CN202591224U - Combined supporting roller for large-sized cold rolling mill - Google Patents
Combined supporting roller for large-sized cold rolling mill Download PDFInfo
- Publication number
- CN202591224U CN202591224U CN 201220151442 CN201220151442U CN202591224U CN 202591224 U CN202591224 U CN 202591224U CN 201220151442 CN201220151442 CN 201220151442 CN 201220151442 U CN201220151442 U CN 201220151442U CN 202591224 U CN202591224 U CN 202591224U
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- roller
- cold rolling
- supporting roller
- combined supporting
- rolling mill
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Abstract
The utility model belongs to the technical field of cold rolling mills, and mainly provides a combined supporting roller for a large-sized cold rolling mill. The combined supporting roller is characterized by comprising a roller shaft (2) and a roller sleeve (1), wherein the roller sleeve (1) and the roller shaft (2) are thermally assembled into a whole to form the combined supporting roller. According to the combined supporting roller for the large-sized cold rolling mill, a waste supporting roller of which the roller body is abraded or the local part is peeled can be machined into the roller shaft by surface repair, a forged steel roller sleeve corresponding to the roller shaft is manufactured, the forged steel roller sleeve is heated in an oil bath and then thermally assembled into a whole with the roller shaft, and the whole is thermally treated. By the combined supporting roller, requirements for comprehensive mechanical property and service life of the supporting roller are met; and the manufacturing period of the supporting roller is shortened, the cost is reduced, and energy consumption is reduced.
Description
Technical field
The utility model belongs to the cold-rolling mill technical field, mainly proposes a kind of combined support roller that is used for the large-scale cold rolling machine.
Background technology
Large-scale supporting roller generally is used for the key and the core position of large-sized strip rolling equipment; Be to be used for supporting working roll or intermediate calender rolls in the milling train; Influencing the vitals of strip shape quality so that when rolling, prevent working roll from deflection deformation occurring, is the basic part of large-scale cold rolling, equipment of hot rolling; As the vitals of milling train, the requirement of backing roll is also improved constantly, require backing roll to have high wearability, resistance to fracture, anti-strip property.Especially higher requirement has been proposed in aspects such as large-scale supporting roller material, hardness of roll body, uniformity, hardenability, residual stress.Therefore, the forged steel backing roll should possess following key property usually:
(1) has very high quenching degree and high wearability, require the surface hardening layer depth to reach 50～80mm;
(2) backing roll inside has dense microstructure and good anti-accident property;
(3) have the ability of the very strong surperficial shearing stress under the alternate stress effect, peel off preventing;
(4) have high strength, stable rigidity.
Along with milling train develops to directions such as automation, high accuracy, the controls of high-quality plate shape, rolling condition is more and more harsher.Because backing roll bears heavy load for a long time when rolling, cause skimming wear easily, peel off and defective such as roll breakage.
The backing roll that is used for the large-scale cold rolling machine in the prior art has two kinds: a kind of is the monoblock type backing roll, and a kind of is the assembly type backing roll; Wherein, the monoblock type backing roll processes after adopting solid forging, heat treatment, and the intensity of monoblock type backing roll is better, if but after the backing roll damage, need to adopt technique for overlaying that backing roll is repaired; But can only integral replacing for the backing roll that can not use technique for overlaying to repair, to a certain degree increasing production cost.Assembly type backing roll of the prior art has solved the problems referred to above, and the assembly type backing roll comprises roller shell, roll shaft and hydraulic pressure draw-bar; Wherein roller shell, roll shaft are connected as a single entity through hydraulic pressure draw-bar; When roller shell generation fracture accident, can roller shell and roll shaft be separated, assemble use again behind reparation or the replacing roller shell; The deficiency that this version exists is: 1. roller shell, roll shaft connect through hydraulic pressure draw-bar, only can be used for small-sized backing roll; 2. the roller shell two ends need process the roll shaft installing hole, and are very high to requirements such as its axiality and cylindricities, otherwise will cause backing roll two ends disalignment, have a strong impact on the sheet material machining accuracy.
The utility model content
For solving the problems of the technologies described above, the purpose of the utility model is to propose a kind of combined support roller that is used for the large-scale cold rolling machine.
The utility model adopts following technical scheme for accomplishing the foregoing invention task:
A kind of combined support roller that is used for the large-scale cold rolling machine, described combined support roller comprises roll shaft and roller shell; Described roller shell and roll shaft hot charging are that one constitutes the combined support roller.
Described roll shaft carries out the surface reparation by waste and old backing roll and processes.
Described roller shell is the forged steel roller shell, selects high-carbon alloy steel 9Cr2Mo or 70Cr3Mo for use.
A kind of combined support roller that is used for the large-scale cold rolling machine that the utility model proposes; Can utilize the waste and old backing roll of body of roll wearing and tearing or localized delamination to carry out surface reparation and be processed as roll shaft; And corresponding roll shaft is made a forged steel roller shell; Hot charging all-in-one-piece combining structure is carried out with roll shaft in forged steel roller shell oil bath heating back, heat-treat at last, satisfied the comprehensive mechanical performance and the requirement in service life of backing roll; And shortened manufacturing cycle of backing roll, and reduced cost, practiced thrift energy consumption.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of roller shell in the utility model.
Fig. 3 is the structural representation of roll shaft in the utility model.
Among the figure: 1, roller shell, 2, roll shaft.
The specific embodiment
In conjunction with accompanying drawing and specific embodiment the utility model is explained:
As shown in Figure 1, and with reference to Fig. 2, a kind of combined support roller that is used for the large-scale cold rolling machine of Fig. 3, described combined support roller comprises roll shaft 2 and roller shell 1; Described roller shell 1 is that one constitutes the combined support roller with roll shaft 2 hot chargings; Among this embodiment; Described roll shaft 2 is undertaken processing after processing is repaired on the surface by the waste and old backing roll of body of roll wearing and tearing or localized delamination, and the material of said roll shaft 2 is 70Cr3NiMo, and said roller shell 1 corresponding roll shaft is processed; Be the forged steel axle sleeve, the material of said axle sleeve is 9Cr2Mo; Roller shell 1 oil bath heating back and roll shaft 1 are integral through hot charging; Heat-treat at last and machine finishing; Has certain magnitude of interference between the mating surface of roll shaft and roller shell; In order to guarantee transmitting certain load, do not cause the roller shell plastic deformation or the phenomenon of bursting apart again, the heating-up temperature of roller shell is 116 ℃.
Claims (3)
1. combined support roller that is used for the large-scale cold rolling machine, it is characterized in that: described combined support roller comprises roll shaft (2) and roller shell (1); Described roller shell (1) is that one constitutes the combined support roller with roll shaft (2) hot charging.
2. a kind of combined support roller that is used for the large-scale cold rolling machine according to claim 1 is characterized in that: described roll shaft (2) carries out the surface reparation by waste and old backing roll and processes.
3. a kind of combined support roller that is used for the large-scale cold rolling machine according to claim 1 is characterized in that: described roller shell (1) is the forged steel roller shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151442 CN202591224U (en) | 2012-04-12 | 2012-04-12 | Combined supporting roller for large-sized cold rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151442 CN202591224U (en) | 2012-04-12 | 2012-04-12 | Combined supporting roller for large-sized cold rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202591224U true CN202591224U (en) | 2012-12-12 |
Family
ID=47308807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220151442 Expired - Fee Related CN202591224U (en) | 2012-04-12 | 2012-04-12 | Combined supporting roller for large-sized cold rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202591224U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115319125A (en) * | 2022-10-14 | 2022-11-11 | 徐州乐来工程机械有限公司 | Mechanical roller turning, reforming and recycling equipment and using method thereof |
-
2012
- 2012-04-12 CN CN 201220151442 patent/CN202591224U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115319125A (en) * | 2022-10-14 | 2022-11-11 | 徐州乐来工程机械有限公司 | Mechanical roller turning, reforming and recycling equipment and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20170412 |