CN110125190A - A kind of method and device for preventing belt steel rolling side from splitting - Google Patents
A kind of method and device for preventing belt steel rolling side from splitting Download PDFInfo
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- CN110125190A CN110125190A CN201910444656.5A CN201910444656A CN110125190A CN 110125190 A CN110125190 A CN 110125190A CN 201910444656 A CN201910444656 A CN 201910444656A CN 110125190 A CN110125190 A CN 110125190A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- 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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
-
- 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
- B21B37/48—Tension control; Compression 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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
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- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a kind of method and devices for preventing belt steel rolling side from splitting, and are related to technical field of steel rolling, which comprises carry out hot rolling reeling according to the oiler temperature control in groove type coiling temperature change curve, obtain multireel strip；When the cold rolling that adjacent two coiled strip steel welds the weld seam to be formed and the solder design takes the lead to be rolled with cold rolling magnetic tape trailer through cold continuous rolling, the tension between each rack is improved；When first predeterminable area of the previous coiled strip steel of the weld seam and solder design and the second predeterminable area of latter coiled strip steel are rolled through the cold continuous rolling, the positive bending roller force of each rack of the cold continuous rolling is improved；It controls the web-like strip and carries out continuous rolling through cold continuous rolling；Reducing weld seam and weld seam, nearby rolled edge is split, and avoids the generation of the accidents such as disconnected band, and improves belt steel product quality, and solving cold continuous rolling in the prior art and rolling near rear strip steel weld joint there is technical issues that side is split.
Description
Technical field
The present invention relates to technical field of steel rolling more particularly to a kind of method and devices for preventing belt steel rolling side from splitting.
Background technique
Strip is all kinds of Metallurgical Enterprises to adapt to each metalloid of different industrial department industrialized productions or engineering goods
A kind of steel plate for needing and producing, for example, Automobile Plate and high-grade appliance plate.
When in the prior art, using cold even mutual aid system devised for poor peasants skill progress belt steel rolling, in process of production, discovery cold continuous rolling rolls rear band
Nearby there are sides to split defect for steel weld seam, not only influences strip quality, and disconnected band accident easily occurs, and seriously affects acid and rolls production line
Stable operation and production capacity play.
Summary of the invention
The embodiment of the present application solves in the related technology by providing a kind of method and device for preventing belt steel rolling side from splitting
Cold continuous rolling, which rolls rear strip steel weld joint, nearby there is technical issues that side is split.
On the one hand, the application is provided the following technical solutions by the embodiment of the application:
A method of prevent belt steel rolling side from splitting, which comprises
Hot rolling reeling is carried out according to the oiler temperature control in groove type coiling temperature change curve, obtains multireel strip；
Wherein, the groove type coiling temperature change curve is used to characterize the corresponding relationship of coiling temperature Yu the strip coiling length；
Adjacent two coiled strip steel weld the weld seam to be formed and
When the cold rolling of the solder design takes the lead to be rolled with cold rolling magnetic tape trailer through cold continuous rolling, the cold continuous rolling is judged
Mill speed whether be less than preset value, if so, improving the tension 10-40% between each rack；
First predeterminable area of the previous coiled strip steel of the weld seam and solder design and the second preset areas of latter coiled strip steel
When domain is rolled through the cold continuous rolling, the positive bending roller force 5~30% of each rack of the cold continuous rolling is improved.
Optionally, in the groove type coiling temperature change curve, the corresponding first volume is taken the lead in the hot rolling of the strip
Corresponding second coiling temperature of the hot rolling magnetic tape trailer of temperature and the strip is taken to be higher than the corresponding third in hot rolling middle section of the strip
Coiling temperature.
Optionally, first coiling temperature is greater than the second coiling temperature.
Optionally, first coiling temperature and the second coiling temperature are all 20~30 DEG C higher than the third coiling temperature.
Optionally, in the groove type coiling temperature change curve, the corresponding curve shelving of first coiling temperature
Excessively to the corresponding curve of the third coiling temperature, the corresponding curve shelving of the third coiling temperature is excessively to described second
The corresponding curve of coiling temperature.
