CN1833790A - Slot-less rolling technique of rolling section - Google Patents
Slot-less rolling technique of rolling section Download PDFInfo
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- CN1833790A CN1833790A CN 200610055144 CN200610055144A CN1833790A CN 1833790 A CN1833790 A CN 1833790A CN 200610055144 CN200610055144 CN 200610055144 CN 200610055144 A CN200610055144 A CN 200610055144A CN 1833790 A CN1833790 A CN 1833790A
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Abstract
A fluteless rolling technology for rolling steel section includes sequentially determining 14 technological parameters including total cross-section shrinkage ratio of the workpiece to be rolled, the pressing down size of each pass, total number of passes, 5 correcting coefficients, etc, and rolling by fluteless rolling mill while regulating the clamp to the workpieces.
Description
Technical field
The invention belongs to the slotless steel rolling process of the steel rolling process, particularly rolling section bar of steel rolling mill's employing slotless plain-barreled roll steel rolling.
Background technology
Steel rolling mill is meant that with the technology of slotless plain-barreled roll steel rolling rolled piece is rolling between two plain-barreled rolls, the height of roll gap is the height of rolled piece, the rolled piece width is the rolled piece width behind the free broadening, the clamping of groove sidewall when not having existing employing grooved hole roll steel rolling, participates in metamorphosis.Adopt slotless flat rolling bar and shaped steel product, can make the stressed simplification of rolled piece, distortion evenly, help to improve the surface quality of rolled piece.Only need change the cross dimensions that roll gap just can be adjusted rolled piece when rolling, rolling adaptability is extremely strong.
Abroad, west iron companies such as the J. P. Morgan ﹠ Co. of the U.S. are explored the test that slotless plain-barreled roll steel rolling process has carried out the long period, but because its rolling parameter design is unreasonable, can only on several milling trains, carry out tentative rolling, and still can not effectively solve rolled piece existing off-square and torsion problem when being rolled till now, cause the quality problems of rolled piece more, restricting the large-scale industrialized production that it can not carry out slotless steel rolling.
And up to the present the insoluble basic reason of the problems referred to above is, roll the back width what steel rolling circle can't be determined rolled piece after no grooved roller is rolling accurately, also just having no idea adopts an effective measure guarantees in follow-up passage the rolled piece location and carries out effectively rolling.Therefore, use the technology of slotless plain-barreled roll steel rolling worldwide still to be in the test exploratory stage.
Summary of the invention
The object of the present invention is to provide a kind of slotless steel rolling process of rolling section bar, can be applied to single chassis, two-shipper frame, multimachine frame, frame and except that the finished product hole shape, only use the continuous rolling mill of indivedual hole shapes in groups, rolled piece is rolled, can determine the back width of rolling of every time rolled piece exactly, guarantee that the rolling of each passage can carry out smoothly, the effect of rolling of rolled piece is good, and technology is practical.
