CN103658174B - Hot-tandem unit - Google Patents
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- CN103658174B CN103658174B CN201310649119.7A CN201310649119A CN103658174B CN 103658174 B CN103658174 B CN 103658174B CN 201310649119 A CN201310649119 A CN 201310649119A CN 103658174 B CN103658174 B CN 103658174B
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Abstract
The invention provides a kind of hot-tandem unit, described mm finishing mill unit comprises six frames, each frame comprises top working roll for rolled band steel and bottom working roll, and be respectively arranged with flipper guide in the both sides of the entrance of each frame, the roll-in of six frames is set to-0.20 ~+0.1mm respectively,-0.35 ~+0.10mm,-0.35 ~+0.10mm,-0.20 ~+0.05mm,-0.15 ~+0.05 and-0.15 ~-0.05mm, difference in height between the basal surface of the flipper guide in each frame and the upper roll surface of corresponding bottom working roll is set to 0 ~ 5mm respectively, 5 ~ 10mm, 5 ~ 10mm, 5 ~ 10mm, 10 ~ 15mm and 10 ~ 15mm.Described hot-tandem unit can solve " nose " problem occurred in the band steel process of rolling special kinds effectively, thus improves rolling lumber recovery and operating efficiency.
Description
Technical field
The present invention relates to a kind of corollary equipment of hot continuous rolling technical field, more particularly, the present invention relates to a kind of hot-tandem unit.
Background technology
Hot continuous rolling is with slab (being mainly continuous casting billet) for raw material, after heating, make band steel by roughing mills and mm finishing mill unit.In hot tandem, mm finishing mill unit is made up of six framves or seven stand four-high rolling mills usually.Fig. 1 is the diagram schematically showing hot-tandem unit.Seven frame finish rolling four-high mill units have been shown in Fig. 1, and described seven frames are along the rolling direction number consecutively F1 ~ F7 of band steel, and each milling train comprises upper and lower two roller systems, and each roller system comprises backing roll and working roll.Due in common hot tandem, hot-rolling finishing mill top and bottom rolls adopts central driving, namely up-down rollers rotational angular velocity is equal, therefore, steady in order to be conducive to the threading of band steel in mm finishing mill unit, avoid producing threading failure because of band steel " discount " or " nose ", rolling useless or damage equipment, the working roll of milling train all configures certain roll-in.Generally speaking, roll-in is the difference of the diameter of top working roll and bottom working roll, and wherein, when the diameter of top working roll is greater than the diameter of bottom working roll, roll-in is just, roll-in is now called positive roll-in or upper roll-in (being called for short " upper pressure "); When the diameter of top working roll is less than the diameter of bottom working roll, roll-in is negative, and roll-in is now called negative roll-in or lower roll-in (being called for short " pressing down ").Under normal circumstances, the finished frame of hot continuous rolling frame adopts lower roll-in, roll-in in other employing.For six frame mm finishing mill unit, described six frames are numbered as F1 ~ F6 respectively according to the order that band steel is rolled, and its roll-in configuration is usually as shown in table 1.
The roll-in configuration of table 1 six frame mm finishing mill unit precision rolling working roll and roller footpath scope
Usually, in order to improve utilization ratio and the production efficiency of equipment, each metalloid material of mixed production has become a kind of development trend that hot continuous rolling is produced, that is, article one, hot continuous rolling production line is both for the production of common iron kind, also for the production of stainless steel or some special non-ferrous metal.But, when the band steel of the mm finishing mill unit rolling special kinds utilizing the roll-in shown in table 1 to configure (such as: certain non-ferrous metal A), band steel 1 is nipped along rolling direction (direction as shown in arrow horizontal in Fig. 2) by the top working roll 20 rotated and bottom working roll 30, there will be strip steel head " nose " situation as shown in Figure 2 when passing frame.Particularly, when rolling non-ferrous metal A, band steel head when passing frame occurs that the main conditions of " nose " are:
(1) thickness range of the product of hot continuous rolling production line rolling is general very wide, is generally 1.20mm ~ 12.7mm (six frame mm finishing mill unit), 1.20mm ~ 25.4mm (seven frame mm finishing mill unit).In rolling crossing process, all there is nose in various degree in the finishing stand F1 ~ F4, the F5 that pass in mm finishing mill unit with steel, and exist by the cumulative trend of frame nose degree, when nose degree exceed to a certain degree and directly cause entering downstream frame time, threading failure will be there is, roll the situations such as useless, even if threading success reluctantly, also there will be the phenomenon that head folds, rolls brokenly, seriously affects the quality of product and the safety of equipment.