Optionally, the preset value is 300m/min.
Optionally, the cold continuous rolling is five rack tandem tandem mills, the tension 10- improved between each rack
40%, it specifically includes:
Improve tension 20 between the first and second rack and second and third rack of the five racks tandem tandem mill~
40%；
Improve tension 10 between third and fourth rack and fourth, fifth rack of the five racks tandem tandem mill~
30%；
The increase rate of tension between first and second rack and second and third rack be greater than third and fourth described rack and
The increase rate of tension between fourth, fifth rack.
Optionally, first predeterminable area is strip of the weld seam in the 5~20m of side of mill speed direction, institute
Stating the second predeterminable area is strip of the weld seam in mill speed opposite direction 30~60m of side.
Optionally, the cold continuous rolling is five rack tandem tandem mills, improves the just curved of each rack of the cold continuous rolling
Roller power 5~30%, specifically includes:
10-30% is respectively increased in the positive bending roller force of the intermediate calender rolls of the first four rack of the five racks tandem tandem mill；
5-15% is respectively increased in the positive bending roller force of the working roll of the first four rack of the five racks tandem tandem mill；
The increase rate of the positive bending roller force of the intermediate calender rolls of the first four rack is greater than the positive bending roller force of the working roll
Increase rate.
On the other hand, the application provides a kind of device for preventing belt steel rolling side from splitting by another embodiment of the application,
Described device includes:
Module is batched, for carrying out hot rolling reeling according to the oiler temperature control in groove type coiling temperature change curve,
Obtain multireel strip；Wherein, the groove type coiling temperature change curve is used to characterize coiling temperature and the strip coiling is long
The corresponding relationship of degree；
Tension force module, the cold rolling for welding the weld seam to be formed and the solder design for adjacent two coiled strip steel take the lead and
When cold rolling magnetic tape trailer is rolled through cold continuous rolling, judge whether the mill speed of the cold continuous rolling is less than preset value, if so,
Improve the tension 10-40% between each rack；
Bending roller force control module, for the first predeterminable area of the weld seam and the previous coiled strip steel of solder design and latter
When second predeterminable area of coiled strip steel is rolled through the cold continuous rolling, the positive bending roller force of each rack of the cold continuous rolling is improved
5~30%.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The present invention carries out hot rolling reeling according to the oiler temperature control in groove type coiling temperature change curve, obtains more
Coiled strip steel, wherein the groove type coiling temperature change curve is used to characterize pair of coiling temperature Yu the strip coiling length
It should be related to, to consider variation of the hot-rolled temperature with strip coiling when, be cracked when temperature difference being avoided to lead to subsequent rolling；So
Afterwards, the cold rolling of the weld seam for welding formation end to end and the solder design of adjacent two coiled strip steel is taken the lead with cold rolling magnetic tape trailer through cold continuous rolling
When machine is rolled, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improving between each rack
Tension 10-40%；The second of first predeterminable area of the previous coiled strip steel of the weld seam and solder design and latter coiled strip steel is pre-
If region is rolled through the cold continuous rolling, improve the positive bending roller force 5~30% of each rack of the cold continuous rolling, by
Tension and bending roller force are improved when its preset region of cold rolling welding machine, on the basis of high-speed steady rolling tensile force, are increased
Interstand tension when welded seam area is rolled, cold continuous rolling increases bending roller force when rolling weld seam near zone, i.e., rolls in high-speed steady
On the basis of tension processed, increase the bending roller force of each rack when rolling welded seam area, is obtained through test and improve tension and bending roller force
Occurrence range, and then reduce rolled edge near weld seam and weld seam and split, the generation of the accidents such as disconnected band is avoided, and improve strip production
Quality, solving cold continuous rolling in the prior art and rolling near rear strip steel weld joint there is technical issues that side is split.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is the flow chart of the method for preventing belt steel rolling side from splitting in an embodiment of the present invention；
Fig. 2 is the groove type coiling temperature change curve schematic diagram in an embodiment of the present invention；
Fig. 3 is the structure drawing of device for preventing belt steel rolling side from splitting in another embodiment of the invention.
