CN106040749B - A kind of roughing mill pace control method - Google Patents
A kind of roughing mill pace control method Download PDFInfo
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- CN106040749B CN106040749B CN201610450928.9A CN201610450928A CN106040749B CN 106040749 B CN106040749 B CN 106040749B CN 201610450928 A CN201610450928 A CN 201610450928A CN 106040749 B CN106040749 B CN 106040749B
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- 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
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Abstract
The present invention relates to a kind of roughing mill pace control methods, include the following steps：The roughing outlet temperature of slab in roughing producing line is controlled into the lower limit in target temperature range；It is by the rough rolling process control of slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, the mill speed of milling train R1 is not more than 1.5m/s；The mill speed of milling train R2 is 2m/s~3.5m/s, and carries out full de-scaling processing to slab in the operation of rolling of milling train R1 and milling train R2.In the passage of the 2nd, 3 and 4 of milling train R2 rollings, entrance and exit of the slab in milling train R2 carries out dephosphorization；Multiple spot pendulum steel control is carried out to slab.The roughing mill pace control method can effectively improve roughing rhythm.
Description
Technical field
The present invention relates to technical field of steel rolling, more particularly to a kind of roughing mill pace control method.
Background technology
Since similar think gauge high-grade pipe line steel, wheel steel are required to high heating temperature, low roughing outlet temperature, to protect
Zerolling requirement is demonstrate,proved, rough rolling step needs board briquette being reduced to 880 DEG C~920 DEG C ranges, could meet finish rolling entrance
900~940 DEG C of requirement, roughing region slab temperature drop need to reach 280 DEG C or more.And when being performed according to pervious rolling mill practice
Only need through the cooling to be rolled of R2 extreme traces time forward swing steel, set according to normal two level when rolling, put steel time short then 120s, it is long then
200s.Rolling rhythm only has volume 12/hour.
The rolling rhythm of roughing control method is slower in the prior art, and the production capacity for leading to producing line is relatively low.
Invention content
The present invention provides a kind of roughing mill pace control methods, solve or part solves the control of roughing in the prior art
The rolling rhythm of method is slower, the technical issues of causing the production capacity of producing line relatively low, realizes the technology for effectively improving roughing rhythm
Effect.
A kind of roughing mill pace control method provided by the invention, includes the following steps：
The roughing outlet temperature of slab in roughing producing line is controlled into the lower limit in target temperature range；
It is by the rough rolling process control of the slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, in institute
In the passage of the 2nd, 3 and 4 for stating milling train R2 rollings, entrance and exit of the slab in the milling train R2 carries out dephosphorization；
Multiple spot pendulum steel control is carried out to the slab.
Preferably, the mill speed of the milling train R1 is not more than 1.5m/s；
The mill speed of the milling train R2 is 2m/s~3.5m/s.
Preferably, the slab is carried out at full de-scaling in the operation of rolling of the milling train R1 and the milling train R2
Reason.
Preferably, the roughing producing line includes：4 heating furnaces, connect with the tapping roller-way of the heating furnace it is primary
Dephosphorizing machine, fixed-width pressure machine, the milling train R1, the milling train R2 and roller-way；
The roller-way is sequentially connected 4 heating furnaces, a dephosphorizing machine, fixed-width pressure machine, milling train R1 and the milling train
R2；
Wherein, the heating furnace that will be close to a dephosphorizing machine is denoted as No. 1 stove, will be apart from a dephosphorizing machine most
The remote heating furnace is denoted as No. 4 stoves, and remaining two heating furnaces are denoted as No. 2 stoves and No. 3 stoves.
Preferably, the tapping interval of 4 heating furnaces is：The tail portion of the previous slab removes No. 1 stove
It taps after roller-way, the latter slab starts to tap.
Preferably, multiple spot pendulum steel control is carried out to the slab, including：
Inlet roller way of first block of slab in the milling train R2 carries out pendulum steel；
Inlet roller way of second block of slab in the milling train R1 carries out pendulum steel；
Slab described in third block carries out pendulum steel in the inlet roller way of the fixed-width pressure machine；
The 4th block of slab carries out pendulum steel in the furnace delivery table of No. 1 stove.
