CN110181016B - 2+8 roller combined thick plate blank large-pressure casting and rolling machine - Google Patents
2+8 roller combined thick plate blank large-pressure casting and rolling machine Download PDFInfo
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- CN110181016B CN110181016B CN201910448269.9A CN201910448269A CN110181016B CN 110181016 B CN110181016 B CN 110181016B CN 201910448269 A CN201910448269 A CN 201910448269A CN 110181016 B CN110181016 B CN 110181016B
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- 238000005266 casting Methods 0.000 title claims abstract description 60
- 238000005096 rolling process Methods 0.000 title claims abstract description 27
- 230000009467 reduction Effects 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000005242 forging Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009749 continuous casting Methods 0.000 abstract description 26
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000010924 continuous production Methods 0.000 abstract 1
- 238000007711 solidification Methods 0.000 description 13
- 230000008023 solidification Effects 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011946 reduction process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
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- Continuous Casting (AREA)
Abstract
A2+8 roller combined thick plate blank large-pressure casting and rolling machine belongs to the technical field of continuous casting and production of plate blanks. Comprises a casting mill housing, an AGC hydraulic pressing device, a large pressing upper roller system balancing device, a large pressing upper roller system, a first auxiliary clamping upper roller, a second auxiliary clamping lower roller, a third auxiliary clamping upper roller, a fourth auxiliary clamping lower roller and the like, which are combined according to 2+8 rollers; the two casting mill housing is provided with two limiting slide ways on the inner side, and the limiting slide ways are in one-to-one correspondence with the upper roller and the lower roller of the auxiliary clamping; a balancing device of the large-pressure upper roller system is arranged between the large-pressure lower roller system and the large-pressure upper roller system; each of the four auxiliary clamping upper rollers is hinged with two auxiliary clamping upper roller lifting hydraulic cylinders; four auxiliary clamping lower rollers are arranged on the auxiliary clamping lower roller buffer device. The automatic rolling machine has the advantages that the automatic rolling machine has the functions of soft reduction and auxiliary clamping required by thick plate blank production, and the bulging is effectively prevented.
Description
Technical Field
The utility model belongs to the technical field of slab continuous casting production, and particularly relates to a 2+8 roller combined thick slab large-pressure casting and rolling machine. The defects of loose and shrinkage cavity inside the thick slab can be better overcome, the density of the continuous casting slab is comprehensively improved, and stable production of thick slabs and large-specification sectional materials under the condition of low rolling compression ratio is realized.
Background
With the rapid development of the mechanical manufacturing industry, the demand for thick slabs at home and abroad is also increased in a crossing manner. At present, the production of the medium plate adopts a method with large compression ratio to eliminate the defects of loose core and shrinkage cavity in the steel rolling process, limits the thickness of the thick plate rolled material and has high energy consumption.
The solidification end high-pressure technology of the continuous casting billet is developed based on the solidification end light-pressure technology. Practice proves that the dynamic soft reduction technology can effectively solve the problem of center segregation in the continuous casting billet, but has little effect on the problems of looseness and shrinkage cavity in the continuous casting billet. The continuous casting billet solidification end large reduction technology is a method for applying large reduction deformation to a casting billet when the central solid phase rate of the casting billet on a continuous casting production line reaches more than 80%, so that the core quality of the continuous casting billet is improved. The combination of the solidification end large-pressure technology and the solidification end light-pressure technology can remarkably improve the quality defects of center segregation, porosity and shrinkage cavity of the continuous casting slab, and can produce high-quality extra-thick slab under a lower compression ratio of 1.5 to 2.5.
The 'equipment' for realizing the continuous casting billet solidification end soft reduction technology is mature in the industry, and the 'equipment' for realizing the continuous casting billet solidification end soft reduction technology is actively researched and developed by various large metallurgical equipment companies in the world, and the current engineering application effect and the laboratory expected effect have a considerable gap. The disclosed equipment of the continuous casting billet solidification end large-reduction technology, such as the utility model patent of continuous casting machine sector section under the large reduction of the continuous casting billet solidification end and the large reduction method thereof (application number 201410325414.1), the utility model of heavy-pressure sector section for improving the loose shrinkage defect of a plate blank and the use method thereof (application number 201410695742.0), the utility model of the utility model patent of heavy-pressure sector section mechanism (application number 210420198534.5) and the utility model of sector section for plate blank heavy reduction (application number 201520394978.0).
