CN217474799U - Electroslag heating cap suitable for large-scale flat steel ingot - Google Patents
Electroslag heating cap suitable for large-scale flat steel ingot Download PDFInfo
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- CN217474799U CN217474799U CN202220408566.8U CN202220408566U CN217474799U CN 217474799 U CN217474799 U CN 217474799U CN 202220408566 U CN202220408566 U CN 202220408566U CN 217474799 U CN217474799 U CN 217474799U
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Abstract
An electroslag heating cap suitable for large-scale flat steel ingots belongs to the technical field of steel ingot casting equipment in the metallurgical industry and is used for carrying out electroslag heating on cap openings of the large-scale flat steel ingots. The technical scheme is as follows: the inner hole of the electroslag heating cap opening is matched with an ingot mould which needs electroslag heating, the inner hole wall of the electroslag heating cap opening is laid with high-temperature-resistant and corrosion-resistant bonding materials, the electroslag heating ingot cap opening is formed by welding a rectangular top plate and peripheral side plates, the inner walls of the top plate and the peripheral side plates are laid with high-temperature-resistant and corrosion-resistant bonding materials, the inner hole of the electroslag heating cap opening is matched with the periphery of the electroslag heating cap opening, the upper part of the electroslag heating cap opening is embedded in the inner hole of the electroslag heating cap opening, the top plate of the electroslag heating cap opening is provided with two electrode holes, two sides of each electrode hole are respectively provided with an argon blowing pipe, and the upper end of each argon blowing pipe is connected with an argon blowing hose. The utility model discloses simple structure, convenient to use can bear the erosion of high temperature sediment, long service life to can completely cut off the air effectively, improve the steel ingot quality.
Description
Technical Field
The utility model relates to an electroslag heating cap that excellent in use effect belongs to metallurgical industry steel ingot casting equipment technical field.
Background
The common steel ingot can meet the requirements under most conditions, the larger the weight of the steel ingot is, the longer the solidification time of the steel ingot is, and the more serious the loosening defect of the head of the steel ingot is, one of the methods for improving the loosening of the head of the steel ingot is that a steel ingot heating cap is adopted, the steel ingot heating cap comprises a steel ingot heating cap opening and a steel ingot heating cap opening cover, the steel ingot heating cap can obviously improve the loosening defect above the chest of the steel ingot, a reliable technical means is provided for high-quality low-cost production of large-scale steel ingots, and the obvious effect is achieved. At present, the steel ingot with higher internal quality requirement is produced by electroslag, the loosening state of the steel ingot can be improved by adopting a method of heating the cap opening part of the steel ingot by an electroslag heating cap in the steel ingot production, and the production cost is greatly reduced compared with that of the electroslag method. However, in practical use, the heat insulation plate made of the heat insulation material lined in the common steel ingot heating cap opening is usually made of light materials, has insufficient fire resistance and corrosion resistance, and cannot meet the electroslag heating condition; meanwhile, the common steel ingot heating cap cover has similar effect with the LF refining furnace cover, the LF refining furnace cover usually adopts a water cooling form, but the water cooling electroslag steel ingot heating cap cover equipment is complex, and the heat preservation effect is poor. Therefore, the common thermal insulation cap for steel ingots is not suitable for electroslag heating of the steel ingot cap opening, and it is necessary to develop an electroslag heating cap suitable for electroslag heating of the steel ingot cap opening.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electroslag heating cap suitable for large-scale band steel ingot, during the heating of the lip of this kind of electroslag heating cap, the high temperature resistant erosion-resistant knot material of lining can bear the erosion of high temperature slag, and the lip of electroslag heating cap covers long service life simultaneously, can effectively completely cut off the air, improves the steel ingot quality.
