CN201793689U - Novel backing plate of slab in electroslag remelting process - Google Patents
Novel backing plate of slab in electroslag remelting process Download PDFInfo
- Publication number
- CN201793689U CN201793689U CN2010205412096U CN201020541209U CN201793689U CN 201793689 U CN201793689 U CN 201793689U CN 2010205412096 U CN2010205412096 U CN 2010205412096U CN 201020541209 U CN201020541209 U CN 201020541209U CN 201793689 U CN201793689 U CN 201793689U
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- base plate
- crystallizer
- backing plate
- bottom pad
- edge
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Abstract
The utility model provides a novel backing plate of a slab in electroslag remelting process, which comprises a base plate with a slag injection port and a bolt hole. The utility model is characterized in that the slag injection port is formed at one end of the base plate, and a triangular prism-shaped or a trapezoid-shaped protrusion is arranged on the upper surface of the other end of the base plate. The utility model has simple structure and reasonable design, increases the thickness of the backing plate to a large extent, ensures the high-temperature strength of the backing plate to avoid deformation, ensures the uniform flow of the electric current through the whole backing plate, substantially eliminates the concentration problem of electric current density, achieves the effective contact of the fusion-casting molten steel and the backing plate, and prevents the cast ingot against crystallization and segregation.
Description
Technical field
The utility model belongs to the electroslag remelting technique field of ferrous metallurgy aspect, particularly a kind ofly is used for the remelting bottom pad plate that esr large-tonnage slab is used.
Background technology
There are very big difference in esr heavy slab and remelting circle base and special-shaped base, its cross section of esr circle base is even, and relative cylinder charge is big, and whole ingot shape is less than normal, substantially all in 10t, the remelting time is short relatively, and its sectional dimension difference of esr heavy slab is big, and flakiness ratio is bigger, can reach 5～20, round relatively base, relative cylinder charge is little, and whole ingot shape is bigger than normal, substantially all more than 10t, even up to 200t, the remelting time is long relatively, even reach 100h, the remelting heavy slab needs high-voltage, can be up to 100V, big electric current is up to 30000A.Therefore, very big by the current density of bottom pad plate, require bottom pad plate to contact well with water tank at the bottom of the crystallizer, bottom pad plate contacts well with resmelting ingot.Because the heavy slab flakiness ratio is bigger, there are two problems, the first, at the remelting initial stage, around bottom pad plate and the crystallizer all is cold conditions, when the remelting slag is annotated into, can solidify away from annotating cinder notch and crystallizer cold slag on every side, in reflow process, this layer solid slag can not melt yet, so just reduced the conductive area between bottom pad plate and the resmelting ingot, thus more XXL the current density of other conducting positions, can influence the crystal structure of chemical ingredients and resmelting ingot like this.The second, because bottom pad plate is thinner, resmelting ingot can produce convergent force in process of setting, cause smooth bottom pad plate distortion, influence bottom pad plate with the contact area between the end water tank, also can cause other contact site current densities much, influence the crystal structure of chemical ingredients and resmelting ingot.Therefore, must develop novel bottom pad plate, solve above-mentioned two problems.
The utility model content
The purpose of this utility model is to overcome existing in prior technology the problems referred to above, and a kind of novel bottom pad plate that is used for the esr slab that can reduce the chemical ingredients scaling loss and solve the crystallization skew problem is provided.
The technical solution adopted in the utility model is as follows:
This novel bottom pad plate that is used for the esr slab comprises and has the base plate of annotating cinder notch and bolt hole, is characterized in that described notes cinder notch is opened in an end of base plate, also has a triangular prism or trapezoidal terrace with edge at the upper surface of the base plate the other end.
