CN102990018A - Slow-condensing interface structure for crystallizer for cast iron horizontal continuous casting and heat preserving furnace - Google Patents
Slow-condensing interface structure for crystallizer for cast iron horizontal continuous casting and heat preserving furnace Download PDFInfo
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- CN102990018A CN102990018A CN2012105211809A CN201210521180A CN102990018A CN 102990018 A CN102990018 A CN 102990018A CN 2012105211809 A CN2012105211809 A CN 2012105211809A CN 201210521180 A CN201210521180 A CN 201210521180A CN 102990018 A CN102990018 A CN 102990018A
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Abstract
The invention discloses a slow-condensing interface structure for a crystallizer for cast iron horizontal continuous casting and a heat preserving furnace. A hearth is arranged in the heat preserving furnace, a graphite sleeve is arranged in the crystallizer, and an end part of the graphite sleeve connected with the hearth is covered with a refractory layer with a horn opening. The structure disclosed by the invention has the advantages that after the structure is adopted, as the end part of the graphite sleeve is covered with a refractory layer with a horn opening, and the upper edge coverage width is larger than the lower edge coverage width, a part of the graphite sleeve exposed out of the lower edge of the graphite sleeve is larger than that exposed out of the upper edge of the graphite sleeve, and graphite around the inner hole of the graphite sleeve is exposed. In such a way, molten iron can preheat the molten iron inlet end part of the graphite sleeve, especially the end part of the lower edge of the graphite sleeve, so that the molten iron after entering the inlet end of the graphite sleeve is uneasy to produce condensate iron, therefore, the scab and crack defects of profiles are lowered, a defect that coarse edges are produced as graphite scratches profiles is reduced, the slag clamping defects of profiles are reduced, and the section uniformity of profiles is greatly increased, so that the quality problems of profiles are reduced, and the rate of finished products of profiles is improved.
Description
Technical field
The present invention relates to the retardation setting type interface structure of a kind of cast iron horizontal continuous caster crystallizer and holding furnace.
Background technology
At present, in the production practices of cast iron profile material horizontal casting, crystallizer molten iron arrival end and holding furnace joint are generally made graphite cannula and are stretched out certain-length, and remainder is made the pass consistent with hole shape in the graphite cannula with refractory material and docked assembling with holding furnace.Although this structure can satisfy need of production, but because the refractory material composition section has hindered the pre-heat effect of molten iron to crystallizer graphite arrival end, make molten iron before entering crystallizer graphite cannula die cavity, namely produce solidifying iron, and bond with refractory material, form convex closure when serious, blocking the molten iron passage, is to produce normally to carry out.The problem that this structure is especially being produced small section and mainly existed: section bar scabs greatly, deeply; The section bar crackle is many; The section bar slag inclusion is many; The crystallizer graphite cannula easily scratches, and section bar hair rib is serious.Cause the section bar poor product quality, the section bar yield rate is lower.
Summary of the invention
The present invention proposes a kind of cast iron horizontal continuous caster crystallizer and holding furnace retardation setting type interface structure, and it has effectively solved refractory material and has hindered the problem of molten iron to the preheating of graphite cannula arrival end, and the quality problems of section bar are greatly reduced, and the section bar yield rate promotes greatly.
Technical scheme of the present invention is achieved in that the retardation setting type interface structure of a kind of cast iron horizontal continuous caster crystallizer and holding furnace, be provided with burner hearth in the described holding furnace, be provided with graphite cannula in the described crystallizer, described graphite cannula is coated with the flame retardant coating of horn opening in the end that is connected with burner hearth.
As preferably, described flame retardant coating covers the outside, graphite cannula end, and graphite cannula endoporus upper edge graphite area coverage is greater than lower edge graphite area coverage.
As preferably, described crystallizer is connected with wedge by the quick change plate with holding furnace.
As preferably, be welded with fixed frame on the described quick change plate.
As preferably, described flame retardant coating is to be formed by the space-filling refractory material that graphite cannula end, quick change plate, fixed frame surround.
As preferably, described crystallizer comprises forward flange, rear flange and baffle plate, and described forward flange and baffle plate are bolted to connection.
As preferably, described rear flange and quick change plate are bolted to connection.
