CN107520417B - Sectional roller device for continuous casting of square billets - Google Patents
Sectional roller device for continuous casting of square billets Download PDFInfo
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- CN107520417B CN107520417B CN201610975150.3A CN201610975150A CN107520417B CN 107520417 B CN107520417 B CN 107520417B CN 201610975150 A CN201610975150 A CN 201610975150A CN 107520417 B CN107520417 B CN 107520417B
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- 239000010687 lubricating oil Substances 0.000 claims abstract description 9
- 210000004907 gland Anatomy 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 24
- 239000010410 layer Substances 0.000 claims description 22
- 239000012535 impurity Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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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
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
A sectional roller device for continuous casting of square billets is mainly used for an upper sectional roller and a lower sectional roller of a first section of a continuous casting fan-shaped section. The left and right end shaft heads of the first upper sectional roller positioning mandrel are matched and positioned with the arc of the upper positioning seat respectively, and the upper positioning seat and the gland tightly press the two end shaft heads of the first positioning mandrel; the left end shaft head and the right end shaft head of the second lower sectional roll positioning mandrel are respectively matched and positioned with the circular arc of the lower positioning seat, and the left end shaft head and the right end shaft head of the second positioning mandrel are respectively limited by a clamping plate, a second bolt and a second spring washer to axially move and radially rotate; the left side and the right side of the upper positioning mandrel and the right side of the lower positioning mandrel are respectively connected with the roller sleeve through elastic bearings; the positioning core shaft is internally provided with lubricating oil and a cooling water channel. The invention is internally provided with the cooling water path and the lubricating oil path, is convenient and rapid to install, has strong high temperature resistance, fatigue resistance and wear resistance of the sectional roller, and can reduce the maintenance time.
Description
Technical Field
The invention relates to the technical field of precision machining, in particular to a sectional roller device for continuous casting of square billets.
Background
Continuous casting equipment is one of important process equipment in the steel industry, and the strengthening and toughening and long service life of the equipment are very important. The continuous casting equipment comprises pouring equipment such as an intermediate ladle and a submerged nozzle, a crystallizer, a supporting roller way of an unconsolidated casting blank, casting blank cutting equipment and the like, wherein the supporting roller way comprises units of a segmented roller way consisting of a plurality of rollers, and the supporting roller way is maintained according to the units.
According to the statistics of the fault downtime classified by equipment for many years, the fault downtime ratio of the bearings and the rollers of the segmented roller way is about 50%, so that the improvement of the toughness and the reliability of the segmented roller way is of great importance. In addition, the subsection roller way is composed of components such as a roller, a bearing, a base plate and the like, the service life of the bearing and the cracking of the roller are the primary factors causing the shutdown of equipment, and therefore the long service life and the short service life of the bearing are the key points for determining the maintenance rate of the equipment.
However, the bearings of the segmented roller ways of the continuous casting equipment generally adopt self-aligning roller bearings, the main roller is a solid roller, no cooling water path is arranged in the roller, the field temperature is high, the temperature difference between the inside and the outside is large, and more impurities such as iron powder oxide skin and the like exist, so that the phenomena of bearing blocking, sintering, non-running of the segmented roller and the like can be caused, and the surface quality of the continuous casting billet is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the sectional roller device for the continuous casting of the square billet so as to improve the yield of the square billet.
