CN213729232U - Steel thermal-insulating cap for pouring large steel ingot - Google Patents
Steel thermal-insulating cap for pouring large steel ingot Download PDFInfo
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- CN213729232U CN213729232U CN202021604708.5U CN202021604708U CN213729232U CN 213729232 U CN213729232 U CN 213729232U CN 202021604708 U CN202021604708 U CN 202021604708U CN 213729232 U CN213729232 U CN 213729232U
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Abstract
The utility model relates to a steel heat preservation cap of large-scale steel ingot of pouring belongs to metallurgical industry steel ingot pouring equipment technical field. The technical scheme is as follows: the four heat preservation cap inner steel plates are welded together to form a heat preservation cap inner cavity with a small upper part and a big lower part, and the four heat preservation cap outer steel plates are welded together to form a heat preservation cap shell; a plurality of rib plates which are uniformly distributed are arranged between the inner steel plate of the heat preservation cap and the outer steel plate of the heat preservation cap, the upper steel plate of the heat preservation cap is welded at the upper ends of the four inner steel plates of the heat preservation cap and the four outer steel plates of the heat preservation cap, and the bottom steel plate of the heat preservation cap is welded at the lower ends of the four inner steel plates of the heat preservation cap and the four outer steel plates of the heat preservation cap; and refractory fibers are filled in cavities among the steel plate at the inner layer of the heat preservation cap, the steel plate at the outer layer of the heat preservation cap and the steel plate at the bottom of the heat preservation cap. The utility model has the advantages that: the heat-insulating refractory material is arranged in the hat opening, so that the heat-insulating effect of the hat opening is improved.
Description
Technical Field
The utility model relates to a steel heat preservation cap of large-scale steel ingot of pouring belongs to metallurgical industry steel ingot pouring equipment technical field.
Background
The heat-insulating cap is ingot casting equipment for performing heat insulation and heat preservation on the molten steel at the head of the killed steel ingot. The heat preservation cap is generally formed by casting cast iron, has the thickness of 120-180 mm, and is used after the heat preservation cap is lined with a heat insulation plate on the inner wall. The heat insulation plate is made of light or siliceous heat insulation materials and is 40-70 mm thick. In the later solidification stage of molten steel, the temperature of the outer side of the heat-insulating cap reaches 200-300 ℃, and a large amount of heat is dissipated from the outer wall of the opening of the cap, so that the quality of a steel ingot is influenced to a certain extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steel heat preservation cap of large-scale steel ingot of pouring adopts the steel sheet welding to form, and built-in heat preservation refractory material improves the effect that keeps warm of hat opening moreover, solves the problem that exists among the background art.
The technical scheme of the utility model is that:
a steel thermal cap for pouring large-scale steel ingots comprises a thermal cap inner cavity, a thermal cap upper surface steel plate, a thermal cap inner layer steel plate, a thermal cap outer layer steel plate, a thermal cap bottom steel plate, refractory fibers and rib plates, wherein the thermal cap inner layer steel plate and the thermal cap outer layer steel plate are rectangular steel plates, the four thermal cap inner layer steel plates are welded together to form a thermal cap inner cavity with a small upper part and a large lower part, and the four thermal cap outer layer steel plates are welded together to form a thermal cap shell; a plurality of rib plates which are uniformly distributed are arranged between the inner steel plate of the heat preservation cap and the outer steel plate of the heat preservation cap, the upper steel plate of the heat preservation cap is welded at the upper ends of the four inner steel plates of the heat preservation cap and the four outer steel plates of the heat preservation cap, the bottom steel plate of the heat preservation cap is welded at the lower ends of the four inner steel plates of the heat preservation cap and the four outer steel plates of the heat preservation cap, an opening which is matched with the upper end of the inner cavity of the heat preservation cap is arranged on the upper steel plate of the heat preservation cap, and an opening which is matched with the lower end of the inner cavity of the heat preservation cap is arranged on the bottom steel plate of the heat preservation cap; a closed cavity is formed among the upper steel plate of the heat preservation cap, the inner steel plate of the heat preservation cap, the outer steel plate of the heat preservation cap and the bottom steel plate of the heat preservation cap, and the cavity is filled with refractory fibers.
The four insulation cap outer layer steel plates are welded together to form an insulation cap shell, and the insulation cap shell is provided with symmetrically arranged lifting lugs.
The lifting lug penetrates through the outer steel plate of the heat-insulating cap and the fireproof fiber to be fixedly connected with the outer side surface of the inner steel plate of the heat-insulating cap.
And the four insulation cap outer layer steel plates of the insulation cap shell are respectively provided with air holes which are uniformly distributed.
The diameters of the air holes uniformly distributed on the four heat preservation cap outer layer steel plates of the heat preservation cap shell are 10 mm-40 mm.
The interval between the steel plate on the inner layer of the heat-preservation cap and the steel plate on the outer layer of the heat-preservation cap is 60 mm-120 mm.
The utility model has the advantages that: the utility model discloses the heat preservation cap adopts the steel sheet welding to form, and the built-in fire resistant fiber insulation material of heat preservation cap. When the heat-insulating cap is used, the heat-insulating plate is lined on the inner cavity wall of the heat-insulating cap, after molten steel enters the cap opening, heat is transferred to the inner steel plate of the heat-insulating cap through the heat-insulating plate and is slowly transferred to the outer steel plate of the heat-insulating cap through refractory fibers, so that a better heat-insulating effect is achieved, and the quality of steel ingots is improved; in addition, the thermal insulation cap is formed by welding steel plates, so that the thermal insulation cap is easy to repair after being damaged, and the production cost is reduced.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
in the figure: the heat preservation cap comprises a heat preservation cap inner cavity 1, a heat preservation cap upper surface steel plate 2, a heat preservation cap inner layer steel plate 3, a heat preservation cap outer layer steel plate 4, a heat preservation cap bottom steel plate 5, refractory fibers 6, lifting lugs 7, air holes 8 and rib plates 9.
Detailed Description
The invention will be further explained by way of example with reference to the accompanying drawings.
Referring to attached figures 1-3, the steel heat preservation cap for pouring large-scale steel ingots comprises a heat preservation cap inner cavity 1, a heat preservation cap upper surface steel plate 2, a heat preservation cap inner layer steel plate 3, a heat preservation cap outer layer steel plate 4, a heat preservation cap bottom steel plate 5, refractory fibers 6 and rib plates 9, wherein the heat preservation cap inner layer steel plate 3 and the heat preservation cap outer layer steel plate 4 are rectangular steel plates, the four heat preservation cap inner layer steel plates 3 are welded together to form the heat preservation cap inner cavity 1 with a small upper part and a large lower part, and the four heat preservation cap outer layer steel plates 4 are welded together to form a heat preservation cap shell; a plurality of rib plates 9 which are uniformly distributed are arranged between the heat preservation cap inner layer steel plate 3 and the heat preservation cap outer layer steel plate 4, the heat preservation cap upper surface steel plate 2 is welded at the upper ends of the four heat preservation cap inner layer steel plates 3 and the four heat preservation cap outer layer steel plates 4, the heat preservation cap bottom steel plate 5 is welded at the lower ends of the four heat preservation cap inner layer steel plates 3 and the four heat preservation cap outer layer steel plates 4, an opening which is matched with the upper end of the heat preservation cap inner cavity 1 is arranged on the heat preservation cap upper surface steel plate 2, and an opening which is matched with the lower end of the heat preservation cap inner cavity 1 is arranged on the heat preservation cap bottom steel plate 5; a closed cavity is formed among the upper steel plate 2 of the heat preservation cap, the inner steel plate 3 of the heat preservation cap, the outer steel plate 4 of the heat preservation cap and the bottom steel plate 5 of the heat preservation cap, and the cavity is filled with refractory fibers 6.
