CN101112707A - Process for the dynamic regulation of top head front-extending quantity - Google Patents
Process for the dynamic regulation of top head front-extending quantity Download PDFInfo
- Publication number
- CN101112707A CN101112707A CNA2007100169927A CN200710016992A CN101112707A CN 101112707 A CN101112707 A CN 101112707A CN A2007100169927 A CNA2007100169927 A CN A2007100169927A CN 200710016992 A CN200710016992 A CN 200710016992A CN 101112707 A CN101112707 A CN 101112707A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- push rod
- time
- head front
- top head
- 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.)
- Granted
Links
Landscapes
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a method dynamically adjusting the front extension quantity of the top head. The invention is characterized in that the invention includes the steps of the record parameters, the automatic supplementation of the abrasion quantity of the top head diameter, the automatic supplementation of the top head and rolling hot expansion which can adopt the closed ring control method or adopt the trend control method and the automatic supplementation of the top rod length L; the front extension quantity is dynamically adjusted in the production clearance time and production time of the pipe expanding or perforation, thus implementing the precision control to the wall thickness of the steel pipe, ensuring the same produced steel pipe have uniform wall thickness and the same batch of steel pipes have basically uniform wall thickness.
Description
Technical field:
The present invention relates to the seamless steel tube production technical field, is a kind of method of dynamic adjustment top head front-extending quantity specifically, is used for the perforation and the expander operation of seamless steel pipe.
Technical background:
At present, in the trasistor manufacture process of seamless steel pipe, perforation and expander are two important plastic deformation operations, and this plastic deformation is finished in pass, and usually pass all is to be made of a pair roller, two godets or guide plate and a top.Its deformation principle: the roll of active rotation is with nip deformed area and the wall of the lumen in the deformed area is carried out roll off repeatedly with the top of supplied materials pipe or hollow billet, impel thickness of steel pipe attenuate, diameter in the deformed area to become big, length extension, and guide plate or godet play guiding and auxiliary control progradation therein.Measure with top head front-extending quantity the position that wherein comes directly towards in pass, and top head front-extending quantity mainly plays decision and shuts out the thickness of steel pipe size.The present perforation and the top head front-extending quantity of expander all are changeless in tube rolling or perforation procedure, and the thickness of steel pipe that shuts out in theory or pass is constant, but owing to be subjected to the influence of following factor, it is uneven causing the thickness of steel pipe that shuts out or pass:
1. roll, top expanded by heating in rolling or perforation procedure make the thickness of steel pipe that shuts out or pass be the thin variation tendency of a thick tail;
2. the top is in expander or perforation procedure repeatedly, can be gradually wearing and tearing and diameter diminishes, therefore expand also thickening gradually of the thickness of steel pipe that or pass;
3. under the situation of top circulation, diameter difference, the rate of wear difference of different tops cause the different thickness of steel pipe that expand or pass inconsistent;
4. under the situation of push rod and top circulation, the length of different push rods is inconsistent, causes the different thickness of steel pipe that expand or pass inconsistent.
Summary of the invention:
The objective of the invention is to overcome the deficiency of above-mentioned prior art, and a kind of method of dynamic adjustment top head front-extending quantity is provided, mainly solve the inconsistent end to end problem of the wall thickness that is prone to same batch of steel pipe in existing seamless steel tube production technological process wall thickness inconsistent and same Zhi Gangguan.
For achieving the above object, the present invention is achieved in that a kind of method of dynamic adjustment top head front-extending quantity, and its special character is that it comprises the steps:
The a recording parameters; Each push rod that participates in circulation is numbered, host computer can be remembered the priority position of push rod in the space automatically, also can be by the push rod different push rod of automatic identifier identification of encoding, write down the steel pipe number N that each top produces with this, the angle [alpha] of the original outer diameter D of each top, the equal wall section in top, top rate of wear V, the push rod length L;
The automatic compensation of b top diameter wear extent; The equal wall section cone angle of top is α, and the top diameter D rate of wear is V, and unit: mm/ props up, and the top produces number N, vary in diameter amount Δ D=V * N then, and Δ D unit is mm, corresponding top head front-extending quantity H offset Δ H=Δ D/2/TAN (α); This compensation is finished producing in off time;
The automatic compensation of c top, thermal expansion of rollers; Can adopt closed loop control method, also can employing trend control method;
Closed loop control method is that a calibrator is set on the backstage of expander or perforation, measure the wall thickness that expands the back or wear the back steel pipe in good time, to the multiple spot wall thickness of continuous measurement average Sp and with standard value So relatively, draw wall thickness difference DELTA S=Sp-So, calculate top head front-extending quantity H offset Δ H=Δ S/TAN (α) thus, carrying out this compensation finishes with t in the time in production rolling (on-load) second, come directly towards adjusted thickness of steel pipe by behind the calibrator, automatically the multiple spot wall thickness of measuring steel pipe again average Spi and with standard value So relatively, draw wall thickness difference DELTA Si=Spi-So, calculate top head front-extending quantity H offset Δ Hi=Δ Si/TAN (α) thus; So circulation is carried out, to this steel pipe rolling end;
Trend control method is in the expander or the same Zhi Gangguan process of boring a hole, the total from the beginning to the end trend of thickness of steel pipe is attenuation gradually, when detecting roll transmission master motor load arranged, pick up counting, surpass the T1 of setting after the time when the time, the servo-drive system that top head front-extending quantity is adjusted in control in the time, retreats the distance, delta H of setting at the T2 that sets equably, and this compensation is finished in the time at steel pipe rolling; Can adjust the size of T1, T2 and Δ H by whether even before and after the in good time curve of the electric current that detects later process, even before and after the in good time curve of the electric current of later process;
The automatic compensation of d push rod length L; If the physical length of push rod is L, theoretical length is L
0, Dui Ying top head front-extending quantity H offset Δ H=L then
0-L; This compensation is finished producing in off time.
Compared with the prior art the method for a kind of dynamic adjustment top head front-extending quantity of the present invention has outstanding substantive distinguishing features and marked improvement, 1, by in production off time of expander or perforation and production time, top head front-extending quantity dynamically being adjusted, thereby realize the accurate control to thickness of steel pipe, promptly top head front-extending quantity is an automatic and adjustable; 2, this method has advantages such as reliability height, adaptability and autgmentability are strong, and same thickness of steel pipe of production is even, and the wall thickness extreme difference of whole Zhi Gangguan is not more than 0.7mm, is not more than 1mm with the wall thickness extreme difference of a collection of steel pipe.
The specific embodiment:
In order to understand better and to implement, describe the method for a kind of dynamic adjustment top head front-extending quantity of the present invention in detail below in conjunction with embodiment.
Embodiment 1, in expander's process flow of seamless steel tube production, at first each push rod that participates in circulation is numbered, host computer can be remembered the priority position of push rod in the space automatically, also can be by the push rod different push rod of automatic identifier identification of encoding, write down the steel pipe number N that each top produces with this, the original outer diameter D of each top, unit is the angle [alpha] of mm, the equal wall section in top, top rate of wear V, unit: mm/ props up, the push rod length L, and unit is mm; Then come directly towards vary in diameter amount Δ D=V * N, Δ D unit is mm, corresponding top head front-extending quantity H offset Δ H=Δ D/2/TAN (α), and the automatic compensation of this top diameter wear extent can be finished in production off time; Adopt closed loop control method to the top, the automatic compensation of thermal expansion of rollers, closed loop control method is that a calibrator is set on the backstage of expander, measure the wall thickness that expands the back steel pipe in good time, to the multiple spot wall thickness of continuous measurement average Sp and with standard value So relatively, draw wall thickness difference DELTA S=Sp-So, calculate top head front-extending quantity H offset Δ H=Δ S/TAN (α) thus, carrying out this compensation finishes with t in the time in production rolling (on-load) second, come directly towards adjusted thickness of steel pipe by behind the calibrator, automatically the multiple spot wall thickness of measuring steel pipe again average Spi and with standard value So relatively, draw wall thickness difference DELTA Si=Spi-So, calculate top head front-extending quantity H offset Δ Hi=Δ Si/TAN (α) thus; So circulation is carried out, to this steel pipe rolling end; To the automatic compensation of push rod length L, if the physical length of push rod is L, theoretical length is L at last
0, Dui Ying top head front-extending quantity H offset Δ H=L then
0-L, this compensation is finished producing in off time.
Embodiment 2, in the poling technological process of seamless steel tube production, at first each push rod that participates in circulation is numbered, host computer can be remembered the priority position of push rod in the space automatically, also can be by the push rod different push rod of automatic identifier identification of encoding, write down the steel pipe number N that each top produces with this, the original outer diameter D of each top, unit is the angle [alpha] of mm, the equal wall section in top, top rate of wear V, unit: mm/ props up, the push rod length L, and unit is mm; Then come directly towards vary in diameter amount Δ D=V * N, Δ D unit is mm, corresponding top head front-extending quantity H offset Δ H=Δ D/2/TAN (α), and the automatic compensation of this top diameter wear extent can be finished in production off time; Employing trend control method is to the automatic compensation of top, thermal expansion of rollers, trend control method is in the same Zhi Gangguan process of perforation, the total from the beginning to the end trend of thickness of steel pipe is attenuation gradually, when detecting roll transmission master motor load arranged, pick up counting, the T1 that surpass to set when the time is after the time, and the servo-drive system that top head front-extending quantity is adjusted in control is at the T2 that sets in the time, retreat the distance, delta H of setting equably, this compensation was finished in the production time; Can adjust the size of T1, T2 and Δ H by whether even before and after the in good time curve of the electric current that detects later process, even before and after the in good time curve of the electric current of later process; To the automatic compensation of push rod length L, if the physical length of push rod is L, theoretical length is L at last
0, Dui Ying top head front-extending quantity H offset Δ H=L then
0-L, this compensation is finished producing in off time.
Claims (1)
1. a method of dynamically adjusting top head front-extending quantity is characterized in that it comprises the steps:
The a recording parameters; Each push rod that participates in circulation is numbered, host computer can be remembered the priority position of push rod in the space automatically, also can be by the push rod different push rod of automatic identifier identification of encoding, write down the steel pipe number N that each top produces with this, the angle [alpha] of the original outer diameter D of each top, the equal wall section in top, top rate of wear V, the push rod length L;
The automatic compensation of b top diameter wear extent; The equal wall section cone angle of top is α, and the top diameter D rate of wear is V, and unit: mm/ props up, and the top produces number N, vary in diameter amount Δ D=V * N then, and Δ D unit is mm, corresponding top head front-extending quantity H offset Δ H=Δ D/2/TAN (α); This compensation is finished producing in off time;
The automatic compensation of c top, thermal expansion of rollers; Can adopt closed loop control method, also can employing trend control method;
Closed loop control method is that a calibrator is set on the backstage of expander or perforation, measure the wall thickness that expands the back or wear the back steel pipe in good time, to the multiple spot wall thickness of continuous measurement average Sp and with standard value So relatively, draw wall thickness difference DELTA S=Sp-So, calculate top head front-extending quantity H offset Δ H=Δ S/TAN (α) thus, carrying out this compensation finishes with t in producing rolling time second, come directly towards adjusted thickness of steel pipe by behind the calibrator, automatically the multiple spot wall thickness of measuring steel pipe again average Spi and with standard value So relatively, draw wall thickness difference DELTA Si=Spi-So, calculate top head front-extending quantity H offset Δ Hi=Δ Si/TAN (α) thus; So circulation is carried out, to this steel pipe rolling end;
Trend control method is in the expander or the same Zhi Gangguan process of boring a hole, the total from the beginning to the end trend of thickness of steel pipe is attenuation gradually, when detecting roll transmission master motor load arranged, pick up counting, surpass the T1 of setting after the time when the time, the servo-drive system that top head front-extending quantity is adjusted in control in the time, retreats the distance, delta H of setting at the T2 that sets equably, and this compensation is finished in the time at steel pipe rolling; Can adjust the size of T1, T2 and Δ H by whether even before and after the in good time curve of the electric current that detects later process, even before and after the in good time curve of the electric current of later process;