Beneficial effect of the present invention is: after adopting said structure, owing to be coated with the flame retardant coating of horn opening in the graphite cannula end, and the upper edge cover width is greater than the lower edge cover width, so the graphite cannula that expose graphite cannula lower edge part is more than the upper edge, graphite cannula endoporus periphery graphite is exposed.So molten iron can preheating graphite cannula molten iron entrance end, especially end, graphite cannula lower edge, molten iron enters the arrival end of graphite cannula, be difficult for to produce solidifying iron, greatly reduce that section bar scabs, crack defect, greatly reduced because of graphite and scratch the defective that section bar produces the hair rib, greatly reduced the section bar dreg defect, the section material section uniformity significantly promotes, and the quality problems of section bar are greatly reduced, and the section bar yield rate promotes greatly.
Description of drawings
In order to be illustrated more clearly in embodiment of the invention technical scheme, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is that the present invention is in order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the planar structure schematic diagram of the embodiment of the invention;
Fig. 2 is the sectional view of A-A among Fig. 1.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As depicted in figs. 1 and 2, a kind of cast iron horizontal continuous caster crystallizer and holding furnace retardation setting type interface structure, be provided with burner hearth 4 in the described holding furnace 2, be provided with graphite cannula 6 in the described crystallizer 1, described graphite cannula 6 is coated with the flame retardant coating 3 of horn opening in the end that is connected with burner hearth 4.Described flame retardant coating 3 covers the outside, graphite cannula 6 ends, and graphite cannula 6 endoporus upper edge graphite area coverages are greater than lower edge graphite area coverage, in the present embodiment, described crystallizer 1 is connected by quick change plate 5 usefulness wedges with holding furnace 2, be welded with fixed frame 7 on the described quick change plate 5, described flame retardant coating 3 is by graphite cannula 6 ends, quick change plate 5, the space-filling refractory material that fixed frame 7 surrounds generates, described crystallizer 1 comprises forward flange 11, rear flange 12 and baffle plate 13, described forward flange 11 is bolted to connection with baffle plate 13, and described rear flange 12 is bolted to connection with quick change plate 5.
This device mainly be for the production of in, the section bar of small dimension, in use, the forward flange 11 of crystallizer 1 is fixedly connected with baffle plate 13 usefulness bolts, the graphite cannula 6 of producing section bar is fixed in the crystallizer 1, the rear flange 12 of crystallizer 1 is connected with quick change plate 5 usefulness bolts and is fixed on the quick change plate 5, then the space that consists of with refractory material filling fixed frame 7, graphite cannula 6, quick change plate 5 forms flame retardant coating 3, flame retardant coating 3 is evened out, is tamped with fixed frame 7 outerplanars, refractory material forms flaring flame retardant coating 3 up and down, forms retardation setting type molten iron entrance structure; Then crystallizer 1 is connected and fixed by quick change plate 5 and holding furnace 2 usefulness wedges, holding furnace 2 molten iron outlet sizes and the formed horn mouth die cavity of Fig. 1 size are complementary, and so far, the production set-up procedure finishes.Molten iron is poured holding furnace 2 into from burner hearth 4, molten iron is drawn from the other end of graphite cannula 6 through cooling forming in graphite cannula 6, can realize the continuous casting production of section bar.Owing to be coated with the flame retardant coating 3 of horn opening at graphite cannula 6 molten iron upstream ends, and along hole end surface upper edge cover width in the graphite cannula greater than the lower edge cover width, graphite cannula 6 parts that expose graphite cannula 6 lower edges are more than the upper edge, and graphite cannula endoporus periphery graphite is exposed.So molten iron can preheating graphite cannula 6 ends, especially end, graphite cannula 6 lower edge, molten iron enters the arrival end of graphite cannula 6, be difficult for to produce solidifying iron, greatly reduce that section bar scabs, crack defect, greatly reduced because of graphite and scratch the defective that section bar produces the hair rib, greatly reduced the section bar dreg defect, the section material section uniformity significantly promotes, and the quality problems of section bar are greatly reduced, and the section bar yield rate promotes greatly.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a cast iron horizontal continuous caster crystallizer and holding furnace retardation setting type interface structure are provided with burner hearth in the described holding furnace, are provided with graphite cannula in the described crystallizer, and it is characterized in that: described graphite cannula is coated with the flame retardant coating of horn opening in the end that is connected with burner hearth.
2. a kind of cast iron horizontal continuous caster crystallizer according to claim 1 and holding furnace retardation setting type interface structure, it is characterized in that: described flame retardant coating covers the outside, graphite cannula end, and graphite cannula endoporus upper edge graphite area coverage is greater than lower edge graphite area coverage.
3. a kind of cast iron horizontal continuous caster crystallizer according to claim 1 and holding furnace retardation setting type interface structure, it is characterized in that: described crystallizer is connected with wedge by the quick change plate with holding furnace.