The thickness that the utility model is used for the described base plate of novel bottom pad plate of esr slab is 30～50mm, and its shape is identical with mold shape, and size is than the big 100～200mm of crystallizer; A surface of described triangular prism is connected with base plate, its width is than the little 40～100mm of crystallizer width, its length two ends are respectively apart from crystallizer end limit with annotate each 20～50mm of cinder notch external diameter, and described triangular prism triangular cross section summit is to the minimum 50mm of base height, rise slag liquid level upper edge 60mm; The following basal surface of described trapezoidal terrace with edge is connected with base plate, its width is than the little 40～100mm of crystallizer width, its length two ends are respectively apart from crystallizer end limit and each 20～50mm of notes cinder notch external diameter, the minimum 50mm of the described trapezoidal height of trapezoidal terrace with edge cross section, rise slag liquid level upper edge 60mm, the width of end face is less than 100mm on the described trapezoidal terrace with edge.
The utility model is simple in structure, reasonable in design, on big area very, increased the thickness of bottom pad plate, guaranteed the hot strength of bottom pad plate, thereby can not deform, guarantee the electric current whole bottom pad plate of flowing through equably, basically eliminate the current density concentration problem, the molten steel and the effective of bottom pad plate that have guaranteed founding simultaneously contact, and have solved ingot casting coring problem.
Description of drawings
Accompanying drawing 1 has the front view of triangular prism for the utility model embodiment 1.
Accompanying drawing 2 is the side-view of accompanying drawing 1.
Accompanying drawing 3 is the vertical view of accompanying drawing 1.
Accompanying drawing 4 has the front view of trapezoidal terrace with edge for the utility model embodiment 2.
Accompanying drawing 5 is the side-view of accompanying drawing 4.
Accompanying drawing 6 is the vertical view of accompanying drawing 4.
1 is base plate among the figure, and 2 is bolt hole, and 3 for annotating cinder notch, and 4 is triangular prism, and 5 is trapezoidal terrace with edge.
Embodiment
The utility model will be further described with reference to the accompanying drawings.
From accompanying drawing as can be seen, the utility model is mainly combined by base plate 1 and triangular prism 4 or trapezoidal terrace with edge 5.Base plate 1 and triangular prism 4 or trapezoidal terrace with edge 5 are one-piece construction, can direct whole machining form or are welded.End at base plate 1 offers circular notes cinder notch 3, and this annotates cinder notch 3 should annotate cinder notch with directly concentric with end water tank.Have several bolts hole 2 on the both sides of base plate 1, be connected with crystallizer to make bottom pad plate by bolt.The thickness of base plate 1 is 30～50mm, and its shape is identical with crystallizer, but size is than the big 100～200mm of crystallizer.
The shape of triangular prism 4 described in the utility model will be determined by the height in crystallization according to mold shape and slag, one surface is connected with the upper surface of base plate 1, this connection surface is of a size of: width is than the little 40～100mm of crystallizer width, length depends on crystallizer and annotates the size of cinder notch 3, i.e. end distance crystallizer end limit a 20～50mm, the other end is apart from annotating cinder notch external diameter 20～50mm.The summit, trilobal(cross)section of triangular prism 4 determines that according to annotating the quantity of slag for guaranteeing above-mentioned effect and security, its highly minimum 50mm that is not less than is up to few apart from slag liquid level upper edge 60mm to the height on base.
The shape of trapezoidal terrace with edge 5 described in the utility model will be determined by the height in crystallization according to crystal form and slag, basal surface is connected with base plate 1 under it, this connection surface is of a size of: width is than the little 40～100mm of crystallizer width, length depends on crystallizer and annotates the size of cinder notch 3, i.e. end distance crystallizer end limit a 20～50mm, the other end is apart from annotating cinder notch external diameter 20～50mm.The trapezoid cross section height of trapezoidal terrace with edge 5 determines that according to annotating the quantity of slag for guaranteeing above-mentioned effect and security, its highly minimum 50mm that is not less than is up to few apart from slag liquid level upper edge 60mm.The trapezoidal end face width of going up of trapezoidal terrace with edge 5 is less than 100mm.
