooling station, a limiting tandem mill and tube knockout machines. The special equipment is characterized in that five tube knockout machines are provided and are sequentially arranged behind the limiting tandem mill.

Description

The special equipment of seamless oil well steel tube restraint tandem rolling processing
(1) technical field
The utility model relates to the special equipment of seamless oil well steel tube restraint tandem rolling processing.
(2) background technology
Because the retained mandrel continuous rolling-tube unit has the automaticity height, production efficiency and recovery rate of iron height, wall thickness accuracy is characteristics preferably, worldwide are used widely.Present domestic production technology of steel tube flow process is that pipe is sawed-off, heating, perforation, restraint connect machine, take off tube core, heating, sizing, cold bed, sawing, production procedure is longer, operation of rolling temperature drop is big, the part steel pipe can't be realized controlled rolling and controlled cooling, reheating furnace be have to use, energy consumption and operating cost increased; Because the restriction of sizing mill frame, the quantity of rolling rod can not be too many, because the hole enlargement amount of sizing mill is little, so production specification is restricted, can only produce small-caliber steel pipe usually again, and the production product category is single, comparatively speaking the cost of investment height of equipment.
(3) summary of the invention
At the problems referred to above, the utility model provides the special equipment of seamless oil well steel tube restraint tandem rolling processing, and it can produce the product of all size, and the cost of investment of enterprise descends comparatively speaking.
Its technical scheme is such: it comprises belt heating furnace, bevel-type punch, plug cooling stations, restraint tandem rolling machine, winding arbor extraction press, it is characterized in that: described winding arbor extraction press has 5.
It is further characterized in that: after described 5 winding arbor extraction presses are installed on described restraint tandem rolling machine in proper order; The bodkin angle [alpha] of described piercing mandrel plug is 4.25 °; Described tandem mill has 5, and its pass of described five tandem mills is selected ellipse-circular hole system, and pass breaks away from arc R2, the second disengaging arc R4, connection arc R5 and corresponding roll gap S by bottom land arc R1, first and forms; Connect arc and roll gap place and set up knuckle; Wherein a, bottom land arc and the first disengaging arc are tangent; It is tangent that b, first breaks away from arc and bottom land arc and the second disengaging arc; C, second breaks away from the arc and the first disengaging arc inscribe, with to be connected arc circumscribed; D, connection arc are the public circle of contact arcs of the second disengaging arc and pass center line; The 4th frame of described five frame retained mandrel tandem mills, the 5th frame adopt circular arc sidewall circular hole without acceptance of persons respectively, and the 4th frame is identical with the 5th frame pass, it is characterized in that: first frame to the, three frames of described five frame retained mandrel tandem mills adopt and have eccentric oval groove, next frame eccentric throw is got half of a frame, the eccentric throw of first frame thick 0.645 times of the thin-walled of institute's rolled steel tube that is set to form a groove, the joint angle of second frame, the 3rd frame is set to 14 °; The joint angle of the 4th frame, the 5th frame is set to 9 °; Described winding arbor extraction press has 5; After described 5 winding arbor extraction presses are installed on described restraint tandem rolling machine in proper order.
In the said structure of the present utility model, the distortion reasonable distribution of perforation and tandem rolling unit, can realize the making of large and small bore steel pipe, help bringing into play to greatest extent the unit equipment ability, produce the seamless steel pipe of super designed capacity, saved the cost of acquiring of equipment for the user, thereby avoided existing process equipment, can only produce small-caliber steel pipe, the processing specification is few, the shortcoming that user's use cost is higher.
(4) description of drawings
Fig. 1 is the schematic diagram of equipment in the utility model;
Fig. 2 is the structural representation of piercing mandrel plug;
Fig. 3 is the structural representation of the pass of tandem mill.
(5) specific embodiment
