CN112276026B - Sealing dummy ingot composition, preparation method and application thereof - Google Patents
Sealing dummy ingot composition, preparation method and application thereof Download PDFInfo
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- CN112276026B CN112276026B CN202011028340.7A CN202011028340A CN112276026B CN 112276026 B CN112276026 B CN 112276026B CN 202011028340 A CN202011028340 A CN 202011028340A CN 112276026 B CN112276026 B CN 112276026B
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- sealing
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- dummy bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/08—Accessories for starting the casting procedure
- B22D11/088—Means for sealing the starter bar head in the moulds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/12—Materials for stopping leaks, e.g. in radiators, in tanks
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention relates to a sealing dummy ingot composition, a preparation method and application thereof, wherein the sealing dummy ingot composition comprises the following effective components in parts by weight: SiO 2 2 60-80 parts; al (aluminum) 2 O 3 10-20 parts; fe 2 O 3 1-10 parts; 10-40 parts of rapeseed oil; use of a sealed dummy bar composition for sealing a dummy bar comprising: the method comprises the following steps: filling: filling a gap between a dummy bar head and the crystallizer with a dummy bar sealing composition; a paving step: laying a layer of nail scraps on the surface of the dummy bar head; spreading a layer of cold steel material on the nail scraps to finish sealing dummy ingots; the sealing dummy ingot composition is an environment-friendly and safe sealing material, is simple in use mode, reduces the material cost of the sealing dummy ingot, improves the working efficiency, has excellent sealing performance, and effectively reduces the incidence rate of casting accidents.
Description
Technical Field
The invention relates to the technical field of sealing, in particular to a sealing dummy ingot composition, a preparation method and application thereof.
Background
The method is mainly characterized in that a gap between a dummy bar head and the wall of a crystallizer is filled, and the aim of preventing high-temperature molten steel from seeping into the gap between the dummy bar head and the crystallizer to cause casting leakage when casting is started in continuous casting is achieved.
The currently and generally adopted dummy ingot sealing material is a paper rope or an asbestos rope, and the dummy ingot sealing method comprises the following steps: firstly, sending a dummy bar head to a fixed position in a crystallizer; secondly, blowing and cleaning water and impurities on the dummy bar head and the wall of the crystallizer; then manually filling a gap between the dummy bar head and the wall of the crystallizer with a dry paper rope or an asbestos rope, and keeping the asbestos rope and the dummy bar head parallel and level; scattering a layer of dry scrap iron along the wall of the crystallizer, and pressing the asbestos rope; and finally, placing the cold steel bar into a crystallizer, covering the surface of the dummy ingot head, and spreading scrap iron.
As the iron filings can be flushed away under the impact of the steel flow during casting, the weak part of the used sealing material paper rope or asbestos rope can be burnt and damaged after encountering molten steel, thereby causing the molten steel to permeate into the gap between the dummy bar head and the crystallizer, causing casting leakage and seriously influencing production. In addition, the sealed dummy ingot mode has complex operation, high material cost and environmental pollution, and is not beneficial to the occupational health of workers.
Disclosure of Invention
Aiming at the defects in the prior art, the first purpose of the invention is to provide the sealing dummy ingot composition, the sealing material which is environment-friendly and safe, the use mode is simple, the material cost of the sealing dummy ingot is reduced, the working efficiency is improved, the sealing performance is excellent, and the casting start accident rate is effectively reduced.
The second purpose of the invention is to provide a preparation method of the seal dummy ingot composition, which is simple and convenient and can be produced in batch.
The third purpose of the invention is to provide an application of the dummy bar sealing composition, and the sealing process is fast and efficient in order to apply the composition to the dummy bar sealing.
The first purpose of the above technology of the present invention is achieved by the following technical solutions: a sealing dummy ingot composition comprises the following effective components in parts by weight:
in one embodiment, the method further comprises the following steps:
0.5-2.5 parts of CaO;
0.5-2.5 parts of MgO.