The technical scheme for solving the technical problems is as follows:
an electroslag heating cap suitable for large-scale flat steel ingots comprises an electroslag heating cap opening and an electroslag heating cap opening cover, wherein the electroslag heating cap opening is an annular cuboid formed by cast iron casting, an inner hole of the annular cuboid is matched with an electroslag heated steel ingot mold, a high-temperature-resistant and corrosion-resistant bonding material is laid on the inner hole wall of the annular cuboid of the electroslag heating cap opening, two pairs of cap opening lifting lugs are respectively arranged on two opposite sides of the outside of the annular cuboid, the electroslag heating cap opening cover is of a steel plate structure, the high-temperature-resistant and corrosion-resistant bonding material is laid on the inner wall of the electroslag heating cap opening cover, the lower surface of the electroslag heating cap opening cover is matched with the periphery of the electroslag heating cap opening, the upper part of the electroslag heating cap opening is connected with the lower surface of the electroslag heating cap opening in an embedded mode, two rectangular electrode holes are sequentially arranged on the electroslag heating cap opening cover, and the cross section shape of a consumable electrode used for electroslag heating, the both sides in every electrode hole have respectively and blow the argon pipe, and four blow the argon pipe and pass electroslag heating cap mouth respectively, blow the lower extreme of argon pipe and the lower surface of electroslag heating cap mouth material parallel and level of beating the knot material, blow the upper end of argon pipe and be connected with the argon blowing hose, and the cap mouth lid lug has been welded respectively in the four corners of electroslag heating cap mouth.
According to the electroslag heating cap suitable for the large-scale flat steel ingot, the annular boss is arranged at the bottom of the inner hole of the annular cuboid of the electroslag heating cap opening, the protruding height of the annular boss is the same as the thickness of a bonding material, the annular boss abuts against the lower end face of the bonding material, and the upper end of the bonding material is flush with the upper edge of the annular cuboid of the electroslag heating cap opening.
The electroslag heating cap comprises a rectangular top plate and peripheral side plates, wherein the rectangular top plate and the peripheral side plates are welded, high-temperature-resistant and corrosion-resistant bonding materials are laid on the inner walls of the top plate and the peripheral side plates of the electroslag heating cap, inner holes formed by the peripheral side plates of the electroslag heating cap are matched with the periphery of the electroslag heating cap, and the upper portion of the electroslag heating cap is embedded in the inner holes formed by the peripheral side plates of the electroslag heating cap.
The aforesaid is applicable to the electroslag heating cap of large-scale flat steel ingot, the inboard welding of the lower extreme of curb plate all around of electroslag heating cap lid has horizontally strake steel sheet, strake steel sheet and roof and the curb plate all around between form annular cavity, lay high temperature resistant knot material of nai erosion on electroslag heating cap lid roof below and the curb plate all around and be located annular cavity, and the outside welding of two relative curb plates of electroslag heating cap lid has rectangular steel sheet, and two cap lid lugs have been welded respectively at the both ends of two rectangular steel sheets.
The utility model has the advantages that:
the electroslag heating cap opening of the utility model is cast by cast iron, the lining of the inner wall of the cap opening is provided with high temperature and corrosion resistant bonding materials, the cap opening is placed on a steel ingot mould, the lining of the cap opening is provided with high temperature and corrosion resistant bonding materials to bear the corrosion of high temperature slag when heating, and the boss at the bottom of the inner cavity of the cap opening can prevent the bonding materials from falling; there is the electrode hole on the roof of electroslag heating cap lid and blows the argon pipe, blows the argon pipe and lets in the argon gas when production, can prevent that the air from getting into the cap lid in, the high temperature resistant erosion of cap lid inside lining knot material, the knot material imbeds cap lid limit portion steel sheet all around, can increase the knot material fastness.
The utility model discloses simple structure, convenient to use can bear the erosion of high temperature sediment, long service life to can completely cut off the air effectively, improve the steel ingot quality, be the special electroslag heating cap that the electroslag heating was used, filled the blank that the electroslag heating does not have special steel ingot heating cap, have the value of using widely fabulous in industry.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of a cap for heating electroslag;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic view of the structure of a cap cover heated by electroslag;
fig. 5 is a top view of fig. 4.
The figures are labeled as follows: electroslag heating cap opening 1, electroslag heating cap opening cover 2, ramming material 3, annular boss 4, cap opening lifting lug 5, top plate 6, side plate 7 all around, electrode hole 8, argon blowing pipe 9, strake steel plate 10, cap opening cover lifting lug 11.
Detailed Description
The utility model discloses constitute by electroslag heating cap mouth 1, electroslag heating cap mouth lid 2.
Fig. 1, 2 and 3 show that the electroslag heating cap opening 1 is an annular cuboid cast by cast iron, an inner hole of the annular cuboid is matched with an electroslag heating ingot mould, and when the electroslag heating cap opening 1 is used, the electroslag heating cap opening is placed on the ingot mould.