(2) though because the upper and lower roll system of each frame of hot-tandem unit is respectively as a separate machine dynamical system, be all same motor by gear-box central driving, the angular speed of upper and lower working roll is equal.Normal, when top working roll is different with the diameter of bottom working roll, in rolling ordinary steel product process, band steel there will be to the little curving of diameter or there is warp tendency.But, when this non-ferrous metal of rolling A, but there is contrary situation, and occur the top roll of working roll be press-fitted put larger, the more serious trend of band steel " nose " degree.
(3) under the prerequisite of precision ensureing relevant device, phenomenon in above-mentioned (2) and the interaction of rolling kind and roll shop building, material characteristic, operational characteristic etc. have close relationship, when adopting the mm finishing mill unit of the roll-in of rolling common variety configuration to carry out rolling non-ferrous metal A, the special substance of non-ferrous metal A obviously can affect the change of the roll surface roughness of roll, and (diameter of working roll is larger, described change is more obvious), final generation a kind of " adhesion ", and show with the form of serious " nose ".
In sum, due to the material characteristic of the band steel of different cultivars, operational characteristic and differing greatly with the interaction of roll shop building, so can not meet or adapt to the product of some special kinds of rolling by the mm finishing mill unit being applicable to the band steel of rolling common variety shown in table 1, especially in some non-ferrous metal of rolling or stainless process, there is serious " nose " problem, band steel is caused can not normally to enter downstream frame, directly can cause threading failure, roll the problems such as useless, even relevant device is caused damage, also operating efficiency can be reduced simultaneously, affect whole production line and cause great economic loss.
Summary of the invention
For the problems referred to above, the present invention is by carrying out research and analysis to the causation and mechanism of " nose " that occur in special kinds (such as: certain non-ferrous metal A or the stainless steel) processes such as hot-tandem unit rolling non-ferrous metal, a kind of hot-tandem unit is provided, described hot-tandem unit can solve " nose " this technical barrier that milling train runs into when special kinds such as rolling non-ferrous metals effectively, to realize the stable rolling of product, and effectively reduce useless, defect rate, thus improve rolling lumber recovery and operating efficiency.
According to embodiments of the invention, a kind of hot-tandem unit is provided, described hot-tandem unit comprises six frames, four finishing stands are comprised along being with six frames described in the rolling direction of steel, finished product forebay and finished frame, described each frame comprises top working roll for rolled band steel and bottom working roll, and be respectively arranged with flipper guide in the both sides of the entrance of described each frame, the roll-in of described six frames is set to-0.20mm ~+0.1mm respectively,-0.35mm ~+0.10mm,-0.35mm ~+0.10mm,-0.20mm ~+0.05mm,-0.15mm ~+0.05mm and-0.15mm ~-0.05mm, difference in height between the basal surface of the flipper guide in described each frame and the upper roll surface of corresponding bottom working roll is set to 0mm ~ 5mm respectively, 5mm ~ 10mm, 5mm ~ 10mm, 5mm ~ 10mm, 10mm ~ 15mm and 10mm ~ 15mm.
According to one embodiment of present invention, the roll-in of described six frames is set to+0.05mm ,-0.20mm ,-0.30mm ,+0.03mm ,-0.08mm and-0.05mm respectively, and the difference in height between the basal surface of the flipper guide in described each frame and the upper roll surface of corresponding bottom working roll is set to 3.5mm, 7.0mm, 8.3mm, 7.0mm, 13.0mm and 12.5mm respectively.
According to another embodiment of the present invention, the roll-in of described six frames is set to-0.17mm ,-0.30mm ,-0.29mm ,-0.13mm ,-0.07mm and-0.05mm respectively, and the difference in height between the basal surface of the flipper guide in described each frame and the upper roll surface of corresponding bottom working roll is set to 4mm, 6.5mm, 7.0mm, 8.3mm, 12.5mm and 13.0mm respectively.
