CN107030110B - A kind of cold rolling process of thin stainless steel band - Google Patents
A kind of cold rolling process of thin stainless steel band Download PDFInfo
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- CN107030110B CN107030110B CN201710260113.9A CN201710260113A CN107030110B CN 107030110 B CN107030110 B CN 107030110B CN 201710260113 A CN201710260113 A CN 201710260113A CN 107030110 B CN107030110 B CN 107030110B
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- stainless steel
- steel band
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- cold rolling
- thin stainless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/36—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/10—Roughness of roll surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Metal Rolling (AREA)
Abstract
The present invention provides a kind of cold rolling process of thin stainless steel band.This method carries out the rolling of 5-13 passage, the thin stainless steel band after obtaining cold rolling using 20 roller reversible cold-rolling mill group of single chassis to 304 or 301 stainless steel band blanks；Wherein, the reduction ratio of the first passage is 17%-23%, and the mill speed of pony-roughing pass is 600mpm, and the mill speed of extreme trace time is 250mpm.This method integrally improves the productivity of thin material 304 and 301, it is main that road subjob is reduced by the reduction ratio of increase per pass, and the mill speed for improving pony-roughing pass and extreme trace time, is suitable for various specifications, i.e., different-thickness, width, material strip.This method significantly improves milling train operating efficiency, productivity and yield, has reformed operation mode, and this method control effect is obvious, does not increase cost, is suitable for being widely applied in Reversible Single Stand Cold Rolling Mill productivity control field.
Description
Technical field
The present invention relates to a kind of cold rolling process of thin stainless steel band, belong to stainless steel smelting technical field.
Background technique
Steel industry excess capacity at this stage, supply is far longer than demand, while the sluggish market demand seriously affects
The development in stainless steel market.Under the overall background in this way full of keen competition, Controlling Inner Enterprise cost is retrenched expenditures, will be big
It is big to promote competitiveness, due production capacity is maximally utilized performance.The production added value of thin material 304 and 301 is high, and profit margin is high,
Thin material increase in demand simultaneously is badly in need of finding to greatest extent and improves the thin productive side of material to improve company's integrated operation situation
Method.
Two factory's milling train of cold rolling is to belong to big working roll hightension milling train, two cold rollings most of thick material life after putting into serial production
It produces, behaviour's thin material knowhow of industry is few, and technical ability degree is low, and productivity is low；Meanwhile along with the variation in market, the thin material of cold rolling in 2015
Order volume increases obvious, 301 steel grade, 1 cold rolling transfer 2 cold rollings production, therefore there is an urgent need to a kind of thin material of improvement and 301 are productive
Method actively completes the reply to market.
Therefore, the cold rolling process for developing a kind of thin stainless steel band becomes one of this field urgent problem to be solved.
Summary of the invention
In order to solve the above technical problems, the purpose of the present invention is to provide a kind of cold rolling process of thin stainless steel band.The party
Method uses 20 roller reversible cold-rolling mill group of single chassis, integrally improves to the productivity of thin material 304 and 301, is able to produce
Obtain the strip of various specifications.
In order to achieve the above objectives, the present invention provides a kind of cold rolling process of thin stainless steel band comprising following steps:
5-13 passage is carried out to 304 or 301 stainless steel band blanks using 20 roller reversible cold-rolling mill group of single chassis to roll
System, the thin stainless steel band after obtaining cold rolling；
Wherein, the reduction ratio of the first passage is 17%-23%, pony-roughing pass (remove the first and second passage, extreme trace time with
And before extreme trace time a time other passages) mill speed be 600mpm, the mill speed of extreme trace time is 250mpm.
In the above-mentioned methods, it is preferable that used stainless steel band blank with a thickness of 2.8-4.0mm.For being used
Stainless steel band blank be to be produced by which step, and be not specially limited, the company of this field routine can be passed through
Casting, hot rolling, annealing, pickling and etc. be prepared.
Specific embodiment according to the present invention, secondary material refers to by once rolling after annealing, using primary calendering
Obtained material.
In the above-mentioned methods, for the thickness of different stainless steel band blanks, different steel grade stainless steel band blank (i.e.
301) and different target thickness (target thickness of the thin stainless steel band i.e. after cold rolling) 304 or, used rolling pass
It is different.Preferably for 301 stainless steel band blanks of different-thickness and different target thicknesses, used rolling pass
As shown in the table；
In the above-mentioned methods, it is preferable that for 304 stainless steel band blanks of different-thickness and different target thicknesses,
Used rolling pass is as shown in the table；
In the above-mentioned methods, to the reduction ratio of other passages (the second passage to extreme trace) except first time without spy
It does not provide, it is preferable that the sum of reduction ratio of all passages is 30%-90%.
In the above-mentioned methods, it is preferable that the mill speed of the first passage is 150-200mpm, the mill speed of the second passage
Mill speed for 250mpm-300mpm, the preceding a time of extreme trace time is 250mpm-300mpm.
In the above-mentioned methods, it is preferable that the roll-force of first time passage is 1200ton-1250ton.Due to the first passage
Reduction ratio it is larger, rise roll difficulty, by increase roll-force be able to solve the problem.
In the above-mentioned methods, it is preferable that the rolling of other passages (the second passage to extreme trace) in addition to first time
Power is the low 50ton-100ton of roll-force of a time more preceding than its per pass.
In the above-mentioned methods, it is preferable that the first passage and extreme trace time use 120 mesh grinding working roll, roughness 0.4
μm；Other passages grind working roll using 80 mesh, and roughness is 0.6 μm.It is larger that the program can solve skidding coefficient, easily runs
Inclined problem, and if the problem of there are still sideslips, manual centering can be carried out.
Further, since the reduction ratio of the first passage is larger, rises and roll difficulty, precompressed end to end can be carried out to stainless steel band blank
Prolong (i.e. manually increase roll-force depressed in advance) to use afterwards, and checks in cold-rolled process after the first passes not
The thickness of rust steel band, confirms non-type thickness, for super thick especially severe, is zeroed out processing (i.e. to the place of super thick
Directly it is pulled through, without rolling), to ensure safety.It, can for there is special material thickness close to the reduction ratio limit
With manual modification material thickness, i.e., increase thickness manually, meets the requirement that can roll super thick end to end, to meet thickness deviation
(i.e. ± 3%).The problem bad for template end to end can carry out Profile production observation to the first passage and extreme trace time (i.e.
The IMF calibrator observed in AGC system carries out situation shown by the thickness measure of width direction), and can be by first
The maximum mill speed of secondary and extreme trace time lowers 50mpm, with timely adjustment plate type.
The cold rolling process of thin stainless steel band provided by the invention uses 20 roller reversible cold-rolling mill group of single chassis, to thin material
304 and 301 productivity is integrally improved, main by increasing reduction ratio reduction road subjob per pass, and is improved
The mill speed of pony-roughing pass and extreme trace time, is suitable for various specifications, i.e., different-thickness, width, material strip.This method
Milling train operating efficiency, productivity and yield are significantly improved, operation mode has been reformed, this method control effect is obvious, does not increase
Cost is suitable for being widely applied in Reversible Single Stand Cold Rolling Mill productivity control field.
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now to skill of the invention
Art scheme carries out described further below, but should not be understood as that limiting the scope of the invention.
Embodiment 1
Present embodiments provide a kind of cold rolling process of thin stainless steel band comprising following steps:
By taking 304,3.0mm (thickness) * 1540 (width) mm → 0.8mm (thickness) * 1540 (width) mm as an example, using single machine
20 roller reversible cold-rolling mill group of frame carries out, and the formulation of original job benchmark is rolled according to 9Pass (passage), now changes Pass
Number (9 → 7) increases the other Reduction (reduction ratio) of Pass simultaneously, guarantees that other conditions are substantially equal to 9Pass rolling, confirms it
Unit hour production history (material situation is put aside when operation)；
Wherein, the reduction ratio of the first passage is 18%, and pony-roughing pass (removes the first and second passage, extreme trace time and extreme trace
Other passages of secondary preceding a time) mill speed be 600mpm (m/min), the mill speed of extreme trace time is 250mpm (m/
min)。
Embodiment 2
Present embodiments provide the cold rolling process of thin stainless steel band comprising following steps:
By taking 304,3.2mm (thickness) * 1544mm (width) → 0.8mm (thickness) * 1544mm (width) as an example, using single machine
20 roller reversible cold-rolling mill group of frame carry out, original job benchmark formulation rolled according to 9Pass, now change Pass number (9 →
8) increase the other Reduction (reduction ratio) of Pass simultaneously, guarantee that other conditions are substantially equal to 9Pass rolling, confirm that its unit is small
When production history (material situation is put aside when operation), concrete condition is as shown in table 1；
Wherein, the reduction ratio of the first passage is 19%, and pony-roughing pass (removes the first and second passage, extreme trace time and extreme trace
Other passages of secondary preceding a time) mill speed be 600mpm (m/min), the mill speed of extreme trace time is 250mpm (m/
min)。
Table 1
Line Speed is upward:
W/R roughness increases (0.4 → 0.6): to prevent slip, the transformation of 80 mesh roller frame, Final pass Speed up
(200→250mpm)；MiddlePass Speed up(500→550→580→600mpm)
Improve detailed process:
Normal (240 0.7t 240 of 0.5t 1. material end pass speed200- > 250mpm or more 26 days thin in January polishes
0.8t 250)
2. January 27,301 intermediate Pass max 400-- > 450mpm raising speeds were normal
3. Pass max 500-- > 550mpm Test success among 2 months No. 6 0.8t
4. No. 3.3 304 5Ft 0.5t 0.6t 0.8t Final Pass Max Speed 250mpm Test
5. the transformation of 3.27-6#ZRM 80# roller frame, which is completed, but examination suspension hook stability is not high yet easily rocks the 5# transformation date
It is uncertain
6. 4.28 5#ZRM Max Speed 10mpm ↑ (original basis 550mpm)
7. the debugging of 6#ZRM 80# roller completes to check and accept the transformation of 5#ZRM 80# roller frame temporarily without plan
8. 5.5 5#ZRM 0.7t Max Speed 570mpm reach (original basis 550mpm)
Estimated arrival in July in 9.Wiper Roll purchase
10. Pass Max Speed 600mpm reaches among mid-June
As a result as shown in table 2, table 3, table 4.
