CN103551392B - For transmission device and the drive method thereof of cold rolled strip steel production line - Google Patents
For transmission device and the drive method thereof of cold rolled strip steel production line Download PDFInfo
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- CN103551392B CN103551392B CN201310598129.2A CN201310598129A CN103551392B CN 103551392 B CN103551392 B CN 103551392B CN 201310598129 A CN201310598129 A CN 201310598129A CN 103551392 B CN103551392 B CN 103551392B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 91
- 239000010959 steel Substances 0.000 title claims abstract description 91
- 230000005540 biological transmission Effects 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- 208000034699 Vitreous floaters Diseases 0.000 claims description 87
- 239000010960 cold rolled steel Substances 0.000 claims description 37
- 238000003466 welding Methods 0.000 claims description 8
- 238000005097 cold rolling Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention provides a kind of transmission device for cold rolled strip steel production line and control method thereof, the described transmission device for cold rolled strip steel production line adopts some showy devices to manufacture continuous print blast, enable cold-strip steel contactlessly transmission in oven, strengthen the cured effect of oven to cold-strip steel, considerably increase the surface quality of cold-strip steel; The present invention also adopts the specification of cold-strip steel described in control system Real-time Obtaining, transmission speed and passes in and out the weld seam signal of described oven, can to the blast of the cold-strip steel of different size in time automatically needed for the showy device of adjustment, make the transmission of cold-strip steel more smooth, improve the efficiency that it is produced, and avoid showy device blast too small, excessive or switching time is incorrect time the accident that may cause, improve the security that it is produced.
Description
Technical Field
The invention relates to a device for a strip steel production line, in particular to a transmission device for a cold-rolled strip steel production line and a control method thereof.
Background
With the needs of continuously developing high-specification and high-added-value products in the industries of automobiles, power equipment, building materials, municipal administration and the like for realizing industrial upgrading, the requirements on the surface quality of upstream steel raw materials, particularly various cold-rolled strips, are higher and higher; in the existing cold-rolled strip steel processing line, the strip steel transmission generally adopts a roller and motor (contact type) transmission mode, and the mode can not meet the requirements of silicon steel, certain special stainless steel strips and other products with coated surfaces on the surface quality.
Disclosure of Invention
The invention provides a transmission device for a cold-rolled strip steel production line and a control method thereof, which realize non-contact transmission of cold-rolled strip steel by adopting wind pressure.
In order to achieve the above object, the present invention provides a transmission control device for a cold-rolled strip steel production line, which is arranged in a baking oven of the cold-rolled strip steel production line, wherein a transmission carrier roller is arranged outside the baking oven near an inlet and an outlet of the baking oven, the transmission control device comprises a plurality of floaters, a floater fan and a control system, the floaters are arranged in a line at equal intervals, the two floaters at two ends of the floaters are respectively near the inlet and the outlet of the baking oven, the floaters are connected with the floater fan, the floater fan is in telecommunication connection with the control system, the control system is used for obtaining the specification and the transmission speed of the cold-rolled strip steel and the welding line signal of the cold-rolled strip steel entering and exiting the baking oven, and obtaining the wind pressure set value of the floaters and the switching time of the set value through, and meanwhile, the air pressure of the floater is adjusted to the set value by controlling the rotating speed of the floater fan.
Further, the total length of the baking oven is 146 meters, the number of the floaters is 18, the distance between each two floaters is 6 meters, and the distance between the floaters closest to the inlet of the baking oven and the inlet of the baking oven is 36.3 meters.
The invention also provides a control method for the transmission control device for the cold-rolled strip steel production line, which comprises the following steps:
the method comprises the following steps: when a new roll of cold-rolled steel strip reaches the inlet of the baking furnace, the product specification and the running speed of the roll of cold-rolled steel strip and a welding line signal of the roll of cold-rolled steel strip entering the baking furnace are obtained through a control system;
step two: the new roll of cold-rolled strip steel is continuously transmitted in the baking furnace, the control system calculates the wind pressure set value of the floater according to the specification of the new roll of cold-rolled strip steel, meanwhile, the specification of the new roll of cold-rolled strip steel is compared with the specification of the previous roll of cold-rolled strip steel, and if the specifications of the new roll of cold-rolled strip steel and the previous roll of cold-rolled strip steel are the same, the wind pressure of the floater is controlled to; if the bandwidth of the former is smaller than that of the latter, the pressure of the floater is controlled to adjust the wind pressure to the set value before the new coil of cold-rolled strip steel reaches the floater closest to the inlet of the baking furnace; if the bandwidth of the former is larger than that of the latter, the pressure of the floater is controlled to adjust the wind pressure to the set value after the new cold-rolled strip steel reaches the floater closest to the inlet of the baking furnace;
step three: and after a new roll of cold-rolled strip steel is obtained to pass through a welding line signal when the baking furnace is at an outlet, the control system stops working, and the wind pressure of the floater is kept to be the next roll of cold-rolled strip steel to enter the baking furnace.
Further, in the second step, if the bandwidth of the former is smaller than that of the latter, the floater is controlled to adjust the wind pressure to the set value when the new cold-rolled strip reaches the front designated distance of the floater closest to the inlet of the baking furnace, and the control system integrates the acquired transmission speed of the new cold-rolled strip so as to obtain the time when the new cold-rolled strip reaches the designated position.
Further, in the second step, if the bandwidth of the former is greater than that of the latter, the floater is controlled to adjust the wind pressure to the set value when the new cold-rolled strip steel reaches the specified distance behind the floater closest to the inlet of the baking furnace, and the control system integrates the acquired transmission speed of the new cold-rolled strip steel, so that the time of the new cold-rolled strip steel reaching the specified position is obtained.
Further, the specified distances are all 3-5 meters.
Further, the formula for calculating the set value of the air pressure of the floater is as follows:
wherein, <math>
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wherein, P0: adjusting the value; l is0: cold rolling the strip steel span;G: the thickness of the cold-rolled strip steel; rhoG: density of cold-rolled strip steel;J: the width of the jet orifice of the floater; thetaa: the included angle between the jet flow and the steel surface of the cold-rolled strip steel is thetaa30 °; h: elevation of cold-rolled strip steel; h isb: -a floater deflector height; b: the working width of the floater; l1: a float length; xi: and the flow resistance coefficient takes the value xi = 1.25-1.5.
Compared with the prior art, the invention has the following beneficial effects:
the transmission device for the cold-rolled strip steel production line adopts the plurality of floats to manufacture continuous wind pressure, so that the cold-rolled strip steel can be transmitted in the baking furnace without contact, the baking effect of the baking furnace on the cold-rolled strip steel is enhanced, and the surface quality of the cold-rolled strip steel is greatly increased; the invention also adopts a control system to obtain the specification and the transmission speed of the cold-rolled strip steel and weld joint signals entering and exiting the baking furnace in real time, and can automatically adjust the wind pressure required by the floater in time for the cold-rolled strip steel with different specifications, so that the transmission of the cold-rolled strip steel is smoother, the production efficiency is improved, accidents possibly caused by too small and too large wind pressure of the floater or incorrect switching time are avoided, and the production safety is improved.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a transmission device for a cold-rolled strip steel production line according to an embodiment of the present invention;
fig. 2 is a flowchart of a driving method of a driving device for a cold-rolled strip steel production line according to an embodiment of the present invention.
In the context of figure 1 of the drawings,
1: a floater; 2: a control system; 3: cold rolling the strip steel; 4: a baking oven; 41: an inlet; 42: an outlet; 5: a transmission carrier roller; 6: a floater fan.
Detailed Description
The present invention provides a transmission device for a cold-rolled strip production line and a transmission method thereof, which are further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise ratio for the purpose of facilitating and distinctly aiding in the description of the embodiments of the invention.