According to still another embodiment of the invention, the roll-in of described six frames is set to-0.20mm ,-0.05mm ,-0.08mm ,-0.13mm ,-0.12mm and+0.05mm respectively, and the difference in height between the basal surface of the flipper guide in described each frame and the upper roll surface of corresponding bottom working roll is set to 2.7mm, 8.7mm, 9.2mm, 6.5mm, 13.7mm and 12.1mm respectively.
According to embodiments of the invention, a kind of hot-tandem unit is provided, described hot-tandem unit comprises seven frames, five finishing stands are comprised along being with seven frames described in the rolling direction of steel, finished product forebay and finished frame, described each frame comprises top working roll for rolled band steel and bottom working roll, and be respectively arranged with flipper guide in the both sides of the entrance of described each frame, the roll-in of described seven frames is set to-0.30mm ~+0.1mm respectively,-0.40mm ~+0.10mm,-0.40mm ~+0.10mm,-0.30mm ~+0.05mm,-0.20mm ~+0.05mm,-0.20mm ~-0.05mm and-0.20mm ~-0.05mm, difference in height between the basal surface of the flipper guide in described each frame and the upper roll surface of corresponding bottom working roll is set to 0mm ~ 5mm respectively, 5mm ~ 10mm, 5mm ~ 10mm, 5mm ~ 10mm, 5mm ~ 10mm, 10mm ~ 15mm and 10mm ~ 15mm.
According to one embodiment of present invention, the roll-in of described seven frames is set to-0.15mm ,-0.26mm ,-0.13mm ,-0.11mm ,-0.05mm ,-0.04mm and+0.07mm respectively, and the difference in height between the basal surface of the flipper guide in described each frame and the upper roll surface of corresponding bottom working roll is set to 3.5mm, 6.7mm, 8.0mm, 7.5mm, 8.7mm, 11.5mm and 14.0mm respectively.
According to another embodiment of the present invention, the roll-in of described seven frames is set to+0.08mm ,-0.3mm ,-0.23mm ,-0.07mm ,+0.03mm ,-0.08mm and+0.02mm respectively, and the difference in height between the basal surface of the flipper guide in described each frame and the upper roll surface of corresponding bottom working roll is set to 3.5mm, 6.7mm, 8.0mm, 7.5mm, 8.7mm, 11.5mm and 14.0mm respectively.
After hot-tandem unit described in employing, significantly " nose " phenomenon is there will not be in the process of rolling special kinds, thus efficiently solve " nose " problem of the special kinds rolled pieces such as rolling non-ferrous metal and stainless steel, make the band steel of special kinds be rolled into power and lumber recovery is improved.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that hot-tandem unit is shown;
Fig. 2 illustrates strip steel head in the operation of rolling " nose " schematic diagram;
Fig. 3 shows the roller system of four-high mill and the schematic diagram of flipper guide.
Detailed description of the invention
Now with reference to accompanying drawing, exemplary embodiment of the present invention is more fully described.
In the following description, exemplarily present invention is described to adopt four-high mill, but the present invention is not limited to this.
According to embodiments of the invention, provide a kind of hot-tandem unit, described hot-tandem unit comprises six frames, comprises four finishing stand F1 ~ F4, finished product forebay F5 and finished frame F6 along being with six frames described in the rolling direction of steel.Wherein, each frame can be all four-high mill.Fig. 3 shows the roller system of four-high mill and the schematic diagram of flipper guide.As shown in Figure 3, described four-high mill comprises: upper roller system; Lower roll system; Flipper guide 6, is separately positioned on the both sides of entrance; Entrance defends plate 7, is arranged on entrance side, and wherein, upper roller system comprises upper backup roll 4 and top working roll 2, and lower roll system comprises lower backing roll 5 and bottom working roll 3.Flipper guide 6 and entrance are defended pilot tape steel 1 together with plate 7 and are entered frame, and are sent into exactly between top working roll 2 and bottom working roll 3 by described band steel and be rolled.Wherein, corresponding top working roll 2 and corresponding bottom working roll 3 refer to the working roll be arranged on flipper guide 6 in same frame.It should be noted that, the present invention is not limited to this, and in the present embodiment, frame can also be other forms, such as, and duo mill or six-high cluster mill etc.In addition, for the hot-tandem unit comprising six frames, flipper guide 6 is provided with in the porch of each frame (in the present embodiment, being four-high mill) and entrance defends plate 7.
