CN202105999U - Free roller for plate blank continuous casting - Google Patents
Free roller for plate blank continuous casting Download PDFInfo
- Publication number
- CN202105999U CN202105999U CN2011201103789U CN201120110378U CN202105999U CN 202105999 U CN202105999 U CN 202105999U CN 2011201103789 U CN2011201103789 U CN 2011201103789U CN 201120110378 U CN201120110378 U CN 201120110378U CN 202105999 U CN202105999 U CN 202105999U
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- CN
- China
- Prior art keywords
- roller
- continuous casting
- mandrel
- free roller
- plate blank
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- Expired - Fee Related
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Abstract
The utility model provides a free roller for plate blank continuous casting, including a roller sleeve and a spindle; the roller sleeve is made of a material Q345D; abrasion resistant welding wires are welding-deposited on a surface of the roller sleeve; the spindle is made of a forged piece 42CrMo; the roller sleeve material Q345D is heat resistant; and the abrasion resistant welding wires of 3mm to 5mm are welding-deposited on the surface of the roller sleeve. According to the utility model, a small amount of individual parts is used, the spindle is not easy to bend, and the free roller for the plate blank continuous casting has a long service life and a low cost and is convenient for maintenance.
Description
Technical field
The utility model relates to metallurgical continuous casting device therefor field, and especially a kind of sheet billet continuous casting is used free roller.
Background technology
The sheet billet continuous casting free roller assembling of extensive use in the market becomes two kinds of patterns of more piece roller for whole mandrel more piece roller shell mostly with single roller assembly.
Mainly there is following problem in wherein whole mandrel more piece roll sleeve type:
1, adorn, tear open difficulty: during assembling, lean on hydraulic press to be pressed into mandrel in the more piece roller shell, time-consuming; And when needing built-up welding after the roller shell wearing and tearing, or intermediate bearing damages be when needing to change, and the labour intensity of integral disassembly, assembly is big and dismounting is difficult; Simultaneously the scattered spare part on the free roller is many, scraps phenomenon after having comparatively serious tearing open, and waste is big, the cost height.
2, the flexible and fracture of whole mandrel: whole mandrel often need add ring and come running in bearings, can cause axle diameter to become more tiny like this; Number of bearings is few relatively, shrinks roll gap and causes middle roll gap greater than both sides roll gap 1-2mm easily, and the bad adjustment of wearing and tearing aggravation causes the slab bulge easily in the middle of adding, resistance of billet withdrawal becomes greatly, and resistance of billet withdrawal is bigger when stagnating base; Online equipment often finds that mandrel fracture leaks, and repairing is many afterwards.
3, whole mandrel machined is difficult: whole mandrel centre bore processing time consuming, so because the long lathe equipments that needs very high depth drill equipment of cost of use or transformation of the way dedicated tool of mandrel causes cost to improve once more.
Single roller assembly becomes more piece roller formula, mainly has following problem:
Because roller is whole, blanking will want big by long diameter, and waste material is many; Particularly use 42CrMo forging material, forging often requires bigger than φ 230, φ 250, φ 300 or the like, causes the processing waste; And the forging price is very high; The roller journal fracture is just scrapped, and causes very big waste, and bearing and bearing block use more simultaneously.
The utility model content
The utility model technical assignment is to above-mentioned technical deficiency, provides a kind of sheet billet continuous casting to use free roller.
The technical scheme that the utility model technical solution problem is adopted is: a kind of sheet billet continuous casting is used free roller; Comprise roller shell and mandrel; Said roller case material is Q345D; And surface overlaying has wear-resisting welding wire, and said mandrel is the 42CrMo forging, has solved original roller shell and mandrel and has made the high problem of production cost by expensive 42CrMo forging.
Said roller shell and mandrel are assembled together through key, or fit together through interference fit.
The beneficial effect that the utility model can bring is:
1, cost is low: owing to adopted two kinds of materials, greatly reduce the consumption of steel alloy 42CrMo material,
The forging diameter is little of more than 100 millimeters, and is shorter than single roller assembly type formula monoblock type roller cutting length, diameter is little, lacks than whole mandrel more piece roller shell pattern dismounting built-up welding assembling consumes zero loose mail, and mandrel is slightly not flexible, and cost is low.
2, long service life is not fragile: because single roller running in bearings seat quantity is more relatively, bearing capacity is big, and is not flexible, and middle roll gap can guarantee that the long period is constant, even the middle roller wearing and tearing are big, can adjust separately.Be difficult for causing quality problems such as slab bulge, resistance of billet withdrawal become greatly, strand center line crackle.
3, easy to maintenance: the built-up welding of assembling back roller shell wearing and tearing first need not dismantled roller shell, only dismantles bearing, keeps in repair efficient and conveniently, and labour intensity is low.
4, can be according to producing actual needs, the free roller of independent assortment varying number.
Description of drawings
The structural representation of Fig. 1, the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done following detailed description:
As shown in the figure, the utility model provides a kind of sheet billet continuous casting to use free roller, comprises roller shell 1 and mandrel 2, and said roller shell 1 material is Q345D, and surface overlaying has wear-resisting welding wire 3, and said mandrel 2 is the 42CrMo forging.
Said roller shell 1 material is heat-resisting Q345D, rather than expensive 42CrMo forging material, and such roller shell 1 wall is very thick, receives Heat stability is good, can also reduce production costs greatly.At the wear-resisting welding wire 3 of said roller shell 1 surface overlaying 3mm-5mm, roller shell 1 endoporus is worked into corresponding size, and is provided with the long keyway about 100mm, and interference fit need not spline certainly.
Said mandrel 2 adopts 42CrMo forging materials, and its cylindrical is worked into the size that matches with roller shell 1 endoporus just, and the endoporus of mandrel 2 is processed as φ 25mm-φ 40mm through hole, makes things convenient for the logical cooling of equipment current to use.
Said roller shell 1 is assembled together through key 4 with mandrel 2; Or fit together through interference fit; This relatively independent position relation of roller shell 1 and mandrel 2 and fit are compared with the free roller of existing whole mandrel more piece roller shell pattern, and processing and maintenance are all convenient.
Certainly when concrete the use; Can be according to producing actual needs; The a plurality of free rollers of independent assortment; The initiating terminal of first free roller and the tail end of last free roller are provided with the hole 5 of dress swivel joint, and the two ends of the tail end of first free roller, the initiating terminal of last free roller and other free roller then all are provided with double density sealing groove 6.Simultaneously, the cooling water between every adjacent two free rollers is realized connecting through tube connector.Connected mode between the bearing that free roller is used, swivel joint, tube connector and a plurality of free roller etc. all is a prior art, no longer too much narrates at this.
Because the utility model adopts single free roller or the combined mode of single free roller; So assembled shaft bearing quantity is more relatively; Bearing capacity is big; Not flexible, middle roll gap can guarantee that the long period is constant, is difficult for causing quality problems such as slab bulge, resistance of billet withdrawal become greatly, strand center line crackle.Even the middle roller wearing and tearing are big, also can adjust separately.When roller shell 1 wearing and tearing need built-up welding after the assembling first, also need not dismantle roller shell 1, only need the dismounting bearing to get final product; Do not exist dismounting to scrap the spare part situation, keep in repair efficient and conveniently, labour intensity is low; And after this processing mode roller shell 1 and mandrel 2 installations, the axiality of free roller can guarantee.
Claims (3)
1. a sheet billet continuous casting is used free roller, comprises roller shell and mandrel, it is characterized in that: said roller case material is Q345D, and surface overlaying has wear-resisting welding wire, and said mandrel is the 42CrMo forging.
2. a kind of sheet billet continuous casting according to claim 1 is used free roller, it is characterized in that: said roller shell and mandrel are assembled together through key.
3. a kind of sheet billet continuous casting according to claim 1 is used free roller, it is characterized in that: said roller shell and mandrel fit together through interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201103789U CN202105999U (en) | 2011-04-06 | 2011-04-06 | Free roller for plate blank continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201103789U CN202105999U (en) | 2011-04-06 | 2011-04-06 | Free roller for plate blank continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202105999U true CN202105999U (en) | 2012-01-11 |
Family
ID=45431448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201103789U Expired - Fee Related CN202105999U (en) | 2011-04-06 | 2011-04-06 | Free roller for plate blank continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202105999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211157A (en) * | 2011-04-06 | 2011-10-12 | 肖跃英 | Free roller for continuously casting plate blanks |
-
2011
- 2011-04-06 CN CN2011201103789U patent/CN202105999U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211157A (en) * | 2011-04-06 | 2011-10-12 | 肖跃英 | Free roller for continuously casting plate blanks |
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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: 20120111 Termination date: 20140406 |