CN104001731A - Method for controlling iron mould at outlet of intermediate rolling adopting complete pass-free rolling - Google Patents
Method for controlling iron mould at outlet of intermediate rolling adopting complete pass-free rolling Download PDFInfo
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- CN104001731A CN104001731A CN201410235908.0A CN201410235908A CN104001731A CN 104001731 A CN104001731 A CN 104001731A CN 201410235908 A CN201410235908 A CN 201410235908A CN 104001731 A CN104001731 A CN 104001731A
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Abstract
The invention discloses a method for controlling an iron mould at an outlet of intermediate rolling adopting complete pass-free rolling. An intermediate rolling mill set comprises a 7# horizontal mill, a 8# vertical mill, a 9# horizontal mill, a 10# vertical mill, a 11# horizontal mill and a 12# vertical mill, wherein the horizontal mill is used as the outlet of a rolled piece of an intermediate rolling stage; the 12# rolling mill set is kept vacant; a rolling reduction of each pass of the 7# mill to the 11# mill is increased; the rolled piece of which a ratio of the size of the section in a horizontal direction to the size of the section in a vertical direction is greater than 1.5 is formed at the outlet of the 11# mill. According to the method for controlling the iron mould at the outlet of intermediate rolling adopting complete pass-free rolling disclosed by the invention, the intermediate rolling adopts pass-free rolling completely, uses spare mills and spare rollers of small numbers, consumes less rollers; additionally, the rolled piece is not twisted after a last rolling pass of the intermediate rolling.
Description
Technical field
Outlet swage control method while the present invention relates to roll completely without groove rolling in bar.
Background technology
At present most domestic bar thick in the production line arranged of milling train horizontally and vertically alternative while using grooveless rolling technology to carry out the production of regular screw threads steel, in general employing, roll latter two passage and be have the rolling of pass or in roll two kinds of milling methods such as whole employing grooveless rollings.
While rolling the milling method of whole employing grooveless rollings in use, in shut out mouthful material type for closely square, adopt this kind of method rolled piece through in can produce slight torsion after rolling last passage rolling, rolled piece in be rolled to while moving between finishing mill, the windup-degree of rolled piece can continue to increase.The angle of rolled piece at No. 2 flying shear places and while nipping finish rolling milling train is uncontrollable.But after workpiece front end is nipped, rolled piece can be at extremely short time intort, and the contact-making surface of rolled piece and top and bottom rolls stabilizes to grooveless rolling face or anapsid side.Because the torsion of rolled piece and uncontrollable has caused several problems: (1) because of rolled piece reverse after angle difference in the time cutting for No. 2, in No. 2 flying shear shear histories, when cutting edge contacts from rolled piece, the residing position of cutting edge is different.In the time that cutting edge contacts with rolled piece diagonal angle, instantaneous shearing force maximum, can cause haircut bending.(2) if the thickness difference on rolled piece width, short transverse, rolled piece is being nipped after No. 13 milling trains, the stable face of nipping difference, the width dimensions of No. 13 milling train outlet rolled pieces is also just inconsistent, the lengthening coefficient of No. 13 milling trains is just not identical, and the heap between No. 12 to No. 13 milling trains draws steel situation just to change along with the difference of the stable face of nipping of rolled piece.
If if in roll latter two passage and adopt and have groove rolling, outlet material type is subcircular, frame quantity for subsequent use is many, roll waste is large, cost rolls up.
Summary of the invention
In order to overcome the deficiencies in the prior art, technical problem to be solved by this invention adopts a kind of outlet swage control method while rolling completely without groove rolling in special, standby host that can be a large amount of, standby roller quantity, and rolled piece through in can not reverse after rolling last one rolling.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
In outlet swage control method while rolling completely without groove rolling, intermediate mill comprises 7# horizontal mill, 8# vertical mill, 9# horizontal mill, 10# vertical mill, 11# horizontal mill, 12# vertical mill, it is characterized in that, using 11# horizontal mill as in roll stage rolled piece outlet, vacant 12# milling train, the drafts that increases the each passage of 7# ~ 11#, goes out interruption-forming section horizontal direction size and the rolled piece of vertical direction dimension ratio more than 1.5 at 11# milling train.
Wherein, the rolled piece section horizontal direction size and the vertical direction dimension ratio that go out interruption-forming at 11# milling train are 2.5.
Wherein, 7# horizontal mill rolled piece section horizontal direction is out 1.93 with vertical direction size ratio; 8# vertical mill rolled piece section vertical direction is out 1.31 with horizontal direction size ratio; 9# horizontal mill rolled piece section horizontal direction is out 1.97 with vertical direction size ratio; 10# vertical mill rolled piece section vertical direction is out 1.32 with horizontal direction size ratio; 11# horizontal mill rolled piece section horizontal direction size is out 1.89 with vertical direction size ratio.
Compared with prior art, the present invention has following beneficial effect:
In roll whole employing grooveless rollings, standby host, standby roller quantity are few, roller consumption is low.Rolled piece can not produce torsion from enter mm finishing mill unit 13# milling train after the rolling of 11# horizontal mill machine time, rolled piece in remain on the position of rolling surface in upper and lower surface in being rolled to the running of finish rolling, therefore rolled piece is difficult for elbow after No. 2 flying shears are sheared, and each root rolled piece is the finishing mill first sub-level milling train of nipping of the stable state taking upper and lower surface as the face of nipping all, finish rolling entirety swage is stable.In addition due to 11# milling train outlet rolled piece height little, finishing mill first sub-level milling train the first reduction in pass is few, roll wear amount is just better few, the swage that is more conducive to mm finishing mill unit is stable.
Brief description of the drawings
Fig. 1 is the present invention's rolled piece generalized section after 11# mill milling;
When Fig. 2 is production 18mm diameter thread, 7# milling train is to the swage control program figure of 13# milling train.
Detailed description of the invention
By describing technology contents of the present invention, structural feature in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
Referring to Fig. 1, is the present invention's rolled piece generalized section after 11# mill milling.In outlet swage control method while rolling completely without groove rolling, intermediate mill comprises 7# horizontal mill, 8# vertical mill, 9# horizontal mill, 10# vertical mill, 11# horizontal mill, 12# vertical mill, using 11# horizontal mill as in roll stage rolled piece outlet, vacant 12# milling train group, increase the drafts of the each passage of 7# ~ 11#, go out interruption-forming section horizontal direction size and the rolled piece of vertical direction dimension ratio more than 1.5 at 11# milling train, the 13# horizontal mill group that rolled piece enters the finish rolling stage from intermediate mill out.
In the above-described embodiments, the rolled piece section horizontal direction size and the vertical direction dimension ratio that go out interruption-forming at 11# milling train are 2.5.
With reference to figure 2, Fig. 2 is the swage control program figure of No. 7 milling train to 13 milling trains while producing 18mm diameter thread.Here, 7# horizontal mill rolled piece section horizontal direction is out 1.93 with vertical direction size ratio; 8# vertical mill rolled piece section vertical direction is out 1.31 with horizontal direction size ratio; 9# horizontal mill rolled piece section horizontal direction is out 1.97 with vertical direction size ratio; 10# vertical mill rolled piece section vertical direction is out 1.32 with horizontal direction size ratio; 11# horizontal mill rolled piece section horizontal direction size is out 1.89 with vertical direction size ratio.
In the present invention, in roll whole employing grooveless rollings, standby host, standby roller quantity are few, roller consumption is low.Rolled piece from not producing torsion after the rolling of 11# horizontal mill machine, rolled piece in remain on the position of rolling surface in upper and lower surface in being rolled to the running of finish rolling, therefore rolled piece is difficult for elbow after No. 2 flying shears are sheared, and each root rolled piece is the finishing mill first sub-level milling train of nipping of the stable state taking upper and lower surface as the face of nipping all, finish rolling entirety swage is stable.In addition due to 11# milling train outlet rolled piece height little, finishing mill first sub-level milling train the first reduction in pass is few, roll wear amount is just better few, the swage that is more conducive to mm finishing mill unit is stable.
The above; only for preferably detailed description of the invention of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (3)
1. the outlet swage control method while rolling completely without groove rolling in, intermediate mill comprises 7# horizontal mill, 8# vertical mill, 9# horizontal mill, 10# vertical mill, 11# horizontal mill, 12# vertical mill, it is characterized in that, using 11# horizontal mill as in roll stage rolled piece outlet, vacant 12# milling train, the drafts that increases the each passage of 7# ~ 11#, goes out interruption-forming section horizontal direction size and the rolled piece of vertical direction dimension ratio more than 1.5 at 11# milling train.
2. the outlet swage control method while rolling completely without groove rolling according to claim 1, is characterized in that, the rolled piece section horizontal direction size and the vertical direction dimension ratio that go out interruption-forming at 11# milling train are 2.5.
3. the outlet swage control method while rolling completely without groove rolling according to claim 1, is characterized in that, 7# horizontal mill rolled piece section horizontal direction is out 1.93 with vertical direction size ratio; 8# vertical mill rolled piece section vertical direction is out 1.31 with horizontal direction size ratio; 9# horizontal mill rolled piece section horizontal direction is out 1.97 with vertical direction size ratio; 10# vertical mill rolled piece section vertical direction is out 1.32 with horizontal direction size ratio; 11# horizontal mill rolled piece section horizontal direction size is out 1.89 with vertical direction size ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235908.0A CN104001731A (en) | 2014-05-30 | 2014-05-30 | Method for controlling iron mould at outlet of intermediate rolling adopting complete pass-free rolling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410235908.0A CN104001731A (en) | 2014-05-30 | 2014-05-30 | Method for controlling iron mould at outlet of intermediate rolling adopting complete pass-free rolling |
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| CN104001731A true CN104001731A (en) | 2014-08-27 |
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| CN201410235908.0A Pending CN104001731A (en) | 2014-05-30 | 2014-05-30 | Method for controlling iron mould at outlet of intermediate rolling adopting complete pass-free rolling |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61286002A (en) * | 1985-06-14 | 1986-12-16 | Nippon Kokan Kk <Nkk> | Rough rolling method for steel rod and wire |
| JP2005000934A (en) * | 2003-06-10 | 2005-01-06 | Daido Steel Co Ltd | Method for manufacturing round corner flat square rolled material |
| CN101007315A (en) * | 2007-01-18 | 2007-08-01 | 湖南华菱涟源钢铁有限公司 | Non-groove rolling technology of horizontal mill |
| CN201044925Y (en) * | 2006-07-31 | 2008-04-09 | 刘京华 | Imperforate groove torsion-free continuous mill |
| CN102240672A (en) * | 2011-05-25 | 2011-11-16 | 西安盛日机电科技有限公司 | Process for producing high-speed wire rod by adopting grooveless rolling |
| CN202343553U (en) * | 2011-11-24 | 2012-07-25 | 承德建龙特殊钢有限公司 | Round steel tandem rolling unit |
| CN103341487A (en) * | 2013-07-01 | 2013-10-09 | 中冶赛迪工程技术股份有限公司 | High-speed wire rod compact type non-porous rolling production line and production method |
-
2014
- 2014-05-30 CN CN201410235908.0A patent/CN104001731A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61286002A (en) * | 1985-06-14 | 1986-12-16 | Nippon Kokan Kk <Nkk> | Rough rolling method for steel rod and wire |
| JP2005000934A (en) * | 2003-06-10 | 2005-01-06 | Daido Steel Co Ltd | Method for manufacturing round corner flat square rolled material |
| CN201044925Y (en) * | 2006-07-31 | 2008-04-09 | 刘京华 | Imperforate groove torsion-free continuous mill |
| CN101007315A (en) * | 2007-01-18 | 2007-08-01 | 湖南华菱涟源钢铁有限公司 | Non-groove rolling technology of horizontal mill |
| CN102240672A (en) * | 2011-05-25 | 2011-11-16 | 西安盛日机电科技有限公司 | Process for producing high-speed wire rod by adopting grooveless rolling |
| CN202343553U (en) * | 2011-11-24 | 2012-07-25 | 承德建龙特殊钢有限公司 | Round steel tandem rolling unit |
| CN103341487A (en) * | 2013-07-01 | 2013-10-09 | 中冶赛迪工程技术股份有限公司 | High-speed wire rod compact type non-porous rolling production line and production method |
Non-Patent Citations (1)
| Title |
|---|
| 杜哲: "无孔型轧制压下规程设计及成形过程数值模拟", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑 》 * |
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Application publication date: 20140827 |
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