In one embodiment, the composition comprises the following effective components in parts by weight:
in one embodiment, the composition comprises the following effective components in parts by weight:
in one embodiment, the rapeseed oil has a boiling point of 200-.
In one embodiment, the Engler viscosity E020 of the rapeseed oil is 13.5-14.0, and the fatty acid standard substance rating is as follows: 0(8.9 +/-0.8)%, 0(2.8 +/-0.2)%, C18:1(22.3 +/-1.0)%, C18:2(40.1 +/-2.2)%, C18:3(9.2 +/-0.8)%, C20:0(0.5 +/-0.1)%, C20:1(5.1 +/-0.4)%, and C22:1(10.0 +/-1.6)%.
The second purpose of the above technology of the present invention is achieved by the following technical solutions: a process for preparing a sealed dummy bar composition,
mixing SiO 2 、Al 2 O 3 、Fe 2 O 3 Mixing, adding oleum Rapae, and mixing.
The third purpose of the above technology of the present invention is achieved by the following technical solutions: use of a sealed dummy bar composition for sealing a dummy bar comprising: the method comprises the following steps:
filling: filling a gap between a dummy bar head and the crystallizer with a dummy bar sealing composition;
a paving step: laying a layer of nail scraps on the surface of the dummy bar head; and (5) paving a layer of cold steel material on the nail scraps to finish the sealing dummy ingot.
In one embodiment, the filling step is carried out by extruding the sealing dummy bar composition.
In one embodiment, the thickness of the nail chips in the laying step is 1 cm.
In conclusion, the invention has the following beneficial effects:
1. SiO in the composition of the seal dummy ingot of the invention 2 、Al 2 O 3 、Fe 2 O 3 After mixing, the composite has good plasticity and refractoriness, and can prevent the plasticity of the whole composite from being deteriorated due to water evaporation by combining with rapeseed oil;
2. the rapeseed oil of the seal dummy ingot composition has good lubricity, can reduce the scratch of a casting blank on a copper pipe, prevents the casting blank from being bonded in a crystallizer, and ensures the smooth casting;
3. The sealing dummy bar composition is applied to the sealing dummy bar, the sealing mode process is quick and efficient, and the sealing performance is good.
Detailed Description
The present invention will be described in detail with reference to the following specific embodiments and examples.
A sealing dummy ingot composition comprises the following effective components in parts by weight:
wherein the boiling point of the rapeseed oil is 200-300 ℃, the Engler viscosity E020 is 13.5-14.0, and the standard substance definite value of the fatty acid is as follows: c16:0(8.9 +/-0.8)%, C18:0(2.8 +/-0.2)%, C18:1(22.3 +/-1.0)%, C18:2(40.1 +/-2.2)%, C18:3(9.2 +/-0.8)%, C20:0(0.5 +/-0.1)%, C20:1(5.1 +/-0.4)%, C22:1(10.0 +/-1.6)%.
A process for preparing a sealed dummy bar composition,
mixing SiO 2 、Al 2 O 3 、Fe 2 O 3 Mixing, adding oleum Rapae, and mixing.
Use of a sealed dummy bar composition for sealing a dummy bar comprising: the method comprises the following steps:
filling: filling a gap between a dummy bar head and a crystallizer by extruding a dummy bar sealing composition;
a paving step: paving a layer of nail scraps with the thickness of 1cm on the surface of the dummy bar head; and (5) paving a layer of cold steel material on the nail scraps to finish the sealing dummy ingot.
SiO 2 、Al 2 O 3 、Fe 2 O 3 CaO and MgO are mixed to have good refractoriness, and the composition has good plasticity by adding rapeseed oil for mixing, is filled in an extrusion mode, can fit with a gap between a dummy ingot head and a crystallizer, and can realize quick sealing of the dummy ingot. The components of the composition are all environment-friendly materials, namely SiO 2 、Al 2 O 3 、Fe 2 O 3 The combination of CaO and MgO has good plasticity when the humidity is certain, and plays a good role in sealing the dummy bar head. However, once the water is evaporated, the plasticity of the casting powder is immediately deteriorated, the powder is seriously pulverized, the sealing effect is lost, and hidden troubles are brought to casting. The rapeseed oil is added, so that the moisture-keeping effect is achieved, the plasticity of the rapeseed oil is kept, the self-lubricating property of the rapeseed oil is achieved, the scratching of a casting blank on a copper pipe can be reduced, the casting blank is prevented from being bonded in a crystallizer, and the casting is ensured to be performed smoothly. The prepared composition is paste which is not easy to agglomerate and denature and still has certain fluidity after being placed for a long time. The extrusion composition can be quickly sealed by adopting an extruder, a spray gun and the like, so that casting breakout can be effectively avoided, and the production efficiency is improved.
Examples 1 to 3:
the sealing dummy ingot composition comprises the following effective components in parts by weight as shown in table 1:
TABLE 1 ingredient ratios of examples 1-3
| Composition (I) | Example 1 | Example 2 | Example 3 |
| SiO 2 | 70 | 68 | 75 |
| Al 2 O 3 | 18 | 16 | 12 |
| Fe 2 O 3 | 5 | 4 | 2 |
| CaO | 2 | 1.5 | 1 |
| MgO | 2 | 1.5 | 1 |
| Rapeseed oil | 17 | 19 | 22 |
Wherein the boiling point of the rapeseed oil is 200-300 ℃, the Engler viscosity E020 is 13.5-14.0, and the standard substance definite value of the fatty acid is as follows: c16:0(8.9 +/-0.8)%, C18:0(2.8 +/-0.2)%, C18:1(22.3 +/-1.0)%, C18:2(40.1 +/-2.2)%, C18:3(9.2 +/-0.8)%, C20:0(0.5 +/-0.1)%, C20:1(5.1 +/-0.4)%, C22:1(10.0 +/-1.6)%.
A method for preparing a sealed dummy bar composition,
mixing SiO 2 、Al 2 O 3 、Fe 2 O 3 Mixing, adding oleum Rapae, and mixing.
Use of a sealed dummy bar composition for sealing a dummy bar comprising: the method comprises the following steps:
filling: filling a gap between a dummy bar head and a crystallizer by extruding a dummy bar sealing composition;
a paving step: paving a layer of nail scraps with the thickness of 1cm on the surface of the dummy bar head; and (5) paving a layer of cold steel material on the nail scraps to finish the sealing dummy ingot.
After ingot sealing using the compositions of examples 1-3, the sealing effect was scored and analyzed to have a score of 1-5, with 5 being the highest, and the final score being the total score, with the results shown in table 2.
TABLE 2 examination results of examples 1 to 3
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. The seal dummy ingot composition is characterized by comprising the following effective components in parts by weight:
SiO 2 60-80 parts of Al 2 O 3 10-20 parts of Fe 2 O 3 1-10 parts of CaO0.5-2.5 parts of MgO0.5-2.5 parts of rapeseed oil 10-40 parts of the total weight of the mixture;
wherein the Engler viscosity E020 of the rapeseed oil is 13.5-14.0, and the fatty acid standard substance definite value is as follows: c16:0(8.9 + -0.8)%, C18:0(2.8 + -0.2)%, C18:1(22.3 + -1.0)%, C18:2(40.1 + -2.2)%, C18:3(9.2 + -0.8)%, C20:0(0.5 + -0.1)%, C20:1(5.1 + -0.4)%, C22:1(10.0 + -1.6)%.
2. The seal dummy bar composition according to claim 1, comprising the following effective ingredients in parts by weight:
SiO 2 70 parts of Al 2 O 3 18 parts of Fe 2 O 3 5 parts of CaO, 2 parts of MgO, and 17 parts of rapeseed oil.
3. The seal dummy bar composition of claim 1, wherein the rapeseed oil has a boiling point of 200-.
4. Use of a closure dummy bar composition according to any of claims 1 to 3, wherein: to use the seal dummy bar composition for sealing dummy bars: the method comprises the following steps:
filling: filling a gap between a dummy bar head and the crystallizer with a dummy bar sealing composition;
a paving step: laying a layer of nail scraps on the surface of the dummy bar head; and (5) paving a layer of cold steel material on the nail scraps to finish the sealing dummy ingot.
5. The use of a dummy bar composition according to claim 4, wherein: in the filling step, the sealing dummy bar composition is filled in an extrusion manner.
6. The use of a dummy bar composition according to claim 4, wherein: in the paving step, the thickness of the nail scraps is 1 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028340.7A CN112276026B (en) | 2020-09-26 | 2020-09-26 | Sealing dummy ingot composition, preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028340.7A CN112276026B (en) | 2020-09-26 | 2020-09-26 | Sealing dummy ingot composition, preparation method and application thereof |
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| CN112276026A CN112276026A (en) | 2021-01-29 |
| CN112276026B true CN112276026B (en) | 2022-07-29 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1161110A (en) * | 1967-09-04 | 1969-08-13 | Foseco Int | Application of Sealant Materials. |
| DE1959104A1 (en) * | 1969-11-25 | 1971-05-27 | Demag Ag | Oil asbestos paste for stopping of gaps in - mould walls |
| US3726332A (en) * | 1970-03-12 | 1973-04-10 | British Aluminium Co Ltd | Semi-continuous casting method utilizing a thermoinsulating sheet material |
| GB1349269A (en) * | 1970-12-10 | 1974-04-03 | Concast Ag | Method of sealing a clearance gap in a continuous casting mould |
| US4178000A (en) * | 1977-03-25 | 1979-12-11 | Vereinigte Osterreichische Eisen- Und Stahlwerke - Alpine Montan Aktiengesellschaft | Sealing provided between the walls of a cooled continuous mould and the head of a starter bar |
| GB8411150D0 (en) * | 1983-06-21 | 1984-06-06 | Heidenau Netz & Seil Veb | Casting mould |
| KR20010110882A (en) * | 2000-06-09 | 2001-12-15 | 이구택 | Mud sealant for sealing dummy bar |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5913299B2 (en) * | 1976-09-28 | 1984-03-28 | 新日本製鐵株式会社 | Filling sealant for horizontal continuous casting of molten metal |
-
2020
- 2020-09-26 CN CN202011028340.7A patent/CN112276026B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1161110A (en) * | 1967-09-04 | 1969-08-13 | Foseco Int | Application of Sealant Materials. |
| DE1959104A1 (en) * | 1969-11-25 | 1971-05-27 | Demag Ag | Oil asbestos paste for stopping of gaps in - mould walls |
| US3726332A (en) * | 1970-03-12 | 1973-04-10 | British Aluminium Co Ltd | Semi-continuous casting method utilizing a thermoinsulating sheet material |
| GB1349269A (en) * | 1970-12-10 | 1974-04-03 | Concast Ag | Method of sealing a clearance gap in a continuous casting mould |
| US4178000A (en) * | 1977-03-25 | 1979-12-11 | Vereinigte Osterreichische Eisen- Und Stahlwerke - Alpine Montan Aktiengesellschaft | Sealing provided between the walls of a cooled continuous mould and the head of a starter bar |
| GB8411150D0 (en) * | 1983-06-21 | 1984-06-06 | Heidenau Netz & Seil Veb | Casting mould |
| KR20010110882A (en) * | 2000-06-09 | 2001-12-15 | 이구택 | Mud sealant for sealing dummy bar |
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| CN112276026A (en) | 2021-01-29 |
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