CN101284281A - Multistage roller jacket combination inner-cooling large-sized back-up roll - Google Patents
Multistage roller jacket combination inner-cooling large-sized back-up roll Download PDFInfo
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- CN101284281A CN101284281A CNA2008100871702A CN200810087170A CN101284281A CN 101284281 A CN101284281 A CN 101284281A CN A2008100871702 A CNA2008100871702 A CN A2008100871702A CN 200810087170 A CN200810087170 A CN 200810087170A CN 101284281 A CN101284281 A CN 101284281A
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- roller
- mandrel
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- roll sleeve
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Abstract
The invention discloses a multi-section roll sleeve combined inner-cold type large-scale support roller, which is characterized in that: a core shaft (1) and a multi-section roll sleeve (2) are inserted and sleeved together by hot assembly, a cooling water tank (6) and an annular communicating tank (5) are processed on the external surface of the roll body of the core shaft (1), the cooling water tank (6), the annular communicating tank (5) and the multi-section roll sleeve (2) which is sleeved on the core shaft (1) form a closed cavity; a water leading channel (4) is processed in the both ends of the roll body of the core shaft (1), one end of the water leading channel (4) communicates with the annular communicating tank (5), the other end respectively communicates with a water inlet channel (3) or a water outlet channel (7) arranged at the both ends of the core shaft (1). As the cooling water tank is processed on the surface of the roll core (1) of the invention to carry out cooling of the multi-section roll sleeve (2), the relative friction between the roll sleeve and the roll core is greatly increased. The multi-section roll sleeve (2) reduces the height of the single roll sleeve, so as to be applicable to batch production or forging production by a ring rolling machine. When the thickness of the roll sleeve is reduced to be out of service, the multi-section roll sleeve (2) is replaced and the roll core (1) can be used repeatedly, thus reducing the production cost.
Description
Technical field
The present invention relates to a kind of technical field of metallurgical machinery, particularly relate 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 a kind of multistage roller cover combined inner-cooling type large-scale supporting roller, the roller core of this invention 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 solution adopted for the present invention to solve the technical problems 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 invention has the beneficial effects as follows: 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 invention 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 the structural representation of multistage roller cover combined inner-cooling type large-scale supporting roller;
Fig. 2 is a multistage roller cover combined inner-cooling type large-scale supporting roller B partial enlarged drawing;
Fig. 3 is the structural representation of multistage roller cover combined inner-cooling type large-scale supporting roller roller core;
Fig. 4 is a multistage roller cover combined inner-cooling type large-scale supporting roller roller core F-F cutaway view;
Fig. 5 is a multistage roller cover combined inner-cooling type large-scale supporting roller roller core C partial enlarged drawing;
Fig. 6 is a multistage roller cover combined inner-cooling type large-scale supporting roller roller core D partial enlarged drawing;
Fig. 7 is the structural representation of whole roller shell inner-cooling type large-scale supporting roller;
Fig. 8 is the E-E cutaway view of whole roller shell inner-cooling type large-scale supporting roller.
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 an embodiment disclosed by the invention, mandrel 1 and multistage roller cover 2 hot chargings are joined edge and are nested together, described multistage roller cover 2 is made up of 10 measure-alike roller shells, body of roll outer surface at mandrel 1 is processed with 45 boshes that parallel to the axis 6, body of roll two ends outer surface is processed annular connectivity slot 5, and bosh 6 is connected with annular connectivity slot 5.Bosh 6 and annular connectivity slot 5 form the chamber that seals 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 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.
Multistage roller cover 2 makes the height of single roller shell reduce greatly, is fit to machine for rolling ring and produces in batches or forge and produce.The multistage roller cover 2 of multistage roller cover combined inner-cooling type large-scale supporting roller adopts high hardness material roller core 1 to adopt toughness material preferably, has reduced material cost.Select suitable roller shell thickness, can satisfy the requirement that roll surface is refaced, when roller shell thickness is reduced to the minimum of a value of requirement, can change roller shell, reuse roller core 1, reduce production cost of products greatly thereby reach.The thickness of roller shell usually should be greater than the twice of the amount of refacing, to guarantee stable pretightning force.
Embodiment 2
Fig. 6 is another embodiment disclosed by the invention, 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 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. multistage roller cover combined inner-cooling type large-scale supporting roller, it is characterized in that: mandrel of multistage roller cover combined inner-cooling type large-scale supporting roller (1) and multistage roller cover (2) hot charging are joined edge and are nested together, and described multistage roller cover (2) is made up of one group of identical or different roller shell of height dimension; Mandrel (1) body of roll outer surface processing bosh (6), mandrel (1) body of roll two ends outer surface 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. multistage roller cover combined inner-cooling type large-scale supporting roller according to claim 1 is characterized in that: the spacing of adjacent two boshes of mandrel (1) body of roll outer surface (6) is 50-100mm, and diversion passage (4) quantity is 2-10.
3. multistage roller cover combined inner-cooling type large-scale supporting roller according to claim 1 and 2 is characterized in that: described mandrel (1) hot charging is joined whole roller shell (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100871702A CN101284281A (en) | 2007-12-15 | 2008-03-19 | Multistage roller jacket combination inner-cooling large-sized back-up roll |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710185455.5 | 2007-12-15 | ||
| CNA2007101854555A CN101185941A (en) | 2007-12-15 | 2007-12-15 | Multistage roller cover combined inner-cooling type large-scale supporting roller |
| CNA2008100871702A CN101284281A (en) | 2007-12-15 | 2008-03-19 | Multistage roller jacket combination inner-cooling large-sized back-up roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101284281A true CN101284281A (en) | 2008-10-15 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101854555A Pending CN101185941A (en) | 2007-12-15 | 2007-12-15 | Multistage roller cover combined inner-cooling type large-scale supporting roller |
| CNA2008100871702A Pending CN101284281A (en) | 2007-12-15 | 2008-03-19 | Multistage roller jacket combination inner-cooling large-sized back-up roll |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101854555A Pending CN101185941A (en) | 2007-12-15 | 2007-12-15 | Multistage roller cover combined inner-cooling type large-scale supporting roller |
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| CN (2) | CN101185941A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704941A (en) * | 2018-05-31 | 2018-10-26 | 泰尔重工股份有限公司 | A kind of novel bushing backing roll |
| CN114346135A (en) * | 2020-12-17 | 2022-04-15 | 韶能集团(韶关)华南精锻科技有限公司 | Hollow core roller device for hot rolling ring |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966730A (en) * | 2010-07-06 | 2011-02-09 | 苏州市科创聚合物有限公司 | Cooling water tank for extrusion granulating production line |
| CN103272846B (en) * | 2013-06-05 | 2015-07-08 | 浙江兆隆合金股份有限公司 | Rolling system |
| CN103785687B (en) * | 2014-02-12 | 2016-06-29 | 武汉科技大学 | A kind of roll sleeve type roll adopting heat-conducting oil heating |
| CN103785689B (en) * | 2014-02-12 | 2016-01-13 | 武汉科技大学 | A kind of constant temperature roll based on conduction oil |
| CN110576046A (en) * | 2018-06-10 | 2019-12-17 | 江苏君睿智能制造有限公司 | Heating device of cold rolling roller die |
| CN109433827B (en) * | 2018-12-26 | 2024-03-26 | 常州纳科诺尔精密轧制设备有限公司 | Intelligent adjustment nested roller |
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2007
- 2007-12-15 CN CNA2007101854555A patent/CN101185941A/en active Pending
-
2008
- 2008-03-19 CN CNA2008100871702A patent/CN101284281A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704941A (en) * | 2018-05-31 | 2018-10-26 | 泰尔重工股份有限公司 | A kind of novel bushing backing roll |
| CN114346135A (en) * | 2020-12-17 | 2022-04-15 | 韶能集团(韶关)华南精锻科技有限公司 | Hollow core roller device for hot rolling ring |
| CN114346135B (en) * | 2020-12-17 | 2022-08-02 | 韶能集团(韶关)华南精锻科技有限公司 | Hollow core roller device for hot rolling ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101185941A (en) | 2008-05-28 |
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Open date: 20081015 |