CN109238091A - Thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device - Google Patents
Thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device Download PDFInfo
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- CN109238091A CN109238091A CN201811051169.4A CN201811051169A CN109238091A CN 109238091 A CN109238091 A CN 109238091A CN 201811051169 A CN201811051169 A CN 201811051169A CN 109238091 A CN109238091 A CN 109238091A
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- wire
- slag layer
- continuous casting
- metal bar
- thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
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- General Physics & Mathematics (AREA)
- Continuous Casting (AREA)
Abstract
A kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device of the present invention, the wire I and wire II being fixed on including metal bar, along metal bar length direction on metal bar；For the fusing point of wire I between covering slag liquid slag layer temperature and molten steel temperature, the fusing point of wire II is lower than covering slag liquid slag layer temperature, and the fusing point of metal bar is higher than molten steel temperature.Using the present invention can quickly, accurately measure thickness of molten slag layer of mold flux of continuous casting crystallizer, provide data for technical staff and support, help technical staff to improve continuous casting process, the suitable covering slag of selection, and then promote continuous casting billet product quality.
Description
Technical field
The present invention relates to a kind of measuring device more particularly to a kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measurement dresses
It sets.
Background technique
In smelter steel-making continuous casting steel machine production, thickness of molten slag layer of mold flux of continuous casting crystallizer directly influences crystallization
Device menisci and initial solidification shell quality, and then determine surface quality of continuously cast slab, cc billet surface quality defect can be genetic to again
Stocking finished surface defect is caused on stocking surface, influences finished product quality, especially needs the slab of subsequent deep processing, more
It needs to pay close attention to thickness of molten slag layer of mold flux of continuous casting crystallizer.For a long time, there is no continuous crystallizer protecting slag liquid slag layers for industry
Thickness sensitivity means, lead to covering slag liquid slag layer thickness data blank, and technical staff can not improve continuous casting according to liquid slag layer thickness
Technique, selection covering slag, seriously affect the promotion of slab quality.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device,
Covering slag liquid slag layer thickness can be easily and fast measured, improves continuous casting process for technical staff, selection covering slag provides data branch
It holds, and then promotes slab quality.
The technical solution for solving above-mentioned technical problem is:
A kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device, including metal bar, be fixed on along metal bar length direction
Wire I and wire II on metal bar；The fusing point of wire I between covering slag liquid slag layer temperature and molten steel temperature,
The fusing point of wire II is lower than covering slag liquid slag layer temperature, and the fusing point of metal bar is higher than molten steel temperature.
A kind of above-mentioned thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device, the wire I and wire II are
The lower end of axis that is linear and being parallel to metal bar, wire I and wire II is located at approximately the same plane.
A kind of above-mentioned thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device, the length of the wire I, wire II
Degree is greater than the sum of covering slag slag layer, covering slag liquid slag layer and molten steel height, and the length of the metal bar is greater than wire I or gold
Belong to the length of silk II.
A kind of above-mentioned thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device, the diameter of the metal bar is 5~
10mm, length are 35~50cm；The diameter of the wire I and wire II is 1~4mm of Φ, and length is 18~25cm.
Application method of the invention are as follows:
Hand-held metal bar upper end, lower end aligned, which connects, needs detection position in crystallizer, is inserted into along the vertical direction, and insertion depth 10~
15cm is advisable, and guarantee penetrates liquid slag layer and enters molten steel, keeps insertion 5~7s of time, then proposes metal bar upwards；To metal
After stick is cooled to room temperature, the residue length of wire I and wire II is measured respectively using the ruler of minimum unit 1mm, according to
The original length of wire I and wire II can calculate the fusing length of wire I and wire II, then covering slag liquid slag layer
Fusing length-wire I fusing length of thickness=wire II.Its theoretical foundation are as follows: Mold temperature is 1400
~1500 DEG C, covering slag liquid slag layer temperature is 1000~1050 DEG C；The fusing point of wire I is between covering slag liquid slag layer temperature and steel
Between liquid temperature, the fusing point of wire II is lower than covering slag liquid slag layer temperature, and the fusing point of metal bar is higher than molten steel temperature；And continuous casting
Top layer is covering slag slag layer in crystallizer, centre is covering slag liquid slag layer, the bottom is molten steel, when metal bar is inserted into molten steel
In and keep 5~7s after, metal bar will not melt；Since the fusing point of wire II is lower than covering slag liquid slag layer temperature, then metal
Part of the silk II in covering slag liquid slag layer and molten steel is all melted, and since the fusing point of wire I is between covering slag liquid slag layer
Between temperature and molten steel temperature, so part of the wire I in molten steel will be melted, and the part in liquid slag layer will not melt
Change；Again since the lower end of wire I and wire II is generally aligned in the same plane, so covering slag liquid slag layer thickness=wire II
The fusing length of fusing length-wire I.