The difference of the diameter of top working roll 2 and bottom working roll 3 is called roll-in, and wherein, when the diameter of top working roll 2 is greater than the diameter of bottom working roll 3, roll-in is just, roll-in is now called positive roll-in or upper roll-in (being called for short " upper pressure "); When the diameter of top working roll 2 is less than the diameter of bottom working roll 3, roll-in is negative, and roll-in is now called negative roll-in or lower roll-in (being called for short " pressing down ").Difference in height between the basal surface of the flipper guide 6 in each frame and the upper roll surface of corresponding bottom working roll 3 is designated as △ h.The size of difference in height △ h also can have influence on the shape of strip steel head.If difference in height △ h is excessive or too small, then the head with steel easily clash into when passing milling train be arranged on rolling-mill housing exit defend plate, therefore can make the head generation deformation of described band steel and there will be the situation of " nose ".
The roll-in of six frames of described hot-tandem unit arranges as follows respectively: the roll-in of finishing stand F1 is-0.20mm ~+0.1mm, the roll-in of finishing stand F2 is-0.35mm ~+0.10mm, the roll-in of finishing stand F3 is-0.35mm ~+0.10mm, the roll-in of finishing stand F4 is-0.20mm ~+0.05mm, the roll-in of finished product forebay F5 is-0.15mm ~+0.05mm, the roll-in of finished frame F6 is-0.15mm ~-0.05mm, and the difference in height △ h between the upper roll surface of the basal surface of the flipper guide 6 in described each frame and corresponding bottom working roll 3 arranges as follows respectively: finishing stand F1 is 0mm ~ 5mm, finishing stand F2 is 5mm ~ 10mm, finishing stand F3 is 5mm ~ 10mm, finishing stand F4 is 5mm ~ 10mm, finished product forebay F5 is 10mm ~ 15mm and finished frame F6 is 10mm ~ 15mm.Roll-in and the roller footpath scope of each frame in six frame mm finishing mill unit is according to an embodiment of the invention particularly illustrated in table 2.
The roll-in of each frame of table 2 six frame mm finishing mill unit and roller footpath scope
Adopting above-mentioned roll-in and difference in height △ h to configure, band steel can being made first to contact top working roll when entering frame, make described hot-tandem unit in the process of rolled band steel, efficiently avoid the generation of " nose " situation.In addition, can also not suffer damage because of " nose " problem by proterctive equipment.Therefore, after adopting hot-tandem unit provided by the present invention, the lumber recovery of product can be improved, simultaneously also can proterctive equipment effectively.
Below in conjunction with specific embodiments of the invention, the hot-tandem unit comprising six frames provided by the present invention is described.
Embodiment one:
According to six frame mm finishing mill unit of embodiment, rolling direction along band steel comprises finishing stand F1 ~ F4, finished product forebay F5 and finished frame F6 successively, wherein, the roll-in of described six frames can arrange as follows respectively: F1 is-0.30mm, F4 for+0.05mm, F2 are-0.20mm, F3 is-0.05mm for+0.03mm, F5 are-0.08mm and F6; Difference in height △ h between the basal surface of the flipper guide 6 in each frame and the upper roll surface of corresponding bottom working roll 3 can arrange as follows respectively: F1 is 4mm, F2 be 8mm, F3 be 7mm, F4 be 8mm, F5 be 12mm and F6 is 14mm.
Adopt the hot-tandem unit described in embodiment one, certain special non-ferrous metal A is rolled.The rolling specs (thick × wide) of non-ferrous metal A can be respectively 3.0mm × 1250mm, 5.0mm × 1250mm, 8.0mm × 1250mm, 12.0mm × 1250mm, 10.0mm × 1050mm, and rolling quantity is 450 tons.
Embodiment two:
According to six frame mm finishing mill unit of embodiment, rolling direction along band steel comprises finishing stand F1 ~ F4, finished product forebay F5 and finished frame F6 successively, wherein, the roll-in of described six frames can arrange as follows respectively: F1 is-0.29mm, F4 for-0.17mm, F2 are-0.30mm, F3 is-0.05mm for-0.13mm, F5 are-0.07mm and F6; Difference in height △ h between the basal surface of the flipper guide 6 in each frame and the upper roll surface of corresponding bottom working roll 3 can arrange as follows respectively: F1 is 3mm, F2 be 5mm, F3 be 6mm, F4 be 7mm, F5 be 10mm and F6 is 12mm.
Adopt the hot-tandem unit described in embodiment two, certain special non-ferrous metal A is rolled, the rolling specs (thick × wide) of non-ferrous metal A can be respectively 3.0mm × 1250mm, 4.0mm × 1250mm, 4.5mm × 1250mm, 6.0mm × 1250mm, 7.0mm × 1250mm, 6.0mm × 1050mm, and rolling quantity is 420 tons.
Embodiment three:
According to six frame mm finishing mill unit of embodiment, rolling direction along band steel comprises finishing stand F1 ~ F4 successively, finished product forebay F5 and finished frame F6, wherein, the roll-in of described six frames can arrange as follows respectively: F1 is-0.20mm, F2 is-0.05mm, F3 is-0.08mm, F4 is-0.13mm, F5 is-0.12mm and F6 is+0.05mm, difference in height △ h between the basal surface of the flipper guide 6 in each frame and the upper roll surface of corresponding bottom working roll 3 can arrange as follows respectively: F1 is 2mm, F2 is 4mm, F3 is 5mm, F4 is 6mm, F5 is 10mm and F6 is 11mm.
Adopt the hot-tandem unit described in embodiment three, certain special non-ferrous metal A is rolled.The rolling specs (thick × wide) of non-ferrous metal A can be respectively 2.5mm × 1050mm, 3.0mm × 1250mm, 4.0mm × 1250mm, 5.0mm × 1250mm, 6.0mm × 1250mm, 7.0mm × 1250mm, and rolling quantity is 367 tons.
According to embodiments of the invention, provide a kind of hot-tandem unit, described hot-tandem unit comprises seven frames, comprises five finishing stand F1 ~ F5, finished product forebay F6 and finished frame F7 along being with seven frames described in the rolling direction of steel.In the present embodiment, the structure of described seven frames is identical with the structure of above-described embodiment mid frame, does not repeat them here.
The roll-in of described seven frames arranges as follows respectively: the roll-in of finishing stand F1 is-0.30mm ~+0.1mm, the roll-in of finishing stand F2 is-0.40mm ~+0.10mm, the roll-in of finishing stand F3 is-0.40mm ~+0.10mm, the roll-in of finishing stand F4 is-0.30mm ~+0.05mm, the roll-in of finishing stand F5 is-0.20mm ~+0.05mm, the roll-in of finished product forebay F6 is-0.20mm ~-0.05mm, the roll-in of finished frame F7 is-0.20mm ~-0.05mm, and the difference in height △ h of described seven frames arranges as follows respectively: finishing stand F1 is 0mm ~ 5mm, finishing stand F2 is 5mm ~ 10mm, finishing stand F3 is 5mm ~ 10mm, finishing stand F4 is 5mm ~ 10mm, finishing stand F5 is 5mm ~ 10mm, finished product forebay F6 is 10mm ~ 15mm and finished frame F7 is 10mm ~ 15mm.
Below in conjunction with specific embodiments of the invention, the hot-tandem unit comprising seven frames provided by the present invention is described.
Embodiment four:
According to seven frame mm finishing mill unit of embodiment, rolling direction along band steel comprises finishing stand F1 ~ F5 successively, finished product forebay F6 and finished frame F7, wherein, the roll-in of described seven frames can arrange as follows respectively: F1 is-0.15mm, F2 is-0.26mm, F3 is-0.13mm, F4 is-0.11mm, F5 is-0.05mm, F6 is-0.04mm and F7 is+0.07mm, difference in height △ h between the basal surface of the flipper guide 6 in described each frame and the upper roll surface of corresponding bottom working roll 3 can arrange as follows respectively: F1 is 3.5mm, F2 is 6.7mm, F3 is 8.0mm, F4 is 7.5mm, F5 is 8.7mm, F6 is 11.5mm and F7 is 14.0mm.
Adopt the hot-tandem unit of embodiment four, certain special non-ferrous metal A is rolled.The rolling specs (thick × wide) of non-ferrous metal A can be respectively 3.0mm × 1250mm, 4.4mm × 1250mm, 6.0mm × 1250mm, 8.0mm × 1250mm, and rolling quantity is 280 tons.
Embodiment five:
According to seven frame mm finishing mill unit of embodiment, rolling direction along band steel comprises finishing stand F1 ~ F5, finished product forebay F6 and finished frame F7 successively, wherein, the roll-in of described seven frames can arrange as follows respectively: F1 for+0.08mm, F2 for-0.3mm, F3 for-0.23mm, F4 for-0.07mm, F5 for+0.03mm, F6 for-0.08mm and F7 be+0.02mm; Difference in height △ h between the basal surface of the flipper guide 6 in described each frame and the upper roll surface of corresponding bottom working roll 3 can arrange as follows respectively: F1 is 3.5mm, F2 be 6.7mm, F3 be 8.0mm, F4 be 7.5mm, F5 be 8.7mm, F6 be 11.5mm and F7 is 14.0mm.
Adopt the hot-tandem unit of embodiment five, certain special non-ferrous metal A is rolled.The rolling specs (thick × wide) of non-ferrous metal A can be respectively 4.5mm × 1250mm, 6.0mm × 1250mm, 7.0mm × 1250mm, 7.5mm × 1250mm, 8.0mm × 1250mm, and rolling quantity is 327 tons.
The production effect adopting hot-tandem unit provided by the present invention to be rolled according to different specification requirements non-ferrous metal A is as follows: band steel crossing process is all less than obvious " nose " phenomenon, and rolling is stablized; In addition, all do not occur that the head caused because of the problem of " nose " rolls brokenly, rolls the problems such as useless, thus significantly reduce waster rate, improve and be rolled into power and lumber recovery, make to be rolled into power and substantially reach 100%, lumber recovery reaches more than 97% substantially, achieves the mixed production of non-ferrous metal A and ordinary steel product.
As mentioned above, described hot-tandem unit has the roll-in of the working roll in each frame of reasonable disposition, and there is between the basal surface of the flipper guide in each frame and the upper roll surface of corresponding bottom working roll the difference in height rationally arranged, therefore, described hot-tandem unit is applicable to the hot continuous rolling of the special kinds such as non-ferrous metal and stainless steel, the product made from steel of the special kinds of such as non-ferrous metal A and the conllinear steady production of ordinary steel product can be realized, and without obvious " nose " phenomenon in the operation of rolling, improve and be rolled into power and lumber recovery, thus mill product quality can be significantly improved.In addition, the manufacture of described hot-tandem unit can not increase production cost and input, contributes to saving production cost.
Although specifically illustrate with reference to exemplary embodiment of the present invention and describe the present invention, but it should be understood by one skilled in the art that, when not departing from the spirit and scope of the present invention be defined by the claims, the various changes of form and details can be carried out to it.
Claims (7)
1. a hot-tandem unit, described mm finishing mill unit comprises six frames, four finishing stands are comprised along being with six frames described in the rolling direction of steel, finished product forebay and finished frame, described each frame comprises top working roll for rolled band steel and bottom working roll, and be respectively arranged with flipper guide in the both sides of the entrance of each frame, it is characterized in that, scope along the roll-in of being with the working roll of six frames described in the rolling direction of steel is set to-0.20mm ~+0.1mm respectively,-0.35mm ~+0.10mm,-0.35mm ~+0.10mm,-0.20mm ~+0.05mm,-0.15mm ~+0.05mm and-0.15mm ~-0.05mm, scope along the difference in height between the basal surface and the upper roll surface of corresponding bottom working roll of the flipper guide be with in each frame described in the rolling direction of steel is set to 0mm ~ 5mm respectively, 5mm ~ 10mm, 5mm ~ 10mm, 5mm ~ 10mm, 10mm ~ 15mm and 10mm ~ 15mm.
