CN109201743A - A kind of device and method of the not parking roll change of tandem mill - Google Patents
A kind of device and method of the not parking roll change of tandem mill Download PDFInfo
- Publication number
- CN109201743A CN109201743A CN201811100681.3A CN201811100681A CN109201743A CN 109201743 A CN109201743 A CN 109201743A CN 201811100681 A CN201811100681 A CN 201811100681A CN 109201743 A CN109201743 A CN 109201743A
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- China
- Prior art keywords
- roll
- rack
- tandem mill
- roll change
- support roller
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract 2
- 239000000839 emulsion Substances 0.000 claims description 27
- 239000000284 extract Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000006748 scratching Methods 0.000 claims description 3
- 230000002393 scratching effect Effects 0.000 claims description 3
- 238000003801 milling Methods 0.000 abstract description 8
- 238000005097 cold rolling Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
A kind of device and method of the not parking roll change of tandem mill, replacement support roller use the device of not parking support roller roll change, it is made of shell, inner support, anti-friction roller, bracket.Shell is c-type structure, and shell is equipped with inner support up and down, and anti-friction roller installation is inside the shell.The application method of apparatus of the present invention is: being designed using tandem mill and produces actual otherness, reserved potential rolling power when being designed using each rack, one rack reduction ratio is distributed into other racks, even if realizing that a rack stops production, other racks also can just produce operation.The present invention can effectively, quickly, replacement working roll, intermediate calender rolls and the support roller of safety, avoid milling train reduction of speed replacement working roll and intermediate calender rolls, improve production efficiency；Avoid milling train parking replacement support roller.The effective efficient production for guaranteeing tandem mill, the present invention is easy to use, structure is simple, reduces production cost.
Description
Technical field
The present invention relates to one kind to be suitable for heat, cold rolling continuous machine does not stop production replacement backing roll, intermediate calender rolls and working roll dress
It sets and application method, belongs to the technical field that tandem mill milling train improves production efficiency.
Background technique
Heat, cold-rolling mill often replace working roll, intermediate calender rolls and support roller, and working roll and intermediate calender rolls roll change influence time are short by one
As be 10 minutes (although there is loop, influence time is 10 minutes after conversion), and replace support roller and be generally 90 points
Clock.The main reason for time is long is:
1, the replacement support roller course of work is complicated.
2, support roller weight is big, and draw speed is slow.
Since each breast roller roll change period is different, by taking certain factory's cold continuous rolling as an example, each shift change jobs roller or in
Between roller least twice, monthly replace support roller minimum 5 times, tandem mill roll-changing severely impacts production efficiency very much.Milling train factory one
As using improve roll hardness, chrome-faced improves roll campaign, and not according to the normal work roll cooling period, same time by force
It replaces the method for roll and solves the problems, such as this to reduce the time.But there is disadvantage in these methods, using improving, roll is hard
Degree or chrome-faced improve roll campaign and correspondingly also improve expense；The method of same time replacement shortens the roll longevity by force
Life, increases roll consumption.
Simultaneously there is ability overstock problem in tandem mill in the actual production process, such as certain tandem mill rolls CQ grades of steel plates
When, technical regulation reduction ratio range is 50-85%, and designed capacity is higher.But in the actual production process, milling train is utilized and is not filled
Point, rolling mill screwdown rate is generally 60% or so.
Document is searched, in the case where about milling train production is not influenced, the method for replacing roll.
Summary of the invention
Complicated the invention aims to solve the replacement support roller course of work, support roller weight is big, and draw speed is slow to ask
Topic.
A kind of device of the not parking roll change of tandem mill, it is characterised in that: by shell (1), anti-friction roller (2), bracket (3), interior
Support (4) composition；Shell (1) is c-type structure；Shell is equipped with bracket (3) up and down；Inside has inner support (4)；Anti-friction roller (2) peace
On the inside of the c-type structure of shell (1), roller effect is to prevent strip from scratching roll change shell (1).
Further, when in use, shell c-type structure；Inside is packed into rack, guarantees in loading procedure towards rack
In do not collide with the strip of operation.
A method of the not parking roll change of tandem mill being realized using device as described above, it is characterised in that: utilize tandem mill
Design and the actual otherness of production, reserved potential rolling power when being designed using each rack, by a rack reduction ratio point
The other racks of dispensing, operation can just be produced a rack stops and produces other racks by realizing；Replace working roll and intermediate calender rolls benefit
With original roll change buggy, the device that support roller uses not parking support roller roll change is replaced.
Further, work roll changing method are as follows:
(1), tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%；
(2), rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0；
(3), the emulsion sprinkling of roll change rack is closed；If last bit rack uses independent emulsion cabinet, replacing
When roll, emulsion sprinkling is not out of service；
(4), roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out；
(5), after replacing working roll, rate under pressure is stepped up, until normal production.
Further, intermediate calender rolls roll-changing method are as follows:
(1), tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%；
(2), rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0；
(3), the emulsion sprinkling for closing roll change rack is being replaced if last bit rack uses independent emulsion cabinet
When roll, emulsion sprinkling is not out of service；
(4), roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out；
(5), after replacing intermediate calender rolls, rate under pressure is stepped up, until normal production.
Further, support roller roll-changing method are as follows:
(1), tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%；
(2), rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0；
(3), the emulsion sprinkling for closing roll change rack is being replaced if last bit rack uses independent emulsion cabinet
When roll, emulsion sprinkling is not out of service；
(4), roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out；
(5), it extracts former lower backing roll out, the device of the not parking support roller roll change of tandem mill, c-type is put on former lower backing roll
It is interior towards rack；
(6), it is inserted into former lower backing roll, roll change frame will be fallen under former upper backup roll.
(7), it extracts former lower backing roll out, upper backup roll is renewed；
(8), new upper backup roll, former lower backing roll are inserted into；
(9), upper new support roller is put into working position；
(10), it extracts former lower backing roll out, hangs away the device of the not parking support roller roll change of tandem mill；
(11), lower backing roll is renewed, is later packed into new support roller, be finally packed into working roll and intermediate calender rolls；
During replacing support roller, equipment is not shut down, and due to being tandem mill, no disconnection weld seam can guarantee tandem mill, is stablized
Operation.
The beneficial effects of the present invention are:
The present invention can effectively, quickly, safety replacement working roll, intermediate calender rolls and support roller, avoid milling train reduction of speed replace
Working roll and intermediate calender rolls improve production efficiency；Avoid milling train parking replacement support roller.The effective efficient life for guaranteeing tandem mill
It produces, the present invention is easy to use, structure is simple, reduces production cost.
Detailed description of the invention
Fig. 1 is structure front view of the invention；
Fig. 2 is structure top view of the invention；
Fig. 3 is structural side view of the invention；
Fig. 4 is structure sectional view of the invention；
It is marked in figure as follows: the anti-friction roller of 1- shell, 2-, 3- bracket, 4- inner support composition.
Specific embodiment
It is shown in figure, it is made of shell 1, anti-friction roller 2, bracket 3, inner support 4.Shell 1 is c-type structure；Above and below shell
Equipped with bracket 3；There is inner support 4 in inside；Anti-friction roller is mounted on the inside of the c-type structure of shell 1, and roller effect is to prevent strip from scratching
Roll change shell 1.
The course of work of the invention is as follows:
One, work roll changing method:
1, tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%.
2, rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0.
3, the emulsion sprinkling of roll change rack is closed.If last bit rack uses independent emulsion cabinet, rolled in replacement
When roller, emulsion sprinkling is not out of service.
4, roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out.
5, after replacing roll, rate under pressure is stepped up, until normal production.
Two, intermediate calender rolls roll-changing method:
1, tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%.
2, rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0.
3, the emulsion sprinkling of roll change rack is closed.If last bit rack uses independent emulsion cabinet, rolled in replacement
When roller, emulsion sprinkling is not out of service.
4, roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out.
5, after replacing roll, rate under pressure is stepped up, until normal production.
Three, support roller roll-changing method:
1, tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%.
2, rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0.
3, the emulsion sprinkling of roll change rack is closed.If last bit rack uses independent emulsion cabinet, rolled in replacement
When roller, emulsion sprinkling is not out of service.
4, roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out.
5, it extracts lower backing roll out, the device of the not parking support roller roll change of tandem mill, direction in c-type is put on lower backing roll
Rack.
6, it is inserted into former lower backing roll, roll change frame will be fallen under former upper backup roll.
7, it extracts former lower backing roll out, upper backup roll is renewed；
8, new upper backup roll, former lower backing roll are inserted into；
9, upper new support roller is put into working position；
10, it extracts former lower backing roll out, hangs away the device of the not parking support roller roll change of tandem mill；
11, lower backing roll is renewed, is later packed into new support roller, be finally packed into working roll and intermediate calender rolls；
During replacing support roller, equipment is not shut down, and due to being tandem mill, no disconnection weld seam can guarantee tandem mill, is stablized
Operation.
Benefit of the invention:
The invention firstly uses tandem mill design and the actual otherness of production, that reserves when being designed using each rack is latent
In rolling power, a rack reduction ratio is distributed into other racks, realizing can be just a rack stops producing other racks
Produce operation.The device of tandem mill roll-changing has been redesigned simultaneously, is improved safety during roll change, is essentially eliminated roll change
Waiting time reduces production cost, improves production efficiency.
Claims (6)
1. a kind of device of the not parking roll change of tandem mill, it is characterised in that: by shell (1), anti-friction roller (2), bracket (3), interior branch
Support (4) composition；Shell (1) is c-type structure；Shell is equipped with bracket (3) up and down；Inside has inner support (4)；Anti-friction roller (2) installation
On the inside of the c-type structure of shell (1), roller effect is to prevent strip from scratching roll change shell (1).
2. a kind of device of the not parking roll change of tandem mill according to claim 1, it is characterised in that: when in use, shell C
Towards rack on the inside of type structure, it is packed into rack, guarantees that the strip in loading procedure not with operation collides.
3. a kind of method for realizing the not parking roll change of tandem mill using claim 1 described device, it is characterised in that: utilize tandem rolling
Machine design and the actual otherness of production, reserved potential rolling power when being designed using each rack, by a rack reduction ratio
Other racks are distributed to, operation can just be produced a rack stops and produces other racks by realizing；Replace working roll and intermediate calender rolls
Using original roll change buggy, the device that support roller uses not parking support roller roll change is replaced.
4. the method for the not parking roll change of tandem mill as claimed in claim 3, it is characterised in that: work roll changing method are as follows:
(1), tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%；
(2), rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0；
(3), the emulsion sprinkling of roll change rack is closed；If last bit rack uses independent emulsion cabinet, in replacement roll
When, emulsion sprinkling is not out of service；
(4), roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out；
(5), after replacing working roll, rate under pressure is stepped up, until normal production.
5. the method for the not parking roll change of tandem mill as claimed in claim 3, it is characterised in that: intermediate calender rolls roll-changing method are as follows:
(1), tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%；
(2), rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0；
(3), the emulsion sprinkling for closing roll change rack, if last bit rack uses independent emulsion cabinet, in replacement roll
When, emulsion sprinkling is not out of service；
(4), roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out；
(5), after replacing intermediate calender rolls, rate under pressure is stepped up, until normal production.
6. the method for the not parking roll change of tandem mill as claimed in claim 3, it is characterised in that: support roller roll-changing method are as follows:
(1), tandem mill is avoided to produce Limit specifications, by the control of product reduction ratio below 70%；
(2), rate under other rack pressure is improved, and gradually reduces and needs roll change rack reduction ratio, until being 0；
(3), the emulsion sprinkling for closing roll change rack, if last bit rack uses independent emulsion cabinet, in replacement roll
When, emulsion sprinkling is not out of service；
(4), roll gap is lifted to maximum, extracts working roll and intermediate calender rolls out；
(5), it extracts lower backing roll out, the device of the not parking support roller roll change of tandem mill is put on lower backing roll, c-type is interior towards machine
Frame；
(6), it is inserted into lower backing roll, roll change frame will be fallen under upper backup roll.
(7), it extracts lower backing roll out, upper and lower support roller is renewed；
(8), it is inserted into upper and lower new support roller；
(9), upper new support roller is put into working position；
(10), it extracts lower backing roll out, hangs away the device of the not parking support roller roll change of tandem mill；
(11), it is put into lower backing roll, and is packed into working roll and intermediate calender rolls；
During replacing support roller, equipment is not shut down, and due to being tandem mill, no disconnection weld seam can guarantee tandem mill, stablizes fortune
Row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100681.3A CN109201743B (en) | 2018-09-20 | 2018-09-20 | Continuous rolling mill roll changing device and method without stopping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100681.3A CN109201743B (en) | 2018-09-20 | 2018-09-20 | Continuous rolling mill roll changing device and method without stopping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109201743A true CN109201743A (en) | 2019-01-15 |
| CN109201743B CN109201743B (en) | 2020-08-25 |
Family
ID=64984603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811100681.3A Expired - Fee Related CN109201743B (en) | 2018-09-20 | 2018-09-20 | Continuous rolling mill roll changing device and method without stopping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109201743B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731914A (en) * | 2019-02-21 | 2019-05-10 | 江苏沙钢集团有限公司 | Rolling method for improving surface quality of double-roller continuous casting rolled strip |
| CN111889513A (en) * | 2020-06-30 | 2020-11-06 | 武汉钢铁有限公司 | Thin slab continuous casting and rolling dummy rolling method and control system thereof |
-
2018
- 2018-09-20 CN CN201811100681.3A patent/CN109201743B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731914A (en) * | 2019-02-21 | 2019-05-10 | 江苏沙钢集团有限公司 | Rolling method for improving surface quality of double-roller continuous casting rolled strip |
| CN109731914B (en) * | 2019-02-21 | 2020-07-24 | 江苏沙钢集团有限公司 | Rolling method for improving surface quality of double-roller continuous casting rolled strip |
| CN111889513A (en) * | 2020-06-30 | 2020-11-06 | 武汉钢铁有限公司 | Thin slab continuous casting and rolling dummy rolling method and control system thereof |
| CN111889513B (en) * | 2020-06-30 | 2022-07-08 | 武汉钢铁有限公司 | Thin slab continuous casting and rolling dummy rolling method and control system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109201743B (en) | 2020-08-25 |
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Granted publication date: 20200825 |