CN210547961U - 2+8 roller combined thick plate blank large-reduction casting and rolling machine - Google Patents
2+8 roller combined thick plate blank large-reduction casting and rolling machine Download PDFInfo
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- CN210547961U CN210547961U CN201920774341.2U CN201920774341U CN210547961U CN 210547961 U CN210547961 U CN 210547961U CN 201920774341 U CN201920774341 U CN 201920774341U CN 210547961 U CN210547961 U CN 210547961U
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Abstract
A2 +8 roller combined thick slab heavy-reduction casting and rolling machine belongs to the technical field of slab continuous casting production. The device comprises a casting and rolling mill housing, an AGC hydraulic pressing device, a high-pressing upper roller system balancing device, a high-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 casting and rolling machine housing is provided with two pieces, the inner sides of the two pieces are provided with limiting slideways which correspond to the auxiliary clamping upper and lower rollers one by one; a balance 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 upper clamping rollers is hinged with the two auxiliary upper clamping roller lifting hydraulic cylinders; four auxiliary clamping lower rolls are arranged on the auxiliary clamping lower roll buffer device. The device has the advantages that the device simultaneously considers the soft pressing and the auxiliary clamping functions required by thick plate blank production, and effectively prevents bulging.
Description
Technical Field
The utility model belongs to the technical field of slab continuous casting production, in particular to 2+8 roller combination formula thick slab heavy reduction casting and rolling machine. The method can better solve the defects of internal looseness and shrinkage cavity of the thick plate blank, comprehensively improve the density of the continuous casting blank and realize the stable production of the thick plate and the large-specification section bar under the condition of low rolling compression ratio.
Background
With the rapid development of the machine manufacturing industry, the demand for thick slabs at home and abroad is also increased in a leap-type manner. At present, the defects of core looseness and shrinkage cavity are eliminated by adopting a large compression ratio method in the steel rolling process in the production of medium and heavy plates, the thickness of rolled materials of the medium and heavy plates is limited, and the energy consumption is high.
The large reduction technology of the solidification tail end of the continuous casting billet is developed based on the light reduction technology of the solidification tail end. Practice proves that the dynamic soft reduction technology can effectively solve the problem of center segregation inside the continuous casting billet, but has little effect on the problems of internal loosening and shrinkage of the continuous casting billet. The large reduction technology for the solidification tail end of the continuous casting billet is a method for applying large reduction deformation to the casting billet when the central solid phase rate of the casting billet on a continuous casting production line reaches more than 80 percent so as to improve the core quality of the continuous casting billet, and researches find that the large reduction technology for the solidification tail end of the continuous casting billet has obvious defect effects on internal looseness and shrinkage cavity of the casting billet. The combination of the continuous casting blank solidification tail end high reduction technology and the solidification tail end light reduction technology can obviously improve the quality defects of center segregation, looseness and shrinkage cavity of the continuous casting blank, and can produce high-quality extra-thick blanks under the low compression ratio of 1.5-2.5.
The equipment for realizing the soft reduction technology of the solidification tail end of the continuous casting billet is mature in the industry, the equipment for realizing the large reduction technology of the solidification tail end of the continuous casting billet is actively researched and developed by various major metallurgical equipment companies in the world, and the current engineering application effect and the expected effect in a laboratory have a considerable gap. The disclosed equipment for the technology of the large reduction of the solidification tail end of the continuous casting billet comprises a sector section of a continuous casting machine under the large reduction of the solidification tail end of the continuous casting billet and a large reduction method thereof (application number 201410325414.1), a sector section under the heavy reduction for improving the defect of loosening and shrinkage of a slab and a using method thereof (application number 201410695742.0), a utility model of a sector section mechanism under the heavy reduction (application number 210420198534.5) and a sector section under the heavy reduction of the slab (application number 201520394978.0).