Specific embodiment
The embodiment of the present application solves cold continuous rolling in the prior art by providing a kind of method for preventing belt steel rolling side from splitting
Rolling rear strip steel weld joint nearby there is technical issues that side is split.
The technical solution of the embodiment of the present application is in order to solve the above technical problems, general thought is as follows:
A method of prevent belt steel rolling side from splitting, which comprises
Hot rolling reeling is carried out according to the oiler temperature control in groove type coiling temperature change curve, obtains multireel strip；
Wherein, the groove type coiling temperature change curve is used to characterize the corresponding relationship of coiling temperature Yu the strip coiling length；
Adjacent two coiled strip steel welds the weld seam to be formed and the cold rolling of the solder design takes the lead to be rolled with cold rolling magnetic tape trailer through cold continuous rolling
When processed, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improving the tension 10- between each rack
40%；First predeterminable area of the previous coiled strip steel of the weld seam and solder design and the second predeterminable area warp of latter coiled strip steel
When the cold continuous rolling is rolled, the positive bending roller force 5~30% of each rack of the cold continuous rolling is improved.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Illustrate first, herein presented term "and/or", only a kind of incidence relation for describing affiliated partner, table
Show there may be three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, individualism B this three
Kind situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Embodiment one
In the present embodiment, a method of prevent belt steel rolling side from splitting, referring to Fig. 1, which comprises
S101, hot rolling reeling is carried out according to the oiler temperature control in groove type coiling temperature change curve, obtains multireel
Strip；Wherein, the groove type coiling temperature change curve is corresponding with the strip coiling length for characterizing coiling temperature
Relationship；
S102, adjacent two coiled strip steel weld the weld seam to be formed and the cold rolling of the solder design is taken the lead with cold rolling magnetic tape trailer through cold
When tandem mill is rolled, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improve each rack it
Between tension 10-40%；
The second of first predeterminable area of the previous coiled strip steel of S103, the weld seam and solder design and latter coiled strip steel is pre-
If region is rolled through the cold continuous rolling, the positive bending roller force 5~30% of each rack of the cold continuous rolling is improved.
It should be noted that web-like is coiled into when hot rolling reeling, and it is referred to as a roll of, before cold-rolling process, lose each winding steel toe
After tail is by being welded to connect, rolled into cold-rolling mill.
Referring to Fig. 1, S101 is first carried out, heat is carried out according to the oiler temperature control in groove type coiling temperature change curve
It rolls and batches, obtain multireel strip；Wherein, the groove type coiling temperature change curve is for characterizing coiling temperature and the strip
Batch the corresponding relationship of length.
Specifically, referring to fig. 2, in the groove type coiling temperature change curve, the hot rolling of the strip takes the lead to correspond to
The first coiling temperature and the strip corresponding second coiling temperature of hot rolling magnetic tape trailer be higher than the strip hot rolling middle section pair
The third coiling temperature answered, and first coiling temperature is greater than the second coiling temperature.
It should be noted that taking the lead when hot rolling is taken the lead as hot rolling reeling, corresponding with magnetic tape trailer when cold-rolling process and cold
Roll magnetic tape trailer it is rolled after, can be elongated due to rolled, therefore, the length of taking the lead after cold rolling is greater than hot rolling and takes the lead.
More specifically, first coiling temperature and the second coiling temperature are all higher by 20~30 than the third coiling temperature
℃。
Wherein, the length that hot rolling is taken the lead is 20~40m, and the length of hot rolling magnetic tape trailer is 30~60m.
As an alternative embodiment, in order to which gentle carry out temperature is excessive, being rolled up in the groove type referring to Fig. 3
It takes in temperature variation curve, the corresponding curve shelving of first coiling temperature is excessively to the corresponding song of the third coiling temperature
Line, the corresponding curve shelving of the third coiling temperature is excessively to the corresponding curve of second coiling temperature.
Specifically, shelving excessively can be linear, it is also possible to nonlinear arc, as long as slowly excessively, rather than
It is batched a little at some, temperature is directly changed to another value from a value.