The patent is a reiterative creation limited by the thought of the upper and lower frame structures of the traditional sector, the single-roller rolling reduction of the large rolling technology needs more than 10mm to permeate into the core of the thick slab, so that the defects of loose and shrinkage holes inside the thick slab are overcome, the single-roller rolling reduction of the wide and thick slab with the width of more than 2000mm reaches more than 1000 tons, the upper and lower frame structures of the traditional sector are difficult to bear the huge rolling reduction, and the technological thought of the patent is correct, but the formed new technical equipment is difficult to put into actual engineering application. In addition, in the production capacity of one thick plate blank continuous casting machine for several millions of years, the proportion of steel types needing to implement the solidification end large-reduction technology is about 10%, so that the developed new equipment must be compatible with other steel types with larger production ratio, and the light reduction function and the auxiliary clamping function of the new equipment cannot be influenced. The existing solidification tail end large-pressure technical equipment cannot well achieve the light-pressure function and the auxiliary clamping function.
Disclosure of Invention
The utility model aims to provide a 2+8 roller combined thick plate blank large-pressure casting and rolling machine, which solves the problem of loose and shrinkage defects in thick plate blanks caused by the production of the existing equipment. The compactness of the continuous casting billet is improved, and the stable production of thick plates and large-specification profiles under the condition of low rolling compression ratio is realized.
A2+8-roll combined thick plate blank large-reduction casting and rolling machine comprises a casting and rolling mill housing 1, an AGC hydraulic pressure reduction device 2, a lower roll wedge adjusting device 3, an upper cross beam 4, a lower cross beam 5, an auxiliary clamping upper roll lifting hydraulic cylinder 6, an auxiliary clamping upper roll supporting cross beam 7, an auxiliary clamping lower roll buffer device 8, an auxiliary clamping lower roll supporting cross beam 9, a large-reduction upper roll system balancing device 10, a large-reduction upper roll system 11, a large-reduction lower roll system 12, a first auxiliary clamping upper roll 21, a first auxiliary clamping lower roll 22, a second auxiliary clamping upper roll 23, a second auxiliary clamping lower roll 24, a third auxiliary clamping upper roll 25, a third auxiliary clamping lower roll 26, a fourth auxiliary clamping upper roll 27 and a fourth auxiliary clamping lower roll 28; the combination is carried out according to 2+8 rollers. The two casting mill housing 1 is provided with two limiting slide ways which are respectively arranged on the inner sides of the two housing and are in one-to-one correspondence with the upper roller and the lower roller of the auxiliary clamping; the casting mill housing 1 is connected with the lower beam 5 through the upper beam 4; the auxiliary clamping upper roller supporting cross beam 7 is positioned at the upper part of the casting mill housing 1; the bottom of the auxiliary clamping upper roller lifting hydraulic cylinder 6 is hung on an auxiliary clamping upper roller supporting beam 7, and an auxiliary clamping lower roller buffer device 8 is arranged on an auxiliary clamping lower roller supporting beam 9; two ends of the auxiliary clamping lower roller supporting cross beam 9 are connected with the lower part of the casting mill housing 1; the high-pressure upper roller system 11 and the high-pressure lower roller system 12 are positioned in the middle of the casting mill housing 1; the large-reduction lower roll system 12 is supported at the lower part of the casting mill housing 1 through the lower roll wedge adjusting device 3, the large-reduction upper roll system 11 is supported at the upper part of the casting mill housing 1 through the AGC hydraulic pressure reduction device 2, and a large-reduction upper roll system balancing device 10 is arranged between the large-reduction lower roll system 12 and the large-reduction upper roll system 11; the hydraulic pressing device is used for balancing the weight of the large-pressure upper roller system 11 and is matched with the AGC hydraulic pressing device 2 to realize the lifting of the large-pressure upper roller system 11; the first auxiliary clamping upper roller 21, the first auxiliary clamping lower roller 22, the second auxiliary clamping upper roller 23, the second auxiliary clamping lower roller 24, the third auxiliary clamping upper roller 25, the third auxiliary clamping lower roller 26, the fourth auxiliary clamping upper roller 27 and the fourth auxiliary clamping lower roller 28 are all positioned in a limit slideway at the inner side of the housing 1 of the casting machine; each of the four auxiliary clamping upper rollers is hinged with two auxiliary clamping upper roller lifting hydraulic cylinders 6; four auxiliary clamping lower rollers are arranged on the auxiliary clamping lower roller buffer device 8. The vertical independent adjustment and independent action of all auxiliary clamping rollers are realized, so that the casting and rolling machine can be easily switched among a large-reduction process, a light-reduction process and an auxiliary clamping process system.
