CN201183061Y - Internal cooling multistage roller cover combined type large-sized backing roll - Google Patents
Internal cooling multistage roller cover combined type large-sized backing roll Download PDFInfo
- Publication number
- CN201183061Y CN201183061Y CNU2007201384930U CN200720138493U CN201183061Y CN 201183061 Y CN201183061 Y CN 201183061Y CN U2007201384930 U CNU2007201384930 U CN U2007201384930U CN 200720138493 U CN200720138493 U CN 200720138493U CN 201183061 Y CN201183061 Y CN 201183061Y
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- roller
- mandrel
- roller shell
- roller cover
- roll
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Abstract
The utility model discloses an internal cooling multi-section roller shell combined type large-scale supporting roller which is characterized in that a core shaft (1) and a multi-section roller shell (2) are nested together in a hot assembly way, a cooling trough (6) and an annular communicating groove (5) are respectively processed on the outer surface of the roller body of the core shaft (1), and the cooling trough (6), the annular communicating groove (5) and the multi-section roller shell (2) sleeved on the core shaft (1) form a closed chamber; water diversion channels (4) are processed inside the both ends of the roller body of the core shaft (1), one end of each of the water diversion channels (4) is communicated with the annular communicating groove (5), and the other ends are respectively communicated with water inlet channels (3) or water outlet channels (7) at the both ends of the core shaft (1). Because the multi-section roller shell (2) can be cooled through the cooling trough processed on the surface of the core shaft (1) of the supporting roller, the relative friction between the roller shell and the roller core is greatly increased; the height of the single roller shell is reduced through the multi-section roller shell (2), and the large-scale supporting roller is suitable for the batch production or the forging production of the ring rolling machine; when the thickness of the roller shell is reduced to be abandoned, the multi-section roller shell (2) is replaced, and the roller core can be reused, thereby the production cost is reduced.
Description
Technical field
The utility model relates to a kind of technical field of metallurgical machinery, particularly relates to a kind of multistage roller cover combined inner-cooling type large-scale supporting roller.
Background technology
Along with modernized strip-mill strip develops to maximization, high speed, automation direction, the requirement of tackling the strip-mill strip large-scale supporting roller mutually is also more and more higher.The large-scale supporting roller that strip-mill strip uses should be able to satisfy following rolling characteristic and require: 1. have high compression strength and favorable rigidity, be enough to bear high roll-force and peak load; 2. has good toughness, to avoid roll breakage, body of roll crackle and surfacial spalling; 3. body of roll working lining has advantages of good abrasion performance and anti-fatigue performance, to reduce the roller consumption; 4. body of roll working lining has uniform tissue and hardness, makes full roll surface have uniform mar proof; 5. has good corrosion resistance, with the corrosion of high temperature in the opposing operation of rolling with lubricated or cooling media.Based on above characteristic requirement, because alloy forged steel backing roll body surface hardness can reach about 70HSD, and have good wearability and higher mechanical properties concurrently, the fracture toughness of alloy forged steel backing roll is better than the cast steel backing roll again, so alloy forged steel backing roll has become the main first-selection of present strip-mill strip backing roll.
Strip-mill strip with large-scale supporting roller mainly contains: width belt steel hot-rolleding machine, wide flat steel cold-rolling mill, heavy and medium plate mill and wide and heavy plate mill or the like, the backing roll of strip-mill strip is one of important standby redundancy on each production line, and each heavy steel rolling mill all will consume a large amount of such rolls every year.Because consumption is big, the manufacturing cycle is long, and roll costs an arm and a leg, and present single backing roll cost can reach ten million yuan, therefore more and more causes technical staff's attention.In the service life of roll, steel productivity ratio and production cost are all had a significant impact.At present backing roll can't reach technological requirement through the long term wear and the back intensity of refacing, and adopts overlaying method reparation more, and complex process, use equipment are many, and repairing effect is undesirable.The large-scale supporting roller barrel length can reach 2～5 meters, and at present, the possessor has proposed the technical scheme at mandrel outer surface suit roller shell to the greatest extent, but because forging, the processing technology complexity of large thick-wall tube, and be easy to generate relative slip after being heated with between roller core.
Summary of the invention
Deficiencies such as the large-scale supporting roller that prior art exists costs an arm and a leg in order to overcome, renovation technique complexity and repairing effect are undesirable, the invention provides cooling large-sized backing roll in a kind of multistage roller cover combined type, the roller core of this utility model can be reused, multistage roller cover makes single roller shell height reduce greatly, be fit to machine for rolling ring and produce in batches or forge and produce, thereby can reduce production costs significantly.