Fig. 1, 2, 3 show that there is annular boss 4 bottom the annular cuboid hole of electroslag heating cap opening 1, and the interior pore wall of the annular cuboid of electroslag heating cap opening 1 lays high temperature resistant knot material 3 that corrodes, and the thickness of knot material 3 is the same with the protruding height of annular boss 4, and annular boss 4 pushes up the lower terminal surface at knot material 3, and knot material 3 upper end and the annular cuboid upper edge parallel and level of electroslag heating cap opening 1.
Fig. 1, 2 and 3 show that two pairs of cap lifting lugs 5 are respectively arranged on two opposite sides of the outside of the annular cuboid of the electroslag heating cap 1 and used for lifting the electroslag heating cap 1.
Fig. 1, 4 and 5 show that electroslag heating cap cover 2 is of a steel plate structure, and electroslag heating cap cover 2 is formed by welding a rectangular top plate 6 and peripheral side plates 7. The inner walls of the top plate 6 and the peripheral side plates 7 of the electroslag heating cap cover 2 are paved with a high-temperature-resistant and corrosion-resistant bonding material 3, inner holes formed by the peripheral side plates 7 of the electroslag heating cap cover 2 are matched with the periphery of the electroslag heating cap cover 1, and the upper part of the electroslag heating cap cover 1 is embedded in the inner holes formed by the peripheral side plates 7 of the electroslag heating cap cover 2.
Fig. 1, 4, 5 show that the inboard welding of the lower extreme of curb plate 7 all around of electroslag heating cap mouth lid 2 has horizontally strake steel sheet 10, strake steel sheet 10 and roof 6 and curb plate 7 all around between form annular cavity, lay high temperature resistant knot material 3 that corrodes on electroslag heating cap mouth lid 2's roof 6 below and curb plate 7 all around and be located annular cavity, can increase knot material 3's fastness.
Fig. 1, 4, 5 show, two rectangular electrode holes 8 are arranged in order on the length direction of roof 6 of electroslag heating cap lid 2, consumable electrode cross sectional shape phase-match that electrode hole 8 and cap mouth electroslag heating used, there is argon blowing pipe 9 respectively in every electrode hole 8's both sides, four argon blowing pipes 9 pass roof 6 of electroslag heating cap lid 2 respectively, 3 parallel and level of the knot material of the lower extreme of argon blowing pipe 9 and roof 8 lower surface, the upper end of argon blowing pipe 9 is 50~200mm higher than electroslag heating cap lid 2, conveniently with blow the argon hose and be connected.
Fig. 1, 4 and 5 show that strip steel plates are welded on the outer sides of two opposite side plates of the electroslag heating cap cover 2, and two cap cover lifting lugs 11 are welded at the two ends of the two strip steel plates respectively and used for hoisting the electroslag heating cap cover 2.
The utility model discloses an embodiment as follows:
the electroslag heating cap opening 1 is used for a 45t ingot mold, the length of the cap opening is 2700mm, the width is 1600mm, the height is 600mm, the thickness is 300mm, the length of an inner cavity (containing a bonding material 3) is 2100mm, the width (containing the bonding material 3) is 1000mm, and the height of a bottom annular boss 4 is 60mm, and the thickness is 100 mm. After the molten steel is poured, the height of the molten steel surface in the electroslag heating cap opening 1 is 450 mm-500 mm.
In the embodiment, the steel ingot with the weight of 45 tons is cast, the solidification and shrinkage of the cap opening part are good, the internal structure is compactly rolled, and the flaw detection thickness is 200-250 mm, and the steel ingot is qualified according to GB/T2970-2016 (ultrasonic detection method for thick steel plate)' Leve II level. The melting loss of the ramming material on the inner wall of the electroslag heating cap opening is less, and the electroslag heating cap opening can be repeatedly used for many times.
The electroslag heating cap cover 2 is used for a 45t ingot mould, and the cap cover 2 is 2900mm long, 1700mm wide and 250mm thick; the length of the electrode hole 8 is 750mm, the width thereof is 450mm, and the distance between the centers of the two electrode holes is 1000 mm; the thickness of the cap opening cover steel plate is 50mm, the thickness of the ramming material is 3 mm, and the height of the four argon blowing pipes 9 is 60mm higher than the cap opening cover.
