CN202638868U - Combined roller - Google Patents
Combined roller Download PDFInfo
- Publication number
- CN202638868U CN202638868U CN 201220221914 CN201220221914U CN202638868U CN 202638868 U CN202638868 U CN 202638868U CN 201220221914 CN201220221914 CN 201220221914 CN 201220221914 U CN201220221914 U CN 201220221914U CN 202638868 U CN202638868 U CN 202638868U
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- Prior art keywords
- roller
- core
- shell
- roller shell
- roll
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Abstract
The utility model relates to a combined roller, which comprises a roller sleeve and a roller core as well as a cooling passage which is arranged on the combined roller, wherein the roller sleeve is in clearance fit with the roller core, and the roller sleeve and the roller core are fixedly connected with each other through a fixing device. Due to adopting the combined roller, the heat fatigue resistance of the roller sleeve can be improved, the factor causing the fatigue cracks can be improved, the service life of the roller sleeve and the roller core can be prolonged, the roller sleeve and the roller core are easy to dismount, the technique requirement is low, the efficiency is high, and the scrapping of the roller sleeve caused by tearing in the assembling process is difficult to happen.
Description
Technical field
The utility model relates to a kind of roll, and particularly a kind of assembly roller is used for slab caster.
Background technology
Roll can be divided into solid roll, metallurgical composite roll and assembly roller by manufacturing process.Edge cover assembly roller is to be formed by the roller core and the roller shell two parts shrink-on that adopt interference fit, belongs to a kind of of assembly roller.Easily produce the problems such as heat fatigue cracking defective for roller shell, prior art and patent are generally tended to try every possible means from roller case material and heat treatment method, or flow to, improve cooling effectiveness from the water-cooled of improving roller shell and roller core contact-making surface and set about, but for the economic and practical replaceable roller shell of employing and select rational roller shell mounting means etc. also not relate to.
In fact the edge cover assembly roller that uses in coloured casting field has the effect of water mold concurrently.The amount of heat that discharges during melt solidifying is delivered on the roller shell, then by the circulating water in the roller core outer surface upper flume ditch heat on the roller shell is taken away.So need at roller core surface boiling water groove, utilize the magnitude of interference between roller shell and the roller core that the water route is closed.
The edge cover assembly roller Main Problems that adopts at present is:
1) affects the intensity of roll surface at roller core surface boiling water groove, in large roll-force situation, easily caused the roll surface local collapse, especially can not satisfy the technological requirement of continuous casting billet being depressed greatly the manufacturing of the large roll-force of these class needs of liquid core rolling.
2) make, assembly technology is strict, the cycle is long.
Roller shell when car, grinding, need once from roller shell an end car, be ground to the other end, to guarantee concentricity and the axiality at roller shell two ends.Otherwise very easily form stronger shear stress after the assembling, easily cause fried roller in the use.
The timing of roller shell hot charging needed slowly be heated to about 300 ℃ from room temperature in 8-10 consuming time hour, and just can assemble after 3-4 hour in insulation under this temperature.As dealing with improperly, may produce stuck phenomenon during hot charging, make roller shell in a dilemma on roller core, cause roll to scrap.
3) edge shell type roller shell is stressed unreasonable, easily produces hot tearing, heat fatigue.
The hot charging of edge shell type roll is joined stress, thermal stress is large.Make edge cover assembly roller can transmit rolling torsion, not because expanded by heating becomes flexible, will cooperate to transmit roll torque by the large magnitude of interference between roller core, roller shell.In addition, difficulty relatively during hot charging, roller shell also easily produces the crack or bursts behind the hot charging.After being press-fitted, roller shell also is difficult to guarantee the even of contact stress.Can produce very large, inhomogeneous hot charging at roller shell like this and join stress.There are some researches show: when adopting the slight interference amount to cooperate, the hot charging that produces on the roller shell outer surface circumferencial direction is joined stress with decrease.But the magnitude of interference is less than normal, can cause the roller shell roller core skidding to occur, leaks when serious and stops use.