The technical scheme that its technical problem that solves the utility model adopts is: the mandrel of multistage roller cover combined inner-cooling type large-scale supporting roller and multistage roller cover hot charging are joined edge and are nested together, and described multistage roller cover is made up of one group of identical or different roller shell of height dimension.The body of roll outer surface of mandrel is processed with bosh, and the body of roll outer surface two ends of mandrel process annular connectivity slot, and bosh is connected with annular connectivity slot, is sleeved on the chamber that multistage roller cover on the mandrel and bosh and annular connectivity slot form sealing.The inside at mandrel body of roll two ends is processed with the diversion passage, and an end of diversion passage is communicated with annular connectivity slot, and the other end is connected with the intake tunnel or the exhalant canal at mandrel two ends respectively, and intake tunnel connects the cooling pumping plant.
The beneficial effects of the utility model are: backing roll adopts the mode hot charging of multistage roller cover combination on the roller core surface, because the roller core Surface Machining has bosh, bosh both can play the roller shell cooling effect, had increased the relative friction forces between roller shell and roller core greatly.Multistage roller cover makes single roller shell height greatly reduce, and is fit to machine for rolling ring and produces in batches or forge and produce.The multistage roller cover of this utility model adopts the high hardness material roller core to adopt toughness material preferably, when roller shell thickness is reduced to when scrapping, changes the roller shell roller core and can reuse, and has improved the life cycle of roll, has reduced production cost.
Description of drawings
Fig. 1 is a kind of structural representation of interior cooling multistage roller cover combined large backing roll;
Fig. 2 is a kind of interior cooling multistage roller cover combined large backing roll B partial enlarged drawing;
Fig. 3 is a kind of structural representation of interior cooling multistage roller cover combined large backing roll roller core;
Fig. 4 is a kind of interior cooling multistage roller cover combined large backing roll roller core F-F cutaway view;
Fig. 5 is a kind of interior cooling multistage roller cover combined large backing roll roller core C partial enlarged drawing;
Fig. 6 is a kind of interior cooling multistage roller cover combined large backing roll roller core D partial enlarged drawing;
Fig. 7 is the structural representation of the whole roller shell combined large backing roll of a kind of interior cooling;
Fig. 8 is the E-E cutaway view of the whole roller shell combined large backing roll of a kind of interior cooling.
In above-mentioned accompanying drawing, 1. mandrel, 2. multistage roller cover, 3. intake tunnel, 4. diversion passage, 5. annular connectivity slot, 6. bosh, 7. exhalant canal, 8. whole roller shell.
The specific embodiment
Fig. 1 is the disclosed embodiment (see figure 1) of the utility model, and mandrel 1 and multistage roller cover 2 hot chargings are joined edge and are nested together, and described multistage roller cover 2 is made up of 10 identical roller shells of height dimension.Body of roll outer surface at mandrel 1 is processed with 45 bosh that parallels to the axis 6 (see figure 3)s, and body of roll two ends outer surface is processed annular connectivity slot 5, bosh 6 (see figure 5) that is connected with annular connectivity slot 5.Bosh 6 and annular connectivity slot 5 form the chamber (see figure 2) of sealing with the roller shell 2 that is sleeved on the mandrel 1.The inside at mandrel 1 body of roll two ends respectively is processed with 2 diversion passages 4, and (see Fig. 4, Fig. 5), an end of diversion passage 4 is communicated with annular connectivity slot 5, and the other end is connected with the intake tunnel 3 and the exhalant canal 7 at mandrel 1 two ends respectively, and intake tunnel 3 connects the cooling pumping plant.
Cooling water enters annular connectivity slot 5 and bosh 6 by diversion passage 4, cooling water cools off multistage roller cover 2 internally, to reduce the thermal expansion amount of multistage roller cover 2, make 1 of multistage roller cover 2 and roller core in the operation of rolling, keep the stable magnitude of interference, prevent that with the frictional force of 1 of roller core the two from producing relative slip to increase multistage roller cover 2.
Fig. 7 is disclosed another embodiment of the utility model, and mandrel 1 and whole roller shell 8 hot chargings are joined edge and are nested together, and are processed with 45 boshes that parallel to the axis 6 at the body of roll outer surface of mandrel 1, and body of roll two ends outer surface is processed annular connectivity slot 5.Bosh 6 and annular connectivity slot 5 form the chamber that seals with the whole roller shell 8 that is sleeved on the mandrel 1.The inside at mandrel 1 body of roll two ends respectively is processed with 2 diversion passages 4, and an end of diversion passage 4 is communicated with (see figure 8) with annular connectivity slot 5, and the other end is connected with the intake tunnel 3 and the exhalant canal 7 at mandrel 1 two ends respectively.Cooling water enters annular connectivity slot 5 and bosh 6 by diversion passage 4, cooling water cools off whole roller shell 8 internally, to reduce the thermal expansion amount of whole roller shell 8, make 1 of whole roller shell 8 and roller core in the operation of rolling, keep the stable magnitude of interference, to increase the frictional force of 1 of whole roller shell 8 and roller core.
Claims (3)
1. cooling multistage roller cover combined large backing roll in a kind, it is characterized in that: the mandrel (1) of described interior cooling multistage roller cover combined large backing roll and multistage roller cover (2) hot charging are joined edge and are nested together, and multistage roller cover (2) is made up of one group of identical or different roller shell of height dimension; The body of roll outer surface processing bosh (6) of mandrel (1), the body of roll two ends outer surface of mandrel (1) is processed annular connectivity slot (5), described bosh (6) is connected with annular connectivity slot (5), and the multistage roller cover (2) and the bosh (6) that are sleeved on the mandrel (1) form the chamber that seals with annular connectivity slot (5); The inside, body of roll two ends of mandrel (1) is processed with diversion passage (4), and an end of diversion passage (4) is communicated with annular connectivity slot (5), and the other end is connected with the intake tunnel (3) or the exhalant canal (7) at mandrel (1) two ends respectively.
2. cooling multistage roller cover combined large backing roll in according to claim 1, it is characterized in that: the spacing of adjacent two boshes of mandrel (1) body of roll outer surface (6) is 50-100mm, diversion passage (4) quantity is 2-10.
3. cooling multistage roller cover combined large backing roll in according to claim 1 and 2, it is characterized in that: the body of roll outer surface heat of described mandrel (1) assembles whole roller shell (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201384930U CN201183061Y (en) | 2007-12-26 | 2007-12-26 | Internal cooling multistage roller cover combined type large-sized backing roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201384930U CN201183061Y (en) | 2007-12-26 | 2007-12-26 | Internal cooling multistage roller cover combined type large-sized backing roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201183061Y true CN201183061Y (en) | 2009-01-21 |
Family
ID=40270798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201384930U Expired - Fee Related CN201183061Y (en) | 2007-12-26 | 2007-12-26 | Internal cooling multistage roller cover combined type large-sized backing roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201183061Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583964A (en) * | 2012-03-23 | 2012-07-18 | 广东科迪微晶玻璃实业有限公司 | Calendaring forming device of grinding-free and polishing-free black transparent glass ceramics |
| CN107282639A (en) * | 2017-06-23 | 2017-10-24 | 燕山大学 | It is a kind of to improve the device of roll on-line heating adaptability |
| CN110586819A (en) * | 2019-10-19 | 2019-12-20 | 宁波大学 | Split type long-life thread rolling wheel |
| CN113020274A (en) * | 2021-02-22 | 2021-06-25 | 山西铄金高温材料科技有限公司 | Internal cooling system capable of uniformly reducing temperature of roller |
-
2007
- 2007-12-26 CN CNU2007201384930U patent/CN201183061Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583964A (en) * | 2012-03-23 | 2012-07-18 | 广东科迪微晶玻璃实业有限公司 | Calendaring forming device of grinding-free and polishing-free black transparent glass ceramics |
| CN102583964B (en) * | 2012-03-23 | 2013-10-16 | 广东科迪微晶玻璃实业有限公司 | Calendaring forming device of grinding-free and polishing-free black transparent glass ceramics |
| CN107282639A (en) * | 2017-06-23 | 2017-10-24 | 燕山大学 | It is a kind of to improve the device of roll on-line heating adaptability |
| CN110586819A (en) * | 2019-10-19 | 2019-12-20 | 宁波大学 | Split type long-life thread rolling wheel |
| CN113020274A (en) * | 2021-02-22 | 2021-06-25 | 山西铄金高温材料科技有限公司 | Internal cooling system capable of uniformly reducing temperature of roller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090121 Termination date: 20101226 |