The 2+8 roller combination comprises a pair of integral heat-resistant pressure-resistant forging steel driving rollers consisting of a large-pressure upper roller system 11 and a large-pressure lower roller system 12, and four pairs of auxiliary clamping segmented driven rollers consisting of a first auxiliary clamping upper roller 21, a first auxiliary clamping lower roller 22, a second auxiliary clamping upper roller 23, a second auxiliary clamping lower roller 24, a third auxiliary clamping upper roller 25, a third auxiliary clamping lower roller 26, a fourth auxiliary clamping upper roller 27 and a fourth auxiliary clamping lower roller 28, wherein the 2+8 roller combination is a work execution roller system of the casting and rolling machine; the 2+8 rollers are provided with displacement sensors and pressure sensors, so that accurate position control and pressure control can be realized.
The large-pressure upper roller system 11 and the large-pressure lower roller system 12 are hot work die steel integral forging steel driving rollers, the diameter is 700-1200 mm, the surface build-up welding thickness is 10-20 mm, and a single roller bears rolling force of more than 1000 t;
the first auxiliary clamping upper roller 21, the first auxiliary clamping lower roller 22, the second auxiliary clamping upper roller 23, the second auxiliary clamping lower roller 24, the third auxiliary clamping upper roller 25, the third auxiliary clamping lower roller 26, the fourth auxiliary clamping upper roller 27 and the fourth auxiliary clamping lower roller 28 are all segmented driven rollers with the diameter of 200-400 mm, and small roller spacing is adopted to prevent belly bulging;
the four auxiliary clamping lower rolls are arranged on the auxiliary clamping lower roll buffer device 8, and the roll surfaces of the four auxiliary clamping lower rolls and the outer arc of the casting machine are positioned at the same roll surface elevation under the light pressing and auxiliary clamping working conditions, so that the implementation of the light pressing and auxiliary clamping working conditions is facilitated; when the working condition is under large reduction, the four auxiliary clamping lower rollers can float downwards passively through the auxiliary clamping lower roller buffer device 8, so that casting blanks can be prevented from bulging, self-protection can be formed, and the casting blanks are prevented from being crushed by excessive reduction force. The stress of the auxiliary clamping roller is converted into the tensile force of the whole casting housing through the supporting cross beam, the whole stress is reasonable, and the compensation of the deformation of the casting housing is easier to realize.
The utility model has the advantages that: combines the advantages of high bearing capacity of the slab housing rolling mill and high-precision control of the AGC hydraulic pressing device. Meets the urgent requirement of engineering application of the 'continuous casting billet solidification tail end large-pressure technology', and simultaneously combines the light pressure and auxiliary clamping functions required by thick slab production.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model. The casting mill housing 1, the AGC hydraulic pressing device 2, the lower roller wedge adjusting device 3, the upper cross beam 4, the lower cross beam 5, the large-pressing upper roller system balancing device 10, the large-pressing upper roller system 11, the large-pressing lower roller system 12, the first auxiliary clamping upper roller 21, the first auxiliary clamping lower roller 22, the second auxiliary clamping upper roller 23, the second auxiliary clamping lower roller 24, the third auxiliary clamping upper roller 25, the third auxiliary clamping lower roller 26, the fourth auxiliary clamping upper roller 27 and the fourth auxiliary clamping lower roller 28.