2. hot-tandem unit according to claim 1, it is characterized in that, roll-in along the working roll being with six frames described in the rolling direction of steel is set to+0.05mm ,-0.20mm ,-0.30mm ,+0.03mm ,-0.08mm and-0.05mm respectively, and the difference in height between the basal surface and the upper roll surface of corresponding bottom working roll of the flipper guide be with in each frame described in the rolling direction of steel is set to 3.5mm, 7.0mm, 8.3mm, 7.0mm, 13.0mm and 12.5mm respectively.
3. hot-tandem unit according to claim 1, it is characterized in that, roll-in along the working roll being with six frames described in the rolling direction of steel is set to-0.17mm ,-0.30mm ,-0.29mm ,-0.13mm ,+0.02mm and-0.05mm respectively, and the difference in height between the basal surface and the upper roll surface of corresponding bottom working roll of the flipper guide be with in each frame described in the rolling direction of steel is set to 4mm, 6.5mm, 7.0mm, 8.3mm, 12.5mm and 13.0mm respectively.
4. hot-tandem unit according to claim 1, it is characterized in that, the difference in height between the basal surface and the upper roll surface of corresponding bottom working roll of the flipper guide be with in each frame described in the rolling direction of steel is set to 2.7mm, 8.7mm, 9.2mm, 6.5mm, 13.7mm and 12.1mm respectively.
5. a hot-tandem unit, described mm finishing mill unit comprises seven frames, five finishing stands are comprised along being with seven frames described in the rolling direction of steel, finished product forebay and finished frame, described each frame comprises top working roll for rolled band steel and bottom working roll, and be respectively arranged with flipper guide in the both sides of the entrance of each frame, it is characterized in that, scope along the roll-in of being with the working roll of seven frames described in the rolling direction of steel is set to-0.30mm ~+0.1mm respectively,-0.40mm ~+0.10mm,-0.40mm ~+0.10mm,-0.30mm ~+0.05mm,-0.20mm ~+0.05mm,-0.20mm ~-0.05mm and-0.20mm ~-0.05mm, scope along the difference in height between the basal surface and the upper roll surface of corresponding bottom working roll of the flipper guide be with in each frame described in the rolling direction of steel is set to 0mm ~ 5mm respectively, 5mm ~ 10mm, 5mm ~ 10mm, 5mm ~ 10mm, 5mm ~ 10mm, 10mm ~ 15mm and 10mm ~ 15mm.
6. hot-tandem unit according to claim 5, it is characterized in that, the difference in height between the basal surface and the upper roll surface of corresponding bottom working roll of the flipper guide be with in each frame described in the rolling direction of steel is set to 3.5mm, 6.7mm, 8.0mm, 7.5mm, 8.7mm, 11.5mm and 14.0mm respectively.
7. hot-tandem unit according to claim 5, it is characterized in that, the difference in height between the basal surface and the upper roll surface of corresponding bottom working roll of the flipper guide be with in each frame described in the rolling direction of steel is set to 3.5mm, 6.7mm, 8.0mm, 7.5mm, 8.7mm, 11.5mm and 14.0mm respectively.
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| CN106475415B (en) * | 2016-10-17 | 2018-06-29 | 攀钢集团攀枝花钢钒有限公司 | The hot continuous rolling method of technical pure titanium or titanium alloy |
| CN108637014B (en) * | 2018-05-08 | 2019-11-22 | 攀钢集团西昌钢钒有限公司 | A kind of very thin steel band process of hot rolling |
| CN111570509B (en) * | 2020-05-13 | 2022-03-22 | 攀钢集团攀枝花钢钒有限公司 | Titanium strip rolling method for hot continuous rolling strip steel production line |
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| CN1012668B (en) * | 1985-12-14 | 1991-05-29 | 东北工学院 | Large elongation continue asynchronous cold continuous rolling mill and technology |
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| KR100938747B1 (en) * | 2007-01-22 | 2010-01-26 | 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 | Gauge control system |
| CN201147766Y (en) * | 2008-01-09 | 2008-11-12 | 曹全有 | Nine-roller straightener having different roller diameters |
| JP4585627B2 (en) * | 2008-03-04 | 2010-11-24 | 新日本製鐵株式会社 | Sheet rolling machine and sheet rolling method |
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