In order to realize the purpose, shaft heads at the left and right ends of a positioning mandrel I of the upper sectional roller are respectively matched and positioned with pressing covers at the left and right ends and arcs of upper positioning seats, and the upper positioning seats at the left and right ends and the shaft heads at the two ends of the pressing and positioning mandrel I are tightly pressed by a bolt I, a nut and a spring washer I; the left side and the right side of the first positioning mandrel are respectively connected with the roller sleeve through elastic bearings; lubricating oil enters from a left end face oil inlet hole I of the first positioning mandrel, is cooled, lubricated and taken away impurities through the elastic bearing, is sprayed out from an outer retainer ring end face oil outlet hole I of the elastic bearing on the left side, enters from a right end face oil inlet hole II of the first positioning mandrel, is cooled, lubricated and taken away impurities through the elastic bearing on the right side, and is sprayed out from an outer retainer ring end face oil outlet hole II of the elastic bearing on the right side; cooling water enters the roller sleeve from the water inlet hole on the left end face and circulates, and then flows out from the water outlet hole on the right end face to take away heat in the roller sleeve;
the left and right end shaft heads of the positioning mandrel II of the lower sectional roller are respectively matched and positioned with the arcs of the lower positioning seats at the left and right ends, and the left and right shaft ends of the positioning mandrel II respectively limit the axial movement and radial rotation of the positioning mandrel II by using a clamping plate, a bolt II and a spring washer II; the left side and the right side of the positioning mandrel II are respectively connected with the roller sleeve through elastic bearings; lubricating oil enters from a first oil inlet hole in the left end face of the positioning mandrel II, is cooled, lubricated and takes away impurities through the elastic bearing, is sprayed out from a first oil outlet hole in the end face of the outer retainer ring of the elastic bearing on the left side, enters from a second oil inlet hole in the right end face of the positioning mandrel II, is cooled, lubricated and takes away impurities through the elastic bearing on the right side, and is sprayed out from a second oil outlet hole in the end face of the outer retainer ring of the elastic bearing on the right side; cooling water enters the roller sleeve from the water inlet hole on the left end face and circulates, and then flows out from the water outlet hole on the right end face to take away heat in the roller sleeve;
the middle parts of the upper positioning seat and the lower positioning seat are positioned through a key I, and the upper positioning seat is connected with the lower positioning seat through a bolt; the lower positioning seat and the base frame of the fan-shaped section are positioned and fixed together by a third bolt and a second key;
and a high-temperature square billet is arranged between the roller sleeve of the upper sectional roller and the roller sleeve of the lower sectional roller.
The positioning mandrel I is in interference fit with an inner ring of the elastic bearing, an outer ring of the elastic bearing is in interference fit with the roller sleeve, a needle roller retainer for bearing radial load is arranged in the elastic bearing, and a first check ring and a second check ring for limiting the axial movement of the needle roller retainer are arranged on two sides of the elastic bearing; one end of the second check ring is provided with a seal ring for preventing cooling water from entering the inner cavity of the elastic bearing, and a first check ring for holes and a third check ring for protecting the seal ring are sequentially arranged between the second check ring and the seal ring; an outer retainer ring used for preventing external impurities from entering the elastic bearing is arranged on one side of the first retainer ring, a hole retainer ring II is arranged between the outer retainer ring and the first retainer ring, the outer retainer ring is axially fixed through a shaft retainer ring, a plurality of sealing pieces are arranged in the outer retainer ring, and the outer circles of the sealing pieces are in interference fit with the roller sleeve;
the positioning mandrel II is in interference fit with an inner ring of the elastic bearing, an outer ring of the elastic bearing is in interference fit with the roller sleeve, a needle roller retainer for bearing radial load is arranged in the elastic bearing, and a first check ring and a second check ring for limiting the axial movement of the needle roller retainer are arranged on two sides of the elastic bearing; one end of the second check ring is provided with a seal ring for preventing cooling water from entering the inner cavity of the elastic bearing, and a first check ring for holes and a third check ring for protecting the seal ring are sequentially arranged between the second check ring and the seal ring; one side of the first check ring is provided with an outer check ring used for preventing external impurities from entering the interior of the elastic bearing, a hole check ring II is arranged between the outer check ring and the first check ring, the outer check ring is axially fixed through a shaft check ring, a plurality of sealing pieces are arranged in the outer check ring, and the outer circles of the sealing pieces are in interference fit with the roller sleeve.
The outer circle surface of the roller sleeve is formed by adopting high-temperature-resistant and corrosion-resistant stainless alloy steel for automatic submerged arc surfacing, the surfacing layer comprises three layers, the bottom layer is a transition layer, the middle layer is a working layer, and the surface layer is a hardening layer; preheating is needed before welding, secondary hardening and stress removing treatment are needed after welding, the material is heated to a certain temperature and is kept warm for a period of time, so that the residual stress in the material is relaxed, and overlaying alloy elements are fully fused after secondary hardening, so that the hardness of the roller sleeve is uniform, and the use requirement is met.
The first positioning mandrel and the second positioning mandrel are subjected to quenching and tempering and surface quenching; the upper positioning seat, the lower positioning seat and the gland are subjected to oxidation treatment.
Compared with the prior art, the invention is internally provided with the cooling water path and the lubricating oil path, is convenient and rapid to install, has strong high temperature resistance, fatigue resistance and wear resistance of the sectional roller, can reduce the maintenance time, prolong the service life of the sectional roller, reduce the labor intensity of operators and reduce the production cost.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic view of the structure of the elastic bearing of fig. 1.