Table 2
Table 3
Table 4
Calculation formula: expense=(fixed charge-fixed charge * originates in amount/(originate in amount+T/H and improve units increased in production)) * is saved the moon
(originate in amount+T/H and improve units increased in production)
Annual earnings add up to=365892 $=2,200,000
As can be seen from the above-described embodiment, under the propulsion of the cold rolling process corrective measure of thin stainless steel band of the invention,
Productivity, the rentability of thin material 304 and 301 greatly improve.
Claims (7)
1. a kind of cold rolling process of thin stainless steel band comprising following steps:
- 13 passage of 5 passage is carried out to 304 or 301 stainless steel band blanks using 20 roller reversible cold-rolling mill group of single chassis to roll
System, the thin stainless steel band after obtaining cold rolling；
Wherein, the reduction ratio of the first passage is 17%-23%, and the mill speed of pony-roughing pass is 600mpm, the rolling of extreme trace time
Speed is 250mpm；The pony-roughing pass is other roads of the first and second passage of removing, extreme trace time and the preceding a time of extreme trace time
It is secondary；
For 301 stainless steel band blanks of different-thickness and different target thicknesses, used rolling pass such as following table institute
Show；
For 304 stainless steel band blanks of different-thickness and different target thicknesses, used rolling pass such as following table institute
Show；
2. the cold rolling process of thin stainless steel band according to claim 1, wherein the sum of the reduction ratio of all passages is
30%-90%.
3. the cold rolling process of thin stainless steel band according to claim 1, wherein the mill speed of the first passage is
150mpm-200mpm。
4. the cold rolling process of thin stainless steel band according to claim 1, wherein the mill speed of the second passage is
250mpm-300mpm。
5. the cold rolling process of thin stainless steel band according to claim 1, wherein the mill speed of a time is before extreme trace time
250mpm-300mpm。
6. the cold rolling process of thin stainless steel band according to claim 1, wherein the roll-force of first time passage is
The roll-force of 1200ton-1250ton, the second passage to extreme trace time are the low 50ton- of roll-force of a time more preceding than its per pass
100ton。
7. the cold rolling process of thin stainless steel band according to claim 1, wherein the first passage and extreme trace time use 120 mesh
Working roll is ground, roughness is 0.4 μm；Other passages grind working roll using 80 mesh, and roughness is 0.6 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710260113.9A CN107030110B (en) | 2017-04-20 | 2017-04-20 | A kind of cold rolling process of thin stainless steel band |
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| CN201710260113.9A CN107030110B (en) | 2017-04-20 | 2017-04-20 | A kind of cold rolling process of thin stainless steel band |
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| CN111112329A (en) * | 2020-01-03 | 2020-05-08 | 江苏贯森新材料科技有限公司 | Cold rolling method for superhard stainless steel |
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| CN102925649A (en) * | 2012-11-30 | 2013-02-13 | 张家港浦项不锈钢有限公司 | Manufacture method of austenitic stainless steel with good polishing performance |
| CN103191928A (en) * | 2013-04-10 | 2013-07-10 | 张家港浦项不锈钢有限公司 | 304 stainless steel strip and production method thereof |
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| CN104646417A (en) * | 2015-03-06 | 2015-05-27 | 郑州市华驰薄板科技有限公司 | Cold rolling method of ultra thin steel strip |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002113504A (en) * | 2000-10-05 | 2002-04-16 | Nippon Steel Corp | Method for cold-rolling and pickling thin steel strip by twin drum type continuous sheet casting |
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2017
- 2017-04-20 CN CN201710260113.9A patent/CN107030110B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318438A (en) * | 2001-06-05 | 2001-10-24 | 宁波宝新不锈钢有限公司 | Cold rolling process of ferrite and martensitic stainless steel belt |
| CN102228902A (en) * | 2011-04-25 | 2011-11-02 | 无锡嘉联不锈钢有限公司 | Cold-rolling process of ultrathin stainless steel band |
| CN102717233A (en) * | 2012-06-04 | 2012-10-10 | 山西太钢不锈钢股份有限公司 | Method for manufacturing 304 precision stainless steel band of precision needle head |
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| CN104107833A (en) * | 2014-06-06 | 2014-10-22 | 杭州九龙厨具制造有限公司 | Method for rolling cold rolling thin strip steel |
| CN104209320A (en) * | 2014-08-27 | 2014-12-17 | 无锡市华牧机械有限公司 | Cold rolling method for stainless steel band |
| CN104646417A (en) * | 2015-03-06 | 2015-05-27 | 郑州市华驰薄板科技有限公司 | Cold rolling method of ultra thin steel strip |
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