Roller shell is at circumferencial direction and radially all have larger temperature difference, an extreme temperatures of roller shell outer surface.Because constantly passing into cooling water, the roller shell internal surface temperature maintains between the 20-30 ° of C substantially at the roller shell inner surface.Cause and formed huge temperature difference between roller shell outer surface and the inner surface.Temperature difference is larger, and the inner thermal stress that produces of roller shell is just larger.
4) edge shell type roll working life depends primarily on the life-span of roller shell
Edge shell type roller performance depends primarily on the performance of roller shell.Edge shell type roll must carry out car, grinding in use for some time to remove the crackle on roller shell surface.The processing capacity of every train, grinding is 3mm-5mm, generally scraps behind car, grinding 4-8 time.
A large amount of roll consumptions is owing to roller shell local defect in the repair process causes scrapping.Roller shell damages and causes roller core to be scrapped, and causes the waste of a large amount of roller core materials.The inefficacy of edge shell type roll mainly is that roller shell lost efficacy.The form that roller shell lost efficacy has surface heat be full of cracks and roll surface local collapse etc., and the surface heat be full of cracks is main failure forms.
Summary of the invention
The purpose of this utility model provides a kind of assembly roller, it has improved the thermal fatigue resistance intensity of roller shell, improved the factor of roller shell generation heat fatigue cracking, prolonged the service life of roller shell and roller core, and roller shell and roller core easy disassembling, can change more easily roller shell, technological requirement is low, and efficient is high.
According to above-mentioned purpose, the utility model provides a kind of assembly roller, the roller core that it is included and roller shell adopt matched in clearance, there is not the magnitude of interference, roller shell and roller core pass through fixture, for example card key is connected connection with bolt, roller core inside also is provided with cooling-water duct, matched in clearance is not so that there has been hot charging to join stress on the roller shell, and being set in roller core inside, cooling-water duct replaces in the prior art mode at roller core surface boiling water groove, the thermograde of roller shell diminishes, the thermal stress that causes reduces, and is difficult for causing the roll surface local collapse in large roll-force situation, and hot charging is joined the elimination of stress and reducing also so that the thermal fatigue resistance intensity of roller shell has improved of thermal stress, roll-force is transmitted by the connected mode of card key and bolt, can not cause the skidding of roller shell and roller core.A kind of assembly roller of the present utility model comprises:
Roller shell and roller core, and be arranged at cooling duct on the assembly roller, it is characterized in that described roller shell and roller core are matched in clearance, are fixedly connected with by fixture.
Preferably, described fixture comprises some card keys and bolt, evenly is arranged at the end of roller shell and roller core, and an end of card key snaps in roller shell, and the other end is bolted on roller core.
Preferably, described cooling duct is some cooling-water ducts of being located at roller core inside.
A kind of assembly roller of the present utility model is because its included roller core and roller shell adopt matched in clearance, roller shell is connected card key and is connected connection with bolt with roller core, and roller core inside also is provided with cooling-water duct, compared with prior art, it has improved the thermal fatigue resistance intensity of roller shell, improved the factor that produces heat fatigue cracking, prolonged the service life of roller shell and roller core, and roller shell and roller core easy disassembling, technological requirement is low, efficient is high, and roller shell is not easy to cause in assembling process to be torn and scrap roller shell.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of a kind of assembly roller among a kind of embodiment of the present utility model.
Fig. 2 is the cutaway view of the A-A section of a kind of assembly roller among a kind of embodiment of the present utility model.
The specific embodiment
Below with reference to Figure of description a kind of assembly roller described in the utility model is further described in detail.
Fig. 1 has shown the structure of a kind of assembly roller among a kind of embodiment of the present utility model.
As shown in the figure, assembly roller in the present embodiment comprises roller shell 1 and roller core 2, and be arranged at cooling duct 4 on the assembly roller, wherein, roller shell 1 and roller core 2 adopt matched in clearance, and be fixed connection by fixture 3, there is not the magnitude of interference, roll-force by roller shell 1 from radially passing to roller core 2, assembly roller in the present embodiment is rigidity diametrically, can transmit large draught pressure, roller shell 1 tangentially is being flexible, roll torque is transmitted by fixture 3, in the present embodiment, roller shell 1 is connected with roller core and is preferably adopted several card keys 31 to be connected the fixture 3 that forms with bolt to connect, dismounting is than being easier to, card key 31 and bolt 32 evenly are arranged at the end of roller shell 1 and roller core 2, one end of card key 31 snaps in roller shell 1, the other end is fixed on the roller core 2 by bolt 32, can certainly form fixture 3 by other parts that be used for to connect and come roller shell 1 is connected with roller core to connect, also can reach the purpose of the same connection, wherein, the preferred card key 31 that adopts and the number needs of bolt 32 are decided on the roller shell 1 of actual use and the size of roller core 2 in the present embodiment, and this can carry out quantitative variation according to actual needs.