Fig. 2 is a schematic side view of the present utility model. The auxiliary clamping upper roller lifting hydraulic cylinder 6, the auxiliary clamping upper roller supporting beam 7, the auxiliary clamping lower roller buffer device 8, the auxiliary clamping lower roller supporting beam 9, the first auxiliary clamping upper roller 21 and the first auxiliary clamping lower roller 22 are arranged in the housing 1 of the casting machine.
Fig. 3 is a schematic top view of the present utility model. The casting mill housing 1, the large reduction upper roll system 11, the large reduction lower roll system 12, the first auxiliary clamping upper roll 21, the first auxiliary clamping lower roll 22, the second auxiliary clamping upper roll 23, the second auxiliary clamping lower roll 24, the third auxiliary clamping upper roll 25, the third auxiliary clamping lower roll 26, the fourth auxiliary clamping upper roll 27 and the fourth auxiliary clamping lower roll 28.
Fig. 4 is a schematic view of the working principle of the roll system of the utility model. Wherein, casting mill housing 1, AGC hydraulic pressure screw-down device 2, lower roll slide wedge adjusting device 3, big-reduction upper roll system 11, big-reduction lower roll system 12, first auxiliary clamping upper roll 21, first auxiliary clamping lower roll 22, second auxiliary clamping upper roll 23, second auxiliary clamping lower roll 24, third auxiliary clamping upper roll 25, third auxiliary clamping lower roll 26, fourth auxiliary clamping upper roll 27, fourth auxiliary clamping lower roll 28.
Detailed Description
Specific embodiments of the casting machine will be described with reference to the accompanying drawings:
example 1
A2+8-roll combined thick plate blank large-reduction casting and rolling machine comprises a casting and rolling mill housing 1, an AGC hydraulic pressure reduction device 2, a lower roll wedge adjusting device 3, an upper cross beam 4, a lower cross beam 5, an auxiliary clamping upper roll lifting hydraulic cylinder 6, an auxiliary clamping upper roll supporting cross beam 7, an auxiliary clamping lower roll buffer device 8, an auxiliary clamping lower roll supporting cross beam 9, a large-reduction upper roll system balancing device 10, a large-reduction upper roll system 11, a large-reduction lower roll system 12, a first auxiliary clamping upper roll 21, a first auxiliary clamping lower roll 22, a second auxiliary clamping upper roll 23, a second auxiliary clamping lower roll 24, a third auxiliary clamping upper roll 25, a third auxiliary clamping lower roll 26, a fourth auxiliary clamping upper roll 27 and a fourth auxiliary clamping lower roll 28; the combination is carried out according to 2+8 rollers. The two casting mill housing 1 is provided with two limiting slide ways which are respectively arranged on the inner sides of the two housing and are in one-to-one correspondence with the upper roller and the lower roller of the auxiliary clamping; the casting mill housing 1 is connected with the lower beam 5 through the upper beam 4; the auxiliary clamping upper roller supporting cross beam 7 is positioned at the upper part of the casting mill housing 1; the bottom of the auxiliary clamping upper roller lifting hydraulic cylinder 6 is hung on an auxiliary clamping upper roller supporting beam 7, and an auxiliary clamping lower roller buffer device 8 is arranged on an auxiliary clamping lower roller supporting beam 9; two ends of the auxiliary clamping lower roller supporting cross beam 9 are connected with the lower part of the casting mill housing 1; the high-pressure upper roller system 11 and the high-pressure lower roller system 12 are positioned in the middle of the casting mill housing 1; the large-reduction lower roll system 12 is supported at the lower part of the casting mill housing 1 through the lower roll wedge adjusting device 3, the large-reduction upper roll system 11 is supported at the upper part of the casting mill housing 1 through the AGC hydraulic pressure reduction device 2, and a large-reduction upper roll system balancing device 10 is arranged between the large-reduction lower roll system 12 and the large-reduction upper roll system 11; the hydraulic