In this embodiment, referring to fig. 1-3, the cuboid-shaped thermal insulation cap is formed by connecting four thermal insulation cap inner layer steel plates 3 end to form a cuboid inner cavity 1, the upper part of the inner cavity is small and the lower part of the inner cavity is large, and the inner cavity adopts the design of the upper part being small and the lower part being large, so that the thermal insulation cap can smoothly descend when the steel ingot is solidified and contracted to descend, and cracks are avoided.
The four outer steel plates 4 of the heat preservation cap are connected together end to form a shell of the heat preservation cap.
The upper steel plate 2 of the heat preservation cap is connected with the upper parts of the inner steel plate 3 of the heat preservation cap and the four outer steel plates 4 of the heat preservation cap, the size of the inner cavity of the upper steel plate corresponds to that of the inner steel plate 3 of the heat preservation cap, and the size of the edge of the upper steel plate corresponds to that of the edge of the outer steel plate 4 of the heat preservation cap.
The bottom steel plate 5 of the heat preservation cap is connected with the lower parts of the inner steel plate 3 of the heat preservation cap and the four outer steel plates 4 of the heat preservation cap, the size of the inner cavity of the bottom steel plate corresponds to that of the inner steel plate 3 of the heat preservation cap, and the size of the edge of the bottom steel plate corresponds to that of the edge of the outer steel plate 4 of the heat preservation cap.
A closed cavity is formed by an upper steel plate 2 of the heat preservation cap, an inner steel plate 3 of the heat preservation cap, an outer steel plate 4 of the heat preservation cap and a bottom steel plate 5 of the heat preservation cap, and is filled with refractory fibers 6.
The thickness of the steel plate 3 on the inner layer of the heat preservation cap is 40 mm-100 mm, heat transmitted by molten steel on the cap opening of the steel ingot can be absorbed less, and heat preservation of the cap opening is facilitated. The upper surface of the heat preservation cap is provided with a steel plate 2 mm-40 mm thick, the bottom of the heat preservation cap is provided with a steel plate 5 mm-60 mm thick, and the outer layer of the heat preservation cap is provided with a steel plate 4 mm-50 mm thick.
The interval between the steel plate 3 on the inner layer of the heat preservation cap and the steel plate 4 on the outer layer of the heat preservation cap is 60 mm-120 mm, and the heat preservation cap is filled with refractory fibers 6. The thickness of the rib plate 9 between the steel plate 3 at the inner layer of the heat preservation cap and the steel plate 4 at the outer layer of the heat preservation cap is 20 mm-30 mm.
The outer steel sheet 4 of four block heat preservation caps has a plurality of bleeder vents 8 that run through, and its diameter is 10mm ~40mm, the effect is gaseous the spilling over after placing the space temperature rise of refractory fiber 6 during the casting.
The heat preservation cap of the embodiment is a 45-ton large steel flat ingot heat preservation cap, and the upper opening of the inner cavity 1 of the heat preservation cap is 1930mm long and 940mm wide, and the lower opening is 1950mm long and 960mm wide and 600mm high. The thickness of the steel plate at the inner layer of the heat preservation cap is 3 mm and 80mm, the thickness of the steel plate at the outer layer of the heat preservation cap is 4 mm and 30mm, the thickness of the steel plate at the upper surface of the heat preservation cap is 2 mm and 30mm, the thickness of the steel plate at the bottom of the heat preservation cap is 5 mm and 50mm, the thickness of the refractory fiber is 6 mm and 80mm, and the diameter of the air.
When in use, the heat insulation plate with the thickness of 50mm is arranged in the inner steel plate 3 of the heat insulation cap and then is placed on the die orifice of the ingot mould with the thickness of 45 t.
Adopt the utility model discloses the 45t steel slab of pouring finishes to the period of solidifying, and the temperature measurement of heat preservation cap outside steel sheet is 100~200 ℃ lower than ordinary cap mouth temperature. The upper surface of the steel ingot cap opening is gentle from the edge part to the center, and the heat preservation effect is better than that of a common cap opening. The flaw detection qualification rate of the cast steel ingot is improved by 0.85 percent after rolling.
Claims (6)
1. A steel thermal-insulating cap for pouring large steel ingots is characterized in that: the heat preservation cap comprises a heat preservation cap inner cavity (1), a heat preservation cap upper surface steel plate (2), a heat preservation cap inner layer steel plate (3), a heat preservation cap outer layer steel plate (4), a heat preservation cap bottom steel plate (5), refractory fibers (6) and rib plates (9), wherein the heat preservation cap inner layer steel plate (3) and the heat preservation cap outer layer steel plate (4) are rectangular steel plates, the four heat preservation cap inner layer steel plates (3) are welded together to form the heat preservation cap inner cavity (1) with a small upper part and a large lower part, and the four heat preservation cap outer layer steel plates (4) are welded together to form a heat preservation cap shell; a plurality of rib plates (9) which are uniformly arranged are arranged between the heat preservation cap inner layer steel plate (3) and the heat preservation cap outer layer steel plate (4), the heat preservation cap upper surface steel plate (2) is welded at the upper ends of the four heat preservation cap inner layer steel plates (3) and the four heat preservation cap outer layer steel plates (4), the heat preservation cap bottom steel plate (5) is welded at the lower ends of the four heat preservation cap inner layer steel plates (3) and the four heat preservation cap outer layer steel plates (4), an opening matched with the upper end of the heat preservation cap inner cavity (1) is formed in the heat preservation cap upper surface steel plate (2), and an opening matched with the lower end of the heat preservation cap inner cavity (1) is formed in the heat preservation cap bottom steel plate (5); a closed cavity is formed among the upper steel plate (2) of the heat preservation cap, the inner steel plate (3) of the heat preservation cap, the outer steel plate (4) of the heat preservation cap and the bottom steel plate (5) of the heat preservation cap, and the cavity is filled with refractory fibers (6).
2. The steel thermal cap for pouring large steel ingots according to claim 1, wherein: the four insulation cap outer layer steel plates (4) are welded together to form an insulation cap shell, and the insulation cap shell is provided with symmetrically arranged lifting lugs (7).
3. The steel thermal cap for pouring large steel ingots according to claim 2, wherein: the lifting lugs (7) penetrate through the outer steel plate (4) of the thermal insulation cap and the refractory fibers (6) to be fixedly connected with the outer side surface of the inner steel plate (3) of the thermal insulation cap.
4. The steel thermal cap for casting large steel ingots according to claim 1 or 2, wherein: the four insulating cap outer layer steel plates (4) of the insulating cap shell are respectively provided with air holes (8) which are uniformly distributed.
5. The steel thermal cap for pouring large steel ingots according to claim 4, wherein: the diameters of the air holes (8) uniformly distributed on the four heat preservation cap outer layer steel plates (4) of the heat preservation cap shell are 10 mm-40 mm.
6. The steel thermal cap for pouring large steel ingots according to claim 1, wherein: the interval between the heat preservation cap inner layer steel plate (3) and the heat preservation cap outer layer steel plate (4) is 60 mm-120 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021604708.5U CN213729232U (en) | 2020-08-05 | 2020-08-05 | Steel thermal-insulating cap for pouring large steel ingot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021604708.5U CN213729232U (en) | 2020-08-05 | 2020-08-05 | Steel thermal-insulating cap for pouring large steel ingot |
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| CN213729232U true CN213729232U (en) | 2021-07-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319034A (en) * | 2022-08-18 | 2022-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Ferrovanadium alloy casting ingot mold and preparation method thereof |
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2020
- 2020-08-05 CN CN202021604708.5U patent/CN213729232U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319034A (en) * | 2022-08-18 | 2022-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Ferrovanadium alloy casting ingot mold and preparation method thereof |
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