The invention provides a transmission device for a cold-rolled strip steel production line and a control method thereof, wherein the transmission device for the cold-rolled strip steel production line adopts a plurality of floaters to manufacture continuous wind pressure, so that the cold-rolled strip steel can be transmitted in a baking furnace in a non-contact manner, the baking effect of the baking furnace on the cold-rolled strip steel is enhanced, and the surface quality of the cold-rolled strip steel is greatly increased; the invention also adopts a control system to obtain the specification and the transmission speed of the cold-rolled strip steel and weld joint signals entering and exiting the baking furnace in real time, and can automatically adjust the wind pressure required by the floater in time for the cold-rolled strip steel with different specifications, so that the transmission of the cold-rolled strip steel is smoother, the production efficiency is improved, accidents possibly caused by too small and too large wind pressure of the floater or incorrect switching time are avoided, and the production safety is improved.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a transmission device for a cold-rolled strip steel production line according to an embodiment of the present invention; fig. 2 is a flowchart of a driving method of a driving device for a cold-rolled strip steel production line according to an embodiment of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a transmission control device for a cold-rolled strip production line, which is disposed in a baking oven 4 of the cold-rolled strip production line, wherein transmission carrier rollers 5 are disposed outside the baking oven 4 near an inlet and an outlet of the baking oven 4, a cold-rolled strip 3 is supported, guided and transmitted by the transmission carrier rollers 5 and tensioners disposed in the cold-rolled strip production line, the transmission device includes a plurality of floats 1, a float fan 6 and a control system 2, the plurality of floats 1 are disposed in the baking oven 4 at equal intervals, two floats 1 at two ends of the plurality of floats 1 are respectively near the inlet and the outlet of the baking oven 4, the plurality of floats 1 are connected to the float fan 6, the float fan 6 is in telecommunication connection with the control system 2, and the control system 2 is used for obtaining specifications, a position, and a position of the cold-rolled strip 3, The transmission speed and the weld joint signal entering and exiting the baking oven 4 are calculated in real time to obtain the set value of the air pressure of the floater 1 and the switching time of the set value, and the air pressure of the floater is adjusted to the set value by controlling the rotating speed of the floater fan 6.
In this embodiment, the cold rolled steel strip 3 is not contacted with any carrier roller after entering the baking oven 4, is completely supported by the floater 1, and is transferred by a tensioner provided in the cold rolled steel strip production line. A large number of air boxes which are symmetrically arranged up and down are arranged between the inlet of the baking furnace 4 and the nearest floater 1, so that the effect of stabilizing and supporting the cold-rolled steel strip 3 is achieved, and the pressure of the air boxes does not change along with the specification of the cold-rolled steel strip 3.
Further, the total length of the baking oven 4 is 146 meters, the number of the floaters 1 is 18, the distance between every two floaters is 6 meters, the distance between the floaters 1 closest to the inlet of the baking oven 4 and the inlet of the baking oven 4 is 36.3 meters, and the cold-rolled steel strip 3 naturally swings from a top roller of a coating machine in a cold-rolled steel strip production line and is conveyed into the baking oven 4 through the transmission carrier roller 5.
As shown in fig. 2, an embodiment of the present invention further provides a control method for the transmission control apparatus for a cold-rolled steel strip production line, where the control method includes:
the method comprises the following steps: when a roll of cold-rolled steel strip 3 reaches the inlet 41 of the baking oven, the product specification, the running speed and the weld joint signal entering the baking oven of the roll of cold-rolled steel strip 3 are obtained through the control system 2;
step two: the new roll of cold-rolled steel strip 3 is continuously transmitted in the baking furnace 4, the control system 2 calculates the wind pressure set value of the floater 1 according to the product specification of the new roll of cold-rolled steel strip 3, and simultaneously, the specification of the new roll of cold-rolled steel strip 3 is compared with the specification of the previous roll of cold-rolled steel strip 3. If the specifications of the two are the same, the wind pressure of the floater 1 is controlled to be unchanged; if the bandwidth of the former is smaller than that of the latter, the pressure of the floater is controlled to adjust the wind pressure to the set value before the new coil of cold-rolled steel strip 3 reaches the floater 1 closest to the inlet of the baking furnace 4; if the bandwidth of the former is larger than that of the latter, the pressure of the floater is controlled to be the set value after the new coil of cold-rolled strip steel 3 reaches the floater 1 closest to the inlet 4 of the baking furnace;
step three: after obtaining new roll of cold-rolled steel strip 3 and passing through the welding seam signal when 4 exports of baking oven, control system 2 stop work, will the wind pressure of floater 1 keeps to next roll of cold-rolled steel strip 3 and gets into baking oven 4.
Further, in the second step, if the bandwidth of the former is smaller than that of the latter, the floater 1 is controlled to adjust the wind pressure to the set value when the new cold-rolled strip 3 reaches the floater 1 closest to the inlet of the baking furnace 4 by a specified distance, and the control system 2 integrates the acquired transmission speed of the new cold-rolled strip 3, so as to obtain the time when the new cold-rolled strip 3 reaches the specified position.
Further, in the second step, if the bandwidth of the former is greater than that of the latter, the floater 1 is controlled to adjust the wind pressure to the set value when the new cold-rolled strip 3 reaches the specified distance behind the floater 1 closest to the inlet of the baking furnace 4, and the control system 2 integrates the acquired transmission speed of the new cold-rolled strip 3, so as to obtain the time when the new cold-rolled strip 3 reaches the specified position.
Preferably, the specified distances are all 3-5 meters.
Further, the formula for calculating the set value of the wind pressure of the floater is as follows:
wherein, <math>
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wherein, P0: adjusting the value; l is0: cold rolling the strip steel span;G: the thickness of the cold-rolled strip steel; rhoG: density of cold-rolled strip steel;J: the width of the jet orifice of the floater; thetaa: the included angle between the jet flow and the steel surface of the cold-rolled strip steel is thetaa30 °; h: elevation of cold-rolled strip steel; h isb: -a floater deflector height; b: the working width of the floater; l1: a float length; xi: and the flow resistance coefficient takes the value xi = 1.25-1.5.
In conclusion, the transmission device for the cold-rolled strip steel production line provided by the invention adopts the plurality of floats 1 to manufacture continuous wind pressure, so that the cold-rolled strip steel 3 can be transmitted in the baking furnace 4 in a non-contact manner, the baking effect of the baking furnace 4 on the cold-rolled strip steel 3 is enhanced, and the surface quality of the cold-rolled strip steel 3 is greatly improved; the invention also adopts the control system 2 to obtain the specification and the transmission speed of the cold-rolled steel strip 3 and the welding line signal entering and exiting the baking furnace 4 in real time, and can automatically adjust the wind pressure required by the floater 1 in time for the cold-rolled steel strips 3 with different specifications, so that the transmission of the cold-rolled steel strip 3 is smoother, the production efficiency is improved, the possible accidents caused by the floater 1 when the wind pressure is too small or too large or the switching time is incorrect are avoided, and the production safety is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such changes and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such changes and modifications.
Claims (7)
1. A control method of a transmission control device for a cold-rolled strip steel production line is characterized in that the transmission control device is arranged in a baking oven of the cold-rolled strip steel production line, transmission carrier rollers are arranged at the position, close to an inlet and an outlet of the baking oven, the transmission control device comprises a plurality of floaters, floater fans and a control system, the floaters are arranged in the baking oven in a row at equal intervals, two floaters at two ends of the floaters are close to the inlet and the outlet of the baking oven respectively, the floaters are connected with the floater fans, the floater fans are in telecommunication connection with the control system, the control system is used for obtaining the specification and the transmission speed of the cold-rolled strip steel and welding line signals entering and exiting the baking oven, and obtaining the wind pressure set value of the floaters and the switching time of the set value through real-time calculation, meanwhile, the air pressure of the floater is adjusted to the set value by controlling the rotating speed of the floater fan; the control method comprises the following steps:
the method comprises the following steps: when a new roll of cold-rolled steel strip reaches the inlet of the baking furnace, the product specification and the running speed of the roll of cold-rolled steel strip and a welding line signal of the roll of cold-rolled steel strip entering the baking furnace are obtained through a control system;
step two: the new roll of cold-rolled strip steel is continuously transmitted in the baking furnace, the control system calculates the wind pressure set value of the floater according to the specification of the new roll of cold-rolled strip steel, meanwhile, the specification of the new roll of cold-rolled strip steel is compared with the specification of the previous roll of cold-rolled strip steel, and if the specifications of the new roll of cold-rolled strip steel and the previous roll of cold-rolled strip steel are the same, the wind pressure of the floater is controlled to; if the bandwidth of the former is smaller than that of the latter, the pressure of the floater is controlled to adjust the wind pressure to the set value before the new coil of cold-rolled strip steel reaches the floater closest to the inlet of the baking furnace; if the bandwidth of the former is larger than that of the latter, the pressure of the floater is controlled to adjust the wind pressure to the set value after the new cold-rolled strip steel reaches the floater closest to the inlet of the baking furnace;
step three: and after a new roll of cold-rolled strip steel is obtained to pass through a welding line signal when the baking furnace is at an outlet, the control system stops working, and the wind pressure of the floater is kept to be the next roll of cold-rolled strip steel to enter the baking furnace.
