CN109513889A - A kind of small billet tube type mold that off-square is effectively reduced - Google Patents
A kind of small billet tube type mold that off-square is effectively reduced Download PDFInfo
- Publication number
- CN109513889A CN109513889A CN201910005058.8A CN201910005058A CN109513889A CN 109513889 A CN109513889 A CN 109513889A CN 201910005058 A CN201910005058 A CN 201910005058A CN 109513889 A CN109513889 A CN 109513889A
- Authority
- CN
- China
- Prior art keywords
- taper
- square
- tapered section
- range
- cavity
- Prior art date
- 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.)
- Pending
Links
- 239000012634 fragment Substances 0.000 claims abstract description 14
- 230000010354 integration Effects 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/0406—Moulds with special profile
Abstract
The invention discloses a kind of small billet tube type molds that off-square is effectively reduced, including are made into integration by two groups of opposite faces, and section is the cavity of square structure；The cavity one group opposite face is to face directly, another opposite face is cambered surface, and described face directly with cambered surface includes the first tapered section being made into integration, the second tapered section, third tapered section, the 4th tapered section and the 5th tapered section；The first taper fragment position is 0~250mm, 3.5~6.5%/m of range of taper；Second taper fragment position is 250~450mm, range of taper 2.0~3.0) %/m；Third taper fragment position is 450~650mm, range of taper 1.0~1.5) %/m；4th taper 650~850mm of fragment position, 0.5~0.8%/m of range of taper；5th taper fragment position is 850~900mm, 0.1~0.3%/m of range of taper.The small billet tube type mold that off-square is effectively reduced of the invention；In actual production process, under identical process conditions, slab quality is greatly improved, and casting blank off-square rate is reduced to 0.028% from 0.09%.
Description
Technical field
The present invention relates to a kind of crystallizers, and in particular to a kind of small billet tube type mold that off-square is effectively reduced belongs to
Crystallizer technology field.
Background technique
With the fast development of China's steel technology, continuous casting technology is also strided forward towards efficient trend, the pass of high efficiency continuous casting
Key technology is the green shell for making high-temperature molten steel form certain thickness and intensity within the very short time by crystallizer internal cavity, to resist
Molten steel static pressure guarantees the direct motion of continuous casting steel machine；The core of high efficiency continuous casting is crystallizer, the design of crystallizer internal cavity taper curve
It is especially prominent with optimizing；For the thermal deformation for adapting to contraction distortion and crystallizer itself of the slab in crystallizer, crystallizer internal cavity
It is in a shape of big-top and small-bottom with tapered, to reduce air gap thickness, improve cooling condition, improves pulling rate and product quality；Taper
Too small air gap thickness is big, influences Billet, restricts the raising of drawing speed；The excessive resistance of billet withdrawal of taper is big, aggravation crystallization
Device abrasion, or even slab can be broken and lead to bleed-out accident；At this stage after pulling rate raising, slab quality is decreased obviously, especially
It is that small billet off-square defect increased significantly, the inner cavity taper Curve Design of crystallizer copper pipe is not able to satisfy the need of prior art condition
It wants, for such situation, needs to re-start design to the taper curve of crystallizer copper pipe.
Summary of the invention
To solve the above problems, the invention proposes a kind of small billet tube type mold that off-square is effectively reduced, exploitation is set
Crystallizer copper pipe inner cavity taper curve is counted, small billet casting blank off-square is controlled；Solve the problems, such as casting blank off-square.
The small billet tube type mold that off-square is effectively reduced of the invention, including be made into integration by two groups of opposite faces, and cut
Face is the cavity of square structure；The cavity one group opposite face is to face directly, another opposite face is cambered surface, described to face directly and arc
Face includes the first tapered section being made into integration, the second tapered section, third tapered section, the 4th tapered section and the 5th tapered section；It is described
First taper fragment position is 0~250mm, 3.5~6.5%/m of range of taper；Second taper fragment position is 250~450mm, cone
Spend range 2.0~3.0) %/m；Third taper fragment position is 450~650mm, range of taper 1.0~1.5) %/m；4th tapered section
650~850mm of position, 0.5~0.8%/m of range of taper；5th taper fragment position be 850~900mm, range of taper 0.1~
0.3%/m；In actual application process, at identical conditions, casting blank off-square defect significantly reduces pulling rate, meets existing
Closer, the air gap reduction of solidification shrinkage rule of the molten steel in crystallizer under high pulling rate, casting blank shell and copper pipe contact, green shell
Homoepitaxial can well solve the quality problems of small billet casting blank off-square under high pulling rate.
As preferred embodiment, adjacent described is faced directly between cambered surface by round-corner transition.
As preferred embodiment, the housing width and height are 120 × 120mm ~ 165 × 165mm, the cavity
Length is 850~950mm, and the cavity is the suitable for reading of crystallizer close to first tapered section one end, and the cavity is close to the 5th cone
Spend the lower mouth that section one end is crystallizer.
The present invention compared with prior art, the small billet tube type mold that off-square is effectively reduced of the invention；In reality
Production process in, under identical process conditions, slab quality is greatly improved, and casting blank off-square rate is reduced to 0.028% from 0.09%.
Detailed description of the invention
Fig. 1 is radial section structural schematic diagram of the invention.
Fig. 2 is overall structure diagram of the invention.
Specific embodiment
Embodiment 1:
The small billet tube type mold that off-square is effectively reduced as shown in Figure 1, including be made into integration by two groups of opposite faces, and section
For the cavity 1 of square structure；The 1 one group opposite face of cavity is to face 2 directly, another opposite face is cambered surface 3, described to face 2 directly
It include the first tapered section 4 being made into integration, the second tapered section 5, third tapered section 6, the 4th tapered section 7 and the 5th cone with cambered surface 3
Spend section 8；First tapered section, 4 position is 0~250mm, 3.5~6.5%/m of range of taper；Second tapered section, 5 position is
250~450mm, range of taper 2.0~3.0) %/m；6 position of third tapered section be 450~650mm, range of taper 1.0~
1.5) %/m；4th tapered section 7 650~850mm of position, 0.5~0.8%/m of range of taper；5th tapered section, 8 position be 850~
900mm, 0.1~0.3%/m of range of taper；In actual application process, pulling rate at identical conditions, casting blank off-square defect
It significantly reduces, meets solidification shrinkage rule of the molten steel in crystallizer under existing high pulling rate, what casting blank shell and copper pipe contacted
Closer, air gap is reduced, and green shell homoepitaxial can well solve the quality problems of small billet casting blank off-square under high pulling rate.
In another embodiment, adjacent described is faced directly between 2 and cambered surface 3 by round-corner transition.
In another embodiment, 1 width of cavity and height are 120 × 120mm ~ 165 × 165mm, 1 length of cavity
For 850~950mm, the cavity 1 is the suitable for reading of crystallizer close to 4 one end of the first tapered section, and the cavity 1 is close to the 5th taper
8 one end of section are the lower mouth of crystallizer.
Above-described embodiment is only better embodiment of the invention, therefore all according to structure described in present patent application range
It makes, the equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (3)
1. a kind of small billet tube type mold that off-square is effectively reduced, it is characterised in that: including being made into integration by two groups of opposite faces,
And section is the cavity of square structure；The cavity one group opposite face is to face directly, another opposite face is cambered surface, described to face directly
It include the first tapered section being made into integration, the second tapered section, third tapered section, the 4th tapered section and the 5th tapered section with cambered surface；
The first taper fragment position is 0~250mm, 3.5~6.5%/m of range of taper；Second taper fragment position be 250~
450mm, range of taper 2.0~3.0) %/m；Third taper fragment position is 450~650mm, range of taper 1.0~1.5) %/m；The
Four taper 650~850mm of fragment position, 0.5~0.8%/m of range of taper；5th taper fragment position is 850~900mm, taper model
Enclose 0.1~0.3%/m.
2. the small billet tube type mold according to claim 1 that off-square is effectively reduced, it is characterised in that: described in adjacent
It faces directly between cambered surface by round-corner transition.
3. the small billet tube type mold according to claim 1 that off-square is effectively reduced, it is characterised in that: the cavity is wide
Degree and height are 120 × 120mm ~ 165 × 165mm, and the cavity length is 850~950mm, and the cavity is close to the first taper
Duan Yiduan is the suitable for reading of crystallizer, and the cavity is the lower mouth of crystallizer close to the 5th tapered section one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005058.8A CN109513889A (en) | 2019-01-03 | 2019-01-03 | A kind of small billet tube type mold that off-square is effectively reduced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005058.8A CN109513889A (en) | 2019-01-03 | 2019-01-03 | A kind of small billet tube type mold that off-square is effectively reduced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109513889A true CN109513889A (en) | 2019-03-26 |
Family
ID=65798853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910005058.8A Pending CN109513889A (en) | 2019-01-03 | 2019-01-03 | A kind of small billet tube type mold that off-square is effectively reduced |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109513889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178493A (en) * | 2021-11-26 | 2022-03-15 | 安徽马钢表面技术股份有限公司 | Heavy H-shaped steel crystallizer and design method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0958871A1 (en) * | 1998-05-18 | 1999-11-24 | Concast Standard Ag | Mould for continuous casting of substantially polygonal strands |
| CN2489897Y (en) * | 2001-09-01 | 2002-05-08 | 大连大山结晶器厂 | Crystallizer copper pipe |
| CN210080678U (en) * | 2019-01-03 | 2020-02-18 | 山东莱钢永锋钢铁有限公司 | Small square billet tubular crystallizer capable of effectively reducing stripping |
-
2019
- 2019-01-03 CN CN201910005058.8A patent/CN109513889A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0958871A1 (en) * | 1998-05-18 | 1999-11-24 | Concast Standard Ag | Mould for continuous casting of substantially polygonal strands |
| CN2489897Y (en) * | 2001-09-01 | 2002-05-08 | 大连大山结晶器厂 | Crystallizer copper pipe |
| CN210080678U (en) * | 2019-01-03 | 2020-02-18 | 山东莱钢永锋钢铁有限公司 | Small square billet tubular crystallizer capable of effectively reducing stripping |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178493A (en) * | 2021-11-26 | 2022-03-15 | 安徽马钢表面技术股份有限公司 | Heavy H-shaped steel crystallizer and design method |
| CN114178493B (en) * | 2021-11-26 | 2023-08-22 | 安徽马钢表面技术股份有限公司 | Heavy H-shaped steel crystallizer and design method |
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