The invention has the benefit that
Using the present invention can quickly, accurately measure thickness of molten slag layer of mold flux of continuous casting crystallizer, provide data branch for technical staff
It holds, helps technical staff to improve continuous casting process, the suitable covering slag of selection, and then promote continuous casting billet product quality.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of the invention；
Fig. 2 is application method schematic diagram of the present invention；
In the figure, it is marked as metal bar 1, wire I 2, wire II 3, covering slag liquid slag layer 4, molten steel 5,
Covering slag slag layer 6, steel wire 7.
Specific embodiment
Fig. 1 shows, a kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device of the present invention, including metal bar 1, along gold
The length direction for belonging to stick 1 is fixed on wire I 2 and wire II 3 on metal bar 1；Wire I 2 and wire II 3 are straight line
The lower end of shape and the axis for being parallel to metal bar 1, wire I 2 and wire II 3 is located at approximately the same plane；Wire I 2 melts
Point is between the temperature of covering slag liquid slag layer 4 and the temperature of molten steel 5, and the fusing point of wire II 3 is lower than covering slag liquid slag layer 4
Temperature, the fusing point of metal bar 1 are higher than the temperature of molten steel 5；The length of wire I 2 is greater than covering slag slag layer 6, covering slag melt cinder
The length of layer the sum of 4 and the height of molten steel 5, wire II 3 is greater than covering slag slag layer 6, covering slag liquid slag layer 4 and molten steel 5
The sum of height, the length of the metal bar 1 are greater than the length of wire I 2 or wire II 3.
In the present embodiment, metal bar 1 is the rod iron of the Q235 trade mark, and the upper end bends to hook solid and facilitates gripping, diameter
For 8mm, length 50cm, liquidus curve is 1518~1527 DEG C；Wire I is copper wire, diameter 2mm, long 22mm, and fusing point is
1083.4℃；Wire II 3 is aluminium wire, and diameter 2mm, long 22mm, fusing point is 660 DEG C；Wire I 2 and wire II 3 pass through
Steel wire 7 is bundled on metal bar 1.
Fig. 2 is shown, when measuring the thickness of covering slag liquid slag layer 4 using the present invention, holds the upper end of metal bar 1, lower end pair
Standard, which connects, needs detection position in crystallizer, be inserted into along the vertical direction, and 10~15cm of insertion depth is advisable, and guarantee penetrates liquid slag layer 4
Into molten steel 5, insertion 5~7s of time is kept, then proposes metal bar 1 upwards；After metal bar 1 is cooled to room temperature, use
The ruler of minimum unit 1mm measures the residue length of copper wire I 2 and aluminum metal silk II 3 respectively, according to I 2 He of wire
The original length of wire II 3 can calculate the fusing length of wire I 2 and wire II 3, then covering slag liquid slag layer thickness=
Fusing length-wire I fusing length of wire II.Its theoretical foundation are as follows: Mold temperature 1400~
1500 DEG C, the temperature of covering slag liquid slag layer 4 is 1000~1050 DEG C；Wire I 2 is copper wire, and fusing point is 1083.4 DEG C, between
Between the temperature of covering slag liquid slag layer 4 and the temperature of molten steel 5, wire II is aluminium wire, 660 DEG C of fusing point, is lower than protection slag liquid
The temperature of slag blanket 4, metal bar 1 are the rod iron of the Q235 trade mark, and liquidus curve is 1518~1527 DEG C, higher than the temperature of molten steel 5, are protected
Card will not melt in molten steel again；Top layer is covering slag slag layer 6 in continuous cast mold, centre is covering slag liquid slag layer 4, most bottom
Layer is molten steel 5, and after metal bar 1 is inserted into molten steel and keeps 5~7s, metal bar 1 will not melt；Since wire II 3 is aluminium
Silk, 660 DEG C of fusing point is lower than the temperature of covering slag liquid slag layer 4, so wire II 3 is in covering slag liquid slag layer 4 and molten steel 5
Part be all melted, and due to wire I 2 be copper wire, 1083.4 DEG C of fusing point is between 4 temperature of covering slag liquid slag layer and steel
Between the temperature of liquid 5, so part of the wire I 2 in molten steel 5 will be melted, and the part in covering slag liquid slag layer 4 is not
It can melt；Again since the lower end of wire I 2 and wire II 3 is generally aligned in the same plane, so thickness=gold of covering slag liquid slag layer 4
Belong to fusing length-wire I 2 fusing length of silk II 3.
Claims (4)
1. a kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device, it is characterised in that: including metal bar (1), along metal
The length direction of stick (1) is fixed on wire I (2) and wire II (3) on metal bar (1)；The fusing point of wire I (2) is situated between
Between the temperature of covering slag liquid slag layer (4) and the temperature of molten steel (5), the fusing point of wire II (3) is lower than covering slag liquid slag layer
(4) temperature, the fusing point of metal bar (1) are higher than the temperature of molten steel (5).
2. a kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device as described in claim 1, it is characterised in that: described
Wire I (2) and wire II (3) are axis that is linear and being parallel to metal bar (1), wire I (2) and wire II
(3) lower end is located at approximately the same plane.
3. a kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device as claimed in claim 1 or 2, it is characterised in that:
The wire I (2), wire II (3) length be greater than covering slag slag layer (6), covering slag liquid slag layer (4) and molten steel (5)
The sum of height, the length of the metal bar (1) is greater than the length of wire I (2) or wire II (3).
4. a kind of thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device as claimed in claim 1 or 2, it is characterised in that:
The diameter of the metal bar (1) is 5~10mm, and length is 35~50cm；The diameter of the wire I (2) and wire II (3)
For 1~4mm of Φ, length is 18~25cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051169.4A CN109238091A (en) | 2018-09-10 | 2018-09-10 | Thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051169.4A CN109238091A (en) | 2018-09-10 | 2018-09-10 | Thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109238091A true CN109238091A (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811051169.4A Withdrawn CN109238091A (en) | 2018-09-10 | 2018-09-10 | Thickness of molten slag layer of mold flux of continuous casting crystallizer measuring device |
Country Status (1)
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| CN (1) | CN109238091A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041643A (en) * | 2022-06-24 | 2022-09-13 | 包头钢铁（集团）有限责任公司 | Method for measuring crystallizer liquid slag layer by continuous casting machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109552A (en) * | 1980-12-26 | 1982-07-08 | Kawasaki Steel Corp | Continuous casting method for large sectional ingot |
| JPS61271401A (en) * | 1985-05-28 | 1986-12-01 | Nisshin Steel Co Ltd | Thickness measuring method for molten slag layer |
| CN101097133A (en) * | 2006-06-30 | 2008-01-02 | 宝山钢铁股份有限公司 | Method and apparatus for measuring protection slag thickness in continuous casting crystallizer in |
| CN101666614A (en) * | 2009-10-20 | 2010-03-10 | 北京科技大学 | Device and method for measuring thickness of molten slag layer of mold flux of continuous casting crystallizer |
| CN201684905U (en) * | 2010-06-03 | 2010-12-29 | 首钢总公司 | Device for measuring the thickness of a crystallizer protection slag layer |
-
2018
- 2018-09-10 CN CN201811051169.4A patent/CN109238091A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109552A (en) * | 1980-12-26 | 1982-07-08 | Kawasaki Steel Corp | Continuous casting method for large sectional ingot |
| JPS61271401A (en) * | 1985-05-28 | 1986-12-01 | Nisshin Steel Co Ltd | Thickness measuring method for molten slag layer |
| CN101097133A (en) * | 2006-06-30 | 2008-01-02 | 宝山钢铁股份有限公司 | Method and apparatus for measuring protection slag thickness in continuous casting crystallizer in |
| CN101666614A (en) * | 2009-10-20 | 2010-03-10 | 北京科技大学 | Device and method for measuring thickness of molten slag layer of mold flux of continuous casting crystallizer |
| CN201684905U (en) * | 2010-06-03 | 2010-12-29 | 首钢总公司 | Device for measuring the thickness of a crystallizer protection slag layer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041643A (en) * | 2022-06-24 | 2022-09-13 | 包头钢铁（集团）有限责任公司 | Method for measuring crystallizer liquid slag layer by continuous casting machine |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190118 |
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| WW01 | Invention patent application withdrawn after publication |