The object of the present invention is achieved like this: a kind of slotless steel rolling process of rolling section bar, this technology comprises the following steps: at first to determine the total contraction percentage of area of rolled piece according to preceding basal area of rolling of rolled piece and finished product basal area, and determine the drafts of every time rolled piece according to the capacity of equipment of used each milling train, determine total rolling pass then; This slotless steel rolling process also comprises the following steps:
1, at rolling every time, device therefor, steel rolling temperature, roll material and rolled piece material determine that correction factor is as follows during according to steel rolling:
(1), determines deformation of rolled wire correction factor C
1: for roughing unit, C
1Be 0.950～1.245; For middle milling train group and mm finishing mill unit, C
1Be 0.875～1.115;
(2), determine rolled piece temperature correction coefficient C
2: when rolling temperature is 900 ℃～1150 ℃, C
2Be 0.991～1.012;
(3), determine roll material correction factor C
3: for different types of roll, C
3Be 0.795～1.015;
(4), determine strip plate kind correction factor C
4: for roughed bloom, electric furnace continuous casting base or continuous-casting converter billet, C
4Be 1.000～1.015;
(5), determine rolling steel grade correction factor C
5: for common straightcarbon steel, Fine Steel Casting iron, low-alloy structural steel, structural alloy steel, C
5Be 0.785～1.115;
2, determine every time rolling parameter:
(1), the rolled piece of determining every time according to every time drafts roll the back height and roll before the ratio η of height;
(2), according to the ratio of height and the used roller diameter of rolling this passage before the rolling of every time rolled piece, determine roller footpath coefficient b;
(3), roll according to every time rolled piece before height and roll before the ratio of width, determine rolled piece section configuration coefficient a;
(4), according to described roller footpath coefficient b and rolled piece section configuration coefficient a, that determines every time rolled piece spreads index 1gW=0.6485ab relatively
-0.0301
3,, determine relative spread coefficient β=1.02 η of every time rolled piece according to above-mentioned determined each parameter
wC
1C
2C
3C
4C
5
4, according to the preceding width B of rolling of every time rolled piece
o, determine the back width B of rolling of every time rolled piece
1Be B
1=B
o+ B
oβ;
5, with no grooved roller rolled piece is rolled width B after the rolled piece that calculates through abovementioned steps rolls
1Roll back width difference greater than 5% o'clock, then again to above-mentioned correction factor C with the actual of every time rolled piece
1, C
2, C
3, C
4, C
5Revise respectively, make the rolled piece of calculating roll the back width B
1Be complementary with the actual back width that rolls of every time rolled piece, then according to the back width B of rolling of preceding a time rolled piece
1Guide and guard parameter when the adjustment rolled piece enters down a time is complementary guide and guard parameter of a time and rolled piece parameter, guarantees that rolled piece can be by effectively rolling after entering down a time roll through these guide and guard; Repeat above-mentioned steps, enter finished product hole shape roll until rolled piece and roll out finished product.
When using no grooved roller rolled steel base, rolled piece spread mainly by slip spread, down tilt spreads spreads three parts with cydariform and form.It is to be deformed metal on the contact-making surface of roll that slip is spreaded, owing to produce the amount of sliding rolled piece is increased relatively; It is because contact friction force is turned on the contact surface metal of rolled piece side in deformation process that down tilt spreads, and the width of rolled piece is increased; It is that the rolled piece side becomes the absolute spread that cydariform causes that cydariform spreads.When rolling because the down tilt existence of spreading, make rolled piece four bights every time all change.The present invention has been owing to designed rational rolling parameter, strengthened down tilt and spreaded with cydariform and spread, and makes rolled piece form the corner characteristics that is made of the round edge obtuse angle circular arc and straight line, and four bights of rolled piece are all the time greater than 120 °.This round edge obtuse angle can effectively avoid stress to concentrate and crack.Repeatedly adopt slotless steel rolling process of the present invention that steel grades such as 20MnSi, 40CrMo, 60Si2Mn are carried out roughing in the production, and these roughing samples and finished product are chemically examined, do not find because of adopting the rolling crackle that produces of slotless steel rolling process of the present invention.Learn that simultaneously when adopting slotless steel rolling process of the present invention rolling, the superficial layer of rolled piece changes rolling more more even than employing ellipse-circular hole roll, and surface layer thickness is evenly distributed and more helps reducing the formation of face crack by test.In addition, grooveless rolling does not have the restriction of hole shape roll groove sidewall, and the iron scale on rolled piece surface comes off totally, is better than rolling with grooved roll at grooveless rolling aspect the raising surface quality of steel.
Slotless steel rolling process of the present invention is through on probation on a cover small connecting rolling machine group, the result shows, use rolling Φ 20 screw-thread steels of slotless steel rolling process of the present invention, the maximum depression rate can reach 51%, maximum is rolled preceding height, wide ratio reaches 2.40, broken through the conventional limiting value 1.5 that existing steel rolling is produced far away, and nip angle is got pony roll and is directly calculated.As shown in table 1.
Table 1
| Passage | Rolled piece height/mm | Rolled piece width/mm | Roll preceding depth-width ratio | Reduction ratio (%) | Nip angle (°) | Rolling temperature (℃) | Roller diameter/mm | Remarks |
| 0 | 150 | 150 | 1150 | |||||
| 1 | 100 | 173 | 1.00 | 33 | 26 | 1130 | Φ560/Φ505 | Slotless |
| 2 | 110 | 121 | 1.73 | 36 | 29 | 1100 | Φ540/Φ490 | Slotless |
| 3 | 70 | 145 | 1.10 | 42 | 28 | 1080 | Φ490/Φ440 | Slotless |
| 4 | 80 | 92 | 2.07 | 45 | 33 | 1070 | Φ450/Φ410 | Slotless |
| 5 | 50 | 112 | 1.15 | 46 | 25 | 1070 | Φ490/Φ440 | Slotless |
| 6 | 59 | 70 | 2.24 | 47 | 29 | 1060 | Φ470/Φ420 | Slotless |
| 7 | 35 | 82 | 1.19 | 50 | 26 | 1040 | Φ390/Φ350 | Slotless |
| 8 | 41 | 51 | 2.34 | 50 | 28 | 1050 | Φ380/Φ340 | Slotless |
| 9 | 25 | 60 | 1.24 | 51 | 22 | 1060 | Φ400/Φ360 | Slotless |
| 10 | 32 | 37 | 2.40 | 47 | 23 | 1080 | Φ390/Φ350 | Slotless |
| 11 | 22 | 42 | 1.16 | 41 | 17 | 1080 | Φ400/Φ360 | Slotless |
| 12 | 29 | 29 | 1.91 | 31 | 16 | 1090 | Φ390/Φ350 | Slotless |
| 13 | 17.5 | 35.0 | 1.00 | 40 | 16 | 1100 | Φ350/Φ290 | Slotless |
| 14 | 25.2 | 24.3 | 2.00 | 28 | 15 | 1100 | Φ350/Φ290 | Slotless |
| 15 | Water-cooled | Empty mistake | ||||||
| 16 | Water-cooled | Empty mistake | ||||||
| 17 | 14.9 | 31.5 | 0.96 | 39 | 15 | 990 | Φ350/Φ290 | Slotless |
| 18 | 20.3 | 20.3 | 2.11 | 36 | 16 | 1060 | Φ350/Φ290 | Last groove |
At external existing rolled piece off-square of slotless steel rolling process and the torsion problem that passes through the long period test, slotless steel rolling process of the present invention then can calculate the back width of rolling of every time rolled piece exactly, thereby rolling the back width according to this rolled piece of determining targetedly effectively adjusts the guide and guard parameter, make down the guide and guard of a time carry out effective clamping to rolled piece, thereby thoroughly eliminated the off-square and the torsion phenomenon of rolled piece, guarantee rolled piece through these guide and guard enter down can carry out behind a time roll effectively rolling.
Because the rolling parameter design is unreasonable, up to the present external steel rolling mill can only carry out the test of slotless steel rolling few in number several on the little spacing milling train, still want then by porose roll rolled piece to be carried out the rolling of follow-up passage continuously, just can produce finished product, can't accomplish except using the last groove milling train, all to constitute a complete steel rolling production-line with the slotless milling train.Slotless steel rolling process of the present invention then allows the whole piece steel rolling production-line all to select for use the slotless milling train that rolled piece is rolled except last last groove milling train, and has successfully solved rolled piece off-square and torsion problem that external slotless steel rolling process is caused.Therefore, slotless steel rolling process of the present invention compared with prior art has outstanding substantive distinguishing features and obvious improvement, can greatly promote the technological change of whole steel rolling industry.
In sum, adopt slotless steel rolling process of the present invention under the prerequisite that not increase equipment drops into,, realized the anapsid continuous rolling of section bar with the flat roll mill replacement concave roll milling train of slotless.Slotless steel rolling process of the present invention not only can be applied to single chassis, two-shipper frame, multimachine frame, frame reaches the continuous rolling mill that only uses indivedual hole shapes except that the finished product hole shape in groups, rolled piece is rolled, and can determine the back width of rolling of every time rolled piece effectively, guarantee that the rolling of each passage can carry out smoothly, the effect of rolling of rolled piece is good, and technology is practical.Can be with the section bar of cover roll rolling a plurality of different cultivars specifications, roll changing time is short, and roll consumption is few, has simplified operation, has reduced the fixed assets input, has improved productivity ratio, has greatly promoted increasing income and economizing on spending of enterprise.Simultaneously even through the rolling deformation of rolled wire of no grooved roller, can eliminate the rolling number of drawbacks of concave roll, improved the end product quality and the lumber recovery of section bar.
The specific embodiment
Embodiment 1:
A certain have thick, in, adopt slotless steel rolling process of the present invention to carry out steel rolling production on the production line of bar of 18 rolling mills of mm finishing mill unit, selecting the length of side for use is 150mm, the billet of long 12000mm rolls out the alloy round steel of Φ 20mm.
At first determine the total contraction percentage of area of rolled piece, and determine the drafts of every time rolled piece, determine total rolling pass then according to the capacity of equipment of used each milling train according to basal area before the rolling of rolled piece and finished product basal area.
The steel billet basal area is: 22500mm
2, the finished product basal area is: 314mm
2, total contraction percentage of area is: 98.61%.According to the high-temp plastic of steel, that equipment characteristic is determined is thick, in roll and adopt 20%～30% big contraction percentage of area, mm finishing mill unit guarantees that the product precision adopts 10%～20% contraction percentage of area.Determine to use 16 passages to depress, according to the equipment characteristic of each passage milling train, determine that the drafts of each passage rolled piece is respectively: 1 passage 50mm; 2 passage 63mm; 3 passage 50mm; 4 passage 65mm; 5 passage 42mm; 6 passage 52mm; 7 passage 35mm; 8 passage 40mm; 9 passage 25mm; 10 passage 28mm; 11 passage 15mm; 12 passage 14mm; 13 passage 12mm; 14 passage 11mm; 15 passage 10mm; Final pass 11.2mm.
Slotless steel rolling process of the present invention also comprises the following steps:
1, in the 1st rolling passage, device therefor, steel rolling temperature, roll material and rolled piece material determine that correction factor is as follows during according to steel rolling:
(1), determines deformation of rolled wire correction factor C
1: use roughing mill, the distortion of rolled piece is bigger, C
1Get 1.015;
(2), determine rolled piece temperature correction coefficient C
2: the temperature of the first passage rolled piece is higher, C
2Get 1.010;
(3), determine roll material correction factor C
3: use ferrosteel roll C
3Get 0.975;
(4), determine steel billet kind correction factor C
4: use continuous-casting converter billet C
4Get 1.015;
(5), determine steel grade class correction factor C
5: use low-alloy steel billet C
5Get 0.9850;
2, determine every time rolling parameter:
(1), the rolled piece of determining every time according to every time drafts roll the back height and roll before the ratio η (coefficient of draught) of height; In this passage, calculate coefficient of draught η=100/150=0.6667;
(2), according to the ratio of height and the used roller diameter of rolling this passage before the rolling of every time rolled piece, determine roller footpath coefficient b; In this passage, calculate roller footpath coefficient b=150/510=0.2941; The working roll of this passage directly is 510mm.