When esr is reorganized and outfit, adopt the utility model novel bottom pad plate as depicted in figs. 1 and 2, the resmelting ingot cross dimensions is 340mm * 1350mm, and reflow process does not adopt gas shield, and the comparative result of its implementation result and common bottom pad plate (Comparative Examples) sees Table 1.
The result of use of table 1 the utility model bottom pad plate
| Als scaling loss amount % | Si scaling loss amount % | The nucleus of crystal skew | Bottom pad plate and ingot | |
| Embodiment | ||||
| 1 | ?0.010 | 0.02 | Non-migration | Do not have |
| |
?0.012 | 0.03 | Non-migration | Do not have |
| Comparative Examples 1 | ?0.020 | 0.10 | Skew 100mm | Away from annotating the cinder notch place is 5mm |
| Comparative Examples 2 | ?0.023 | 0.12 | Skew 120mm | Away from annotating the cinder notch place is 6mm |
Claims (4)
1. novel bottom pad plate that is used for the esr slab comprises having the base plate of annotating cinder notch and bolt hole, it is characterized in that described notes cinder notch is opened in an end of base plate, also has a triangular prism or trapezoidal terrace with edge at the upper surface of the base plate the other end.
2. novel bottom pad plate according to claim 1, the thickness that it is characterized in that described base plate is 30～50mm, and its shape is identical with mold shape, and size is than the big 100～200mm of crystallizer.
3. novel bottom pad plate according to claim 1, a surface that it is characterized in that described triangular prism is connected with base plate, its width is than the little 40～100mm of crystallizer width, its length two ends are respectively apart from crystallizer end limit and each 20～50mm of notes cinder notch external diameter, described triangular prism triangular cross section summit is to the minimum 50mm of height on base, rise slag liquid level upper edge 60mm.
4. novel bottom pad plate according to claim 1, the following basal surface that it is characterized in that described trapezoidal terrace with edge is connected with base plate, its width is than the little 40～100mm of crystallizer width, its length two ends are respectively apart from crystallizer end limit and each 20～50mm of notes cinder notch external diameter, the minimum 50mm of described trapezoidal terrace with edge trapezoidal cross-section height, rise slag liquid level upper edge 60mm, the width of end face is less than 100mm on the described trapezoidal terrace with edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205412096U CN201793689U (en) | 2010-09-21 | 2010-09-21 | Novel backing plate of slab in electroslag remelting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205412096U CN201793689U (en) | 2010-09-21 | 2010-09-21 | Novel backing plate of slab in electroslag remelting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201793689U true CN201793689U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205412096U Expired - Fee Related CN201793689U (en) | 2010-09-21 | 2010-09-21 | Novel backing plate of slab in electroslag remelting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201793689U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140369386A1 (en) * | 2013-06-18 | 2014-12-18 | Stmicroelectronics S.R.I. | Electronic device with integrated temperature sensor and manufacturing method thereof |
| CN111394592A (en) * | 2020-04-20 | 2020-07-10 | 中南大学 | Method for reducing copper content in smelting slag |
-
2010
- 2010-09-21 CN CN2010205412096U patent/CN201793689U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140369386A1 (en) * | 2013-06-18 | 2014-12-18 | Stmicroelectronics S.R.I. | Electronic device with integrated temperature sensor and manufacturing method thereof |
| US9976914B2 (en) * | 2013-06-18 | 2018-05-22 | Stmicroelectronics S.R.L. | Electronic device with integrated temperature sensor and manufacturing method thereof |
| US10682645B2 (en) | 2013-06-18 | 2020-06-16 | Stmicroelectronics S.R.L. | Electronic device with integrated temperature sensor and manufacturing method thereof |
| CN111394592A (en) * | 2020-04-20 | 2020-07-10 | 中南大学 | Method for reducing copper content in smelting slag |
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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: 20110413 Termination date: 20160921 |