pressing device is used for balancing the weight of the large-pressure upper roller system 11 and is matched with the AGC hydraulic pressing device 2 to realize the lifting of the large-pressure upper roller system 11; the first auxiliary clamping upper roller 21, the first auxiliary clamping lower roller 22, the second auxiliary clamping upper roller 23, the second auxiliary clamping lower roller 24, the third auxiliary clamping upper roller 25, the third auxiliary clamping lower roller 26, the fourth auxiliary clamping upper roller 27 and the fourth auxiliary clamping lower roller 28 are all positioned in a limit slideway at the inner side of the housing 1 of the casting machine; each of the four auxiliary clamping upper rollers is hinged with two auxiliary clamping upper roller lifting hydraulic cylinders 6; four auxiliary clamping lower rollers are arranged on the auxiliary clamping lower roller buffer device 8. The vertical independent adjustment and independent action of all auxiliary clamping rollers are realized, so that the casting and rolling machine can be easily switched among a large-reduction process, a light-reduction process and an auxiliary clamping process system.
The 2+8 roller combination comprises a pair of integral heat-resistant pressure-resistant forging steel driving rollers consisting of a large-pressure upper roller system 11 and a large-pressure lower roller system 12, and four pairs of auxiliary clamping segmented driven rollers consisting of a first auxiliary clamping upper roller 21, a first auxiliary clamping lower roller 22, a second auxiliary clamping upper roller 23, a second auxiliary clamping lower roller 24, a third auxiliary clamping upper roller 25, a third auxiliary clamping lower roller 26, a fourth auxiliary clamping upper roller 27 and a fourth auxiliary clamping lower roller 28, wherein the 2+8 roller combination is a work execution roller system of the casting and rolling machine; the 2+8 rollers are provided with displacement sensors and pressure sensors, so that accurate position control and pressure control can be realized.
The large-pressure upper roller system 11 and the large-pressure lower roller system 12 are hot work die steel integral forging steel driving rollers, the diameter is 820mm, the surface overlaying thickness is 20mm, and a single roller bears 1500t of rolling force. The purposes of heat resistance and high pressure resistance are realized, the grinding amount of about 20mm is provided, the height of the lower roll surface is accurately adjusted through the lower roll wedge adjusting device 3 after grinding, and the service life of the large-pressure roll is prolonged.
The first auxiliary clamping upper roller 21, the first auxiliary clamping lower roller 22, the second auxiliary clamping upper roller 23, the second auxiliary clamping lower roller 24, the third auxiliary clamping upper roller 25, the third auxiliary clamping lower roller 26, the fourth auxiliary clamping upper roller 27 and the fourth auxiliary clamping lower roller 28 are all segmented driven rollers with the diameter of 300mm, and small roller spacing is adopted to prevent belly bulging;
the four auxiliary clamping lower rolls are arranged on the auxiliary clamping lower roll buffer device 8, and the roll surfaces of the four auxiliary clamping lower rolls and the outer arc of the casting machine are positioned at the same roll surface elevation under the light pressing and auxiliary clamping working conditions, so that the implementation of the light pressing and auxiliary clamping working conditions is facilitated; when the working condition is under large reduction, the four auxiliary clamping lower rollers can float downwards passively through the auxiliary clamping lower roller buffer device 8, so that casting blanks can be prevented from bulging, self-protection can be formed, and the casting blanks are prevented from being crushed by excessive reduction force. The stress of the auxiliary clamping roller is converted into the tensile force of the whole casting housing through the supporting cross beam, the whole stress is reasonable, and the compensation of the deformation of the casting housing is easier to realize.