Next, execute S102, the cold rolling that adjacent two coiled strip steel welds the weld seam to be formed and the solder design take the lead and
When cold rolling magnetic tape trailer is rolled through cold continuous rolling, judge whether the mill speed of the cold continuous rolling is less than preset value, if so,
Improve the tension 10-40% between each rack.
Specifically, cold continuous rolling, which can be single chassis, is also possible to multi-frame, if single chassis, then at both ends is improved
Power, as an alternative embodiment, the cold continuous rolling is five rack tandem tandem mills, the preset value is 300m/
Min, then,
The tension 10-40% improved between each rack, specifically includes:
Improve tension 20 between the first and second rack and second and third rack of the five racks tandem tandem mill~
40%；
Improve tension 10 between third and fourth rack and fourth, fifth rack of the five racks tandem tandem mill~
30%；
The increase rate of tension between first and second rack and second and third rack be greater than third and fourth described rack and
The increase rate of tension between fourth, fifth rack.
As an alternative embodiment, the front and back predeterminable area of the weld seam includes:
Strip and the weld seam of the weld seam in the side 5-20m of mill speed direction are along mill speed opposite direction one
Strip in the 30-60m of side.
As an alternative embodiment, the positive bending roller force 5~30% of each rack of the cold continuous rolling is improved, it is specific to wrap
It includes:
10-30% is respectively increased in the positive bending roller force of the intermediate calender rolls of the first four rack of the five racks tandem tandem mill；
5-15% is respectively increased in the positive bending roller force of the working roll of the first four rack of the five racks tandem tandem mill；
The increase rate of the positive bending roller force of the intermediate calender rolls of the first four rack is greater than the positive bending roller force of the working roll
Increase rate.
While executing S102, S103, the first preset areas of the previous coiled strip steel of the weld seam and solder design are executed
When second predeterminable area of domain and latter coiled strip steel is rolled through the cold continuous rolling, each rack of the cold continuous rolling is improved
Positive bending roller force 5~30%.
Specifically, as an alternative embodiment, first predeterminable area is the weld seam along mill speed side
Strip into 5~20m of side, second predeterminable area are band of the weld seam in mill speed opposite direction 30~60m of side
Steel.
As an alternative embodiment, the cold continuous rolling is five rack tandem tandem mills, the cold company is improved
The positive bending roller force 5~30% of each rack of milling train, specifically includes:
10-30% is respectively increased in the positive bending roller force of the intermediate calender rolls of the first four rack of the five racks tandem tandem mill；
5-15% is respectively increased in the positive bending roller force of the working roll of the first four rack of the five racks tandem tandem mill；
The increase rate of the positive bending roller force of the intermediate calender rolls of the first four rack is greater than the positive bending roller force of the working roll
Increase rate.
Method of the invention is described in detail below with reference to example.
Example 1:
A method of prevent belt steel rolling side from splitting, referring to Fig. 1, which comprises
S101, hot rolling reeling is carried out according to the oiler temperature control in groove type coiling temperature change curve, obtains multireel
Strip；Wherein, the groove type coiling temperature change curve is corresponding with the strip coiling length for characterizing coiling temperature
Relationship；
S102, adjacent two coiled strip steel weld the weld seam to be formed and the cold rolling of the solder design is taken the lead with cold rolling magnetic tape trailer through cold
When tandem mill is rolled, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improve each rack it
Between tension 10-40%；
The second of first predeterminable area of the previous coiled strip steel of S103, the weld seam and solder design and latter coiled strip steel is pre-
If region is rolled through the cold continuous rolling, the positive bending roller force 5~30% of each rack of the cold continuous rolling is improved.
It is specific:
The length that the hot rolling is taken the lead is 20m, and the length of the hot rolling magnetic tape trailer is 30m；
Third coiling temperature is 500 DEG C.
Specifically, the cold continuous rolling is five rack tandem tandem mills:
The preset value is 200m/min；
The cold continuous rolling is five rack tandem tandem mills, improves the first and second of the five racks tandem tandem mill
Tension 20% between rack and second and third rack；Improve third and fourth rack and of the five racks tandem tandem mill
Four, the tension 10% between five racks.