Fig. 2 is the cutaway view of the A-A section of a kind of assembly roller among a kind of embodiment of the present utility model.
As shown in the figure, cooling duct 4 is the cooling-water duct that is arranged at the inside of roller core 2, is used for cooling roll roll body.For small diameter roller, only adopt the mode of core water flowing, present embodiment has preferably adopted this mode, and for the major diameter roll, also can adopt at the roll roller core and bore a plurality of planets hole, mode by the logical cooling water in inside improves the roll body cooling effectiveness, so the number needs of cooling duct 4 diameter that will look roll changes and selects.
Be noted that above enumerate only for specific embodiment of the utility model, obviously the utility model is not limited to above embodiment, and many similar variations are arranged thereupon.If those skilled in the art all should belong to protection domain of the present utility model from all distortion that the disclosed content of the utility model directly derives or associates.
Claims (3)
1. an assembly roller comprises roller shell and roller core, and is arranged at the cooling duct on the assembly roller, it is characterized in that, described roller shell and roller core are matched in clearance, are fixedly connected with by fixture.
2. assembly roller as claimed in claim 1 is characterized in that, described fixture comprises some card keys and bolt, evenly is arranged at the end of roller shell and roller core, and an end of card key snaps in roller shell, and the other end is bolted on roller core.
3. assembly roller as claimed in claim 1 is characterized in that, described cooling duct is some cooling-water ducts of being located at roller core inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220221914 CN202638868U (en) | 2012-05-15 | 2012-05-15 | Combined roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220221914 CN202638868U (en) | 2012-05-15 | 2012-05-15 | Combined roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202638868U true CN202638868U (en) | 2013-01-02 |
Family
ID=47408046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220221914 Expired - Lifetime CN202638868U (en) | 2012-05-15 | 2012-05-15 | Combined roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202638868U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107000939A (en) * | 2014-12-16 | 2017-08-01 | 英特诺控股集团公司 | Roller with intraware |
| CN112247478A (en) * | 2020-09-24 | 2021-01-22 | 酒泉钢铁(集团)有限责任公司 | Copper alloy casting roller sleeve assembling method |
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
-
2012
- 2012-05-15 CN CN 201220221914 patent/CN202638868U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107000939A (en) * | 2014-12-16 | 2017-08-01 | 英特诺控股集团公司 | Roller with intraware |
| CN107000939B (en) * | 2014-12-16 | 2019-10-18 | 英特诺控股集团公司 | Roller with internal component |
| CN112247478A (en) * | 2020-09-24 | 2021-01-22 | 酒泉钢铁(集团)有限责任公司 | Copper alloy casting roller sleeve assembling method |
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BERIS ENGINEERING AND RESEARCH CORPORATION QINHUAN Free format text: FORMER OWNER: BERIS ENGINEERING AND RESEARCH CORPORATION SHANGHAI BRANCH Effective date: 20130106 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201203 PUDONG NEW AREA, SHANGHAI TO: 066004 QINHUANGDAO, HEBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130106 Address after: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 47 Patentee after: BERIS Engineering and Research Corporation QHD Branch Address before: 3, building 201203, building 5, building 3000, long East Road, Shanghai, Pudong New Area Patentee before: Shanghai Branch, BERIS Engineering and Research Corporation |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180522 Address after: 066004 Longhai Road, Qinhuangdao economic and Technological Development Zone, Hebei 71 Patentee after: MCC Qinhuangdao engineering design & Research Institute Co Ltd Address before: 066004 47 west section of Hebei Avenue, Qinhuangdao, Hebei. Patentee before: BERIS Engineering and Research Corporation QHD Branch |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |