CN101690940A - Method for rolling precision stainless steel strips with Sendzimir rolling mill - Google Patents
Method for rolling precision stainless steel strips with Sendzimir rolling mill Download PDFInfo
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- CN101690940A CN101690940A CN200810080252A CN200810080252A CN101690940A CN 101690940 A CN101690940 A CN 101690940A CN 200810080252 A CN200810080252 A CN 200810080252A CN 200810080252 A CN200810080252 A CN 200810080252A CN 101690940 A CN101690940 A CN 101690940A
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Abstract
The invention discloses a method for rolling precision stainless steel strips with a Sendzimir rolling mill, which belongs to the field of stainless steel technology and steel rolling. In the method, a process regulation of rolling a strip with the thickness less than 0.3 mm is added on the basis of the prior rolling process regulations of a twenty high rolling mill; a computer system is adopted to perform control and rational roll system configuration so as to rationally assign the deformation rate of each pass and prevent the problems that strings of edge waves of the steel strip are drawn, or tension sides are ripped and broken, and string drawing easily occurs when the rolling mill is started; checking apparatuses, such as a thickness gauge, a plate shape gauge and the like, are corrected; and the surface conditions and the like of the rolled steel strip are checked in advance of two passes so as to comprehensively meet the requirements of producing the precision stainless steel strips of less than 0.3 mm. The method not only expands the rolling range of the twenty high Sendzimir rolling mill, but also can produce products with high value added and reduce investment cost of new precision rolling mills, and is good for producing and rolling the precision stainless steel strips with short time, higher speed and lower cost, and has great application and popularization values in the manufacturing industry.
Description
One. technical field
Method with the rolling precision stainless steel band of Sendzimir rolling mill steel disclosed by the invention belongs to stainless steel technology, technical field of steel rolling, and what be specifically related to is a kind of with the following method of thin precision stainless steel band steel of the rolling 0.3mm of Sendzimir rolling mill.
Two. background technology
Precision stainless steel band steel (referring generally to thickness less than the product below the 0.5mm) is widely used in the industry that information technology, computer, auto parts and components, medical treatment, metal hose, semiconductor etc. have specific demand, is a kind of high value-added product.Therefore, the production of carrying out precision stainless steel band steel has very wide prospect.The production of carrying out precision stainless steel band steel at present mainly is by special-purpose accurate band steel milling train.The band steel of being produced is the thickness and precision height not only, and template, surface quality are also very good.But go up such a set of equipment, will spend substantial contribution.In the face of the practical problem in these rolling precision stainless steel band steel productions, if with the existing following precision stainless steel band of the thinnest design 0.3mm 20 rolling 0.3mm of roller Sendzimir rolling mill steel, both extended the rolling scope of 20 roller Sendzimir rolling mills, high value added product can also be produced, the investment cost that goes up new finishing rolling mill can be reduced again.This will be the good method of the rolling precision stainless steel band of a kind of low-cost production steel.The Sendzimir rolling mill is passed through major tuneup in order to the following precision stainless steel band of rolling 0.3mm steel, thinking of the present invention just and the production method that will inquire into.
Three. summary of the invention
The objective of the invention is: provide this method to society, in this production industry, use and promote this method, will promote the level of production of China's rolling precision stainless steel band steel with the low-cost rolling precision stainless steel band steel of Sendzimir rolling mill.
Technical scheme of the present invention is achieved in that on the basis of the existing rolling mill practice rules of 20 roller Sendzimir rolling mills, increase the technological procedure of the following thickness of rolling 0.3mm, and carry out the configuration of rational roller system, inspection apparatus such as calibrator, template instrument are proofreaied and correct, reach the requirement of producing the following precision stainless steel band of 0.3m steel comprehensively.Method with the following precision stainless steel band of the rolling 0.3mm of Sendzimir rolling mill steel, be to adopt the method for the rolling stainless steel thickness of computer system control Sendzimir rolling mill less than the 0.3mm accurate band steel, technical characterstic is: this method includes: a. is under band steel state as thin as a wafer, each pass deformation rate will distribute rationally, the final pass deformation rate is set at 5～15%, each passage increases by 0.5～5% successively before the finished product, and effectively change rolling working roll roll gap shape, make the template that shuts out straight, eliminate limit wave and pilled-in selvedge phenomenon, avoid because the deformation rate unreasonable distribution, serious cydariform or spill appear in the working roll roll gap when rolling, cause the strip edge wave to take out band or pilled-in selvedge drawing crack broken belt.B. under band steel state as thin as a wafer, pay special attention to the differential deformation problem, rib line or rolling basket appear in template easily.Therefore will improve rolling template, select roller system to be configured to: two middle free roll crowns are each 5～15 road up and down, and an intermediate calender rolls uses the Composite Double tapering, and its grinding process is: first section long 200～260mm of awl, tapering 0.15～0.3%; Second section long 80～120mm of awl, tapering 0.05～0.2%
According to above-described method with Sendzimir rolling mill rolling precision stainless steel band steel, this method and technology content also includes: under band steel state as thin as a wafer, change working roll, because no hot convexity, the milling train pressure that starts is bigger, is with steel to take out band easily.Therefore after changing working roll, next intermediate calender rolls is manually toward retraction in the selection, described retraction is meant: by operative employee's manual operation, one intermediate calender rolls is moved under the effect of hydraulic cylinder, change its active position on working roll, and reduce when rolling plate wide outside an intermediate calender rolls contact with the harmful of working roll, effectively stop milling train and start and easily take out the band problem.