The schematic diagram of the top view section structure shown in fig. 3 is composed of four pairs of auxiliary clamping rollers and a pair of large pressing roller systems, solidification end large pressing operation is carried out through the middle large pressing roller, 8 auxiliary clamping rollers prevent continuous casting blanks with liquid cores from bulging, the surface quality of casting blanks is improved, the auxiliary clamping rollers are segmented driven rollers, and the segmented positions are arranged in a crossing mode, so that continuous casting blank indentation is prevented.
The schematic diagram of the working principle of the roll system shown in fig. 4 is that the roll system is in a working state when large reduction is implemented, the continuous casting billet is under the action of the large reduction driving roller to implement large reduction, the AGC hydraulic reduction device 2 provides large reduction force, the four auxiliary clamping upper rolls actively reduce the pressure to provide clamping force for preventing the continuous casting billet from bulging, the first two auxiliary clamping lower rolls are driven to provide clamping force for preventing the continuous casting billet from bulging and simultaneously perform self-protection, and the second two auxiliary clamping lower rolls have the elevation of roll surfaces flush with the large reduction rollers to provide clamping force for preventing the continuous casting billet from bulging. And in the initial period of transferring other continuous casting process states to the large-pressure continuous casting process state, the two latter auxiliary clamping lower rollers are passively and passively self-protected.
Claims (1)
1. The 2+8 roller combined thick plate blank large-reduction casting machine is characterized by comprising a casting machine housing (1), an AGC hydraulic reduction device (2), a lower roller inclined wedge adjusting device (3), an upper cross beam (4), a lower cross beam (5), an auxiliary clamping upper roller lifting hydraulic cylinder (6), an auxiliary clamping upper roller supporting cross beam (7), an auxiliary clamping lower roller buffer device (8), an auxiliary clamping lower roller supporting cross beam (9), a large-reduction upper roller system balancing device (10), a large-reduction upper roller system (11), a large-reduction lower roller system (12), a first auxiliary clamping upper roller (21), a first auxiliary clamping lower roller (22), a second auxiliary clamping upper roller (23), a second auxiliary clamping lower roller (24), a third auxiliary clamping upper roller (25), a third auxiliary clamping lower roller (26), a fourth auxiliary clamping upper roller (27) and a fourth auxiliary clamping lower roller (28); combining according to 2+8 rollers; the two casting mill housing (1) is provided with two limiting slide ways which are respectively arranged on the inner sides of the two housing and are in one-to-one correspondence with the upper roller and the lower roller of the auxiliary clamping; the casting mill housing (1) is connected with the lower cross beam (5) through the upper cross beam (4); the auxiliary clamping upper roller supporting cross beam (7) is positioned at the upper part of the casting mill housing (1); the bottom of the auxiliary clamping upper roller lifting hydraulic cylinder (6) is hoisted on an auxiliary clamping upper roller supporting beam (7), and the auxiliary clamping lower roller buffer device (8) is arranged on an auxiliary clamping lower roller supporting beam (9); two ends of the auxiliary clamping lower roller supporting cross beam (9) are connected with the lower part of the casting mill housing (1); the large-pressure upper roller system (11) and the large-pressure lower roller system (12) are positioned in the middle of the casting mill housing (1); the high-pressure lower roller system (12) is supported at the lower part of the casting mill housing (1) through a lower roller wedge adjusting device (3), the high-pressure upper roller system (11) is supported at the upper part of the casting mill housing (1) through an AGC hydraulic pressure pressing device (2), and a high-pressure upper roller system balancing device (10) is arranged between the high-pressure lower roller system (12) and the high-pressure upper roller system (11); the hydraulic pressing device is used for balancing the weight of the large-pressure upper roller system (11) and is matched with the AGC hydraulic pressing device (2) to realize the lifting of the large-pressure upper roller system (11); the first auxiliary clamping upper roller (21), the first auxiliary clamping lower roller (22), the second auxiliary clamping upper roller (23), the second auxiliary clamping lower roller (24), the third auxiliary clamping upper roller (25), the third auxiliary clamping lower roller (26), the fourth auxiliary clamping upper roller (27) and the fourth auxiliary clamping lower roller (28) are all positioned in a limit slideway at the inner side of the housing (1) of the casting mill; each of the four auxiliary clamping upper rollers is hinged with two auxiliary clamping upper roller lifting hydraulic cylinders (6); the four auxiliary clamping lower rollers are arranged on an auxiliary clamping lower roller buffer device (8); all auxiliary clamping rollers are independently adjusted up and down and independently act;
the 2+8 roller combination comprises a pair of integral heat-resistant pressure-resistant forging steel driving rollers consisting of a large-pressure-down upper roller system (11) and a large-pressure-down lower roller system (12), and four pairs of auxiliary clamping sectional driven rollers consisting of a first auxiliary clamping upper roller (21), a first auxiliary clamping lower roller (22), a second auxiliary clamping upper roller (23), a second auxiliary clamping lower roller (24), a third auxiliary clamping upper roller (25), a third auxiliary clamping lower roller (26), a fourth auxiliary clamping upper roller (27) and a fourth auxiliary clamping lower roller (28), wherein the 2+8 roller combination is a work execution roller system of the casting and rolling machine; the 2+8 rollers are provided with displacement sensors and pressure sensors;
the large-pressure upper roller system (11) and the large-pressure lower roller system (12) are hot die steel integral forging steel driving rollers, the diameter is 700-1200 mm, the surface overlaying thickness is 10-20 mm, and a single roller bears rolling force of more than 1000 t;
the first auxiliary clamping upper roller (21), the first auxiliary clamping lower roller (22), the second auxiliary clamping upper roller (23), the second auxiliary clamping lower roller (24), the third auxiliary clamping upper roller (25), the third auxiliary clamping lower roller (26), the fourth auxiliary clamping upper roller (27) and the fourth auxiliary clamping lower roller (28) are all segmented driven rollers, and the diameter is 200-400 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910448269.9A CN110181016B (en) | 2019-05-27 | 2019-05-27 | 2+8 roller combined thick plate blank large-pressure casting and rolling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910448269.9A CN110181016B (en) | 2019-05-27 | 2019-05-27 | 2+8 roller combined thick plate blank large-pressure casting and rolling machine |
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| CN110181016A CN110181016A (en) | 2019-08-30 |
| CN110181016B true CN110181016B (en) | 2024-03-29 |
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| CN112775193A (en) * | 2020-12-27 | 2021-05-11 | 无锡天德金属制品有限公司 | Development and application technology of pressure closed-loop roll gap control technology for aluminum alloy cast-rolled plate |
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| CN104416135A (en) * | 2013-08-30 | 2015-03-18 | 宝山钢铁股份有限公司 | Roll gap calibration method for lightly pressing down tension leveler in square billet continuous casting |
| CN104057049A (en) * | 2014-07-09 | 2014-09-24 | 北京科技大学 | Continuous casting machine sector section for deep pressing of continuous casting blank solidification tail end and deep pressing method of continuous casting machine sector section |
| CN104550802A (en) * | 2014-12-29 | 2015-04-29 | 中国第一重型机械股份公司 | Large-rolling reduction cast flow guide device of continuous casting machine |
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| JP2018114514A (en) * | 2017-01-17 | 2018-07-26 | 新日鐵住金株式会社 | Continuous casting method for steel |
| CN108067501A (en) * | 2017-11-07 | 2018-05-25 | 东北大学 | Suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature |
| CN109434053A (en) * | 2018-11-21 | 2019-03-08 | 中冶南方连铸技术工程有限责任公司 | The big pressure fan-shaped section of sheet billet continuous casting |
| CN109434056A (en) * | 2018-12-05 | 2019-03-08 | 东北大学 | A kind of double single-point weight soft reduction process of continuous casting billet solidifying end |
| CN210547961U (en) * | 2019-05-27 | 2020-05-19 | 北京首钢国际工程技术有限公司 | 2+8 roller combined thick plate blank large-reduction casting and rolling machine |
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