CN203021584U - Cast-iron cooling wall with nano anti-carburizing water pipe - Google Patents
Cast-iron cooling wall with nano anti-carburizing water pipe Download PDFInfo
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- CN203021584U CN203021584U CN2012207376939U CN201220737693U CN203021584U CN 203021584 U CN203021584 U CN 203021584U CN 2012207376939 U CN2012207376939 U CN 2012207376939U CN 201220737693 U CN201220737693 U CN 201220737693U CN 203021584 U CN203021584 U CN 203021584U
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- water pipe
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- cooling wall
- iron
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Abstract
The utility model discloses a cast-iron cooling wall with a nano anti-carburizing water pipe. According to the cast-iron cooling wall, the nano anti-carburizing water pipe and a protection pipe are cast in a cooling wall substrate; and a nano anti-carburizing coating material is sprayed or brushed to the external wall of a portion, cast in the cooling wall substrate, of the water pipe, and a nano anti-carburizing coating material is sprayed or brushed to the internal and external walls of a portion, cast in the cooling wall substrate, of the protection pipe. The nano anti-carburizing water pipe is adopted, and a coating layer contains an anti-carburizing phase, and a nano-scale high-heat-conductivity phase and a molten iron infiltrating phase, so that metallurgical detections show that the anti-carburizing effect completely reaches the standards of YB/T4073-2007 on cast-iron cooling walls for blast furnaces, and tests carried out by a JR-3 thermal property tester show that the heat conductivity is increased by 10.5%; and in addition, an external arc of a bent portion of the water pipe is subjected to special treatment coating thickening, so that the phenomenon of water pipe burn-through during molten iron pouring is avoided, the rejection rate is reduced, and the comprehensive production cost of the cooling wall is reduced by 3%. According to the cast-iron cooling wall with the nano anti-carburizing water pipe, the production cost is reduced, the heat conductivity is high, and the cast-iron cooling wall is applicable to working conditions of large blast furnace body cooling.
Description
Technical field
The utility model relates to the anti-carburizing water pipe cast-iron cooling wall of cylinder iron cooling stave of a kind of iron-smelting blast furnace, particularly a kind of nanometer.
Background technology
The blast-furnace cast iron cooling stave belongs to the blast furnace cooling apparatus, and it is configured to the ironcasting of pre-buried low-carbon (LC) weldless steel tube, and it is undertaken cooling body of heater with protection furnace shell and steel construction, support refractory materials and safeguards that reasonable stove shape is to realize the vital task of natural labor.The cooling principle of blast-furnace cast iron cooling stave is that furnace heat is passed to refractory liner, cooling stave cast iron matrix, weldless steel tube wall successively, outside finally by the recirculated cooling water in steel pipe, the heat band being come out of the stove.This shows, the main task of blast-furnace cast iron cooling stave has been the cooling heat dissipation effect.
In the cast-iron cooling wall casting cycle, for preventing that being cast into water-cooled tube (soft steel) carburizing becomes fragile, must brush or the thick masking paste in spraying one deck 0.30mm left and right at tube outer wall, can make it can play the anti-carburizing effect that is cast into water pipe in casting process, but because masking paste generally is comprised of oxide compounds such as Al2O3, SiO2, thermal conductivity is low.Can formation add insulating sandwich like this between pipe outer wall and matrix, and air gap occur, reduce the heat dispersion of cooling stave.
Utility model patent ZL03235856.3 discloses a kind of alloyed cooling wall of water pipe, can overcome defects, but water pipe Alloying Treatment complex process, cost is higher, and application is restricted; Utility model patent ZL03235855.5 discloses a kind of copper cooling wall of water paper, and the cooling stave heat dispersion obviously improves, but because the fusing point of copper is lower, very easily burns water-cooled tube in the cooling stave casting cycle, and products waste also is difficult to promote.
Except above-mentioned situation, because there is crooked circular arc position in the water-cooled tube that is cast into cooling stave, in the bend pipe process, there is inevitable thinning phenomenon in crooked position external arc place wall thickness, and during casting, also easily burn at this place.
Process the shortcoming of water pipe cooling stave based on above-mentioned existing anti-carburizing, and the expensive cost of other techniques is high, implement the problems such as difficulty is large, researchs and develops a kind of new masking paste and process necessary for the anti-carburizing of cast-iron cooling wall water-cooled tube.
Summary of the invention
In order to solve the above-mentioned technical problem that exists in existing blast-furnace cast iron cooling stave production, use, provide a kind of blast furnace with the anti-carburizing water pipe cast-iron cooling wall of nanometer, production cost is reduced, improved thermal conductivity, use properties is improved, and can adapt to the cooling operating mode of large blast furnace.
The technical solution adopted in the utility model is:
This nanometer is prevented carburizing water pipe cast-iron cooling wall, is to be cast into the anti-carburizing water pipe of nanometer and pillar in the cooling stave matrix.
Described water pipe is cast into the outer wall of cast-iron cooling wall body portion through spraying or brushing nanometer masking paste, forms the nanometer anti-carburization coating.This water pipe is cast into the spraying of cooling stave body portion different sites or brushes the thickness difference of nanometer masking paste, and crooked position external arc coat-thickness is not less than 0.10 mm, and all the other position coat-thicknesses are not less than 0.05mm.
Described pillar is cast into the spraying of cooling stave body portion inside and outside wall or brushes the nanometer masking paste, and coat-thickness is not less than 0.05mm.
Described water pipe and pillar are No. 10 steel seamless tubes, or No. 20 steel seamless tubes.
Described cooling stave matrix inner face is driven dovetail-indent ramming refractory matter, or cold edge, heat edge and all standing refractory brick.Described cooling stave matrix inner face can be also the light face.
Described cooling stave matrix adopting graphitic cast iron, heat-resistant low-chromium cast iron or spheroidal graphite cast iron casting form.
The utility model is owing to having adopted nanometer to prevent the carburizing water pipe, contain anti-carburizing phase, nano level high heat conductance phase in coating and invade profit mutually with molten iron, detect anti-carburizing effect through metallographic and meet YB/T 4073-2007 " blast furnace is cooling stave cylinder iron " standard fully, improve 10.5% through JR-3 thermal property tester test thermal conductivity, add the thickening of upper hose crooked position external arc place's special processing coating, avoided that in molten steel pouring course, water pipe burns phenomenon, reduced scrap rate, the comprehensive production cost of cooling stave reduces by 3%.
This nanometer is prevented carburizing water pipe cast-iron cooling wall, and production cost reduces, and thermal conductivity is high, can adapt to the cooling operating mode of large blast furnace.
Description of drawings
Fig. 1 is the anti-carburizing water pipe cast-iron cooling wall structural representation of nanometer.
Embodiment
Introduce embodiment of the present utility model below in conjunction with accompanying drawing.
This nanometer is prevented carburizing water pipe cast-iron cooling wall, is cast into the anti-carburizing water pipe 4 of nanometer and pillar 2 in cooling stave matrix 1, and before casting, water pipe 4 is inserted in pillar 2, and water pipe 4 and pillar 2 exposed junction both ends of the surface are at a distance of 150mm ~ 200mm, and the location.Water pipe 4 is cast into the outer wall different sites spraying of cooling stave body portion or brushes the thickness difference of nanometer masking paste layer, and crooked position external arc 3 place's coat-thicknesses are not less than 0.10 mm, and all the other position coat-thicknesses are not less than 0.05mm; The inside and outside wall that pillar 2 is cast into the cooling stave body portion all sprays or brushes the nanometer masking paste, and coat-thickness is not less than 0.05mm.
The nanometer masking paste adopts the SL-101 nanometer masking paste of Shilin's development.This coating mainly contains nano level chromium sesquioxide, silicon-dioxide, silicon carbide, aluminium nitride and Micron-Sized Copper Powders Coated and aluminium powder etc., coating unit weight 1.1 ~ 1.2g/cm3, pH value 9 ~ 11,1800 ℃ of coating refractoriness.This coating mainly plays the anti-carburizing effect of high temperature.
Cooling stave matrix 1 inner face 6 has dovetail-indent 5, but the ramming refractory matter, or cold edge, heat edge and all standing refractory brick; Cooling stave matrix 1 inner face 6 also can adopt the light face.
Cooling stave matrix 1 can adopt graphitic cast iron, heat-resistant low-chromium cast iron or spheroidal graphite cast iron casting to form.
Claims (8)
1. the anti-carburizing water pipe cast-iron cooling wall of nanometer, is characterized in that: be cast into the anti-carburizing water pipe of nanometer and pillar in this cast-iron cooling wall matrix.
2. nanometer is prevented carburizing water pipe cast-iron cooling wall according to claim 1, it is characterized in that: described water pipe is cast into the outer wall of cast-iron cooling wall body portion through spraying or brushing nanometer masking paste, forms the nanometer anti-carburization coating.
3. nanometer is prevented carburizing water pipe cast-iron cooling wall according to claim 2, and it is characterized in that: described water pipe crooked position exterior arc surface coat-thickness is not less than 0.10 mm, and all the other position coat-thicknesses are not less than 0.05mm.
4. nanometer is prevented carburizing water pipe cast-iron cooling wall according to claim 1, it is characterized in that: the coat-thickness that described pillar is cast into the spraying of cooling stave body portion inside and outside wall or brushing nanometer masking paste is not less than 0.05mm.
5. nanometer is prevented carburizing water pipe cast-iron cooling wall according to claim 1, and it is characterized in that: described water pipe and pillar are No. 10 steel seamless tubes, or No. 20 steel seamless tubes.
6. nanometer is prevented carburizing water pipe cast-iron cooling wall according to claim 1, and it is characterized in that: described cooling stave matrix inner face is driven dovetail-indent ramming refractory matter, or cold edge, heat edge and all standing refractory brick.
7. nanometer is prevented carburizing water pipe cast-iron cooling wall according to claim 1, and it is characterized in that: described cooling stave matrix inner face is the light face.
8. nanometer is prevented carburizing water pipe cast-iron cooling wall according to claim 1, it is characterized in that: described cooling stave matrix adopting graphitic cast iron, heat-resistant low-chromium cast iron or spheroidal graphite cast iron casting form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207376939U CN203021584U (en) | 2012-12-28 | 2012-12-28 | Cast-iron cooling wall with nano anti-carburizing water pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207376939U CN203021584U (en) | 2012-12-28 | 2012-12-28 | Cast-iron cooling wall with nano anti-carburizing water pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203021584U true CN203021584U (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207376939U Expired - Lifetime CN203021584U (en) | 2012-12-28 | 2012-12-28 | Cast-iron cooling wall with nano anti-carburizing water pipe |
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| CN (1) | CN203021584U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771883A (en) * | 2014-01-06 | 2014-05-07 | 世林（漯河）冶金设备有限公司 | Nano anti-carburizing coating as well as preparation method and application thereof |
| CN108588314A (en) * | 2018-04-03 | 2018-09-28 | 莱芜市天铭冶金设备有限公司 | A kind of pre- poling cast-iron cooling wall of high-efficiency long-life and its manufacturing process |
-
2012
- 2012-12-28 CN CN2012207376939U patent/CN203021584U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771883A (en) * | 2014-01-06 | 2014-05-07 | 世林（漯河）冶金设备有限公司 | Nano anti-carburizing coating as well as preparation method and application thereof |
| CN103771883B (en) * | 2014-01-06 | 2015-08-05 | 世林（漯河）冶金设备有限公司 | Nanometer masking paste and its preparation method and application |
| CN108588314A (en) * | 2018-04-03 | 2018-09-28 | 莱芜市天铭冶金设备有限公司 | A kind of pre- poling cast-iron cooling wall of high-efficiency long-life and its manufacturing process |
| WO2019192074A1 (en) * | 2018-04-03 | 2019-10-10 | 莱芜市天铭冶金设备有限公司 | High-efficient long-life pre-perforating pipe cast iron cooling wall and manufacturing process therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Cast-iron cooling wall with nano anti-carburizing water pipe Effective date of registration: 20181120 Granted publication date: 20130626 Pledgee: Rural Credit Cooperatives in Yuanhui District of Luohe City Pledgor: SHILIN (LUOHE) METALLURGY EQUIPMENT Co.,Ltd. Registration number: 2018990001095 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191030 Granted publication date: 20130626 Pledgee: Rural Credit Cooperatives in Yuanhui District of Luohe City Pledgor: SHILIN (LUOHE) METALLURGY EQUIPMENT Co.,Ltd. Registration number: 2018990001095 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |