CN201764239U - Steel plate capable of avoiding surface cracks on side part - Google Patents
Steel plate capable of avoiding surface cracks on side part Download PDFInfo
- Publication number
- CN201764239U CN201764239U CN2010201633723U CN201020163372U CN201764239U CN 201764239 U CN201764239 U CN 201764239U CN 2010201633723 U CN2010201633723 U CN 2010201633723U CN 201020163372 U CN201020163372 U CN 201020163372U CN 201764239 U CN201764239 U CN 201764239U
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- Prior art keywords
- steel plate
- side part
- slab
- chamfering structure
- plate capable
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a steel plate capable of avoiding surface cracks on the side part, comprising a plate blank in cuboid structure, and two corners of the upper surface of the steel plate are blown into a chamfering structure (3) by flame processing, the size range of one side of the chamfering structure (3), close to a narrow surface (2), is from 40 to 50mm, and the size range of one side thereof, close to an inner arc surface (1), is from 5 to 8mm. The steel plate solves the problem that the side part of the steel plate in prior art is cracked.
Description
Technical field
The utility model belongs to the steel plate processing technique field, particularly relates to a kind of steel plate of avoiding limit portion surface crack.
Background technique
Wide and Thick Slab is used the continuous casting billet rolling-forming in a large number at present, and behind the continuous casting steel billet rolling-forming, the surface crack of steel plate increases, and is the subject matter of puzzlement Heavy Plate Production.Low-alloy series steel plate particularly, its surface crack is particularly remarkable.Wide and Thick Slab Surface Edge portion crackle is many, and excision crackle part back plate size up-to-standard rate is low, and the contract of having a strong impact on is cashed and the finishing of defective products index, and forms big pressure for simultaneously finishing of former kind up-to-standard rate.
There are four jiaos of helpless continuous casting steel billets that will be prone to limit portion crackle steel plate of Wide and Thick Slab producer to excise by 40～50mm, cause metal loss, shut out last piece daughter board off-dimension of steel plate, simultaneously productivity low (section 250 * 2300 slab productivitys reduction by 0.87%, section 180 * 1800 slab productivitys reduce by 1.54%).
Summary of the invention
The technical problems to be solved in the utility model provides a kind of steel plate of avoiding limit portion surface crack, to solve the problem that crackle appears in prior art light plate limit portion.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of steel plate of avoiding limit portion surface crack is provided, comprises slab, described slab is a rectangular structure, and its upper surface two corners purge into chamfering structure by flame treatment.
Described chamfering structure is 40-50mm near leptoprosopy dimensional range on one side, is 5-8mm near intrados dimensional range on one side.
Working principle is: unavoidably there is defective in continuous casting billet inner arc leptoprosopy, and the defect part of backup plate base inner arc leptoprosopy cleans out, and zero defect when the steel rolling down tilt spreads reduces steel plate limit portion crackle.
Beneficial effect
A, reduce production costs: in time eliminate the hidden danger that the steel plate limit is split, the steel plate that do not conform to reduced in size improves former kind size up-to-standard rate.
B, simple to operate, efficient is high: this method is only cleared up the slab leptoprosopy, need not to use fire to cut four jiaos of the long-time excisions of equipment.
C, improve productivity: this method with cut four jiaos and compare and reduce metal loss more than 5 times, improve yield of steel plate 0.75%～1.32%, will produce huge economic benefit.
D, production direct motion: this method is in time handled the defective of strand, avoids strand and steel plate to account for the storehouse at production line, the production direct motion.
E, this method applicability are wide: easily produce the hot continuous rolling production of splitting on the limit and also can use present technique.
Description of drawings
Fig. 1 is the utility model structural drawing.
Fig. 2 is the partial enlarged drawing of the chamfering structure of Fig. 1.
Wherein: 1-intrados, 2-leptoprosopy, 3-chamfering structure.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
As shown in Figure 1, a kind of steel plate of avoiding limit portion surface crack comprises slab, and described slab is a rectangular structure, and chamfering structure 3 is excised into by flame treatment in its upper surface two corners.
Described chamfering structure 3 is 40-50mm near leptoprosopy 2 dimensional range on one side, is 5-8mm near intrados 1 dimensional range on one side, the gradient 1: 3.Down tilt spreads the back flawless when rolling.Flame cleaning can be designed to on-line automatic or the off-line artificial mode.
Claims (2)
1. the steel plate that can avoid limit portion surface crack comprises slab, it is characterized in that: described slab is a rectangular structure, and its upper surface two corners purge into chamfering structure (3) by flame treatment.
2. a kind of steel plate of avoiding limit portion surface crack according to claim 1 is characterized in that: described chamfering structure (3) is 40-50mm near leptoprosopy (2) dimensional range on one side, is 5-8mm near intrados (1) dimensional range on one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201633723U CN201764239U (en) | 2010-04-16 | 2010-04-16 | Steel plate capable of avoiding surface cracks on side part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201633723U CN201764239U (en) | 2010-04-16 | 2010-04-16 | Steel plate capable of avoiding surface cracks on side part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201764239U true CN201764239U (en) | 2011-03-16 |
Family
ID=43716844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201633723U Expired - Fee Related CN201764239U (en) | 2010-04-16 | 2010-04-16 | Steel plate capable of avoiding surface cracks on side part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201764239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189104A (en) * | 2011-04-08 | 2011-09-21 | 攀钢集团钢铁钒钛股份有限公司 | Control method for edge peeling defect of cold-rolled non-oriented electrical steel |
-
2010
- 2010-04-16 CN CN2010201633723U patent/CN201764239U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189104A (en) * | 2011-04-08 | 2011-09-21 | 攀钢集团钢铁钒钛股份有限公司 | Control method for edge peeling defect of cold-rolled non-oriented electrical steel |
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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: 20110316 Termination date: 20120416 |