Preferably, the pendulum steel time of first block of slab is controlled according to the target temperature range；
When first block of slab is when the inlet roller way of the milling train R2 starts Speed-up Rolling, second block of slab exists
The inlet roller way of the milling train R1 starts Speed-up Rolling；
When second block of slab is when the inlet roller way of the milling train R1 starts Speed-up Rolling, slab described in third block exists
The inlet roller way of the fixed-width pressure machine starts the fixed width that raises speed；
When slab described in third block the inlet roller way of the fixed-width pressure machine start raise speed fixed width when, the 4th block of plate
Base starts speed-raising in the tapping roller-way of No. 1 stove and advances.
One or more technical solutions provided herein, have at least the following technical effects or advantages：
As a result of reasonable control roughing outlet temperature, rolling mode-milling train R1 of reasonable design rolls 3 passages, rolls
Machine R2 rolls 5 passages, and multiple spot pendulum steel control is carried out to slab.In this way, efficiently solve roughing control method in the prior art
Rolling rhythm is slower, the technical issues of causing the production capacity of producing line relatively low, realizes the technique effect for effectively improving roughing rhythm.
Description of the drawings
Fig. 1 is the flow chart of roughing mill pace control method provided by the invention；
Fig. 2 is the structure diagram of roughing producing line provided by the invention.
(component that each label represents in attached drawing is followed successively by：1 heating furnace, 2 dephosphorizing machines, 3 fixed-width pressure machines, 4 milling trains
R1,5 milling train R2,6 roller-ways)
Specific embodiment
The embodiment of the present application provides a kind of roughing mill pace control method, solves or part solves in the prior art slightly
The rolling rhythm for rolling control method is slower, the technical issues of causing the production capacity of producing line relatively low, by rationally controlling roughing outlet temperature
Degree, rolling mode-milling train R1 of reasonable design roll 3 passages, and milling train R2 rolls 5 passages, and multiple spot pendulum steel control is carried out to slab,
Realize the technique effect for effectively improving roughing rhythm.
Referring to attached drawing 1, a kind of roughing mill pace control method provided by the invention includes the following steps：
S1：The roughing outlet temperature of slab in roughing producing line is controlled into the lower limit in target temperature range.
S2：It is by the rough rolling process control of slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, milling train R1
Mill speed be not more than 1.5m/s；The mill speed of milling train R2 is 2m/s~3.5m/s, and the rolling of milling train R1 and milling train R2
Full de-scaling processing is carried out to slab in the process.Milling train R2 rolling the passage of the 2nd, 3 and 4 in, slab milling train R2 entrance and
Outlet carries out dephosphorization.
S3：Multiple spot pendulum steel control is carried out to slab.
Further, referring to attached drawing 2, roughing producing line includes：4 heating furnaces, 1, dephosphorizing machine 2, rolls fixed-width pressure machine 3
Machine R1, milling train R2 and roller-way 6；Roller-way 6 is sequentially connected 4 heating furnaces, 1, dephosphorizing machine 2, fixed-width pressure machine 3, milling train R1 and rolls
Machine R2；Wherein, the heating furnace 1 that will be close to a dephosphorizing machine 2 is denoted as No. 1 stove, by the farthest heating furnace 1 of dephosphorizing machine 2 of distance
No. 4 stoves are denoted as, remaining two heating furnaces 1 are denoted as No. 2 stoves and No. 3 stoves.The tapping interval of 4 heating furnaces 1 is：The tail of previous slab
After portion removes the tapping roller-way 6 of No. 1 stove, latter slab starts to tap.
Further, step S3 includes：
S301：Inlet roller way of first block of slab in milling train R2 carries out pendulum steel；And the pendulum steel time of first block of slab according to
Target temperature range is controlled.
S302：Inlet roller way of second block of slab in milling train R1 carries out pendulum steel；When first block of slab is in the entrance of milling train R2
When roller-way starts Speed-up Rolling, second block of slab starts Speed-up Rolling in the inlet roller way of milling train R1.
S303：Third block slab carries out pendulum steel in the inlet roller way of fixed-width pressure machine 3；When second block of slab is milling train R1's
When inlet roller way starts Speed-up Rolling, third block slab starts the fixed width that raises speed in the inlet roller way of fixed-width pressure machine 3.
S304：4th block of slab carries out pendulum steel in the furnace delivery table of No. 1 stove；When third block slab is in fixed-width pressure machine 3
When inlet roller way starts speed-raising fixed width, the 4th block of slab starts speed-raising in the tapping roller-way of No. 1 stove and advances.
It describes in detail below by specific embodiment to the roughing mill pace control method that the application provides：
Embodiment 1
S1：Target temperature range by slab in roughing producing line is：880 DEG C~920 DEG C, roughing outlet temperature is 880 DEG C.
S2：It is by the rough rolling process control of slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, milling train R1
Mill speed be 1.4m/s；The mill speed of milling train R2 is 2.2m/s, and to plate in the operation of rolling of milling train R1 and milling train R2
Base carries out full de-scaling processing.In the passage of the 2nd, 3 and 4 of milling train R2 rollings, entrance and exit of the slab in milling train R2 is removed
Phosphorus.
S3：Multiple spot pendulum steel control is carried out to slab, specially：S301, first block of slab milling train R2 inlet roller way into
Row pendulum steel；And the pendulum steel time of first block of slab is controlled according to target temperature range.S302, second block of slab are in milling train R1
Inlet roller way carry out pendulum steel；When first block of slab is when the inlet roller way of milling train R2 starts Speed-up Rolling, second block of slab exists
The inlet roller way of milling train R1 starts Speed-up Rolling.S303, third block slab carry out pendulum steel in the inlet roller way of fixed-width pressure machine 3；
When second block of slab is when the inlet roller way of milling train R1 starts Speed-up Rolling, third block slab is in the entrance roller of fixed-width pressure machine 3
Road starts the fixed width that raises speed.S304, the 4th block of slab carry out pendulum steel in the furnace delivery table of No. 1 stove；When third block slab is in fixed width pressure
When the inlet roller way of power machine 3 starts speed-raising fixed width, the 4th block of slab starts speed-raising in the tapping roller-way of No. 1 stove and advances.
The rolling rhythm of roughing producing line is made to be increased to volume 20/hour by above-mentioned roughing mill pace control method.
Embodiment 2
S1：Target temperature range by slab in roughing producing line is：885 DEG C~910 DEG C, roughing outlet temperature is 885 DEG C.
S2：It is by the rough rolling process control of slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, milling train R1
Mill speed be 1.3m/s；The mill speed of milling train R2 is 2.5m/s, and to plate in the operation of rolling of milling train R1 and milling train R2
Base carries out full de-scaling processing.In the passage of the 2nd, 3 and 4 of milling train R2 rollings, entrance and exit of the slab in milling train R2 is removed
Phosphorus.
S3：Multiple spot pendulum steel control is carried out to slab, specially：S301, first block of slab milling train R2 inlet roller way into
Row pendulum steel；And the pendulum steel time of first block of slab is controlled according to target temperature range.S302, second block of slab are in milling train R1
Inlet roller way carry out pendulum steel；When first block of slab is when the inlet roller way of milling train R2 starts Speed-up Rolling, second block of slab exists
The inlet roller way of milling train R1 starts Speed-up Rolling.S303, third block slab carry out pendulum steel in the inlet roller way of fixed-width pressure machine 3；
When second block of slab is when the inlet roller way of milling train R1 starts Speed-up Rolling, third block slab is in the entrance roller of fixed-width pressure machine 3
Road starts the fixed width that raises speed.S304, the 4th block of slab carry out pendulum steel in the furnace delivery table of No. 1 stove；When third block slab is in fixed width pressure
When the inlet roller way of power machine 3 starts speed-raising fixed width, the 4th block of slab starts speed-raising in the tapping roller-way of No. 1 stove and advances.
The rolling rhythm of roughing producing line is made to be increased to volume 20/hour by above-mentioned roughing mill pace control method.
Embodiment 3
S1：Target temperature range by slab in roughing producing line is：888 DEG C~915 DEG C, roughing outlet temperature is 888 DEG C.
S2：It is by the rough rolling process control of slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, milling train R1
Mill speed be 1.2m/s；The mill speed of milling train R2 is 2.8m/s, and to plate in the operation of rolling of milling train R1 and milling train R2
Base carries out full de-scaling processing.In the passage of the 2nd, 3 and 4 of milling train R2 rollings, entrance and exit of the slab in milling train R2 is removed
Phosphorus.
S3：Multiple spot pendulum steel control is carried out to slab, specially：S301, first block of slab milling train R2 inlet roller way into
Row pendulum steel；And the pendulum steel time of first block of slab is controlled according to target temperature range.S302, second block of slab are in milling train R1
Inlet roller way carry out pendulum steel；When first block of slab is when the inlet roller way of milling train R2 starts Speed-up Rolling, second block of slab exists
The inlet roller way of milling train R1 starts Speed-up Rolling.S303, third block slab carry out pendulum steel in the inlet roller way of fixed-width pressure machine 3；
When second block of slab is when the inlet roller way of milling train R1 starts Speed-up Rolling, third block slab is in the entrance roller of fixed-width pressure machine 3
Road starts the fixed width that raises speed.S304, the 4th block of slab carry out pendulum steel in the furnace delivery table of No. 1 stove；When third block slab is in fixed width pressure
When the inlet roller way of power machine 3 starts speed-raising fixed width, the 4th block of slab starts speed-raising in the tapping roller-way of No. 1 stove and advances.
The rolling rhythm of roughing producing line is made to be increased to volume 21/hour by above-mentioned roughing mill pace control method.
Embodiment 4
S1：Target temperature range by slab in roughing producing line is：890 DEG C~917 DEG C, roughing outlet temperature is 890 DEG C.
S2：It is by the rough rolling process control of slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, milling train R1
Mill speed be 1.0m/s；The mill speed of milling train R2 is 3.2m/s, and to plate in the operation of rolling of milling train R1 and milling train R2
Base carries out full de-scaling processing.In the passage of the 2nd, 3 and 4 of milling train R2 rollings, entrance and exit of the slab in milling train R2 is removed
Phosphorus.
S3：Multiple spot pendulum steel control is carried out to slab, specially：S301, first block of slab milling train R2 inlet roller way into
Row pendulum steel；And the pendulum steel time of first block of slab is controlled according to target temperature range.S302, second block of slab are in milling train R1
Inlet roller way carry out pendulum steel；When first block of slab is when the inlet roller way of milling train R2 starts Speed-up Rolling, second block of slab exists
The inlet roller way of milling train R1 starts Speed-up Rolling.S303, third block slab carry out pendulum steel in the inlet roller way of fixed-width pressure machine 3；
When second block of slab is when the inlet roller way of milling train R1 starts Speed-up Rolling, third block slab is in the entrance roller of fixed-width pressure machine 3
Road starts the fixed width that raises speed.S304, the 4th block of slab carry out pendulum steel in the furnace delivery table of No. 1 stove；When third block slab is in fixed width pressure
When the inlet roller way of power machine 3 starts speed-raising fixed width, the 4th block of slab starts speed-raising in the tapping roller-way of No. 1 stove and advances.
The rolling rhythm of roughing producing line is made to be increased to volume 21/hour by above-mentioned roughing mill pace control method.
Embodiment 5
S1：Target temperature range by slab in roughing producing line is：895 DEG C~905 DEG C, roughing outlet temperature is 895 DEG C.
S2：It is by the rough rolling process control of slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, milling train R1
Mill speed be 1.1m/s；The mill speed of milling train R2 is 3.4m/s, and to plate in the operation of rolling of milling train R1 and milling train R2
Base carries out full de-scaling processing.In the passage of the 2nd, 3 and 4 of milling train R2 rollings, entrance and exit of the slab in milling train R2 is removed
Phosphorus.
S3：Multiple spot pendulum steel control is carried out to slab, specially：S301, first block of slab milling train R2 inlet roller way into
Row pendulum steel；And the pendulum steel time of first block of slab is controlled according to target temperature range.S302, second block of slab are in milling train R1
Inlet roller way carry out pendulum steel；When first block of slab is when the inlet roller way of milling train R2 starts Speed-up Rolling, second block of slab exists
The inlet roller way of milling train R1 starts Speed-up Rolling.S303, third block slab carry out pendulum steel in the inlet roller way of fixed-width pressure machine 3；
When second block of slab is when the inlet roller way of milling train R1 starts Speed-up Rolling, third block slab is in the entrance roller of fixed-width pressure machine 3
Road starts the fixed width that raises speed.S304, the 4th block of slab carry out pendulum steel in the furnace delivery table of No. 1 stove；When third block slab is in fixed width pressure
When the inlet roller way of power machine 3 starts speed-raising fixed width, the 4th block of slab starts speed-raising in the tapping roller-way of No. 1 stove and advances.
The rolling rhythm of roughing producing line is made to be increased to volume 22/hour by above-mentioned roughing mill pace control method.
From above-mentioned 5 embodiments it is found that the roughing mill pace control method of the application offer is by reducing tapping temperature technology,
Heating furnace 1, fixed-width pressure machine 3, milling train R1, milling train R2 carry out multiple spot pendulum steel, milling train R1, milling train R2 mill speeds restriction skill
Art, the exploitation of double technique of scale removal of milling train R2 make rolling rhythm be increased to 20-22 volumes/hour from volume 12/hour.
One or more technical solutions provided herein, have at least the following technical effects or advantages：
As a result of reasonable control roughing outlet temperature, rolling mode-milling train R1 of reasonable design rolls 3 passages, rolls
Machine R2 rolls 5 passages, and multiple spot pendulum steel control is carried out to slab.In this way, efficiently solve roughing control method in the prior art
Rolling rhythm is slower, the technical issues of causing the production capacity of producing line relatively low, realizes the technique effect for effectively improving roughing rhythm.
Above-described specific embodiment has carried out the purpose of the present invention, technical solution and advantageous effect further
It is described in detail, it should be understood that the foregoing is merely the specific embodiment of the present invention, is not limited to this hair
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection domain within.
Claims (4)
- A kind of 1. roughing mill pace control method, which is characterized in that include the following steps：The roughing outlet temperature of slab in roughing producing line is controlled into the lower limit in target temperature range；It is by the rough rolling process control of the slab：Milling train R1 rolls 3 passages, and milling train R2 rolls 5 passages；Wherein, it is rolled described In the passage of the 2nd, 3 and 4 of machine R2 rollings, entrance and exit of the slab in the milling train R2 carries out dephosphorization；Multiple spot pendulum steel control is carried out to the slab；The roughing producing line includes：4 heating furnaces, the tapping with the heating furnace A dephosphorizing machine, fixed-width pressure machine, the milling train R1, the milling train R2 and the roller-way of roller-way connection；The roller-way is sequentially connected 4 heating furnaces, a dephosphorizing machine, fixed-width pressure machine, milling train R1 and the milling train R2；Wherein, it will be close to described once remove The heating furnace of phosphorus machine is denoted as No. 1 stove, and the heating furnace farthest apart from a dephosphorizing machine is denoted as No. 4 stoves, remaining Two heating furnaces are denoted as No. 2 stoves and No. 3 stoves；The tapping interval of 4 heating furnaces is：The tail portion of the previous slab is moved After going out the tapping roller-way of No. 1 stove, the latter slab starts to tap；First block of slab is in the entrance of the milling train R2 Roller-way carries out pendulum steel；Inlet roller way of second block of slab in the milling train R1 carries out pendulum steel；Slab is in institute described in third block The inlet roller way for stating fixed-width pressure machine carries out pendulum steel；The 4th block of slab carries out pendulum steel in the furnace delivery table of No. 1 stove；When For first block of slab when the inlet roller way of the milling train R2 starts Speed-up Rolling, second block of slab is in the milling train R1 Inlet roller way start Speed-up Rolling；When second block of slab is when the inlet roller way of the milling train R1 starts Speed-up Rolling, Slab described in third block starts the fixed width that raises speed in the inlet roller way of the fixed-width pressure machine；When slab described in third block is described fixed When the inlet roller way of wide forcing press starts speed-raising fixed width, the 4th block of slab starts to raise speed in the tapping roller-way of No. 1 stove Advance.
- 2. roughing mill pace control method as described in claim 1, which is characterized in thatThe mill speed of the milling train R1 is not more than 1.5m/s；The mill speed of the milling train R2 is 2m/s~3.5m/s.
- 3. roughing mill pace control method as described in claim 1, which is characterized in thatFull de-scaling processing is carried out to the slab in the operation of rolling of the milling train R1 and the milling train R2.
- 4. roughing mill pace control method as described in claim 1, which is characterized in thatThe pendulum steel time of first block of slab is controlled according to the target temperature range.
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