CN109940048A - A kind of skin pass mill tension control method - Google Patents
A kind of skin pass mill tension control method Download PDFInfo
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- CN109940048A CN109940048A CN201910273215.3A CN201910273215A CN109940048A CN 109940048 A CN109940048 A CN 109940048A CN 201910273215 A CN201910273215 A CN 201910273215A CN 109940048 A CN109940048 A CN 109940048A
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- tension
- threading
- uncoiler
- skin pass
- pass mill
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims description 38
- 241000277275 Oncorhynchus mykiss Species 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims 1
- 238000006748 scratching Methods 0.000 abstract description 3
- 230000002393 scratching effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Abstract
Present invention discloses a kind of skin pass mill tension control methods rewinding and smooth two kinds of operating modes.It is controllable that tension control method of the present invention realizes unit tension stability in threading and operational process, strip is avoided to shake big, easy the problems such as scratching, to realize unit self-threading tape and raising percent of automatization, being the product quality for improving hot-strip and rate of becoming a useful person, provide strong support.
Description
Technical field
The present invention relates to metallurgical automation control technology field more particularly to the tension force skills of hot-rolled leveling bundling unit
Art.
Background technique
Hot-rolled leveling bundling unit is to improve belt plate shape quality, improves the important production process of mechanical property.Unit
Power control tenses loose strip, to guarantee the smooth transport of production line strip, control method and the control direct shadow of precision
Production efficiency, product quality and the lumber recovery for ringing producing line, are one of the key control technologies of the type production line.With hot rolling skill
The intensity rank of the continuous development of art, high-strength steel steps up and requirement of the market to hot rolled strip quality is also higher and higher, often
The ability of hot-rolled leveling unit processing high-strength steel of the rule with posting port straightener and planisher is obviously insufficient, lack it is a kind of based on
The hot-rolled leveling bundling of hot-rolled leveling unit checks line.
Summary of the invention
The technical problem to be solved by the present invention is to realize a kind of tension control method, fully consider unit because of configuration strength
Straightener makes that production line is elongated and bring realizes unit in self-threading tape and operational process to the unfavorable factor of tension force
Middle tension stability is controllable, avoid because production line it is elongated after be also easy to produce strip shake is big, easily scratch the problems such as, guarantee hot-rolled leveling
The high-speed stable running of unit.
To achieve the goals above, the technical solution adopted by the present invention are as follows: a kind of skin pass mill tension control method,
Rewinding mode tension control method the following steps are included:
1) when carrying out threading, uncoiler is set as speed control mode；
2) when taking the lead across entrance pinch roll, uncoiler is set as tension control mode, setting value is the first threading tension；
3) after taking the lead to penetrate mandrel for recoiling machine jaw, threading pause；
4) after mandrel for recoiling machine expands and clamps strip steel head, uncoiler is cut by tension control mode and switchs to speed control
Mode and be production line principal velocity roller, coiling machine is set as tension control mode, and the tension of coiling machine is set as second and is worn
Band tension；
5) after coiling machine threading tension is established, production line is continued to run with threading speed；
6) fixing turn is set when coiling machine batches to take the lead to reach, coiling machine is switched into speed control mould by tension control mode
Formula and be production line principal velocity roller, while being switched to tension control mode by speed control mode for uncoiler, and speed is set
It is set to normal operating value；
7) after uncoiler actual tension reaches normal production tension setting value, production line raising speed enters normal operation shape
State.
Smooth mode tension control method, comprising the following steps:
A) work as when threading and take the lead across entrance pinch roll, uncoiler is set as tension control mode, setting value is worn for first
Band tension；
B) after taking the lead to penetrate mandrel for recoiling machine jaw, threading pause；
C) after mandrel for recoiling machine expands and clamps strip steel head, planisher is set as production line principal velocity roller, and with minimum
Roll force mode investment；
D) after planisher reaches minimum roll-force, the tension setting value of uncoiler is set as the first threading tension, it will
Coiling machine is set as tension control mode, and tension is set as the second threading tension；
E) after uncoiler and coiling machine reach setting tension, production line is continued to run with threading speed；
F) when coiling machine batch take the lead to reach set fixing turn after, planisher is put into normal production model, by uncoiler
It is set as normally producing tension with the tension of coiling machine；
G) after uncoiler and coiling machine actual tension reach normal production tension setting value, production line raising speed enters normal
Operating status.
The first threading tension is the 5-10% of normal tension setting value, and the second threading tension sets for normal tension
The 30% of definite value, the fixing turn that sets is greater than two circles.
The minimum roll-force is 450-550KN.
A kind of skin pass mill, the skin pass mill use the skin pass mill tension control method.
The skin pass mill is successively arranged uncoiler along steel band sequence of batching products, entrance pinch roll, entrance straightener, puts down
Complete machine, outlet strength straightener, outlet cut, tension pinch roller and coiling machine.
The skin pass mill is equipped with PLC controller, the equipment of the PLC controller control skin pass mill.
It is controllable that tension control method of the present invention realizes unit tension stability in threading and operational process, and strip is avoided to tremble
Dynamic big, the problems such as easily scratching, for realize unit self-threading tape and improve percent of automatization, be improve hot-strip product quality and
It becomes a useful person rate, provides strong support.
Detailed description of the invention
The content of width attached drawing every in description of the invention expression is briefly described below:
Fig. 1 is hot-rolled leveling bundling unit rewinding mode tension control method flow chart；
Fig. 2 is the smooth mode tension control method flow chart of hot-rolled leveling bundling unit；
Fig. 3 is hot-rolled leveling bundling unit schematic diagram.
Specific embodiment
Below against attached drawing, by the description of the embodiment, for example related each component of a specific embodiment of the invention
Shape, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle, manufacturing process and
Operate with method etc., is described in further detail, to help those skilled in the art to inventive concept of the invention, technology
Scheme has more complete, accurate and deep understanding.
A kind of tension control method refines the tension of production line in self-threading tape and operational process by strip tracking
Control strategy realizes unit in self-threading tape and operational process using the technologies such as principal velocity and tension force switching at runtime
Tension stability is controllable, and strip is avoided to shake big, easy the problems such as scratching, and to realize unit self-threading tape and raising percent of automatization, mentions
The product quality of high hot-strip and rate of becoming a useful person, provide strong support.
Hot-rolled leveling unit has rewinding and smooth two kinds of operating modes, and tension control method is as shown in Figure 1, 2, comprising:
Rewinding mode tension control method:
To work as when threading and take the lead across entrance pinch roll, uncoiler is set as tension control mode, setting value is threading tension,
For on the 5-10% (fine-tuning) and line of normal tension setting value entrance pinch etc. equipment strip is fed forward together, when
It takes the lead after penetrating mandrel for recoiling machine jaw, threading suspends (speed 0), after expanding mandrel for recoiling machine and clamping strip steel head,
Uncoiler is cut by tension control mode and switchs to speed control mode and is production line principal velocity roller；Coiling machine is set as tension control
Molding formula, tension are set as threading tension, are 30% (fine-tuning) of normal tension setting value.After the completion of above-mentioned setting, and
After coiling machine threading tension is established, production line is continued to run with threading speed 15m/min (can set), is taken the lead when coiling machine batches
After 2 circles (fine-tuning), coiling machine is switched into speed control mode by tension control mode and is production line principal velocity roller, simultaneously
Uncoiler is switched to tension control mode by speed control mode, is set as normal operating value.When uncoiler actual tension reaches
To after normal production tension setting value, production line raising speed enters normal operating condition.
Smooth mode tension control method:
To work as when threading and take the lead across entrance pinch roll, uncoiler is set as tension control mode, setting value is threading tension,
For on the 5-10% (fine-tuning) and line of normal tension setting value entrance pinch etc. equipment strip is fed forward together, when
It takes the lead after penetrating mandrel for recoiling machine jaw, threading suspends (speed 0), after expanding mandrel for recoiling machine and clamping strip steel head,
Planisher is set as production line principal velocity roller, and with minimum roll-force (500KN can be set) mode investment, when planisher reaches most
After small roll-force, the tension setting value of uncoiler is set as to the 5-10% (fine-tuning) of normal tension setting value；By coiling machine
It is set as tension control mode, tension is set as threading tension, is 30% (fine-tuning) of normal tension setting value.It is set when above-mentioned
After the completion of fixed, and after uncoiler and coiling machine reach setting tension, production line is with threading speed 15m/min (can set) continuation
Operation, after coiling machine, which batches, takes the lead 2 circles (fine-tuning), puts into normal production model for planisher；By uncoiler and batch
The tension of machine is set as normally producing tension.After uncoiler and coiling machine actual tension reach normal production tension setting value,
Production line raising speed enters normal operating condition.
Hot-rolled leveling bundling unit is converted into control program by the programming language of the hardware platforms such as PLC, can be realized pair
The tension force function of hot-rolled leveling bundling unit realizes unit controllable target of tension stability in threading and operational process.This
Invention has been successfully applied to Siemens's SIMATIC S7-400PLC hardware platform, in engineerings items such as hot-rolled leveling bundling units
Mesh achieves the desired result.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing
It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.
Claims (7)
1. a kind of skin pass mill tension control method, it is characterised in that: including rewinding mode tension control method, including with
Lower step:
1) when carrying out threading, uncoiler is set as speed control mode；
2) when taking the lead across entrance pinch roll, uncoiler is set as tension control mode, setting value is the first threading tension；
3) after taking the lead to penetrate mandrel for recoiling machine jaw, threading pause；
4) after mandrel for recoiling machine expands and clamps strip steel head, uncoiler is cut by tension control mode and switchs to speed control mode
And be production line principal velocity roller, coiling machine is set as tension control mode, and the tension of coiling machine is set as the second threading
Power；
5) after coiling machine threading tension is established, production line is continued to run with threading speed；
6) set fixing turn when coiling machine batches to take the lead to reach, by coiling machine by tension control mode switch to speed control mode and
For production line principal velocity roller, while uncoiler is switched to tension control mode by speed control mode, and speed is set as
Normal operating value；
7) after uncoiler actual tension reaches normal production tension setting value, production line raising speed enters normal operating condition.
2. skin pass mill tension control method according to claim 1, it is characterised in that: further include smooth mode
Force control method, comprising the following steps:
A) work as when threading and take the lead across entrance pinch roll, uncoiler is set as tension control mode, setting value is the first threading
Power；
B) after taking the lead to penetrate mandrel for recoiling machine jaw, threading pause；
C) after mandrel for recoiling machine expands and clamps strip steel head, planisher is set as production line principal velocity roller, and with minimum rolling
Force mode investment；
D) after planisher reaches minimum roll-force, the tension setting value of uncoiler is set as the first threading tension, will be batched
Machine is set as tension control mode, and tension is set as the second threading tension；
E) after uncoiler and coiling machine reach setting tension, production line is continued to run with threading speed；
F) when coiling machine batch take the lead to reach set fixing turn after, planisher is put into normal production model, by uncoiler and volume
The tension of machine is taken to be set as normally producing tension；
G) after uncoiler and coiling machine actual tension reach normal production tension setting value, production line raising speed enters normal operation
State.
3. skin pass mill tension control method according to claim 1 or 2, it is characterised in that: first threading
Tension is the 5-10% of normal tension setting value, and the second threading tension is the 30% of normal tension setting value, the setting
It encloses number and is greater than two circles.
4. skin pass mill tension control method according to claim 2, it is characterised in that: it is described minimum roll-force be
450-550KN。
5. a kind of skin pass mill, it is characterised in that: the skin pass mill is used as described in any in claim 1-4
Skin pass mill tension control method.
6. skin pass mill according to claim 5, it is characterised in that: the skin pass mill is along steel band sequence of batching products
Be successively arranged uncoiler, entrance pinch roll, entrance straightener, planisher, outlet strength straightener, outlet cut, tension pinch roller
And coiling machine.
7. according to the skin pass mill of claim 5 or 6, it is characterised in that: the skin pass mill is controlled equipped with PLC
Device, the equipment of the PLC controller control skin pass mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910273215.3A CN109940048B (en) | 2019-04-04 | 2019-04-04 | Tension control method for leveling and uncoiling unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910273215.3A CN109940048B (en) | 2019-04-04 | 2019-04-04 | Tension control method for leveling and uncoiling unit |
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| Publication Number | Publication Date |
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| CN109940048A true CN109940048A (en) | 2019-06-28 |
| CN109940048B CN109940048B (en) | 2020-09-18 |
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| CN201910273215.3A Active CN109940048B (en) | 2019-04-04 | 2019-04-04 | Tension control method for leveling and uncoiling unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314939A (en) * | 2019-07-15 | 2019-10-11 | 张家港宏昌钢板有限公司 | A kind of strip steel head levelling method carried out using skin pass mill group |
| CN111633036A (en) * | 2020-06-09 | 2020-09-08 | 攀钢集团攀枝花钢钒有限公司 | Method for reducing local narrowing during tension building of hot continuous rolling coiler |
| CN112222202A (en) * | 2019-06-30 | 2021-01-15 | 宝山钢铁股份有限公司 | Control method for tension switching of strip steel welding line over-leveling equipment |
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| KR100805048B1 (en) * | 2002-05-07 | 2008-02-20 | 주식회사 포스코 | Reel tension and speed control method of skim pass mill for improving surface scar of coil |
| CN102125936A (en) * | 2010-01-12 | 2011-07-20 | 宝山钢铁股份有限公司 | Method for controlling hot rolling coiling tension |
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| KR101376513B1 (en) * | 2011-12-12 | 2014-03-21 | 현대로템 주식회사 | The skin pass mill system has precise tension control |
| CN204583915U (en) * | 2015-04-28 | 2015-08-26 | 中冶赛迪工程技术股份有限公司 | Hot-strip skin pass mill |
| CN106391723A (en) * | 2016-10-28 | 2017-02-15 | 鞍钢未来钢铁研究院 | Double coiling speed switching and tension establishing method for cold continuous mill |
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Patent Citations (6)
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| KR100805048B1 (en) * | 2002-05-07 | 2008-02-20 | 주식회사 포스코 | Reel tension and speed control method of skim pass mill for improving surface scar of coil |
| CN102125936A (en) * | 2010-01-12 | 2011-07-20 | 宝山钢铁股份有限公司 | Method for controlling hot rolling coiling tension |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222202A (en) * | 2019-06-30 | 2021-01-15 | 宝山钢铁股份有限公司 | Control method for tension switching of strip steel welding line over-leveling equipment |
| CN112222202B (en) * | 2019-06-30 | 2022-11-18 | 宝山钢铁股份有限公司 | Control method for tension switching of strip steel welding line over-leveling equipment |
| CN110314939A (en) * | 2019-07-15 | 2019-10-11 | 张家港宏昌钢板有限公司 | A kind of strip steel head levelling method carried out using skin pass mill group |
| CN110314939B (en) * | 2019-07-15 | 2020-12-01 | 张家港宏昌钢板有限公司 | Strip steel head flattening method by utilizing flattening unit |
| CN111633036A (en) * | 2020-06-09 | 2020-09-08 | 攀钢集团攀枝花钢钒有限公司 | Method for reducing local narrowing during tension building of hot continuous rolling coiler |
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