CN101386123A - Cooling strain prevention technique of profiled bar - Google Patents
Cooling strain prevention technique of profiled bar Download PDFInfo
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- CN101386123A CN101386123A CNA2008100212137A CN200810021213A CN101386123A CN 101386123 A CN101386123 A CN 101386123A CN A2008100212137 A CNA2008100212137 A CN A2008100212137A CN 200810021213 A CN200810021213 A CN 200810021213A CN 101386123 A CN101386123 A CN 101386123A
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Abstract
The invention discloses an anti-cooling deformation manufacturing technique of profiled steel bars, which comprises the steps of: the rolling of steel billet materials by a rolling machine, cooling by a cold bed, straightening by a straightening machine, final finishing and collecting. Before the cold-bed cooling process in the manufacturing processes of the profiled steel bars, a reverse direction pre-bending process is added, that is: a rolled piece is pre-bent along the direction reverse to a natural deformation direction after being cooled, and the curvature of the reverse direction pre-bending need to ensure that the rolled piece can enter the straightening machine for straightening after natural cooling. The manufacturing technique has the advantages that: the reverse direction pre-bending process of the rolled piece is added to the original manufacturing processes of the profiled steel bars so that the rolled piece has a smaller curvature after being cooled by the next process and an improved yield after being straightened and can meet the requirements of the manufacturing technique of profiled steel bars.
Description
Technical field
The present invention relates to a kind of anti-cooling deformation technique of special section.
Background technology
Special section is a kind of comparatively widely product of national commercial Application, along with the fast development of equipment manufacture, the requirement of special section is also being improved constantly, particularly can be longer to the length requirement of long material deformed steel.The technological process of production of special section is at present: use mill milling after the steel billet materials moulding, align through straightener after the cooling to cold bed then, finishing tough is collected, and what come out has been exactly finished product.Some deformed steel such as flat-bulb steel peculiar to vessel on the market is maximum length with 12 meters mainly now, flat-bulb steel peculiar to vessel is a kind of non-symmetrical section structure, aborning when it comes out to enter the process that cold bed cools off from milling train, because its section is asymmetric, cause the cooling velocity on its both sides different, thereby cause that flat-bulb steel is to a certain direction flexural deformation, we are referred to as nature cooling deformation direction this crooked deformation direction, the radian of the long more bending of special section is also big more, after the amount of bow of special section exceeds after the aligning scope of the straightener in road, straightener can't be aligned it, adopts above-mentioned process just can't satisfy the production demand so.
Summary of the invention
The object of the present invention is to provide a kind of anti-cooling deformation technique that can obviously improve the rolled piece lumber recovery and can produce the special section of longer deformed steel.
Technical scheme of the present invention is, the anti-cooling deformation technique of described special section, comprise: the mill milling of steel billet materials, cold bed cooling, straightener aligning, finishing and collecting, be characterized in: before the cold bed refrigerating work procedure in the special section production technology, add the operation of pre-bending in the other direction together, that is: rolled piece is carried out opposite direction pre-bending in the opposite direction to cooling off deformation side naturally, and the amount of bow of pre-bending in the other direction should be able to guarantee that rolled piece can enter the straightener aligning after the cold bed cooling.
Further technical scheme of the present invention is, makes the natural torsion deformation quantity of generation in amount of bow that rolled piece carries out pre-bending in the other direction and the rolled piece cooling suitable.
Advantage of the present invention is: the opposite direction pre-bending operation that has increased by one rolled piece on original deformed steel production technology, like this after rolled piece is through the next procedure cooling, flexibility will diminish, again through behind the straightener aligning, final lumber recovery obviously improves, and can satisfy the manufacturing requirements of longer special section.
Description of drawings
Fig. 1 is the concrete application structure schematic diagram that the pre-bending device that is adopted in the production technology is out of shape in the anti-cooling of special section of the present invention;
Fig. 2 is the structural representation of a pre-bending dolly in the pre-bending device shown in Figure 1.
Wherein: 1, variable-frequency motor, 2, encoder, 3, cut somebody's hair, 4, groove, 5, clamp 6, travelling car, 7, support, 8, vehicle guide, 9, chain guide, 10, chain, 11, tensioning apparatus, 12, drive sprocket, 13, driven sprocket, 14, special section, B
1～B
n, the pre-bending dolly.
The specific embodiment
In conjunction with the accompanying drawings and embodiments technology of the present invention is illustrated.
The anti-cooling distortion production technology of special section, comprise: the mill milling of steel billet materials, pre-bending in the other direction, the cold bed cooling, the straightener aligning, finishing and collecting, wherein except that opposite direction pre-bending operation, all the other these several procedures are identical with the production technology of original special section, characteristics of the present invention are: before the cold bed refrigerating work procedure in the special section production technology, increased the operation of pre-bending in the other direction together, that is: rolled piece is carried out opposite direction pre-bending in the opposite direction to cooling off deformation side naturally, and the amount of bow of pre-bending in the other direction should be able to guarantee that rolled piece can enter the straightener aligning after the cold bed cooling.
Fig. 1 is that the pre-bending device that the operation of pre-bending is in the other direction adopted in the production technology is out of shape in the anti-cooling of special section of the present invention, and pre-bending device is by several pre-bending dolly B that is set up in parallel
1～B
nForm, the quantity of pre-bending dolly B can be determined according to the length of the special section of being produced, to guarantee the opposite direction pre-bending amount of special section.
Fig. 2 is the pre-bending dolly in the pre-bending device shown in Figure 1, the structure of each pre-bending dolly B is: the support 7 of pre-bending dolly B is provided with variable-frequency motor 1 and vehicle guide 8, the output shaft of variable-frequency motor 1 is provided with drive sprocket 12, vehicle guide 8 is provided with travelling car 6, one end of chain 10 is fixed on the travelling car 6, after walking around the driven sprocket that is arranged on the support 13 and be arranged on drive sprocket 12 on the variable-frequency motor 1, the other end is fixed on the other end of travelling car 6, be equipped with on the travelling car 6 and cut somebody's hair 3 and clamp 5, on clamp 5, be provided with groove 4 with 3 positions of matching of cutting somebody's hair.
The operation principle of above-mentioned pre-bending device is: when entering after special section 14 roll formings before cold bed cools off, earlier special section 14 is sent on each clamp 5 among the pre-bending device B of said structure, and the special-shaped protruding end that makes special section 14 just in time falls into each groove that cooperates with it 4, naturally cool off the natural deformation sweep that is produced according to special section, design the sweep of the special section reverse strain of sening as an envoy in advance, configure the stroke of each travelling car 6 of the corresponding position of reverse strain sweep therewith according to this reverse strain sweep again, when making each travelling car 6 arrive the position, stroke end, each position is connected the formed curve in back, and the reverse strain sweep is corresponding therewith, start each travelling car 6 at last, that is: start variable-frequency motor 1, making output shaft drive drive sprocket 12 rotates, drive sprocket 12 drives chain 10 rotations, chain 10 drives travelling car 6 again and moves, travelling car 6 again by cut somebody's hair 3 and clamp 5 special section 14 that drives relevant positions move.After each travelling car 6 arrived the position of setting, pre-bending had in the other direction just taken place in whole special section 14, and shown in the left-hand broken line among Fig. 1, just predefined reverse strain sweep is corresponding with it for the degree of its pre-bending in the other direction.The special section 14 that will carry out above-mentioned opposite direction pre-bending is sent into cold bed and is cooled off, the natural deformation of its generation will with above-mentioned opposite direction pre-bending deformation basic neutralisation, easier of straightener aligning after cooling, thus the final lumber recovery of special section can be improved greatly.
Claims (2)
1, the anti-cooling distortion production technology of special section, comprise: the mill milling of steel billet materials, cold bed cooling, straightener aligning, finishing and collecting, it is characterized in that: before the cold bed refrigerating work procedure in the special section production technology, add the operation of pre-bending in the other direction together, that is: rolled piece is carried out opposite direction pre-bending in the opposite direction to cooling off deformation side naturally, and the amount of bow of pre-bending in the other direction should be able to guarantee that rolled piece can enter the straightener aligning after the cold bed cooling.
2, the anti-cooling of special section according to claim 1 distortion production technology is characterized in that: make the natural torsion deformation quantity of generation in amount of bow that rolled piece carries out pre-bending in the other direction and the rolled piece cooling suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100212137A CN101386123A (en) | 2008-07-21 | 2008-07-21 | Cooling strain prevention technique of profiled bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100212137A CN101386123A (en) | 2008-07-21 | 2008-07-21 | Cooling strain prevention technique of profiled bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101386123A true CN101386123A (en) | 2009-03-18 |
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ID=40475901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100212137A Pending CN101386123A (en) | 2008-07-21 | 2008-07-21 | Cooling strain prevention technique of profiled bar |
Country Status (1)
| Country | Link |
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| CN (1) | CN101386123A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042050A (en) * | 2012-12-28 | 2013-04-17 | 江阴大地装备股份有限公司 | Pre-bending device of cooling table |
| CN103785717A (en) * | 2012-10-31 | 2014-05-14 | 英业达科技有限公司 | Plate forming method and forming die used with same |
| CN107377641A (en) * | 2017-07-28 | 2017-11-24 | 河钢股份有限公司邯郸分公司 | A kind of cold bed pre-bending method before rail is strong |
| CN107962086A (en) * | 2017-11-30 | 2018-04-27 | 山信软件股份有限公司 | A kind of rolled piece pre-bending control method and device |
| CN111468911A (en) * | 2020-04-07 | 2020-07-31 | 中冶东方工程技术有限公司 | Steel rail finishing method and production line |
-
2008
- 2008-07-21 CN CNA2008100212137A patent/CN101386123A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785717A (en) * | 2012-10-31 | 2014-05-14 | 英业达科技有限公司 | Plate forming method and forming die used with same |
| CN103042050A (en) * | 2012-12-28 | 2013-04-17 | 江阴大地装备股份有限公司 | Pre-bending device of cooling table |
| CN107377641A (en) * | 2017-07-28 | 2017-11-24 | 河钢股份有限公司邯郸分公司 | A kind of cold bed pre-bending method before rail is strong |
| CN107962086A (en) * | 2017-11-30 | 2018-04-27 | 山信软件股份有限公司 | A kind of rolled piece pre-bending control method and device |
| CN111468911A (en) * | 2020-04-07 | 2020-07-31 | 中冶东方工程技术有限公司 | Steel rail finishing method and production line |
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Open date: 20090318 |