4. a kind of cast iron horizontal continuous caster crystallizer according to claim 3 and holding furnace retardation setting type interface structure is characterized in that: be welded with fixed frame on the described quick change plate.
5. a kind of cast iron horizontal continuous caster crystallizer according to claim 1 and holding furnace retardation setting type interface structure, it is characterized in that: described flame retardant coating is to be formed by the space-filling refractory material that graphite cannula end, quick change plate, fixed frame surround.
6. a kind of cast iron horizontal continuous caster crystallizer according to claim 1 and holding furnace retardation setting type interface structure, it is characterized in that: described crystallizer comprises forward flange, rear flange and baffle plate, described forward flange and baffle plate are bolted to connection.
7. a kind of cast iron horizontal continuous caster crystallizer according to claim 6 and holding furnace retardation setting type interface structure, it is characterized in that: described rear flange and quick change plate are bolted to connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521180.9A CN102990018B (en) | 2012-12-05 | 2012-12-05 | Slow-condensing interface structure for crystallizer for cast iron horizontal continuous casting and heat preserving furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521180.9A CN102990018B (en) | 2012-12-05 | 2012-12-05 | Slow-condensing interface structure for crystallizer for cast iron horizontal continuous casting and heat preserving furnace |
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| Publication Number | Publication Date |
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| CN102990018A true CN102990018A (en) | 2013-03-27 |
| CN102990018B CN102990018B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210521180.9A Expired - Fee Related CN102990018B (en) | 2012-12-05 | 2012-12-05 | Slow-condensing interface structure for crystallizer for cast iron horizontal continuous casting and heat preserving furnace |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2003064A (en) * | 1977-08-23 | 1979-03-07 | Krupp Gmbh | Horizontal continuous casting plant for copper and copper alloys |
| CN85109468A (en) * | 1984-12-28 | 1986-06-10 | 日本钢管株式会社 | Molten steel is cast the horizontal continuous casting steel machine of strand |
| FR2576812A1 (en) * | 1985-02-07 | 1986-08-08 | Rotelec Sa | Method for the horizontal continuous casting of metals, particularly steel, and device for implementing this method |
| CN85101308A (en) * | 1985-04-01 | 1987-01-10 | 福斯特-阿尔品公司 | Horizontal continuous cast ingot crystallizer |
| CN203316691U (en) * | 2012-12-05 | 2013-12-04 | 陕西华安铸铁型材有限公司 | Delayed coagulation type interface structure for cast iron horizontal continuous casting crystallizer and heat preserving furnace |
-
2012
- 2012-12-05 CN CN201210521180.9A patent/CN102990018B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2003064A (en) * | 1977-08-23 | 1979-03-07 | Krupp Gmbh | Horizontal continuous casting plant for copper and copper alloys |
| CN85109468A (en) * | 1984-12-28 | 1986-06-10 | 日本钢管株式会社 | Molten steel is cast the horizontal continuous casting steel machine of strand |
| FR2576812A1 (en) * | 1985-02-07 | 1986-08-08 | Rotelec Sa | Method for the horizontal continuous casting of metals, particularly steel, and device for implementing this method |
| CN85101308A (en) * | 1985-04-01 | 1987-01-10 | 福斯特-阿尔品公司 | Horizontal continuous cast ingot crystallizer |
| CN203316691U (en) * | 2012-12-05 | 2013-12-04 | 陕西华安铸铁型材有限公司 | Delayed coagulation type interface structure for cast iron horizontal continuous casting crystallizer and heat preserving furnace |
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| CN102990018B (en) | 2015-07-08 |
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Denomination of invention: Slow-condensing interface structure for crystallizer for cast iron horizontal continuous casting and heat preserving furnace Effective date of registration: 20161222 Granted publication date: 20150708 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: SHAANXI HUA AN CONTINUOUS CASTING Co.,Ltd. Registration number: 2016990001159 |
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Effective date of registration: 20201020 Address after: 726000 small and medium sized enterprise park, high tech Zone, Shangzhou District, Shangluo City, Shaanxi Province Patentee after: Shaanxi Junan Jinggong Technology Co.,Ltd. Address before: 710100 No. 62 East Street, Du Zhen, Xi'an, Shaanxi, Changan District Patentee before: SHAANXI HUA AN CONTINUOUS CASTING Co.,Ltd. |
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Granted publication date: 20150708 Termination date: 20211205 |