The patent is a re-inventing creation limited under the thought of a traditional fan-shaped section upper and lower frame structure, the single-roller reduction of a large reduction technology needs more than 10mm to permeate the core part of a thick plate blank, so that the defects of internal looseness and shrinkage cavity of the thick plate blank are overcome, the single-roller reduction force of the wide and thick plate blank with the width of more than 2000mm reaches more than 1000 tons, the traditional fan-shaped section upper and lower frame structure is difficult to bear the huge reduction force, the process thought of the patent is correct, but the formed new technical equipment is difficult to be put into real engineering application. In addition, in the production capacity of a thick slab continuous casting machine which is millions in one year, the proportion of steel types which need to implement the technology of solidification tail end high reduction is about 10%, so that the developed new equipment has to take account of other steel types with higher yield ratio, and the light reduction function and the auxiliary clamping function of the new equipment cannot be influenced. The existing technical equipment for solidification tail end high pressure cannot well give consideration to the functions of light pressure and auxiliary clamping.
Disclosure of Invention
An object of the utility model is to provide a 2+8 roller combination formula thick slab casting and rolling machine under big pressure has solved the problem that current equipment production caused the inside loose and shrinkage cavity defect of thick slab. The density of the continuous casting billet is improved, and the stable production of thick plates and large-specification sectional materials under the condition of low rolling compression ratio is realized.
A2 +8 roller combined thick plate blank high-reduction casting and rolling machine comprises a casting and rolling machine housing 1, an AGC hydraulic pressing device 2, a lower roller 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 buffering device 8, an auxiliary clamping lower roller supporting cross beam 9, a high-reduction upper roller system balancing device 10, a high-reduction upper roller system 11, a high-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; the combination of 2+8 rollers is adopted. The casting and rolling machine housing 1 is provided with two pieces, the inner sides of the two pieces are respectively provided with a limiting slideway, and the two pieces are in one-to-one correspondence with the auxiliary clamping upper and lower rollers; the casting and rolling machine housing 1 is connected with a lower beam 5 through an upper beam 4; the auxiliary clamping upper roll supporting beam 7 is positioned at the upper part of the casting and rolling machine housing 1; the bottom of the auxiliary clamping upper roll lifting hydraulic cylinder 6 is hung on an auxiliary clamping upper roll supporting beam 7, and the auxiliary clamping lower roll buffer device 8 is arranged on an auxiliary clamping lower roll supporting beam 9; two ends of the auxiliary clamping lower roller supporting beam 9 are connected with the lower part of the casting and rolling machine housing 1; the upper roller system 11 under the large reduction and the lower roller system 12 under the large reduction are positioned in the middle of the casting and rolling mill housing 1; wherein, the large-reduction lower roller system 12 is supported at the lower part of the casting and rolling mill housing 1 through the lower roller wedge adjusting device 3, the large-reduction upper roller system 11 is supported at the upper part of the casting and rolling mill housing 1 through the AGC hydraulic pressing device 2, and a large-reduction upper roller system balancing device 10 is arranged between the large-reduction lower roller system 12 and the large-reduction upper roller system 11; the device is used for balancing the weight of the upper roller system 11 under the large pressure and is matched with the AGC hydraulic screwdown gear 2 to realize the lifting of the upper roller system 11 under the large pressure; the first auxiliary upper clamping roller 21, the first auxiliary lower clamping roller 22, the second auxiliary upper clamping roller 23, the second auxiliary lower clamping roller 24, the third auxiliary upper clamping roller 25, the third auxiliary lower clamping roller 26, the fourth auxiliary upper clamping roller 27 and the fourth auxiliary lower clamping roller 28 are all positioned in a limiting slide way on the inner side of the casting and rolling mill housing 1; each of the four auxiliary upper clamping rollers is hinged with two auxiliary upper clamping roller lifting hydraulic cylinders 6; four auxiliary clamping lower rolls are arranged on the auxiliary clamping lower roll buffer device 8. The independent adjustment and independent action of all the 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 forged steel driving rollers consisting of an upper large-reduction roller system 11 and a lower large-reduction 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-reduction upper roller system 11 and the large-reduction lower roller system 12 are hot-work die steel integral forged steel driving rollers, the diameter is 700-1200 mm, the surface surfacing thickness is 10-20 mm, and a single roller bears the rolling force of more than 1000 t;
the first auxiliary upper clamping roller 21, the first auxiliary lower clamping roller 22, the second auxiliary upper clamping roller 23, the second auxiliary lower clamping roller 24, the third auxiliary upper clamping roller 25, the third auxiliary lower clamping roller 26, the fourth auxiliary upper clamping roller 27 and the fourth auxiliary lower clamping roller 28 are all segmented driven rollers, the diameter is 200-400 mm, and bulging is prevented by adopting a small roller spacing;
the four auxiliary clamping lower rolls are arranged on the auxiliary clamping lower roll buffer device 8, and under the working conditions of soft reduction and auxiliary clamping, the roll surfaces of the four auxiliary clamping lower rolls and the outer arc of the casting machine are at the same roll surface elevation, so that the implementation of the working conditions of soft reduction and auxiliary clamping is facilitated; under the big operating mode, four supplementary centre gripping lower rolls can be floated down through supplementary centre gripping lower roll buffer 8 quilt, can prevent the casting blank drum tripe, can form the self-protection again, prevent by too big pushing down force conquassation. The stress of the auxiliary clamping roller is converted into the pulling force of the whole casting housing through the supporting beam, the whole stress is reasonable, and the compensation of the deformation of the casting and rolling machine housing is easier to realize.
The utility model has the advantages that: the advantages of high bearing capacity of the slab housing rolling mill and high-precision control of the AGC hydraulic screwdown device are combined. The urgent requirement of engineering application of a 'continuous casting billet solidification tail end large reduction technology' is met, and the light reduction and auxiliary clamping functions required by thick slab production are considered.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention. The device comprises a casting and rolling mill housing 1, an AGC hydraulic pressing device 2, a lower roll wedge adjusting device 3, an upper cross beam 4, a lower cross beam 5, a large pressing upper roll system balancing device 10, a large pressing upper roll system 11, a large pressing 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.
Fig. 2 is a schematic side view of the present invention. The device comprises a casting and rolling mill housing 1, an auxiliary clamping upper roll lifting hydraulic cylinder 6, an auxiliary clamping upper roll supporting cross beam 7, an auxiliary clamping lower roll buffering device 8, an auxiliary clamping lower roll supporting cross beam 9, a first auxiliary clamping upper roll 21 and a first auxiliary clamping lower roll 22.
Fig. 3 is a schematic top view of the cross-sectional structure of the present invention. The casting and rolling mill housing comprises a casting and rolling mill housing 1, 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.
Fig. 4 is a schematic view of the working principle of the roller system of the present invention. The device comprises a casting and rolling mill housing 1, an AGC hydraulic pressing device 2, a lower roll wedge adjusting device 3, a large-pressing upper roll system 11, a large-pressing 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.
Detailed Description
The embodiments of the casting and rolling machine will be described with reference to the accompanying drawings:
example 1
A2 +8 roller combined thick plate blank high-reduction casting and rolling machine comprises a casting and rolling machine housing 1, an AGC hydraulic pressing device 2, a lower roller 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 buffering device 8, an auxiliary clamping lower roller supporting cross beam 9, a high-reduction upper roller system balancing device 10, a high-reduction upper roller system 11, a high-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; the combination of 2+8 rollers is adopted. The casting and rolling machine housing 1 is provided with two pieces, the inner sides of the two pieces are respectively provided with a limiting slideway, and the two pieces are in one-to-one correspondence with the auxiliary clamping upper and lower rollers; the casting and rolling machine housing 1 is connected with a lower beam 5 through an upper beam 4; the auxiliary clamping upper roll supporting beam 7 is positioned at the upper part of the casting and rolling machine housing 1; the bottom of the auxiliary clamping upper roll lifting hydraulic cylinder 6 is hung on an auxiliary clamping upper roll supporting beam 7, and the auxiliary clamping lower roll buffer device 8 is arranged on an auxiliary clamping lower roll supporting beam 9; two ends of the auxiliary clamping lower roller supporting beam 9 are connected with the lower part of the casting and rolling machine housing 1; the upper roller system 11 under the large reduction and the lower roller system 12 under the large reduction are positioned in the middle of the casting and rolling mill housing 1; wherein, the large-reduction lower roller system 12 is supported at the lower part of the casting and rolling mill housing 1 through the lower roller wedge adjusting device 3, the large-reduction upper roller system 11 is supported at the upper part of the casting and rolling mill housing 1 through the AGC hydraulic pressing device 2, and a large-reduction upper roller system balancing device 10 is arranged between the large-reduction lower roller system 12 and the large-reduction upper roller system 11; the device is used for balancing the weight of the upper roller system 11 under the large pressure and is matched with the AGC hydraulic screwdown gear 2 to realize the lifting of the upper roller system 11 under the large pressure; the first auxiliary upper clamping roller 21, the first auxiliary lower clamping roller 22, the second auxiliary upper clamping roller 23, the second auxiliary lower clamping