2. The control method of the drive control apparatus for a cold rolled steel strip manufacturing line as set forth in claim 1, wherein the total length of said baking furnace is 146 m, the number of said floats is 18, the distance between each two of said floats is 6 m, and the distance between the float closest to the entrance of said baking furnace and the entrance of said baking furnace is 36.3 m.
3. The control method of the transmission control apparatus for a cold rolled steel strip manufacturing line of claim 1, wherein in the second step, if the bandwidth of the former is smaller than that of the latter, the floater is controlled to adjust the wind pressure to the set value when the new cold rolled steel strip reaches a specified distance before the floater closest to the entrance of the baking furnace, and the control system obtains the time when the new cold rolled steel strip reaches the specified position by integrating the acquired transmission speed of the new cold rolled steel strip.
4. The control method of the transmission control apparatus for a cold rolled steel strip production line as set forth in claim 3, wherein the specified distance is 3 to 5 meters.
5. The control method of the transmission control apparatus for a cold rolled steel strip manufacturing line of claim 1, wherein in the second step, if the bandwidth of the former is greater than that of the latter, the floater is controlled to adjust the wind pressure to the set value when the new cold rolled steel strip reaches a specified distance behind the floater closest to the entrance of the baking furnace, and the control system obtains the time when the new cold rolled steel strip reaches the specified position by integrating the acquired transmission speed of the new cold rolled steel strip.
6. The control method of the transmission control apparatus for a cold rolled steel strip production line as set forth in claim 5, wherein the specified distance is 3 to 5 meters.
7. The control method of the transmission control apparatus for a cold rolled steel strip manufacturing line according to any one of claims 1 or 3 to 6, wherein the wind pressure set value of the floater is calculated as follows:
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wherein, P0: adjusting the value; l0: cold rolling the strip steel span; g: the thickness of the cold-rolled strip steel; ρ G: density of cold-rolled strip steel; j: the width of the jet orifice of the floater; thetaa: the included angle between the jet flow and the steel surface of the cold-rolled strip steel is thetaa30 °; h: elevation of cold-rolled strip steel; hb: -a floater deflector height; b: the working width of the floater; l1: a float length; xi: the flow resistance coefficient takes the value xi as 1.25-1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP2983754B2 (en) * | 1992-02-19 | 1999-11-29 | 日新製鋼株式会社 | Cold rolling equipment and cold rolling method provided after a series of continuous annealing equipment and descaling equipment |
| CN1628002A (en) * | 2002-09-19 | 2005-06-15 | 乔维尼·阿维迪 | Process and production line for manufacturing ultrathin hot rolled strips based on the thin slab technique |
| CN101082102A (en) * | 2007-03-08 | 2007-12-05 | 马鞍山钢铁股份有限公司 | High-strength ship hull structural steel and production method of plate roll |
| CN101914736A (en) * | 2010-08-12 | 2010-12-15 | 浙江浩大工业炉有限公司 | Continuous annealing furnace |
| CN201785465U (en) * | 2010-08-12 | 2011-04-06 | 浙江浩大工业炉有限公司 | Continuous annealing furnace |
| CN103041966A (en) * | 2011-10-17 | 2013-04-17 | 宝山钢铁股份有限公司 | Method for producing ultra-thick insulating coating on surface of electrical steel |
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| JP2983754B2 (en) * | 1992-02-19 | 1999-11-29 | 日新製鋼株式会社 | Cold rolling equipment and cold rolling method provided after a series of continuous annealing equipment and descaling equipment |
| CN1628002A (en) * | 2002-09-19 | 2005-06-15 | 乔维尼·阿维迪 | Process and production line for manufacturing ultrathin hot rolled strips based on the thin slab technique |
| CN101082102A (en) * | 2007-03-08 | 2007-12-05 | 马鞍山钢铁股份有限公司 | High-strength ship hull structural steel and production method of plate roll |
| CN101914736A (en) * | 2010-08-12 | 2010-12-15 | 浙江浩大工业炉有限公司 | Continuous annealing furnace |
| CN201785465U (en) * | 2010-08-12 | 2011-04-06 | 浙江浩大工业炉有限公司 | Continuous annealing furnace |
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