CN111872112A - Two-stand reversible rolling device for rolling flat steel and steel rolling method thereof - Google Patents
Two-stand reversible rolling device for rolling flat steel and steel rolling method thereof Download PDFInfo
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- CN111872112A CN111872112A CN202010732984.8A CN202010732984A CN111872112A CN 111872112 A CN111872112 A CN 111872112A CN 202010732984 A CN202010732984 A CN 202010732984A CN 111872112 A CN111872112 A CN 111872112A
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- rolling
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- flat steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/0805—Flat bars, i.e. having a substantially rectangular cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
- B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a two-stand reversible rolling device for rolling flat steel and a steel rolling method thereof, belonging to the technical field of rolling of steel. The two-stand reversible rolling device comprises a stand and a guide device, and is characterized in that the guide device is connected with a rolling mill by adopting a space-adjustable clamping plate type and a mode of combining hydraulic drive and locking fixed phases. The two-stand reversible rolling method provided by the invention can be well used for rolling the square flat steel, the guide roller gap positioning precision of the device is high, the supporting force is strong, the rolled square flat steel has good appearance and high precision, and meanwhile, the stable operation of a workpiece on a roller way can be well ensured, and the quality problems of rhombus, distortion, error entry of a rolled piece into a hole pattern, bending and inclination, disordered penetration on the plane of a rolling mill and the like can be avoided.
Description
Technical Field
The invention belongs to the technical field of steel rolling, and particularly relates to a two-stand reversible rolling device for rolling flat steel and a steel rolling method thereof.
Background
The cogging mill is a two-roller reversible mill, is suitable for rough rolling, and is ideal mill equipment for rolling plain carbon steel, alloy steel, stainless steel, high-temperature alloy, copper, aluminum and the like. At present, the rolling mill equipment for realizing the metal rolling process mainly comprises a motor, a speed reducer, a two-roller reversible rolling mill, a tilting gear, a guide device and the like.
The conventional steel rolling process generally adopts a plurality of rolling units for continuous rolling, wherein in a continuous rolling production line, the continuous rolling unit is a core device of the whole production line and is a key for stable operation of the whole production line, and the continuous rolling unit has the advantages of complex equipment, high automation degree and high equipment precision and determines the production efficiency of the whole production line. The continuous rolling unit is formed by combining, distributing and cooperatively finishing the whole rolling process by a plurality of similar rolling mills.
In the steel rolling process, the rolling mill guide plate is a device for controlling rolled pieces to enter or leave a roller. The guide and guard are usually made of cast iron and, in the case of certain small rolling mills, also of steel. The rolling process must introduce the incoming product into the correct pass and raise it precisely to the correct height required to complete the rolling of the desired target steel part. Because the guide beam and the guide plate of the existing cogging mill are separated, the guide plate is generally directly placed on the guide beam when a roller is installed, and the head of the guide plate is contacted with the groove bottom of a roll pass. In the rolling process, the hole guide plates are not fixed, so that various defects exist. In modern rolling mills, the feeding speed of the finishing stand is very high, which is prone to faults, resulting in the rolled piece being mistakenly inserted into the pass and "bent" or being disorderly passed on the plane of the rolling mill, which is not only dangerous, but also causes great loss and waste in rolling time and materials. Meanwhile, the existing rolling mill guide and guard plate structure is difficult to roll square flat steel, and has the problems that the positioning precision of a guide roller gap is not high, a rolled piece is easy to deform and not uniform, the appearance of the rolled square flat steel is poor, the precision is not high and the like. Therefore, the structure of the existing rolling mill needs to be improved.
Disclosure of Invention
The present invention is directed to solving the above problems, and provides a two-stand reversible rolling apparatus for rolling flat steel and a rolling method thereof. The two-stand reversible rolling method provided by the invention can be well used for rolling the square flat steel, the guide roller gap positioning precision of the device is high, the supporting force is strong, the rolled square flat steel has good appearance and high precision, and meanwhile, the stable operation of a workpiece on a roller way can be well ensured, and the quality problems of rhombus, distortion, error entry of a rolled piece into a hole pattern, bending and inclination, disordered penetration on the plane of a rolling mill and the like can be avoided.
One of the purposes of the invention is to provide a two-stand reversible rolling device for rolling flat steel, which adopts the technical scheme that the two-stand reversible rolling device comprises a stand and a guide and guard device, and is characterized in that the guide and guard device is connected with a rolling mill in a mode of combining hydraulic drive and locking fixed phases.
Furthermore, the guide device is of a clamping plate type structure with adjustable distance.
Specifically, the guide device comprises an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are arranged between an upper cross beam and a lower cross beam of the rack, a left guide device and a right guide device are respectively arranged on two sides of the upper clamping plate and the lower clamping plate, and the upper clamping plate and the lower clamping plate are respectively fixed with the left guide device and the right guide device in a locking mode.
Specifically, a hydraulic drive guide adjusting device is installed on an upper cross beam of the rack, an adjusting rod is arranged on the guide adjusting device, the adjusting rod penetrates through the upper cross beam to be communicated with the upper clamping plate, and the adjusting rod is driven in a hydraulic drive mode to automatically adjust the position of the guide adjusting device.
The two-stand reversible rolling device provided by the invention has the advantages that the guide device adopts a space-adjustable clamping plate type and a hydraulic driving and locking fixing mode, so that the problems of the guide plate in the existing steel rolling process can be well solved, the guide roller gap positioning precision of the device is high, the supporting force is strong, the appearance of the rolled square flat steel is good, the precision is high, meanwhile, the stable operation of a workpiece on a roller way can be well ensured, and the quality problems of rhombus, distortion, mistaken entry of a rolled piece into a hole pattern, bending and random penetration on the plane of a rolling mill and the like can be avoided.
Furthermore, the front and back positions, the upper and lower positions and the left and right positions of the guide device correspond to the pass of the roller one by one, and the inlet guide, the flat roller and the outlet guide are kept at three points and one line.
Further, the rolling mill is a plurality of rolling mills, and the plurality of rolling mills comprise a common rolling mill or a short stress path rolling mill.
Further, the rolling mill comprises a motor for driving the rolling mill to work, a speed reducer, a frame, a guide of the reversible rolling mill and the like.
Further, the rack is composed of a vertical rack and a horizontal rack, and the vertical rack and the horizontal rack are both slotless.
Another object of the present invention is to provide a method for rolling square flat steel using the above two-stand reversible rolling apparatus, which comprises the steps of:
(1) a cogging mill is adopted to perform cogging on steel;
(2) and (3) rolling the billet obtained in the step (1) by adopting two frames to perform reversible rolling on the square flat steel, and adjusting the distance between two clamping plates of the guide device in a hydraulic driving mode.
Specifically, in the step (2), when the flat steel is rolled, the guide precision H +/-1 mm of the inlet and outlet of the vertical frame which is reversibly rolled by the two frames is controlled.
Compared with the prior art, the invention has the following beneficial effects:
(1) the guide and guard device adopts a hydraulic driving and locking fixing mode, so that the guide device has high strength and good stability, and can guide the incoming rolled piece into a correct hole pattern and accurately lift the rolled piece to the required correct height;
(2) the positioning precision of the guide roller gap in the device is high, the supporting force is strong, and the rolled square flat steel has good appearance and higher precision;
(3) the device can ensure that the rolled workpiece runs stably on the roller way, and quality problems of rhombus, distortion, error entry of the rolled piece into the hole pattern, bending and deflection, disordered penetration on the plane of the rolling mill and the like can be avoided in the rolling process.
Drawings
Fig. 1 is a schematic structural view of a guide and guard device of a reversible rolling mill of the present invention.
Wherein, 1 is the swing arm, 2 is leading and defending the support, 3 is the cardboard, 4 is the hydro-cylinder, 5 is the gland, 6 is synchronous pinion rack one, 7 is synchronous pinion rack two.
FIG. 2 is a schematic view of the guide and guard assembly of the present invention coupled to a frame;
wherein 8 is an upper clamping plate, 9 is a lower clamping plate 9, 10 is a frame, 11 is a left guide device, 12 is a right guide device, 13 is a guide position adjusting device, and 14 is an adjusting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments, and it should be noted that the following embodiments are only for explaining and illustrating the present invention and are not intended to limit the present invention. The invention is not limited to the embodiments described above, but rather, may be modified within the scope of the invention.
Example 1
The invention provides a two-stand reversible rolling device for rolling flat steel, which comprises a stand, a rolling mill reversibly arranged on the stand and a guide and guard device connected with the rolling mill, wherein the guide and guard device is in a structure shown in figure 1 (mainly the whole structure of the guide and guard device in the invention is introduced), wherein 1 is a swing arm, 2 is a guide and guard support, 3 is a clamping plate, 4 is an oil cylinder, 5 is a gland, 6 is a synchronous toothed plate I, and 7 is a synchronous toothed plate II.
The guide device is connected with the rolling mill by adopting a spacing-adjustable clamping plate type and a mode of combining a hydraulic drive and a locking fixed phase. Specifically, the guide device is arranged between an upper cross beam and a lower cross beam of the frame 10 through an upper clamping plate 8 and a lower clamping plate 9, a left guide device 11 and a right guide device 12 are respectively arranged on two sides of the upper clamping plate 8 and the lower clamping plate 9, and the upper clamping plate 8 and the lower clamping plate 9 are respectively fixed with the left guide device 11 and the right guide device 12 in a locking mode. The upper cross beam of the frame 10 is provided with a hydraulic driving position guide adjusting device 13, the position guide adjusting device is provided with an adjusting rod 14, the adjusting rod penetrates through the upper cross beam to be communicated with the upper clamping plate, and the position of the position guide adjusting device is automatically adjusted by driving the adjusting rod in a hydraulic driving mode.
Through the device, the front and back positions, the upper and lower positions and the left and right positions of the guide device can correspond to the pass of the roller one by one, three points and one line are kept for the inlet guide, the pass of the roller and the outlet guide, the rolling of the square flat steel is well realized, the positioning precision of the roll gap of the guide roller is high, the deformation is uniform, the appearance of the rolled square flat steel is good, the precision is higher, meanwhile, the stable operation of a workpiece on a roller way can be well ensured, and the quality problems of rhombus, distortion, mistaken entry of the rolled piece into the pass, bending and random penetration on the plane of the rolling mill and the like can be avoided. The rolling mill is a plurality of rolling mills, and the plurality of rolling mills are double-roller rolling mills. The frame comprises vertical frame and horizontal frame, all set up the roller groove on vertical frame and the horizontal frame.
The method for rolling the square flat steel by using the two-stand reversible rolling device comprises the following steps:
(1) a cogging mill is adopted to perform cogging on steel;
(2) and (3) rolling the billet obtained in the step (1) by adopting two frames to perform reversible rolling on the square flat steel, and adjusting the distance between two clamping plates of the guide device in a hydraulic driving mode.
In the step (2), when the flat steel is rolled, the position of the roller groove of the vertical frame which is reversibly rolled by the two frames is controlled to be 52.3 +/-0.3 mm, and the position of the roller groove of the horizontal frame is controlled to be 73.8 +/-0.3 mm.
Compared with the traditional reversible rolling (the guide beam and the guide plate are separated) of two frames, the device provided by the invention has the following advantages:
(1) the positioning precision of the guide roller gap in the device is high, the deformation is uniform, and the rolled square flat steel has good appearance and higher precision;
(2) the guide and guard device adopts a hydraulic driving and locking fixing mode, so that the guide device has high strength and good stability, and can guide the incoming rolled piece into a correct hole pattern and accurately lift the rolled piece to the required correct height;
(3) the device can ensure that the rolled workpiece runs stably on the roller way, and quality problems of rhombus, distortion, error entry of the rolled piece into the hole pattern, bending and deflection, disordered penetration on the plane of the rolling mill and the like can be avoided in the rolling process.
Experimental example 1
The device provided by the embodiment of the invention is adopted to roll the square flat steel,
the steel is made of high-temperature alloy, the device provided by the embodiment of the invention is adopted for rolling, whether the workpiece is deformed in 100 rolling processes is counted, the workpiece is recorded as deformed if the difference between the workpiece and the target size is more than 2mm, the deformation rate is examined, and the rolling is carried out by taking the traditional two-stand reversible rolling as comparison. The results show that: the deformation rate of steel rolling carried out by the device provided by the embodiment of the invention is 1.5%, and the deformation rate of the comparative example is 10%.
Experimental example 2
The device provided by the embodiment of the invention is adopted to roll the square flat steel,
the steel is selected from stainless steel for testing, the device provided by the embodiment of the invention is adopted for rolling, whether the workpiece is deformed in 100 rolling working processes is counted, the workpiece is recorded as deformed if the difference between the workpiece and the target size is more than 2mm, the deformation rate is examined, the traditional two-frame reversible rolling is used as contrast for rolling, and the result shows that: the deformation rate of steel rolling carried out by the device provided by the embodiment of the invention is 0.5%, and the deformation rate of the comparative example is 5%.
By adopting the guide and guard device, square flat steel rolling work for one year is carried out, the production condition and the accident condition within one year are counted, and the following technical effects are obtained:
the device thoroughly prevents rolled pieces from being punched out of the guide, avoids the phenomena of mistaken entry of the rolled pieces into the hole pattern and bending or random penetration on the plane of the rolling mill, avoids the accident that the rolled pieces are punched out of the guide plate in the production process, improves the production efficiency and reduces the labor intensity. Compared with the traditional device originally used in the factory, the replacement frequency of the guide and guard plate is reduced by about 300 times every year by the improvement of the invention, and the accident rate is 0.
Claims (10)
1. A two-stand reversible rolling device for rolling flat steel comprises a stand and a guide device, and is characterized in that the guide device is connected with a rolling mill in a mode of combining hydraulic drive and locking fixed phases.
2. Two-stand reversible rolling device for rolling flat steel according to claim 1, characterized in that said guide and guard device is of the gap-adjustable sandwich-plate type construction.
3. The two-stand reversible rolling device for rolling square steel slabs according to claim 2, wherein said guide and guard device comprises an upper and a lower clamping plate, said upper and lower clamping plates being arranged between the upper and lower cross beams of the stand, and a left and a right guide means being respectively mounted on both sides of the upper and lower clamping plates, and the upper and lower clamping plates being respectively fixed with the left and right guide means by locking.
4. The two-stand reversible rolling device for rolling square flat steel according to claim 3, characterized in that a hydraulically driven position guide adjusting device is mounted on the upper cross beam of the stand, an adjusting rod is arranged on the position guide adjusting device, the adjusting rod passes through the upper cross beam and is communicated with the upper clamping plate, and the position of the position guide adjusting device is automatically adjusted by driving the adjusting rod in a hydraulic driving manner.
5. The two-stand reversible rolling apparatus for rolling square steel strips according to claim 4, wherein the front and rear positions, the upper and lower positions, and the left and right positions of the guide and guard device are in one-to-one correspondence with the pass of the rolls, and the entry guide and guard, the pass of the rolls, and the exit guide and guard maintain three points in one line.
6. The two-stand reversible rolling device for rolling flat steel according to claim 1, characterized in that said rolling mill is a multi-stand, said rolling mill comprising a normal rolling mill or a short stress line rolling mill.
7. Two-stand reversible rolling device for rolling flat steel according to claim 1, characterized in that said rolling mill comprises motors for driving the rolling mill in operation, speed reducers, stands, guides and guards of the reversible rolling mill, etc.
8. The two-stand reversible rolling device for rolling flat steel according to claim 1, characterized in that said stands consist of vertical stands and horizontal stands, both of which are slotless.
9. A method for rolling square flat steel using the two-stand reversing rolling mill according to any one of claims 1 to 7, comprising the steps of:
(1) a cogging mill is adopted to perform cogging on steel;
(2) and (3) rolling the billet obtained in the step (1) by adopting two frames to perform reversible rolling on the square flat steel, and adjusting the distance between two clamping plates of the guide device in a hydraulic driving mode.
10. The method according to claim 9, wherein in the step (2), the vertical stand guide precision H +/-1 mm of the reversible rolling of the two stands is controlled when the flat steel rolling is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010732984.8A CN111872112A (en) | 2020-07-27 | 2020-07-27 | Two-stand reversible rolling device for rolling flat steel and steel rolling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010732984.8A CN111872112A (en) | 2020-07-27 | 2020-07-27 | Two-stand reversible rolling device for rolling flat steel and steel rolling method thereof |
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| CN111872112A true CN111872112A (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010732984.8A Pending CN111872112A (en) | 2020-07-27 | 2020-07-27 | Two-stand reversible rolling device for rolling flat steel and steel rolling method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351657A (en) * | 2021-06-23 | 2021-09-07 | 河北津西钢板桩型钢科技有限公司 | Universal pre-bending continuous rolling guide and guard device and universal continuous rolling mill |
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| JPH0699213A (en) * | 1992-09-21 | 1994-04-12 | Kotobuki Sangyo Kk | Roller guide |
| JPH06126318A (en) * | 1992-10-20 | 1994-05-10 | Kotobuki Sangyo Kk | Roller guide for vertical mill |
| CN102513380A (en) * | 2011-12-30 | 2012-06-27 | 杭州富特带钢有限公司 | Rolling mill guide mechanism |
| CN202539211U (en) * | 2012-01-10 | 2012-11-21 | 合肥东方节能科技股份有限公司 | Two-or-three segmentation guiding device |
| CN106513435A (en) * | 2016-12-05 | 2017-03-22 | 重集团大连设计研究院有限公司 | Mould flat steel continuous reversible rolling machine unit and mould flat steel rolling method |
| CN106807763A (en) * | 2015-11-27 | 2017-06-09 | 北京京诚瑞信长材工程技术有限公司 | A kind of pinch roll structural assembly |
| CN110064672A (en) * | 2019-04-15 | 2019-07-30 | 燕山大学 | Drive lacking link-type pinch mechanism |
| CN209363295U (en) * | 2018-12-19 | 2019-09-10 | 西安盛日机电科技有限公司 | Guide and guards for grooveless rolling motor band steel |
| CN209491185U (en) * | 2019-01-15 | 2019-10-15 | 合肥市锐迪冶金机械有限公司 | Intelligent vertical roller guide and guard unit |
| CN110709179A (en) * | 2017-05-04 | 2020-01-17 | 达涅利机械设备股份公司 | Device and method for guiding metal products |
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2020
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0699213A (en) * | 1992-09-21 | 1994-04-12 | Kotobuki Sangyo Kk | Roller guide |
| JPH06126318A (en) * | 1992-10-20 | 1994-05-10 | Kotobuki Sangyo Kk | Roller guide for vertical mill |
| CN102513380A (en) * | 2011-12-30 | 2012-06-27 | 杭州富特带钢有限公司 | Rolling mill guide mechanism |
| CN202539211U (en) * | 2012-01-10 | 2012-11-21 | 合肥东方节能科技股份有限公司 | Two-or-three segmentation guiding device |
| CN106807763A (en) * | 2015-11-27 | 2017-06-09 | 北京京诚瑞信长材工程技术有限公司 | A kind of pinch roll structural assembly |
| CN106513435A (en) * | 2016-12-05 | 2017-03-22 | 重集团大连设计研究院有限公司 | Mould flat steel continuous reversible rolling machine unit and mould flat steel rolling method |
| CN110709179A (en) * | 2017-05-04 | 2020-01-17 | 达涅利机械设备股份公司 | Device and method for guiding metal products |
| CN209363295U (en) * | 2018-12-19 | 2019-09-10 | 西安盛日机电科技有限公司 | Guide and guards for grooveless rolling motor band steel |
| CN209491185U (en) * | 2019-01-15 | 2019-10-15 | 合肥市锐迪冶金机械有限公司 | Intelligent vertical roller guide and guard unit |
| CN110064672A (en) * | 2019-04-15 | 2019-07-30 | 燕山大学 | Drive lacking link-type pinch mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351657A (en) * | 2021-06-23 | 2021-09-07 | 河北津西钢板桩型钢科技有限公司 | Universal pre-bending continuous rolling guide and guard device and universal continuous rolling mill |
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Application publication date: 20201103 |