roller 24, the third auxiliary upper clamping roller 25, the third auxiliary lower clamping roller 26, the fourth auxiliary upper clamping roller 27 and the fourth auxiliary lower clamping roller 28 are all positioned in a limiting slide way on the inner side of the casting and rolling mill housing 1; each of the four auxiliary upper clamping rollers is hinged with two auxiliary upper clamping roller lifting hydraulic cylinders 6; four auxiliary clamping lower rolls are arranged on the auxiliary clamping lower roll buffer device 8. The independent adjustment and independent action of all the 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 forged steel driving rollers consisting of an upper large-reduction roller system 11 and a lower large-reduction 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-reduction upper roller system 11 and the large-reduction lower roller system 12 are hot die steel integral forged steel driving rollers, the diameter of the rollers is 820mm, the surface surfacing thickness of the rollers is 20mm, and a single roller bears the rolling force of 1500 t. The aim of heat resistance and high pressure resistance is achieved, 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 lower roll is prolonged.
The first auxiliary upper clamping roller 21, the first auxiliary lower clamping roller 22, the second auxiliary upper clamping roller 23, the second auxiliary lower clamping roller 24, the third auxiliary upper clamping roller 25, the third auxiliary lower clamping roller 26, the fourth auxiliary upper clamping roller 27 and the fourth auxiliary lower clamping roller 28 are all segmented driven rollers, the diameter is 300mm, and bulging is prevented by adopting a small roller interval;
the four auxiliary clamping lower rolls are arranged on the auxiliary clamping lower roll buffer device 8, and under the working conditions of soft reduction and auxiliary clamping, the roll surfaces of the four auxiliary clamping lower rolls and the outer arc of the casting machine are at the same roll surface elevation, so that the implementation of the working conditions of soft reduction and auxiliary clamping is facilitated; under the big operating mode, four supplementary centre gripping lower rolls can be floated down through supplementary centre gripping lower roll buffer 8 quilt, can prevent the casting blank drum tripe, can form the self-protection again, prevent by too big pushing down force conquassation. The stress of the auxiliary clamping roller is converted into the pulling force of the whole casting housing through the supporting beam, the whole stress is reasonable, and the compensation of the deformation of the casting and rolling machine housing is easier to realize.
The overlooking section structure schematic diagram shown in figure 3 is composed of four pairs of auxiliary clamping rollers and a pair of large reduction roller systems, the middle large reduction roller system is used for implementing solidification tail end large reduction operation, 8 auxiliary clamping rollers are used for preventing continuous casting billets with liquid cores from bulging, the surface quality of the casting billets is improved, the auxiliary clamping rollers are segmented driven rollers, and the segments are arranged in a crossed manner to prevent continuous casting billet indentations.
The roller that the theory of operation schematic diagram shown in fig. 4 is when implementing the heavy reduction is the operating condition of roller system, the continuous casting billet is implemented under the effect of heavy reduction drive roller and is pressed down, provide the heavy reduction power by AGC hydraulic pressure screw-down device 2, four supplementary centre gripping are gone up the roller initiative and are pressed down, provide the clamping-force that prevents the continuous casting billet and drum the tripe, preceding two supplementary centre gripping lower rolls are passive follow-up, carry out the self-protection when providing the clamping-force that prevents the continuous casting billet and drum the tripe, two supplementary centre gripping lower rolls of back roll surface elevation flushes with the heavy reduction lower roll, provide the clamping-force that prevents. And in the initial period when other continuous casting process states are switched to the continuous casting process state under the large pressure, the two later auxiliary clamping lower rolls passively follow up to perform self-protection.
Claims (4)
1. A2 +8 roller combined thick plate blank large-reduction casting-rolling machine is characterized in that, the automatic rolling device comprises a casting and rolling mill housing (1), an AGC (automatic gain control) hydraulic pressing 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 buffering 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); combining according to 2+8 rollers; the casting and rolling machine housing (1) is provided with two pieces, the inner sides of the two pieces are respectively provided with a limiting slideway, and the limiting slideways correspond to the auxiliary clamping upper and lower rollers one by one; the casting and rolling machine housing (1) is connected with a lower beam (5) through an upper beam (4); the auxiliary clamping upper roll supporting beam (7) is positioned at the upper part of the casting and rolling machine housing (1); the bottom of the auxiliary clamping upper roll lifting hydraulic cylinder (6) is hung on an auxiliary clamping upper roll supporting beam (7), and the auxiliary clamping lower roll buffer device (8) is arranged on an auxiliary clamping lower roll supporting beam (9); two ends of the auxiliary clamping lower roller supporting beam (9) are connected with the lower part of the casting and rolling machine housing (1); the upper roller system (11) under large reduction and the lower roller system (12) under large reduction are positioned in the middle of the casting and rolling mill housing (1); wherein the large-reduction lower roll system (12) is supported at the lower part of the casting and rolling 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 and rolling mill housing (1) through the AGC hydraulic pressing 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 first auxiliary upper clamping roller (21), the first auxiliary lower clamping roller (22), the second auxiliary upper clamping roller (23), the second auxiliary lower clamping roller (24), the third auxiliary upper clamping roller (25), the third auxiliary lower clamping roller (26), the fourth auxiliary upper clamping roller (27) and the fourth auxiliary lower clamping roller (28) are all positioned in a limiting slide way on the inner side of the casting and rolling mill housing (1); 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 an auxiliary clamping lower roller buffer device (8).
2. The casting and rolling machine according to claim 1, characterized in that the 2+8 roller combination comprises a pair of integrated heat-resistant and pressure-resistant forged steel driving rollers consisting of an upper large-reduction roller system (11) and a lower large-reduction 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 roller system for performing the operation of the casting and rolling machine; the 2+8 rollers are provided with displacement sensors and pressure sensors.
3. The casting and rolling machine according to claim 1, characterized in that the high reduction upper roll system (11) and the high reduction lower roll system (12) are hot die steel integral forged steel driving rolls, the diameter of the rolls is 700-1200 mm, the surface surfacing thickness of the rolls is 10-20 mm, and a single roll bears the rolling force of more than 1000 t.
4. The casting and rolling machine according to claim 1, characterized in that the first upper auxiliary clamping roller (21), the first lower auxiliary clamping roller (22), the second upper auxiliary clamping roller (23), the second lower auxiliary clamping roller (24), the third upper auxiliary clamping roller (25), the third lower auxiliary clamping roller (26), the fourth upper auxiliary clamping roller (27) and the fourth lower auxiliary clamping roller (28) are all segmented driven rollers with diameters of 200-400 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774341.2U CN210547961U (en) | 2019-05-27 | 2019-05-27 | 2+8 roller combined thick plate blank large-reduction casting and rolling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774341.2U CN210547961U (en) | 2019-05-27 | 2019-05-27 | 2+8 roller combined thick plate blank large-reduction casting and rolling machine |
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| CN210547961U true CN210547961U (en) | 2020-05-19 |
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| CN201920774341.2U Active CN210547961U (en) | 2019-05-27 | 2019-05-27 | 2+8 roller combined thick plate blank large-reduction casting and rolling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181016A (en) * | 2019-05-27 | 2019-08-30 | 北京首钢国际工程技术有限公司 | A kind of big pressure casting and rolling machine of the box-like heavy slab of 2+8 roller group |
-
2019
- 2019-05-27 CN CN201920774341.2U patent/CN210547961U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181016A (en) * | 2019-05-27 | 2019-08-30 | 北京首钢国际工程技术有限公司 | A kind of big pressure casting and rolling machine of the box-like heavy slab of 2+8 roller group |
| CN110181016B (en) * | 2019-05-27 | 2024-03-29 | 北京首钢国际工程技术有限公司 | 2+8 roller combined thick plate blank large-pressure casting and rolling machine |
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