(3), roll according to every time rolled piece before height and roll before the ratio of width, determine rolled piece section configuration coefficient a; In this passage, calculate rolled piece section configuration coefficient a=150/150=1;
(4), according to described roller footpath coefficient b and rolled piece section configuration coefficient a, that determines every time rolled piece spreads index 1gW=0.6485ab relatively
-0.0301In this passage, calculate and spread index W: 1gW=0.6485ab relatively
-0.0301=0.6485*1*1.0375=0.6728, W=4.7098;
3,, determine relative spread coefficient β=1.02 η of the first passage rolled piece according to above-mentioned determined each parameter
wc
1c
2c
3c
4c
5
＝1.02×0.6667
4.7098×1.015×1.010×0.9750×1.015×0.9850
＝0.1511
4, according to the preceding width B of rolling of every time rolled piece
o, determine the back width B of rolling of every time rolled piece
1Be B
1=B
o+ B
oβ; In this passage, rolled piece roll the back width B
1=150+150 * 0.1511=172.7mm.
5, with no grooved roller rolled piece is rolled width B after the rolled piece that calculates through abovementioned steps rolls
1Roll back width difference greater than 5% o'clock, then again to above-mentioned correction factor C with the actual of every time rolled piece
1, C
2, C
3, C
4, C
5Revise respectively, make the rolled piece of calculating roll the back width B
1Be complementary with the actual back width that rolls of every time rolled piece, then according to the back width B of rolling of preceding a time rolled piece
1Guide and guard parameter when the adjustment rolled piece enters down a time is complementary guide and guard parameter of a time and rolled piece parameter, as: the entrance width of adjusting guide and guard also makes it to be complementary with the thickness of rolled piece, prevents that rolled piece from reversing; The inlet height of adjusting the position height of guide and guard and making it to enter with rolled piece guide and guard is complementary, and prevents to block when rolled piece from entering guide and guard; Guarantee that rolled piece can be by effectively rolling after entering down a time roll through these guide and guard; Repeat above-mentioned steps, enter finished product hole shape roll until rolled piece and roll out finished product.
In this passage, the rolled piece that calculates through abovementioned steps rolls the back width B
1Be 172.7mm, with rolled piece width 173mm after no grooved roller is actual rolling relatively, computational accuracy satisfies rolling requirement, promptly the rolled piece that calculates through abovementioned steps rolls the back width B
1The actual back width 173mm difference of rolling of=172.7mm and this passage rolled piece is less than 5%.According to the back width B of rolling of this passage
1Guide and guard parameter to following a time is adjusted, and guide and guard parameter of a time and rolled piece parameter are complementary, and guarantees that rolled piece can be by effectively rolling after entering down a time roll through these guide and guard.
The calculating of spreading of follow-up passage is analogized.
Embodiment 2:
A certain have thick, in, adopt slotless steel rolling process of the present invention to carry out steel rolling production on the production line of bar of 18 rolling mills of mm finishing mill unit, selecting the length of side for use is 200mm, the billet of long 12000mm, 1050 ℃ of start rolling temperatures roll out the smooth bar of Φ 25mm.
At first determine the total contraction percentage of area of rolled piece, and determine the drafts of every time rolled piece, determine total rolling pass then according to the capacity of equipment of used each milling train according to basal area before the rolling of rolled piece and finished product basal area.
The steel billet basal area is: 40000mm
2, the finished product basal area is: 491mm
2, total contraction percentage of area is: 97.77%.According to the high-temp plastic of steel, that equipment characteristic is determined is thick, in roll general employing 20%～30% big contraction percentage of area, mm finishing mill unit guarantees that the product precision adopts 10%～20% contraction percentage of area.Determine to use 16 passages to depress, according to the equipment characteristic of each passage milling train, determine that the drafts of each passage rolled piece is respectively: 1 passage 55mm; 2 passage 73mm; 3 passage 50mm; 4 passage 65mm; 5 passage 70mm; 6 passage 50mm; 7 passage 42mm; 8 passage 52mm; 9 passage 24mm; 10 passage 42mm; 11 passage 25mm; 12 passage 29mm; 13 passage 12mm; 14 passage 11mm; 15 passage 13mm; Final pass 13.2mm.
Slotless steel rolling process of the present invention also comprises the following steps:
1, in the 1st rolling passage, device therefor, steel rolling temperature, roll material and rolled piece material determine that correction factor is as follows during according to steel rolling:
(1), determines deformation of rolled wire correction factor C
1: use roughing mill, the distortion of rolled piece is bigger, C
1Get 0.950;
(2), determine rolled piece temperature correction coefficient C
2: 1050 ℃ of the temperature of the first passage rolled piece, C
2Get 0.998;
(3), determine roll material correction factor C
3: use cast steel roll C
3Get 0.815;
(4), determine steel billet kind correction factor C
4: use continuous-casting converter billet C
4Get 1.015;
(5), determine steel grade class correction factor C
5: use normal carbon steel billet C
5Get 0.805;
2, determine every time rolling parameter:
(1), the rolled piece of determining every time according to every time drafts roll the back height and roll before the ratio η (coefficient of draught) of height; In this passage, calculate coefficient of draught η=145/200=0.7250;
(2), according to the ratio of height and the used roller diameter of rolling this passage before the rolling of every time rolled piece, determine roller footpath coefficient b; In this passage, calculate roller footpath coefficient b=200/650=0.3077; The working roll of this passage directly is 650mm.
(3), roll according to every time rolled piece before height and roll before the ratio of width, determine rolled piece section configuration coefficient a; In this passage, calculate rolled piece section configuration coefficient a=200/200=1;
(4), according to described roller footpath coefficient b and rolled piece section configuration coefficient a, that determines every time rolled piece spreads index 1gW=0.6485ab relatively
-0.0301In this passage, calculate and spread index W: 1gW=0.6485ab relatively
-0.0301=0.6485*1*1.0361=0.6719, W=4.6981;
3,, determine relative spread coefficient β=1.02 η of the first passage rolled piece according to above-mentioned determined each parameter
wc
1c
2c
3c
4c
5
＝1.02×0.725
4.7098×0.950×0.998×0.815×1.015×0.805
＝0.1421
4, according to the preceding width B of rolling of every time rolled piece
o, determine the back width B of rolling of every time rolled piece
1Be B
1=B
o+ B
oβ; In this passage, rolled piece roll the back width B
1=200+200 * 0.1421=228.4mm.
5, with no grooved roller rolled piece is rolled width B after the rolled piece that calculates through abovementioned steps rolls
1Roll back width difference greater than 5% o'clock, then again to above-mentioned correction factor C with the actual of every time rolled piece
1, C
2, C
3, C
4, C
5Revise respectively, make the rolled piece of calculating roll the back width B
1Be complementary with the actual back width that rolls of every time rolled piece, then according to the back width B of rolling of preceding a time rolled piece
1Guide and guard parameter when the adjustment rolled piece enters down a time is complementary guide and guard parameter of a time and rolled piece parameter, as: the entrance width of adjusting guide and guard also makes it to be complementary with the thickness of rolled piece, prevents that rolled piece from reversing; The inlet height of adjusting the position height of guide and guard and making it to enter with rolled piece guide and guard is complementary, and prevents to block when rolled piece from entering guide and guard; Guarantee that rolled piece can be by effectively rolling after entering down a time roll through these guide and guard; Repeat above-mentioned steps, enter finished product hole shape roll until rolled piece and roll out finished product.
In this passage, the rolled piece that calculates through abovementioned steps rolls the back width B
1Be 228.4mm, computational accuracy satisfies rolling requirement.According to the back width B of rolling of this passage
1Guide and guard parameter to following a time is adjusted, and guide and guard parameter of a time and rolled piece parameter are complementary, and guarantees that rolled piece can be by effectively rolling after entering down a time roll through these guide and guard.
Follow-up passage is calculated and is analogized.
Value explanation about each correction factor in the slotless steel rolling process of the present invention:
For C
1～C
5Span to determine according to the actual rolling situation of each steel rolling mill.
For C
1Value, when the little square billet of the rolling length of side 100～120mm, when adopting the heavy reduction of 40～50mm, and under the less situation of roller diameter, during the rolled alloy steel rolled piece spread bigger, for the roughing unit, C
1Answer capping.When the rolling length of side 180～220mm than bloom or rectangular bloom, when adopting the drafts of 40～60mm, and under the bigger situation of roller diameter, rolling temperature is lower, during rolling straight carbon steel, for the roughing unit, C
1Should take off limit.
C
2Value to be generally rolling temperature high more, value is limit on the lower side, on the contrary limit on the upper side then.
C
3Value need to determine according to roll material, actual roll material has multiple, as: cast steel or ferrosteel roll, grain roll, high nickel chromium triangle cast steel roll, middle nickel chromium triangle cast steel roll etc., acicular bainite grain roll, spheroidal graphite roll, ferrite cast iron roll, Lanzcast iron roll etc., high alloy forged steel roll, middle alloy forged steel roll etc., the stainless steel roll, hard alloy roll and chilled roll or the like all can be used for rolling of sectional iron, so C
3A given scope is comparatively reasonable, and scope is 0.795～1.015.The roll material coefficient of friction is big more, C
3Value is limit on the lower side.
C
4Value determine according to the steel billet kind, when the steel billet kind is roughed bloom, C
4For taking off limit, when the steel billet kind is continuous casting billet, C
4Capping.
C
5Value determine that according to rolling steel grade general institute steel rolling intensity is high more, C
5Value is limit on the upper side, otherwise institute's steel rolling intensity is low, C
5Value is limit on the lower side.
Claims (1)
- A kind of slotless steel rolling process of rolling section bar, it is characterized in that this technology comprises the following steps: at first to determine the total contraction percentage of area of rolled piece according to preceding basal area of rolling of rolled piece and finished product basal area, and determine the drafts of every time rolled piece according to the capacity of equipment of used each milling train, determine total rolling pass then; This slotless steel rolling process also comprises the following steps:A, at rolling every time, device therefor, steel rolling temperature, roll material and rolled piece material determine that correction factor is as follows during according to steel rolling: (1), determine deformation of rolled wire correction factor C 1: for roughing unit, C 1Be 0.950～1.245; For middle milling train group and mm finishing mill unit, C 1Be 0.875～1.115; (2), determine rolled piece temperature correction coefficient C 2: when rolling temperature is 900 ℃～1150 ℃, C 2Be 0.991～1.012; (3), determine roll material correction factor C 3: for different types of roll, C 3Be 0.795～1.015; (4), determine strip plate kind correction factor C 4: for roughed bloom, electric furnace continuous casting base or continuous-casting converter billet, C 4Be 1.000～1.015; (5), determine rolling steel grade correction factor C 5: for common straightcarbon steel, Fine Steel Casting iron, low-alloy structural steel, structural alloy steel, C 5Be 0.785～1.115;B, determine every time rolling parameter:(1), the rolled piece of determining every time according to every time drafts roll the back height and roll before the ratio η of height; (2), according to the ratio of height and the used roller diameter of rolling this passage before the rolling of every time rolled piece, determine roller footpath coefficient b; (3), roll according to every time rolled piece before height and roll before the ratio of width, determine rolled piece section configuration coefficient a; (4), according to described roller footpath coefficient b and rolled piece section configuration coefficient a, that determines every time rolled piece spreads index lgW=0.6485ab relatively -0.0301C, according to above-mentioned determined each parameter, determine relative spread coefficient β=1.02 η of every time rolled piece wC 1C 2C 3C 4C 5D, according to the preceding width B of rolling of every time rolled piece o, determine the back width B of rolling of every time rolled piece 1Be B 1=B o+ B oβ;E, rolled piece is rolled width B after the rolled piece that calculates through abovementioned steps rolls with no grooved roller 1Roll back width difference greater than 5% o'clock, then again to above-mentioned correction factor C with the actual of every time rolled piece 1, C 2, C 3, C 4, C 5Revise respectively, make the rolled piece of calculating roll the back width B 1Be complementary with the actual back width that rolls of every time rolled piece, then according to the back width B of rolling of preceding a time rolled piece 1Guide and guard parameter when the adjustment rolled piece enters down a time is complementary guide and guard parameter of a time and rolled piece parameter, guarantees that rolled piece can be by effectively rolling after entering down a time roll through these guide and guard; Repeat above-mentioned steps, enter finished product hole shape roll until rolled piece and roll out finished product.
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|---|---|---|---|
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|---|---|---|---|
| CNB2006100551442A CN100369680C (en) | 2006-02-21 | 2006-02-21 | Slot-less rolling technique of rolling section |
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| CN101901280A (en) * | 2009-06-01 | 2010-12-01 | 上海宝信软件股份有限公司 | Method for obtaining broadening by using computer program |
| CN102744268A (en) * | 2012-07-03 | 2012-10-24 | 中冶南方（武汉）信息技术工程有限公司 | Method for confirming depressurizing distribution of single-rack reversible cold-rolling mill |
| CN113976623A (en) * | 2021-12-28 | 2022-01-28 | 邯郸一三高研科技有限公司 | High-speed cold-rolling straight steel bar production process |
| CN115069780A (en) * | 2022-05-27 | 2022-09-20 | 广西广盛新材料科技有限公司 | Rolling mill control method and device, terminal equipment and readable storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1192425A (en) * | 1981-08-05 | 1985-08-27 | Tadaaki Yanazawa | Method of rolling steel rods and wires with grooveless rolls and grooveless rolling entry guide |
| CN1164377C (en) * | 2001-06-11 | 2004-09-01 | 大冶特殊钢股份有限公司 | Technology and guide apparatus for rolling round steel of flat steel without pass |
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2006
- 2006-02-21 CN CNB2006100551442A patent/CN100369680C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007315B (en) * | 2007-01-18 | 2010-10-06 | 湖南华菱涟源钢铁有限公司 | Slotless rolling process of full horizontal rolling mill |
| CN101901280A (en) * | 2009-06-01 | 2010-12-01 | 上海宝信软件股份有限公司 | Method for obtaining broadening by using computer program |
| CN101901280B (en) * | 2009-06-01 | 2014-03-05 | 上海宝信软件股份有限公司 | Method for obtaining broadening by using computer program |
| CN102744268A (en) * | 2012-07-03 | 2012-10-24 | 中冶南方（武汉）信息技术工程有限公司 | Method for confirming depressurizing distribution of single-rack reversible cold-rolling mill |
| CN102744268B (en) * | 2012-07-03 | 2014-06-11 | 中冶南方（武汉）信息技术工程有限公司 | Method for confirming depressurizing distribution of single-rack reversible cold-rolling mill |
| CN113976623A (en) * | 2021-12-28 | 2022-01-28 | 邯郸一三高研科技有限公司 | High-speed cold-rolling straight steel bar production process |
| CN113976623B (en) * | 2021-12-28 | 2022-03-22 | 邯郸一三高研科技有限公司 | High-speed cold-rolling straight steel bar production process |
| CN115069780A (en) * | 2022-05-27 | 2022-09-20 | 广西广盛新材料科技有限公司 | Rolling mill control method and device, terminal equipment and readable storage medium |
| CN115069780B (en) * | 2022-05-27 | 2024-10-22 | 广西广盛新材料科技有限公司 | Rolling mill control method and device, terminal equipment and readable storage medium |
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| CN100369680C (en) | 2008-02-20 |
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