FIG. 4 is a schematic view of a billet continuous casting line.
Detailed Description
As shown in fig. 1, 2 and 3, the invention is mainly used for the upper and lower sectional rolls of the first segment of the continuous casting segment. The shaft heads at the left and right ends of a positioning mandrel I7 of the upper sectional roller are respectively matched and positioned with the glands 11 at the left and right ends and the circular arcs R1 of the upper positioning seats 15, and the shaft heads at the two ends of the positioning mandrel I7 are tightly pressed by the upper positioning seats 15 at the left and right ends and the glands 11 through a bolt I12, a nut 13 and a spring washer I14; the left side and the right side of the positioning mandrel I7 are respectively connected with the roller sleeve 6 through elastic bearings 5; lubricating oil with certain pressure enters from a first oil inlet hole 27 on the left end face of the first positioning mandrel 7, is cooled, lubricated and takes away impurities through the elastic bearing 5, is sprayed out from a first oil outlet hole 28 on the end face of the outer retainer ring 2 of the elastic bearing 5 on the left side, enters from a second oil inlet hole 29 on the right end face of the first positioning mandrel 7, passes through the elastic bearing 5 on the right side, is cooled, lubricated and takes away impurities, and is sprayed out from a second oil outlet hole 30 on the end face of the outer retainer ring 2 of the elastic bearing 5 on the right side; after cooling water enters the roller sleeve 6 from the left end face water inlet hole 31 and circulates, the cooling water flows out from the right end face water outlet hole 32 and takes away heat inside the roller sleeve 6, and therefore the cooling purpose is achieved. The positioning mandrel I7 is in interference fit with an inner ring 23 of the elastic bearing 5, an outer ring 22 of the elastic bearing 5 is in interference fit with the roller sleeve 6, a special needle roller retainer 24 is arranged in the elastic bearing 5 and used for bearing the radial load of the elastic bearing 5, and a first check ring 21 and a second check ring 25 are arranged on two sides of the elastic bearing 5 and used for limiting the axial movement of the needle roller retainer 24; one end of the second check ring 25 is provided with a seal ring 10 for preventing cooling water from entering the inner cavity of the elastic bearing 5, and a first check ring 8 for holes and a third check ring 9 for protecting the seal ring 10 are sequentially arranged between the second check ring 25 and the seal ring 10; one side of the first retainer ring 21 is provided with an outer retainer ring 2 used for preventing external impurities from entering the elastic bearing 5, a hole retainer ring two 4 is arranged between the outer retainer ring 2 and the first retainer ring 21, the outer retainer ring 2 is axially fixed through the shaft retainer ring 1, a plurality of sealing sheets 3 are arranged in the outer retainer ring 2, the outer circles of the sealing sheets 3 are in interference fit with the roller sleeve 6, an inner hole is in clearance fit with the outer retainer ring 2, the sealing sheets 3 can prevent external iron powder, oxide skin and the like from entering the elastic bearing 5, the sealing sheets 3 can achieve a dustproof effect through labyrinth sealing, meanwhile, the inner ring and the outer ring of the elastic bearing 5 are made of square alloy spring steel, and the device can be compared with a worm wheel and a worm conveying device in operation, so that foreign objects entering the elastic bearing 5 can be transferred to the outside, the device is durable, and the influence on weak acid formed by dirt, scrap iron powder, water and falling iron powder and water is not large.
The lower sectional roller and the upper sectional roller have the same structure, but the second positioning mandrel 26 is lengthened, shaft heads at the left and right ends of the second positioning mandrel 26 of the lower sectional roller are respectively matched and positioned with the circular arcs R1 of the lower positioning seats 16 at the left and right ends, and the left and right shaft ends of the second positioning mandrel 26 are respectively limited by the clamping plate 19, the second bolt 17 and the second spring washer 18 to axially move and radially rotate the second positioning mandrel 26; the left side and the right side of the second positioning mandrel 26 are respectively connected with the roller sleeve 6 through an elastic bearing 5; lubricating oil with certain pressure enters from a first oil inlet hole 27 on the left end face of the second positioning mandrel 26, passes through the elastic bearing 5, is cooled, lubricated and takes away impurities, is sprayed out from a first oil outlet hole 28 on the end face of the outer retainer ring 2 of the elastic bearing 5 on the left side, enters from a second oil inlet hole 29 on the right end face of the second positioning mandrel 26, passes through the elastic bearing 5 on the right side, is cooled, lubricated and takes away impurities, and is sprayed out from a second oil outlet hole 30 on the end face of the outer retainer ring 2 of the elastic bearing 5 on the right side; after cooling water enters the roller sleeve 6 from the left end face water inlet hole 31 and circulates, the cooling water flows out from the right end face water outlet hole 32 and takes away heat inside the roller sleeve 6, and therefore the cooling purpose is achieved. The second positioning mandrel 26 is in interference fit with the inner ring 23 of the elastic bearing 5, the outer ring 22 of the elastic bearing 5 is in interference fit with the roller sleeve 6, a special needle roller retainer 24 is arranged in the elastic bearing 5 and used for bearing the radial load of the elastic bearing 5, and a first check ring 21 and a second check ring 25 are arranged on two sides of the elastic bearing 5 and used for limiting the axial movement of the needle roller retainer 24; one end of the second check ring 25 is provided with a seal ring 10 for preventing cooling water from entering the inner cavity of the elastic bearing 5, and a first check ring 8 for holes and a third check ring 9 for protecting the seal ring 10 are sequentially arranged between the second check ring 25 and the seal ring 10; one side of the first retainer ring 21 is provided with an outer retainer ring 2 used for preventing external impurities from entering the elastic bearing 5, a hole retainer ring two 4 is arranged between the outer retainer ring 2 and the first retainer ring 21, the outer retainer ring 2 is axially fixed through the shaft retainer ring 1, a plurality of sealing sheets 3 are arranged in the outer retainer ring 2, the outer circles of the sealing sheets 3 are in interference fit with the roller sleeve 6, an inner hole is in clearance fit with the outer retainer ring 2, the sealing sheets 3 can prevent external iron powder, oxide skin and the like from entering the elastic bearing 5, the sealing sheets 3 can achieve a dustproof effect through labyrinth sealing, meanwhile, the inner ring and the outer ring of the elastic bearing 5 are made of square alloy spring steel, and the device can be compared with a worm wheel and a worm conveying device in operation, so that foreign objects entering the elastic bearing 5 can be transferred to the outside, the device is durable, and the influence on weak acid formed by dirt, scrap iron powder, water and falling iron powder and water is not large.
The middle parts of the upper positioning seat 15 and the lower positioning seat 16 are positioned through a first key 20, and the upper positioning seat 15 is connected with the lower positioning seat 16 through a bolt; the lower positioning seat 16 and the fan-shaped section base frame 33 are fixedly positioned together by a third bolt 39 and a second key 40;
and a high-temperature square billet is arranged between the roller sleeve 6 of the upper sectional roller and the roller sleeve 6 of the lower sectional roller.
All the excircle surfaces of the roller sleeve 6 are formed by adopting high-temperature-resistant and corrosion-resistant stainless alloy steel automatic submerged arc surfacing, and the surfacing layer comprises three layers: the bottom layer is a transition layer; in order to ensure good metallurgical bonding between the base metal and the surfacing metal, before surfacing of the working layer material, a low-carbon welding wire material with higher compressive strength is used for surfacing of the transition layer; the surface layer is a hardened layer, so that the hardness, the wear resistance and the cold-heat exchange change cycle resistance of the roll surface can be improved, and the surface of the roll surface can have stronger heat resistance, wear resistance and crack resistance under the working conditions of over-red steel and water cooling in the use process. To avoid the appearance of hardened structures in the heat affected zone and cracking of the weld overlay, preheating is necessary prior to welding. It can reduce the temperature gradient of the heat affected zone, thereby reducing the stress caused by temperature, reducing the cooling speed and the hardening tendency, and the proper preheating temperature is also an important measure for making the hardness of the overlaying layer uniform. The residual stress after welding is very large, secondary hardening and stress relief treatment are required, the material is heated to a certain temperature and is kept for a period of time, so that the residual stress in the material is relaxed, and after secondary hardening, surfacing alloy elements are fully fused, so that the hardness of the roller sleeve 6 is uniform, and the use requirement is met.
The first positioning core shaft 7 and the second positioning core shaft 26 are subjected to quenching and tempering and surface quenching, so that the comprehensive mechanical property can be improved, the wear resistance of the bearing position can be improved, and the bearing position can be repeatedly used and detached for multiple times. The upper positioning seat 15, the lower positioning seat 16 and the gland 11 adopt oxidation treatment, so that the rust can be prevented.
As shown in FIG. 4, the sectional roll device 37 for continuous casting of a billet is installed on a base frame 33 of a sector section, a ladle 34 with molten steel flows into an intermediate tank 35 through filtration, then the molten steel enters a crystallizer 36 through filtration, the molten steel enters a sector section straightening section 38 through magnetic stirring and vibration, and the straightened billet has a flat and smooth surface and is free of center segregation and center shrinkage porosity, so that the yield, the production efficiency and the labor intensity can be improved, and the cost is reduced.
Claims (4)
1. The utility model provides a billet continuous casting is with dividing festival roller device which characterized in that:
the left and right end shaft heads of a positioning mandrel I (7) of the upper sectional roller are respectively matched and positioned with the glands (11) at the left and right ends and the circular arcs (R1) of the upper positioning seats (15), and the upper positioning seats (15) at the left and right ends and the glands (11) tightly press the two end shaft heads of the positioning mandrel I (7) through a bolt I (12), a nut (13) and a spring washer I (14); the left side and the right side of the positioning mandrel I (7) are respectively connected with the roller sleeve (6) through elastic bearings (5); lubricating oil enters from a first oil inlet hole (27) on the left end face of a first positioning mandrel (7), is cooled, lubricated and takes away impurities through an elastic bearing (5), is sprayed out from a first oil outlet hole (28) on the end face of an outer retaining ring (2) of the elastic bearing (5) on the left side, enters from a second oil inlet hole (29) on the right end face of the first positioning mandrel (7), is cooled, lubricated and takes away impurities through the elastic bearing (5) on the right side, and is sprayed out from a second oil outlet hole (30) on the end face of the outer retaining ring (2) of the elastic bearing (5) on the right side; cooling water enters the roller sleeve (6) from the water inlet hole (31) on the left end face and circulates in the roller sleeve, and then flows out from the water outlet hole (32) on the right end face to take away heat in the roller sleeve (6);
the shaft heads at the left and right ends of a second positioning mandrel (26) of the lower sectional roller are respectively matched and positioned with the arcs (R1) of the lower positioning seats (16) at the left and right ends, and the axial movement and radial rotation of the second positioning mandrel (26) are limited by the clamping plate (19), the second bolt (17) and the second spring washer (18) at the left and right shaft ends of the second positioning mandrel (26); the left side and the right side of the second positioning mandrel (26) are respectively connected with the roller sleeve (6) through an elastic bearing (5); lubricating oil enters from a first oil inlet hole (27) in the left end face of the second positioning mandrel (26), is cooled, lubricated and takes away impurities through the elastic bearing (5), is sprayed out from a first oil outlet hole (28) in the end face of the outer retainer ring (2) of the elastic bearing (5) on the left side, enters from a second oil inlet hole (29) in the right end face of the second positioning mandrel (26), is cooled, lubricated and takes away impurities through the elastic bearing (5) on the right side, and is sprayed out from a second oil outlet hole (30) in the end face of the outer retainer ring (2) of the elastic bearing (5) on the right side; cooling water enters the roller sleeve (6) from the water inlet hole (31) on the left end face and circulates in the roller sleeve, and then flows out from the water outlet hole (32) on the right end face to take away heat in the roller sleeve (6);
the middle parts of the upper positioning seat (15) and the lower positioning seat (16) are positioned through a key I (20), and the upper positioning seat (15) is connected with the lower positioning seat (16) through a bolt; the lower positioning seat (16) and the fan-shaped section base frame (33) are positioned and fixed together by a third bolt (39) and a second key (40);
and a high-temperature square billet is arranged between the roller sleeve (6) of the upper sectional roller and the roller sleeve (6) of the lower sectional roller.