See Fig. 1, Fig. 2, Fig. 3, the utility model comprises go in ring heating furnace 1, bevel-type punch 2, plug cooling stations 3, restraint tandem rolling machine 4, winding arbor extraction press 5, the bodkin angle [alpha] of punch 2 tops is 4.25 °, after winding arbor extraction press 5 has five orders to be installed on restraint tandem rolling machine 4.Tandem mill 4 has five, and five tandem mill 4 its passes are selected ellipse-circular hole system, and pass breaks away from arc R2, the second disengaging arc R4, connection arc R5 and corresponding roll gap S by bottom land arc R1, first and forms; Connect arc and roll gap place and set up knuckle; Wherein a, bottom land arc and the first disengaging arc are tangent; It is tangent that b, first breaks away from arc and bottom land arc and the second disengaging arc; C, second breaks away from the arc and the first disengaging arc inscribe, with to be connected arc circumscribed; D, connection arc are the public circle of contact arcs of the second disengaging arc and pass center line; In the five frame retained mandrel tandem mills, first frame to the, three frames adopt and have eccentric oval groove, next frame eccentric throw ECC gets half of a frame, the eccentric throw ECC of first frame thick 0.645 times of the thin-walled of institute's rolled steel tube that is set to form a groove, it is 14 ° that the joint angle of second frame, the 3rd frame is provided with α 4; Four, the 5th frame adopts circular arc sidewall circular hole without acceptance of persons, and the 4th frame is identical with the 5th frame pass, and the joint angle α 4 of the 4th frame, the 5th frame is set to 9 °.Carry out parameter configuration according to pass series during the processing steel pipe, by the external diameter of tandem mill rolled steel tube and the maximum ratio of wall thickness (D/t) is 42.5 to calculate design and can roll minimum wall thickness (MINI W.), calculate the total coefficient of elongation, each frame lengthening coefficient of reasonable distribution, it is long-pending that successive computations goes out each frame outlet steel tube section, determine each frame pass height, calculate corresponding each frame pass relevant parameter, concrete computational methods belong to the market prior art, α 1 is the first disengaging angle among Fig. 3, α 3 is the second disengaging angle, C1, C2, C4, C5 represents R1 respectively, R2, R4, the center of circle of R5, R10 represents the lead angle of 10mm.6 are the normalizing chain; 7 lead to saw and describe process of the present utility model below in conjunction with accompanying drawing for the saw front roller-way:
Behind pipe sawing scale, be promoted to 3 meters platforms by the vertical-lift chain, after transmission roller channel is delivered to the annular furnace heating with pipe, pipe heats a week in annular furnace after, the discharging clamp presss from both sides out pipe.Pipe is delivered to oblique elevator chain by transmission roller channel, and tiltedly elevator chain is promoted to the punch foreground with pipe.After pipe rolls into blow tank, by punch solid pipe is worn and to be hollow hollow billet.After material poking fork is allocated to anti-oxidant station spray borax, material poking fork is delivered to the prewire feed-through rod then.Plug-hollow billet after wearing in advance turn over to roll line through five frame tandem rollings, winding arbor extraction press is rolling then, when producing large-diameter pipe, can according to the reducing rate of winding arbor extraction press between 0~3.5%, select for use together or the twice winding arbor extraction press rolling, hollow forging arrives normalizing chain inlet through the winding arbor extraction press outlet, directly hollow forging is turned over to the normalizing chain, arrive vertical discharging chain after the online cooling and carry out discharging, arrive the sawing of pipe gang saw afterwards end to end by material poking fork; When producing small-caliber steel pipe; can between 0~3.5%, select for use the multiple tracks winding arbor extraction press to be rolled down to given size according to the reducing rate of winding arbor extraction press; hollow forging arrives normalizing chain inlet through the winding arbor extraction press outlet; directly hollow forging is turned over to the normalizing chain by material poking fork; online cooling back arrives vertical discharging chain and carries out discharging, arrives the sawing of pipe gang saw afterwards end to end.
Like this, same equipment, the user can select the rolling number of times of winding arbor extraction press according to the final size of steel pipe, because winding arbor extraction press is arranged continuously, so the temperature drop of steel pipe is little, does not need in the processing to heat again, so both saved operation, having saved the energy again can also maximized use equipment.

Claims (5)

1, the special equipment of seamless oil well steel tube restraint tandem rolling processing, it comprises belt heating furnace, bevel-type punch, plug cooling stations, restraint tandem rolling machine, winding arbor extraction press, described belt heating furnace, bevel-type punch, plug cooling stations, restraint tandem rolling machine, winding arbor extraction press are installed on support in proper order, it is characterized in that: described winding arbor extraction press has 5.
2, according to the described seamless oil well steel tube restraint tandem rolling special processing equipment of claim 1, it is characterized in that: after described 5 winding arbor extraction presses are installed on described restraint tandem rolling machine in proper order.
3, according to the described seamless oil well steel tube restraint tandem rolling special processing equipment of claim 2, it is characterized in that: the bodkin angle [alpha] of described piercing mandrel plug is 4.25 °.
4, according to the described seamless oil well steel tube restraint tandem rolling special processing equipment of claim 3, it is characterized in that: described tandem mill has 5.
5, according to the described seamless oil well steel tube restraint tandem rolling special processing equipment of claim 4, it is characterized in that: its pass of described 5 tandem mills is selected ellipse-circular hole system, and pass breaks away from arc R2, the second disengaging arc R4, connection arc R5 and corresponding roll gap S by bottom land arc R1, first and forms; Connect arc and roll gap place and set up knuckle; Wherein a, bottom land arc and the first disengaging arc are tangent; It is tangent that b, first breaks away from arc and bottom land arc and the second disengaging arc; C, second breaks away from the arc and the first disengaging arc inscribe, with to be connected arc circumscribed; D, connection arc are the public circle of contact arcs of the second disengaging arc and pass center line; The 4th frame of described five frame retained mandrel tandem mills, the 5th frame adopt circular arc sidewall circular hole without acceptance of persons respectively, and the 4th frame is identical with the 5th frame pass, it is characterized in that: first frame to the, three frames of described five frame retained mandrel tandem mills adopt and have eccentric oval groove, next frame eccentric throw is got half of a frame, the eccentric throw of first frame thick 0.645 times of the thin-walled of institute's rolled steel tube that is set to form a groove, the joint angle of second frame, the 3rd frame is set to 14 °; The joint angle of the 4th frame, the 5th frame is set to 9 °.
CNU2007201319202U 2007-12-25 2007-12-25 Special-purpose equipment for seamless oil well steel tube restraint tandem rolling processing Expired - Fee Related CN201261025Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201319202U CN201261025Y (en) 2007-12-25 2007-12-25 Special-purpose equipment for seamless oil well steel tube restraint tandem rolling processing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201319202U CN201261025Y (en) 2007-12-25 2007-12-25 Special-purpose equipment for seamless oil well steel tube restraint tandem rolling processing

Publications (1)

Publication Number Publication Date
CN201261025Y true CN201261025Y (en) 2009-06-24

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

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101468360B (en) * 2007-12-25 2012-05-23 无锡西姆莱斯石油专用管制造有限公司 Seamless oil well steel tube restraint tandem rolling processing equipment
CN102548677A (en) * 2009-09-30 2012-07-04 住友金属工业株式会社 Retract mandrel mill and method for rolling tubing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101468360B (en) * 2007-12-25 2012-05-23 无锡西姆莱斯石油专用管制造有限公司 Seamless oil well steel tube restraint tandem rolling processing equipment
CN102548677A (en) * 2009-09-30 2012-07-04 住友金属工业株式会社 Retract mandrel mill and method for rolling tubing
CN102548677B (en) * 2009-09-30 2014-05-14 新日铁住金株式会社 Retract mandrel mill and method for rolling tubing

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Effective date of registration: 20140922

Granted publication date: 20090624

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Date of cancellation: 20150322

Granted publication date: 20090624

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090624

Termination date: 20141225