The cold continuous rolling is five rack tandem tandem mills, and first predeterminable area is the weld seam along mill speed
Strip in the 5m of direction side, second predeterminable area are strip of the weld seam in mill speed opposite direction side 30m.
The positive bending roller force 5~30% for improving each rack of the cold continuous rolling, specifically includes:
The positive bending roller force of the intermediate calender rolls of the first four rack of the five racks tandem tandem mill is respectively increased 10%；
The positive bending roller force of the working roll of the first four rack of the five racks tandem tandem mill is respectively increased 5%；
The increase rate of the positive bending roller force of the intermediate calender rolls of the first four rack is greater than the positive bending roller force of the working roll
Increase rate.
Example 2:
A method of prevent belt steel rolling side from splitting, referring to Fig. 1, which comprises
S101, hot rolling reeling is carried out according to the oiler temperature control in groove type coiling temperature change curve, obtains multireel
Strip；Wherein, the groove type coiling temperature change curve is corresponding with the strip coiling length for characterizing coiling temperature
Relationship；
S102, adjacent two coiled strip steel weld the weld seam to be formed and the cold rolling of the solder design is taken the lead with cold rolling magnetic tape trailer through cold
When tandem mill is rolled, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improve each rack it
Between tension 10-40%；
The second of first predeterminable area of the previous coiled strip steel of S103, the weld seam and solder design and latter coiled strip steel is pre-
If region is rolled through the cold continuous rolling, the positive bending roller force 5~30% of each rack of the cold continuous rolling is improved.
It is specific:
The length that the hot rolling is taken the lead is 40m, and the length of the hot rolling magnetic tape trailer is 60m；
Third coiling temperature is 780 DEG C.
Specifically, the cold continuous rolling is five rack tandem tandem mills:
The preset value is 280m/min；
Improve the tension 40% between the first and second rack and second and third rack of the five racks tandem tandem mill；It mentions
Tension 30% between third and fourth rack and fourth, fifth rack of the high five racks tandem tandem mill.
The cold continuous rolling is five rack tandem tandem mills, and first predeterminable area is the weld seam along mill speed
Strip in the 20m of direction side, second predeterminable area are strip of the weld seam in mill speed opposite direction side 60m.
The positive bending roller force 5~30% for improving each rack of the cold continuous rolling, specifically includes:
Preceding the four of the five racks tandem tandem mill
The positive bending roller force of the intermediate calender rolls of a rack is respectively increased 30%；
The positive bending roller force of the working roll of the first four rack of the five racks tandem tandem mill is respectively increased 15%；
The increase rate of the positive bending roller force of the intermediate calender rolls of the first four rack is greater than the positive bending roller force of the working roll
Increase rate.
Example 3:
A method of prevent belt steel rolling side from splitting, referring to Fig. 1, which comprises
S101, hot rolling reeling is carried out according to the oiler temperature control in groove type coiling temperature change curve, obtains multireel
Strip；Wherein, the groove type coiling temperature change curve is corresponding with the strip coiling length for characterizing coiling temperature
Relationship；
S102, adjacent two coiled strip steel weld the weld seam to be formed and the cold rolling of the solder design is taken the lead with cold rolling magnetic tape trailer through cold
When tandem mill is rolled, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improve each rack it
Between tension 10-40%；
The second of first predeterminable area of the previous coiled strip steel of S103, the weld seam and solder design and latter coiled strip steel is pre-
If region is rolled through the cold continuous rolling, the positive bending roller force 5~30% of each rack of the cold continuous rolling is improved.
It is specific:
The length that the hot rolling is taken the lead is 30m, and the length of the hot rolling magnetic tape trailer is 40m；
Third coiling temperature is 580 DEG C.
Specifically, the cold continuous rolling is five rack tandem tandem mills:
The preset value is 260m/min；
Improve the tension 30% between the first and second rack and second and third rack of the five racks tandem tandem mill；It mentions
Tension 20% between third and fourth rack and fourth, fifth rack of the high five racks tandem tandem mill.
Specifically, the cold continuous rolling is five rack tandem tandem mills:
The cold continuous rolling is five rack tandem tandem mills, and first predeterminable area is the weld seam along mill speed
Strip in the 10m of direction side, second predeterminable area are strip of the weld seam in mill speed opposite direction side 40m.
The positive bending roller force 5~30% for improving each rack of the cold continuous rolling, specifically includes:
The positive bending roller force of the intermediate calender rolls of the first four rack of the five racks tandem tandem mill is respectively increased 20%；
The positive bending roller force of the working roll of the first four rack of the five racks tandem tandem mill is respectively increased 10%；
The increase rate of the positive bending roller force of the intermediate calender rolls of the first four rack is greater than the positive bending roller force of the working roll
Increase rate.
Technical solution in above-mentioned the embodiment of the present application, at least have the following technical effects or advantages:
The present invention carries out hot rolling reeling according to the oiler temperature control in groove type coiling temperature change curve, obtains more
Coiled strip steel, wherein the groove type coiling temperature change curve is used to characterize pair of coiling temperature Yu the strip coiling length
It should be related to, to consider variation of the hot-rolled temperature with strip coiling when, be cracked when temperature difference being avoided to lead to subsequent rolling；So
Afterwards, the cold rolling of the weld seam for welding formation end to end and the solder design of adjacent two coiled strip steel is taken the lead with cold rolling magnetic tape trailer through cold continuous rolling
When machine is rolled, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improving between each rack
Tension 10-40%；The second of first predeterminable area of the previous coiled strip steel of the weld seam and solder design and latter coiled strip steel is pre-
If region is rolled through the cold continuous rolling, improve the positive bending roller force 5~30% of each rack of the cold continuous rolling, by
Tension and bending roller force are improved when its preset region of cold rolling welding machine, on the basis of high-speed steady rolling tensile force, are increased
Interstand tension when welded seam area is rolled, cold continuous rolling increases bending roller force when rolling weld seam near zone, i.e., rolls in high-speed steady
On the basis of tension processed, increase the bending roller force of each rack when rolling welded seam area, is obtained through test and improve tension and bending roller force
Occurrence range, and then reduce rolled edge near weld seam and weld seam and split, the generation of the accidents such as disconnected band is avoided, and improve strip production
Quality, solving cold continuous rolling in the prior art and rolling near rear strip steel weld joint there is technical issues that side is split.
Embodiment two
In the present embodiment, a kind of device for preventing belt steel rolling side from splitting, referring to Fig. 3, described device includes:
Module is batched, for carrying out hot rolling reeling according to the oiler temperature control in groove type coiling temperature change curve,
Obtain multireel strip；Wherein, the groove type coiling temperature change curve is used to characterize coiling temperature and the strip coiling is long
The corresponding relationship of degree；
Tension force module, the cold rolling for welding the weld seam to be formed and the solder design for adjacent two coiled strip steel take the lead and
When cold rolling magnetic tape trailer is rolled through cold continuous rolling, judge whether the mill speed of the cold continuous rolling is less than preset value, if so,
Improve the tension 10-40% between each rack；
Bending roller force control module, for the first predeterminable area of the weld seam and the previous coiled strip steel of solder design and latter
When second predeterminable area of coiled strip steel is rolled through the cold continuous rolling, the positive bending roller force of each rack of the cold continuous rolling is improved
5~30%.
Since the device for preventing belt steel rolling side from splitting that the present embodiment is introduced is to implement to prevent in the embodiment of the present application one
Device used by the method that belt steel rolling side is split, so based on belt steel rolling side is prevented described in the embodiment of the present application one
The method split, those skilled in the art can understand the specific embodiment and its various change of the device of the present embodiment
Form, so how to realize that the method in the embodiment of the present application is no longer discussed in detail for the system at this.As long as this field institute
Belong to technical staff and implement device used by the method that commodity in the embodiment of the present application prevent belt steel rolling side from splitting, belongs to this Shen
The range that please be protect.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of method for preventing belt steel rolling side from splitting, which is characterized in that the described method includes:
Hot rolling reeling is carried out according to the oiler temperature control in groove type coiling temperature change curve, obtains multireel strip: where
The groove type coiling temperature change curve is used to characterize the corresponding relationship of coiling temperature Yu the strip coiling length；
The cold rolling that adjacent two coiled strip steel welds the weld seam to be formed and the solder design take the lead with cold rolling magnetic tape trailer through cold continuous rolling into
When row rolling, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improving the tension between each rack
10-40%；
First predeterminable area of the previous coiled strip steel of the weld seam and solder design and the second predeterminable area warp of latter coiled strip steel
When the cold continuous rolling is rolled, the positive bending roller force 5~30% of each rack of the cold continuous rolling is improved.