According to above-described method with the rolling precision stainless steel band of Sendzimir rolling mill steel, this method and technology content also includes: the minimum total tension force of former Sendzimir rolling mill template instrument operate as normal is greater than 10 tons.And rolling thickness is less than the 0.3mm accurate band steel, owing to be subjected to the restriction of tensile strength, the total tension force of the former passage steel of finished product will cause the template instrument not measure less than 10 tons when rolling, and template can't be controlled automatically.For rolling thickness less than the 0.3mm accurate band steel, must in its measurement category, turn down all pressure sensor minimum loads of each subregion of template instrument, make template instrument minimum tension load be reduced to 2～8 tons, satisfy the former passage template of finished product instrument and measure and required precision.
According to above-described method with the rolling precision stainless steel band of Sendzimir rolling mill steel, this method and technology content also includes: computer system and software systems expansion rolling thickness thereof are calculated and monitoring capacity less than the technological procedure of 0.3mm accurate band steel, software program aspect particularly, the expansion rolling thickness is less than the technological procedure calculating of 0.3mm accurate band steel and monitoring, detectability.
According to above-described method with the rolling precision stainless steel band of Sendzimir rolling mill steel, this method and technology content also includes: precision stainless steel belt steel thickness required precision height as thin as a wafer, the calibrator correction coefficient is revised, it is possessed measure the ability of thickness, and precision is less than the requirement of 0.3mm accurate band steel less than 0.3mm band steel.
According to above-described method with the rolling precision stainless steel band of Sendzimir rolling mill steel, this method and technology content also includes: under band steel state as thin as a wafer, the template instrument is revised and proofreaies and correct, and set: than former Sendzimir rolling mill two passages inspection in advance rolled steel strip surface appearance.
Method advantage with the rolling precision stainless steel band of Sendzimir rolling mill steel of the present invention has: this method rolling scope of 20 roller Sendzimir rolling mills that not only extended, can produce high value added product again, can also reduce the investment cost that goes up new finishing rolling mill, be the good method of racing against time, striving speed, the rolling precision stainless steel band of low-cost production steel, be worth in this production industry, using and promoting.
Four. description of drawings
Figure of description of the present invention has 2 width of cloth:
Fig. 1 is a configuration schematic diagram for Sendzimir rolling mill one, two intermediate calender rolls rollers;
Fig. 2 is a middle Composite Double tapering roll structure schematic diagram.
In two figure: 1. Composite Double tapering roller in the middle of; 2. two intermediate calender rolls.Only go out one among the figure, actual two middle free rollers each ten road up and down that use; 3. roll; 4. rolled the band steel; D
1. an intermediate calender rolls diameter; D
2. an intermediate calender rolls first tapering end diameter; L
1. an intermediate calender rolls first tapering length; d
1. an intermediate calender rolls second tapering end diameter; L
2. an intermediate calender rolls second tapering length.