The automatic compensation of d push rod length L; If the physical length of push rod is L, theoretical length is L
0, Dui Ying top head front-extending quantity H offset Δ H=L then
0-L; This compensation is finished producing in off time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100169927A CN100515594C (en) | 2007-08-31 | 2007-08-31 | Process for the dynamic regulation of top head front-extending quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100169927A CN100515594C (en) | 2007-08-31 | 2007-08-31 | Process for the dynamic regulation of top head front-extending quantity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101112707A true CN101112707A (en) | 2008-01-30 |
| CN100515594C CN100515594C (en) | 2009-07-22 |
Family
ID=39021329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100169927A Expired - Fee Related CN100515594C (en) | 2007-08-31 | 2007-08-31 | Process for the dynamic regulation of top head front-extending quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100515594C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513359A (en) * | 2011-12-23 | 2012-06-27 | 太原重工股份有限公司 | Seamless steel tube perforator piercing point on-line regulating device |
| CN107774715A (en) * | 2016-08-30 | 2018-03-09 | 林州凤宝管业有限公司 | The double chi production technology of the pipes of vehicle bridge pipe Φ 220 |
| CN113441551A (en) * | 2021-06-30 | 2021-09-28 | 北京科技大学 | Thick-walled seamless steel pipe and preparation method thereof |
-
2007
- 2007-08-31 CN CNB2007100169927A patent/CN100515594C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513359A (en) * | 2011-12-23 | 2012-06-27 | 太原重工股份有限公司 | Seamless steel tube perforator piercing point on-line regulating device |
| CN102513359B (en) * | 2011-12-23 | 2014-03-19 | 太原重工股份有限公司 | Seamless steel tube perforator piercing point on-line regulating device |
| CN107774715A (en) * | 2016-08-30 | 2018-03-09 | 林州凤宝管业有限公司 | The double chi production technology of the pipes of vehicle bridge pipe Φ 220 |
| CN107774715B (en) * | 2016-08-30 | 2019-11-05 | 林州凤宝管业有限公司 | The double ruler production technology of 220 pipe of vehicle bridge pipe Φ |
| CN113441551A (en) * | 2021-06-30 | 2021-09-28 | 北京科技大学 | Thick-walled seamless steel pipe and preparation method thereof |
| CN113441551B (en) * | 2021-06-30 | 2022-07-01 | 北京科技大学 | Thick-walled seamless steel pipe and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100515594C (en) | 2009-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103921065B (en) | A kind of manufacture method of automobile specified seamless steel pipe | |
| CN104259206B (en) | A kind of production method of the titanium alloy seamless pipe for tubing coupling | |
| CN100515594C (en) | Process for the dynamic regulation of top head front-extending quantity | |
| CN108856305B (en) | Load distribution method for non-oriented silicon steel production rolling mill | |
| CN103170506B (en) | Hot rolling and finish rolling multi-level threading speed control method | |
| CN103722042A (en) | Preparation device and method for Ti6A14V alloy flat filament | |
| CN101444793B (en) | Method for fabricating seamless steel pipes for large-diameter high-pressure gas cylinders used in trailer production | |
| CN101020191A (en) | Hot rolling process of seamless steel pipe | |
| CN101823075A (en) | Rolling method for sharpening head and tail wall thickness of seamless steel tube | |
| CN101711190A (en) | Seamless pipe manufacturing method | |
| CN106216400A (en) | The external diameter roll seamless steel tube Processes and apparatus installation system more than 60mm | |
| CN105290281A (en) | Production method for large thick-wall nickel-contained ring forgings | |
| WO2011030273A2 (en) | Plant for rolling tubes | |
| EP2442923B1 (en) | Tube rolling plant | |
| CN107138532A (en) | A kind of drilling/rolling method and special equipment for producing thin-wall seamless steel pipe | |
| CN113664048A (en) | Method for judging and controlling strip steel rollover during pressure measurement of rough rolling vertical roll of hot continuous rolling mill | |
| JPS63230214A (en) | Pipe rolling control method | |
| JPS58196109A (en) | Method for elongation rolling of steel pipe | |
| CN113664049B (en) | Control method for preventing strip steel from turning over during pressure measurement of rough rolling vertical roll of hot continuous rolling mill | |
| JPS62202712A (en) | Method of extruding parison and its device | |
| CN1116133C (en) | Method for controlling length and position of mandrel in use | |
| SU944703A1 (en) | Tube production method | |
| JP2001340910A (en) | Manufacturing method of seamless steel pipe | |
| JPS6216812A (en) | Tube rolling control method | |
| SU1720766A1 (en) | Pilger tube rolling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20170831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |