CN110773564A - Method and system for rolling large-specification incoming long material on continuous rolling long material production line - Google Patents
Method and system for rolling large-specification incoming long material on continuous rolling long material production line Download PDFInfo
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- CN110773564A CN110773564A CN201910944476.3A CN201910944476A CN110773564A CN 110773564 A CN110773564 A CN 110773564A CN 201910944476 A CN201910944476 A CN 201910944476A CN 110773564 A CN110773564 A CN 110773564A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 138
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000013072 incoming material Substances 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
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- 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
- B21B39/18—Switches for directing work in metal-rolling mills or trains
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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
- B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B2001/022—Blooms or billets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/22—Pass schedule
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a method and a system for rolling a large-specification incoming long material on a continuous rolling long material production line. The method comprises the following steps: 1) increasing the size of the incoming material by 10-50%; 2) adding a flat rolling mill before the first rolling mill of the original rolling line or at the position where the distance between any two rolling mills meets the condition; 3) and a torsion guide is arranged behind the flat rolling mill. The invention increases rolling passes in limited space and construction time; a flat rolling mill is added in front of the first rolling mill of the original rolling line or at the position where the distance between any two rolling mills meets the condition, the size of the fed material is correspondingly increased, the original equipment and arrangement of the rolling mills do not need to be changed, and the method is the most economical transformation mode. In order to minimize the influence on the subsequent rolling before the rolling mill is added, a torsion guide is required to be added after the rolling mill is added, and torsion of a certain angle is completed in a limited stroke so as to meet the condition of entering the subsequent rolling mill.
Description
Technical Field
The invention discloses a method for rolling a large-size blank long material by utilizing a torsional guide, and particularly relates to a flexibly-arranged short stress path rolling mill and the torsional guide.
Background
For the existing continuous rolling long product production line, effective ways for improving the production efficiency comprise increasing the size of the initial rolling blank, improving the rolling speed of each pass and the like. If the rolling passes are not changed after the blank is enlarged, the deformation rate of each pass needs to be improved, and meanwhile, the matched rolling mill and motor equipment are replaced, so that higher equipment investment and longer production delay time are inevitably brought; if the mode of increasing the rolling pass (the number of rolling mills) is adopted, the adopted mode needs to enlarge the field and rearrange and install the rolling mills, even if the original rolling mills are not replaced, the construction amount of civil engineering and structures is larger, and the production is delayed for a long time.
Disclosure of Invention
In order to overcome the above disadvantages, the present invention provides a method and a system for rolling large-size incoming long material on a long material production line by continuous rolling, which saves time, labor and economic cost,
in order to achieve the aim, the invention discloses a method for rolling a large-specification incoming long material on a continuous rolling long material production line, which comprises the following steps:
1) increasing the size of the incoming material by 10-50%;
2) adding a flat rolling mill before the first rolling mill of the original rolling line or at the position where the distance between any two rolling mills meets the condition;
3) and a torsion guide is arranged behind the flat rolling mill.
Preferably, the flat rolling mill is a short stress path horizontal rolling mill, and a torsion guide is arranged behind the short stress path horizontal rolling mill.
Preferably, the twisting guide twists the blank by a certain angle of 0-90 degrees and then enters a subsequent rolling mill.
Preferably, the length and width of the supplied materials are both larger than 150 mm.
Preferably, the flat rolling mill is connected to a previous rolling mill through a guide beam or is arranged on an independent foundation behind the previous rolling mill.
In order to achieve the above object, the present invention provides a large-specification incoming long material rolling system for a continuous rolling long material production line, comprising:
adding a flat rolling mill before the first rolling mill of the original rolling line or at the position where the distance between any two rolling mills meets the condition; arranging a torsion guide behind the flat rolling mill; wherein, the size of the received incoming material of the first rolling mill is increased by 10 to 50 percent compared with the original size.
Preferably, the flat rolling mill is a short stress path horizontal rolling mill, and a torsion guide is arranged behind the short stress path horizontal rolling mill.
Preferably, the twisting guide twists the blank by a certain angle of 0-90 degrees and then enters a subsequent rolling mill.
Preferably, the length and width of the supplied materials are both larger than 150 mm.
Preferably, the flat rolling mill is connected to a previous rolling mill through a guide beam or is arranged on an independent foundation behind the previous rolling mill.
The invention increases the rolling passes (namely the number of rolling mills) in limited space and construction time, does not change the arrangement of the original rolling mills, does not need to increase the floor area of a factory building, and is one of the most economic improvement means which can minimize the production stop loss. A flat rolling mill is added in front of the first rolling mill of the original rolling line or at the position where the distance between any two rolling mills meets the condition, the size of the fed material is correspondingly increased, the original equipment and arrangement of the rolling mills do not need to be changed, and the method is the most economical transformation mode. In order to minimize the influence on the subsequent rolling before the rolling mill is added, a torsion guide is required to be added after the rolling mill is added, and torsion of a certain angle is completed in a limited stroke so as to meet the condition of entering the subsequent rolling mill.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Example 1
The original productivity is 20 ten thousand tons per year, and the finished product of the deformed steel bar is rolled into a deformed steel bar continuous rolling production line with the specification of phi 10mm and two divisions by using a square blank of 120mm multiplied by 120 mm. 7 frames of the original roughing mill, 8 frames of the original intermediate rolling mill and 6 frames of the original finishing mill are all horizontal rolling mills. At present, a short stress line rolling mill and a torsion guide are added at a position 3m away from the front of a first roughing mill, a flying shear is added at the position of a 3# flying shear at the front of a finishing mill to meet the requirement of higher shearing speed, other equipment and arrangement are not required to be changed, the original first pass and newly-added pass hole pattern systems are changed through rolling pass adjustment, the size of a blank can be increased to 150mm multiplied by 150mm, and the capacity can reach 30 ten thousand tons per year. The rolling line is designed as shown in figure 1, and the rough rolling part of the hole type system comprises: r0 is h is 100.0-120.0 mm, w is 150.0-180.0 mm, s is 20.0-30.0 mm, the materials enter R1 after being twisted by 90 degrees, h is 110.0-130.0 mm, w is 120.0-140.0 mm, s is 15.0-25.0 mm, the materials are respectively ellipse-square-ellipse-round after passing R2-R7, phi 50mm round is formed, wherein 90 degrees of twisting guide is used after an elliptical hole, and 45 degrees of twisting guide is used after a square hole. The initial rolling temperature of rough rolling is 1150 +/-30 ℃. Designing a hole pattern system and rolling a middle rolling part: i8 empty, I9 elliptical holes followed by 90 ° twist guides, I10 round holes with diameter 37.5, I11 empty, I12 elliptical holes followed by 90 ° guides. I13 is a phi 30 round hole, h is 25.0-35.0 mm, w is 25.0-35.0 mm, s is 3.0-7.0 mm, I14 is a flat roll, h is 13.0-20, 0mm, w is 30.0-40.0 mm, then a 90 DEG torsional guide is used, I15 is a box-shaped hole, h is 22.0-30.0 mm, w is 18.0-22.0 mm, s is 3.0-6.0 mm, then a 90 DEG torsional guide is used, and the open rolling temperature of medium rolling is 1100 +/-30 ℃. Finish rolling part in pass system: f16 is a precut split pass, h is 15.0-20.0 mm, w is 25.0-35.0 mm, s is 2.0-3.0 mm, F17 is a split pass, h is 12.0-16.0 mm, w is 30.0-35.0 mm, s is 0.5-2.0 mm, F18 is an oval double pass, h is 6.0-10.0 mm, w is 18.0-25.0 mm, s is 1.5-2.0 mm, then 90 DEG twisted double guide, F19 is a round double pass, h is 10.0-13.0 mm, w is 10.0-13.0 mm, s is 1.5-3.0 mm, F20 is a double pass, h is 5.5-7.0 mm, h is 10.0-10.0 mm, w is 10.0-13.0 mm, s is 1.5-3.0 mm, F20 is a double pass, h is 5.0.0.0.0-7.0 mm, h is 10.00-10.0.0 mm, w is 10.00 DEG, F369 DEG is 10.0mm, F3600-10.0 mm, F3600 is a round double pass, w is a finish rolling temperature is 10.00 + -2 mm, w is 10.00-10.0 mm, and a round double pass.
Example 2
The original production line is a continuous rolling production line which can produce 7# angle steel by square billets with the diameter of 100mm multiplied by 100mm and the capacity of the continuous rolling production line is 15 ten thousand tons per year. The original 6 frames of the roughing mill, the original 6 frames of the intermediate rolling mill and the original 6 frames of the finishing mill are all arranged horizontally and vertically in an alternating mode. Two short stress line horizontal rolling mills are additionally arranged in front of a first roughing mill, a torsion guide is respectively arranged behind each rolling mill, a short stress line horizontal rolling mill is additionally arranged in front of a middle rolling mill, and a torsion guide is arranged behind the middle rolling mill. The size of the blank can be increased to 150mm multiplied by 150mm by changing the pass system of the original rough rolling 6 passes and the newly added passes through rolling pass adjustment without changing other equipment and arrangement.
By adopting the rolling method, the specification and the yield of the blank can be obviously improved at lower cost, the production efficiency and the stability are improved, and the product quality is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. A method for rolling large-specification incoming long materials on a continuous rolling long material production line is characterized by comprising the following steps:
1) increasing the size of the incoming material by 10-50%;
2) adding a flat rolling mill before the first rolling mill of the original rolling line or at the position where the distance between any two rolling mills meets the condition;
3) and a torsion guide is arranged behind the flat rolling mill.
2. The method as claimed in claim 1, wherein the flat rolling mill is a short stress path horizontal rolling mill followed by a torsional guide.
3. The method as claimed in claim 1, wherein the twist guide twists the slab by a predetermined angle of 0 to 90 ° before entering the subsequent rolling mill.
4. The method of claim 1 wherein the incoming length and width dimensions are greater than 150 mm.
5. A method for rolling large-specification incoming long materials on a continuous rolling long material production line is characterized in that a flat rolling mill is connected with a previous rolling mill through a guide and guard beam or is arranged on an independent foundation behind the previous rolling mill.
6. A continuous rolling, long product production line, large incoming long product rolling system, comprising:
adding a flat rolling mill before the first rolling mill of the original rolling line or at the position where the distance between any two rolling mills meets the condition; arranging a torsion guide behind the flat rolling mill; wherein, the size of the received incoming material of the first rolling mill is increased by 10 to 50 percent compared with the original size.
7. The large format long product rolling system of continuous rolling line as claimed in claim 1 wherein the flat rolling mill is a short stress path horizontal rolling mill followed by a torsional guide.
8. The large format long product rolling system of continuous rolling line as claimed in claim 1 wherein the twist guide twists the billet through a certain angle of 0 ° to 90 ° into the subsequent rolling mill.
9. The large format incoming long product rolling system of a continuous rolling long product line of claim 1, wherein the incoming lengths and widths are each greater than 150 mm.
10. The large-specification incoming long material rolling system of the continuous rolling long material production line is characterized in that the flat rolling mill is connected with a previous rolling mill through a guide and guard beam or is arranged on an independent foundation behind the previous rolling mill.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944476.3A CN110773564A (en) | 2019-09-30 | 2019-09-30 | Method and system for rolling large-specification incoming long material on continuous rolling long material production line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910944476.3A CN110773564A (en) | 2019-09-30 | 2019-09-30 | Method and system for rolling large-specification incoming long material on continuous rolling long material production line |
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| CN110773564A true CN110773564A (en) | 2020-02-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102179402A (en) * | 2011-03-29 | 2011-09-14 | 山西太钢不锈钢股份有限公司 | Twisting method utilizing online idle rolling mill to twist oval rolled piece |
| CN202045159U (en) * | 2011-04-10 | 2011-11-23 | 合肥东方节能科技股份有限公司 | Steel rolling system provided with non-twisting interchange rolling piece guide device |
| CN104923560A (en) * | 2015-05-28 | 2015-09-23 | 柳州钢铁股份有限公司 | Pass system for rolling round steel |
| CN105382026A (en) * | 2015-12-18 | 2016-03-09 | 重庆麦拓科技有限公司 | Short stress path rolling mill |
-
2019
- 2019-09-30 CN CN201910944476.3A patent/CN110773564A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102179402A (en) * | 2011-03-29 | 2011-09-14 | 山西太钢不锈钢股份有限公司 | Twisting method utilizing online idle rolling mill to twist oval rolled piece |
| CN202045159U (en) * | 2011-04-10 | 2011-11-23 | 合肥东方节能科技股份有限公司 | Steel rolling system provided with non-twisting interchange rolling piece guide device |
| CN104923560A (en) * | 2015-05-28 | 2015-09-23 | 柳州钢铁股份有限公司 | Pass system for rolling round steel |
| CN105382026A (en) * | 2015-12-18 | 2016-03-09 | 重庆麦拓科技有限公司 | Short stress path rolling mill |
Non-Patent Citations (1)
| Title |
|---|
| 中国重型机械工业协会编: "《中国重型机械选型手册 冶金及重型锻压设备》", 31 March 2015, 冶金工业出版社 * |
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Application publication date: 20200211 |