2. The segment roll device for continuous billet casting according to claim 1, wherein:
the positioning mandrel I (7) is in interference fit with an inner ring (23) of the elastic bearing (5), an outer ring (22) of the elastic bearing (5) is in interference fit with the roller sleeve (6), a needle roller cage (24) for bearing radial load is arranged in the elastic bearing (5), and a first check ring (21) and a second check ring (25) for limiting the axial movement of the needle roller cage (24) are arranged on two sides of the elastic bearing (5); one end of the second check ring (25) is provided with a seal ring (10) for preventing cooling water from entering the inner cavity of the elastic bearing (5), and a first check ring (8) for a hole and a third check ring (9) for protecting the seal ring (10) are sequentially arranged between the second check ring (25) and the seal ring (10); an outer retainer ring (2) used for preventing external impurities from entering the elastic bearing (5) is arranged on one side of the first retainer ring (21), a second hole retainer ring (4) is arranged between the outer retainer ring (2) and the first retainer ring (21), the outer retainer ring (2) is axially fixed through the shaft retainer ring (1), a plurality of sealing pieces (3) are arranged in the outer retainer ring (2), and the excircles of the sealing pieces (3) are in interference fit with the roller sleeve (6);
the positioning mandrel II (26) is in interference fit with an inner ring (23) of the elastic bearing (5), an outer ring (22) of the elastic bearing (5) is in interference fit with the roller sleeve (6), a needle roller retainer (24) for bearing radial load is arranged in the elastic bearing (5), and a check ring I (21) and a check ring II (25) for limiting the needle roller retainer (24) to move axially are arranged on two sides of the elastic bearing (5); one end of the second check ring (25) is provided with a seal ring (10) for preventing cooling water from entering the inner cavity of the elastic bearing (5), and a first check ring (8) for holes and a third check ring (9) for protecting the seal ring (10) are sequentially arranged between the second check ring (25) and the seal ring (10); one side of the first check ring (21) is provided with an outer check ring (2) used for preventing external impurities from entering the interior of the elastic bearing (5), a hole check ring two (4) is arranged between the outer check ring (2) and the first check ring (21), the outer check ring (2) is axially fixed through the shaft check ring (1), a plurality of sealing pieces (3) are arranged in the outer check ring (2), and the outer circles of the sealing pieces (3) are in interference fit with the roller sleeve (6).
3. The sectional roll apparatus for continuous billet casting according to claim 1, wherein: the outer circle surface of the roller sleeve (6) is formed by adopting high-temperature-resistant and corrosion-resistant stainless alloy steel automatic submerged arc surfacing, the surfacing layer comprises three layers, the bottom layer is a transition layer, the middle layer is a working layer, and the surface layer is a hardening layer; preheating is needed before welding, secondary hardening and stress removing treatment are needed after welding, the material is heated to a certain temperature and is kept warm for a period of time, so that the residual stress in the material is relaxed, and overlaying alloy elements are fully fused after secondary hardening, so that the hardness of the roller sleeve (6) is uniform, and the use requirement is met.
4. The sectional roll apparatus for continuous billet casting according to claim 1, wherein: the first positioning mandrel (7) and the second positioning mandrel (26) adopt quenching and tempering and surface quenching; the upper positioning seat (15), the lower positioning seat (16) and the gland (11) adopt oxidation treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975150.3A CN107520417B (en) | 2016-11-07 | 2016-11-07 | Sectional roller device for continuous casting of square billets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975150.3A CN107520417B (en) | 2016-11-07 | 2016-11-07 | Sectional roller device for continuous casting of square billets |
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| Publication Number | Publication Date |
|---|---|
| CN107520417A CN107520417A (en) | 2017-12-29 |
| CN107520417B true CN107520417B (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610975150.3A Active CN107520417B (en) | 2016-11-07 | 2016-11-07 | Sectional roller device for continuous casting of square billets |
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| CN108941493A (en) * | 2018-08-30 | 2018-12-07 | 东北大学 | A kind of use for laboratory small billet vertical casting machine roller column and its application method |
| CN110098019A (en) * | 2019-06-11 | 2019-08-06 | 洛阳铜一金属材料发展有限公司 | A kind of Copper-Aluminum compound band production equipment and alignment roller |
| CN110227807A (en) * | 2019-06-13 | 2019-09-13 | 联峰钢铁（张家港）有限公司 | A kind of anti-block support roll structure |
| CN111496209A (en) * | 2020-05-20 | 2020-08-07 | 中国重型机械研究院股份公司 | Guide section roller assembly and installation method thereof |
| CN111659862A (en) * | 2020-06-05 | 2020-09-15 | 中国重型机械研究院股份公司 | High-pulling-speed small square billet guide section roller assembling device and method |
Citations (4)
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| CN201353637Y (en) * | 2008-12-29 | 2009-12-02 | 中冶南方工程技术有限公司 | Segmental roller of broad and thick continuous caster |
| CN102941328A (en) * | 2012-11-09 | 2013-02-27 | 宁波中超机器有限公司 | Continuous casting roller |
| CN204018666U (en) * | 2014-07-25 | 2014-12-17 | 马钢(集团)控股有限公司 | A kind of shaped sectional roll of continuous casting |
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