2. the method as described in claim 1, which is characterized in that in the groove type coiling temperature change curve, the band
Corresponding second coiling temperature of hot rolling magnetic tape trailer that corresponding first coiling temperature and the strip are taken the lead in the hot rolling of steel is higher than described
The corresponding third coiling temperature in the hot rolling middle section of strip.
3. method according to claim 2, which is characterized in that first coiling temperature is greater than the second coiling temperature.
4. method as claimed in claim 3, which is characterized in that first coiling temperature and the second coiling temperature are all than described
Third coiling temperature is 20~30 DEG C high.
5. method as claimed in claim 4, which is characterized in that in the groove type coiling temperature change curve, described
For the corresponding curve shelving of one coiling temperature excessively to the corresponding curve of the third coiling temperature, the third coiling temperature is corresponding
Curve shelving excessively to the corresponding curve of second coiling temperature.
6. the method as described in claim 1, which is characterized in that the preset value is 300m/min.
7. the method as described in claim 1, which is characterized in that the cold continuous rolling is five rack tandem tandem mills, described
The tension 10-40% between each rack is improved, is specifically included:
Improve the tension 20~40% between the first and second rack and second and third rack of the five racks tandem tandem mill；
Improve the tension 10~30% between third and fourth rack and fourth, fifth rack of the five racks tandem tandem mill；
The increase rate of tension between first and second rack and second and third rack is greater than third and fourth described rack and the
Four, the increase rate of the tension between five racks.
8. the method as described in claim 1, which is characterized in that first predeterminable area is the weld seam along mill speed side
Strip into 5~20m of side, second predeterminable area are band of the weld seam in mill speed opposite direction 30~60m of side
Steel.
9. method according to claim 8, which is characterized in that the cold continuous rolling is five rack tandem tandem mills, is improved
The positive bending roller force 5~30% of each rack of cold continuous rolling, specifically includes:
10-30% is respectively increased in the positive bending roller force of the intermediate calender rolls of the first four rack of the five racks tandem tandem mill；
5-15% is respectively increased in the positive bending roller force of the working roll of the first four rack of the five racks tandem tandem mill；
The increase rate of the positive bending roller force of the intermediate calender rolls of the first four rack is greater than the raising of the positive bending roller force of the working roll
Amplitude.
10. a kind of device for preventing belt steel rolling side from splitting, which is characterized in that described device includes:
Module is batched, for carrying out hot rolling reeling according to the oiler temperature control in groove type coiling temperature change curve, is obtained
Multireel strip；Wherein, the groove type coiling temperature change curve is used to characterize coiling temperature and the strip coiling length
Corresponding relationship；
Tension force module, the cold rolling for welding the weld seam to be formed and the solder design for adjacent two coiled strip steel is taken the lead and cold rolling
When magnetic tape trailer is rolled through cold continuous rolling, judge whether the mill speed of the cold continuous rolling is less than preset value, if so, improving
Tension 10-40% between each rack；
Bending roller force control module, the first predeterminable area and latter winding for the weld seam and the previous coiled strip steel of solder design
When second predeterminable area of steel is rolled through the cold continuous rolling, improve the positive bending roller force 5 of each rack of the cold continuous rolling~
30%.
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| CN201910444656.5A CN110125190B (en) | 2019-05-24 | 2019-05-24 | Method and device for preventing edge crack of strip steel in rolling |
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| CN114130825A (en) * | 2021-11-30 | 2022-03-04 | 攀钢集团攀枝花钢钒有限公司 | Method for removing sleeve of extremely thin material winding core and winding |
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