Five. specific embodiments
Non-limiting examples of the present invention is as follows:
Embodiment one. with the method for the rolling precision stainless steel band of Sendzimir rolling mill steel
On the basis of the existing rolling mill practice rules of 20 roller Sendzimir rolling mills, increase the technological procedure of the following thickness of rolling 0.3mm, and carry out the configuration of rational roller system, and inspection apparatus such as calibrator, template instrument are proofreaied and correct, reach the requirement of producing the following precision stainless steel band of 0.3m steel comprehensively.The method with the rolling precision stainless steel band of Sendzimir rolling mill steel of this example successfully is used in the precision stainless steel band steel that certain iron and steel enterprise produces rolling 0.25mm, and this method that it adopted is specially:
1. each pass deformation rate will distribute rationally, and pass deformation rate is pressed following setting: 12%, the four road 10%, 15%, the three road, 20%, the second road, first road, final pass 7%;
2. select roller system to be configured to: two middle free roll crowns are each 15 road up and down, and an intermediate calender rolls uses the Composite Double tapering, and its grinding process is: first section long 250mm of awl, tapering 0.28%[(D
1-D
2)/L
1]; Second section long 110mm of awl, tapering 0.16%[(D
2-d
1)/L
2]; Can be referring to Figure of description 1,2;
3. the operation of an intermediate calender rolls behind the replacing working roll: after changing working roll, next intermediate calender rolls is manually toward retraction in the selection, retraction is by operative employee's manual operation, one intermediate calender rolls is moved under the effect of hydraulic cylinder, change its active position on working roll, the roll surface length that is contacted with working roll by the last intermediate calender rolls of roll change reduces 20mm, can be referring to Figure of description 1,2;
4. all pressure sensor minimum loads of each subregion of template instrument are turned down in its measurement category to 6 tons;
5. computer system and software systems expansion rolling thickness thereof are calculated and monitoring capacity less than the technological procedure of 0.3mm accurate band steel, its technological procedure with the above accurate band steel of 0.02mm is calculated and monitoring capacity, these changes and operation etc. can be according to the computer system of rolled band steel general known technology method and content carry out, needn't chat more;
6. the calibrator correction coefficient is revised, make it possess the ability of thickness of measuring greater than 0.02mm band steel, and precision reaches the accurate band steel requirement, method is: with a 20mm * 20mm, thickness is that the corrosion resistant plate of 0.02mm is done on-gauge plate, calibrate with the milling train calibrator, calibration information is imported the calibrator system get final product;
7. two passages are checked the rolled steel strip surface in advance.Go out the qualified accurate band steel of 0.25mm according to above-mentioned method operation Rolling Production.
Embodiment two. with the method for the rolling precision stainless steel band of Sendzimir rolling mill steel
The method with the rolling precision stainless steel band of Sendzimir rolling mill steel of this example successfully is used in the precision stainless steel band steel that certain iron and steel enterprise produces rolling 0.2mm, and this method that it adopted is specially:
1. pass deformation rate is pressed following setting: 15%, the three road 11%, 20%, the second road, first road, final pass 9%;
2. roller system is configured to: two middle free roll crowns are each 12 road up and down, and an intermediate calender rolls uses the Composite Double tapering, and its grinding process is: first section long 230mm of awl, tapering 0.25%; Second section long 100mm of awl, tapering 0.14% can be referring to Figure of description 1,2;
3. the operation of an intermediate calender rolls behind the replacing working roll: after changing working roll, next intermediate calender rolls is manually toward retraction in the selection, retraction is by operative employee's manual operation, one intermediate calender rolls is moved under the effect of hydraulic cylinder, change its active position on working roll, the roll surface length that is contacted with working roll by the last intermediate calender rolls of roll change reduces 16mm, can be referring to Figure of description 1,2;
4. all pressure sensor minimum loads of each subregion of template instrument are turned down to 4 tons in its measurement category.
This example all the other are not stated with the method for the rolling precision stainless steel band of Sendzimir rolling mill steel, be same as entirely described in the embodiment one, no longer repeat.
Embodiment three. with the method for the rolling precision stainless steel band of Sendzimir rolling mill steel
The method with the rolling precision stainless steel band of Sendzimir rolling mill steel of this example successfully is used in the accurate band steel that certain iron and steel enterprise produces rolling 0.15mm, and this method that it adopted is specially:
1. pass deformation rate is pressed following setting: the 18%, the 3 16%, the 4th road 13%, 22%, the second road, first road, final pass 11%;
2. roller system is configured to: two middle free roll crowns are each 8 road up and down, and an intermediate calender rolls uses the Composite Double tapering, and its grinding process is: first section long 220mm of awl, tapering 0.18%; Second section long 100mm of awl, tapering 0.10%;
3. the operation of an intermediate calender rolls behind the replacing working roll: after changing working roll, next intermediate calender rolls is manually toward retraction in the selection, by operative employee's manual operation, one intermediate calender rolls is moved under the effect of hydraulic cylinder, change its active position on working roll, the roll surface length that is contacted with working roll by the last intermediate calender rolls of roll change reduces 12mm;
This example all the other are not stated with the method for the rolling precision stainless steel band of Sendzimir rolling mill steel, be same as entirely described in embodiment one, the embodiment two, no longer repeat.
Embodiment four. with the method for the rolling precision stainless steel band of Sendzimir rolling mill steel
The method with the rolling precision stainless steel band of Sendzimir rolling mill steel of this example successfully is used in the accurate band steel that certain iron and steel enterprise produces rolling 0.10mm, and this method that it adopted is specially:
1. pass deformation rate is pressed following setting: 17%, the four road 13.6%, 21.5%, the three road, 25%, the second road, first road, final pass 12%;
2. roller system is configured to: two middle free roll crowns are each 6 road up and down, and an intermediate calender rolls uses the Composite Double tapering, and its grinding process is: first section long 210mm of awl, tapering 0.17%; Second section long 90mm of awl, tapering 0.08%;
3. the operation of an intermediate calender rolls behind the replacing working roll: after changing working roll, next intermediate calender rolls is manually toward retraction in the selection, by operative employee's manual operation, one intermediate calender rolls is moved under the effect of hydraulic cylinder, change its active position on working roll, the roll surface length that is contacted with working roll by the last intermediate calender rolls of roll change reduces 10mm;
4. all pressure sensor minimum loads of each subregion of template instrument are turned down in its measurement category to 3 tons;
This example all the other are not stated with the method for the rolling precision stainless steel band of Sendzimir rolling mill steel, be same as entirely described in embodiment one～embodiment three, no longer repeat.
Claims (6)
1. the method with the rolling precision stainless steel band of Sendzimir rolling mill steel is to adopt the method for the rolling stainless steel thickness of computer system control Sendzimir rolling mill less than the 0.3mm accurate band steel, and be characterised in that: this method includes:
A. the final pass deformation rate is set at 5～15%, each passage increases by 0.5～5% successively before the finished product, and effectively changes rolling working roll roll gap shape, makes the template that shuts out straight, eliminates limit wave and pilled-in selvedge phenomenon;
B. improve rolling template, select roller system to be configured to: two middle free roll crowns are each 5～15 road up and down, and an intermediate calender rolls uses the Composite Double tapering, and its grinding process is: first section long 200～260mm of awl, tapering 0.15～0.3%; Second section long 80～120mm of awl, tapering 0.05～0.2%.
2. the method with the rolling precision stainless steel band of Sendzimir rolling mill steel according to claim 1, be characterised in that: this method also includes: after changing working roll, next intermediate calender rolls is manually toward retraction in the selection, reduce when rolling plate wide outside an intermediate calender rolls contact with the harmful of working roll, effectively stop milling train and start and easily take out the band problem.
3. the method with the rolling precision stainless steel band of Sendzimir rolling mill steel according to claim 1, be characterised in that: this method also includes: all pressure sensor minimum loads of each subregion of template instrument are turned down in its measurement category, make template instrument minimum tension load be reduced to 2～8 tons, satisfy the template instrument and measure and required precision.
4. the method with the rolling precision stainless steel band of Sendzimir rolling mill steel according to claim 1, be characterised in that: this method also includes: computer system and software systems expansion rolling thickness thereof are calculated and monitoring capacity less than the technological procedure of 0.3mm accurate band steel.
5. the method with the rolling precision stainless steel band of Sendzimir rolling mill steel according to claim 1, be characterised in that: this method also includes: the calibrator correction coefficient is revised, it is possessed measure the ability of thickness, and precision reaches the accurate band steel requirement less than 0.3mm band steel.
6. the method with the rolling precision stainless steel band of Sendzimir rolling mill steel according to claim 1, be characterised in that: this method also includes: two passages are checked the rolled steel strip surface in advance.
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| CN101690940B CN101690940B (en) | 2011-07-20 |
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| CN2213583Y (en) * | 1994-02-07 | 1995-11-29 | 武汉钢铁(集团)公司 | Locking device of Senjimier rolling mills saddle line key |
| DE102004032634A1 (en) * | 2004-07-06 | 2006-02-16 | Sms Demag Ag | Method and device for measuring and controlling the flatness and / or the strip tensions of a stainless steel strip or a stainless steel foil during cold rolling in a multi-roll stand, in particular in a 20-roll Sendizimir rolling mill |
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| CN101690940B (en) | 2011-07-20 |
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