In the embodiment, after the steel ingot with the weight of 45 tons is cast, the cap opening is heated by electroslag, the cap opening is good in solidification and shrinkage, and the internal structure is compact; electroslag heating cap lid 2 can use repeatedly for a long time, and electroslag heating cap lid 2 is effectual to isolated air. The pass rate of flaw detection with the rolling thickness of 200-250 mm is 99.6 percent according to the level of Leve II of GB/T2970-2016 ultrasonic detection method for thick steel plates.
Claims (4)
1. The electroslag heating cap suitable for large-sized flat steel ingots is characterized in that: the electroslag heating electrode cap comprises an electroslag heating cap opening (1) and an electroslag heating cap opening cover (2), wherein the electroslag heating cap opening (1) is an annular cuboid formed by cast iron, an inner hole of the annular cuboid is matched with an electroslag die, a high-temperature-resistant and corrosion-resistant bonding material (3) is laid on the inner hole wall of the annular cuboid of the electroslag heating cap opening (1), two pairs of cap opening lifting lugs (5) are respectively arranged on two opposite sides of the outside of the annular cuboid, the electroslag heating cap opening cover (2) is of a steel plate structure, the high-temperature-resistant and corrosion-resistant bonding material (3) is laid on the inner wall of the electroslag heating cap opening cover (2), the lower surface of the electroslag heating cap opening cover (2) is matched with the periphery of the electroslag heating cap opening (1), the upper part of the electroslag heating cap opening (1) is connected with the lower surface of the electroslag heating cap opening cover (2) in an embedded mode, two rectangular holes (8) are sequentially arranged on the electroslag heating cap opening cover (2), consumable electrode cross sectional shape phase-match that electrode hole (8) and cap mouth electroslag heating used, the both sides of every electrode hole (8) have respectively blow argon pipe (9), four blow argon pipe (9) pass electroslag heating cap mouth lid (2) respectively, blow the lower extreme of argon pipe (9) and the break-out material (3) parallel and level of electroslag heating cap mouth lid (2) lower surface, the upper end of blowing argon pipe (9) is connected with the argon blowing hose, cap mouth lid lug (11) have been welded respectively in the four corners of electroslag heating cap mouth lid (2).
2. An electroslag heating cap suitable for large slabs according to claim 1, wherein: there is annular boss (4) bottom the annular cuboid hole of electroslag heating cap mouth (1), and the protruding height of annular boss (4) is the same with the thickness of knot material (3), and annular boss (4) top is at the lower terminal surface of knot material (3), and knot material (3) upper end and the annular cuboid upper edge parallel and level of electroslag heating cap mouth (1).
3. An electroslag heating cap suitable for large slabs according to claim 1, wherein: electroslag heating cap mouth (2) comprises rectangle roof (6) and curb plate (7) welding all around, lays high temperature resistant material of beating (3) of corroding on roof (6) of electroslag heating cap mouth (2) and the inner wall of curb plate (7) all around, the hole that curb plate (7) formed all around of electroslag heating cap mouth (2) and the periphery phase-match of electroslag heating cap mouth (1), the upper portion of electroslag heating cap mouth (1) is inlayed in the hole that curb plate (7) formed all around of electroslag heating cap mouth (2) formed.
4. An electroslag heating cap suitable for large slabs according to claim 3, wherein: the inboard welding of lower extreme of curb plate (7) all around of electroslag heating cap lid (2) has horizontally strake steel sheet (10), strake steel sheet (10) and roof (6) and curb plate (7) all around between form annular cavity, lay high temperature resistant knot material (3) of corroding on roof (6) below of electroslag heating cap lid (2) and curb plate (7) all around and be located annular cavity, the outside welding of two relative curb plates of electroslag heating cap lid (2) has rectangular steel sheet, the both ends of two rectangular steel sheets weld respectively has two cap lid lugs (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220408566.8U CN217474799U (en) | 2022-02-28 | 2022-02-28 | Electroslag heating cap suitable for large-scale flat steel ingot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220408566.8U CN217474799U (en) | 2022-02-28 | 2022-02-28 | Electroslag heating cap suitable for large-scale flat steel ingot |
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| Publication Number | Publication Date |
|---|---|
| CN217474799U true CN217474799U (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220408566.8U Active CN217474799U (en) | 2022-02-28 | 2022-02-28 | Electroslag heating cap suitable for large-scale flat steel ingot |
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| CN (1) | CN217474799U (en) |
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- 2022-02-28 CN CN202220408566.8U patent/CN217474799U/en active Active
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