CN101648260A - Twin-roll thin-strip casting side sealing plate and manufacturing method thereof - Google Patents
Twin-roll thin-strip casting side sealing plate and manufacturing method thereof Download PDFInfo
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- CN101648260A CN101648260A CN200810041687A CN200810041687A CN101648260A CN 101648260 A CN101648260 A CN 101648260A CN 200810041687 A CN200810041687 A CN 200810041687A CN 200810041687 A CN200810041687 A CN 200810041687A CN 101648260 A CN101648260 A CN 101648260A
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- sealing plate
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- side sealing
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Abstract
The invention discloses a twin-roll thin-strip casting side sealing plate. The side sealing plate comprises a panel containing boron nitride materials and a base plate with aluminum-silicon thermal insulation materials, wherein the panel and the base plate are fixed through adhesion. The invention also discloses a method for manufacturing the side sealing plate. As the thermal conductivity of thebase plate of the side sealing plate is much less than that of the panel, the heat of the base plate is not easy to dissipate, and heat-insulation effect is improved so as to ensure the quality of theside parts of strip steel. Moreover, equal thermal expansion coefficients of the base plate and the panel can avoid twist deformation or cracking after the side sealing plate is heated. Modified silicone resin binder resistant to high temperature not only enhances bonding strength, but also plays a role in thermal insulation.
Description
Technical field
The present invention relates to twin-roll thin strip continuous casting technology, more particularly, relate to a kind of twin-roll thin-strip casting side sealing plate and preparation method thereof.
Background technology
Different with traditional continuous casting technology, the twin-roll thin strip continuous casting technology need not passed through the multiple tracks hot-rolled process, can simplify the strip production technology greatly and reduce equipment investment.See also shown in Figure 1, twin-roll thin strip continuous casting mainly by molten steel is cast directly over one relatively rotate by two and molten bath that the crystallization roller 1 that can cool off fast and side seal board 10 surround in, the axial surface that molten steel rotates at crystallization roller 1 is cooled and solidifies, and then formation solidified shell and growth gradually, be pressed together at the minimum place of the roll gap of two crystallization rollers 1 then, thereby form the thick metal thin strip of 1～5mm 3, and enter rollgang 4 by guide plate 2.Side seal board 10 wherein is a key equipment, consider for long-time casting, to the requirement of side seal board 10 be difficult for wetting and corrode by molten steel, and have preferably lubricity, wearability and thermal shock resistance and thermal conductivity factor lower.
Because boron nitride material (BN) has anti-infiltration and erosion resistant characteristics, generally is used for the making of side seal board.But boron nitride material costs an arm and a leg, and comparatively commonly used at present is to adopt and the mutually compound side seal board of making of other material.
Japan Patent JP3207554 discloses a kind of side seal board preparation method, the substrate that it adopts a high-alumina brick to make, heating rod is housed in substrate, and be provided with the superficial layer of two-layer nitrogen boron material on the surface of substrate, wherein top layer is softer, inferior top layer is hard and boron nitride content is relatively low, and contains aluminium nitride (AlN) and silicon nitride (Si
3N
4), make it have certain heat insulation effect, scuff resistance is higher.But the complex structure of this side seal board, the rupture strength of substrate is limited, and in addition, the thermal conductivity factor of substrate is excessive (to be 1～3.5wm
-1k
-1), cause heat radiation comparatively fast to be unfavorable for side seal board insulation, thereby easily cause the side seal board near surface cold steel that condenses, and then cause the limit to split or phenomenon such as burr the quality of edges of influence band steel.Though and Japan Patent JP3207555 and JP3207550 have carried out certain improvement at side seal board, and fail fundamentally to solve its heat radiation comparatively fast, the problem that insulation is not good.
WO9600626 discloses another kind of side seal board, and it comprises the substrate of a refractory material and the panel of a nitrogen boron material, connects by cement between the two.The manufacturing of this side seal board, installation and use are all very complicated, and practicality is poor, and in addition, cement particularly at high temperature very easily comes off in conjunction with insecure.
Summary of the invention
At the above-mentioned heat radiation that exists in the prior art is very fast, insulation is not good and relatively poor, the caducous shortcoming of intensity, the purpose of this invention is to provide a kind of twin-roll thin-strip casting side sealing plate and preparation method thereof, the thermal conductivity factor of this side seal board is little, and heat insulating effect is good.
For achieving the above object, the present invention adopts following technical scheme:
This twin-roll thin-strip casting side sealing plate comprises that the panel of a nitrogen boron material and an aluminium silicon are the substrate of heat preserving and insulating material, and between described panel and the substrate by being adhesively fixed.
The vertical cross-section of described substrate is " [" type structure; One side of described panel is located in the base openings, and this side of panel is provided with a tack coat, and bonding fixing by tack coat and substrate.
The Al of described substrate
2O
3Content 〉=30wt%, SiO
2Content≤70wt%.
The binding agent that described tack coat adopts is residual solid measuring greater than 60%, and viscosity is 6～20PaS, and serviceability temperature is higher than 1500 ℃ modified silicone resin binding agent.
The thickness of described tack coat is 0.1～1mm.
The concrete steps of the preparation method of this twin-roll thin-strip casting side sealing plate are as follows:
A. the surface that the panel and an aluminium silicon of a nitrogen boron material is the substrate of heat preserving and insulating material is all cleaned totally;
B. coating one deck modified silicone resin binding agent on a side of described panel;
C. described panel and substrate is bonding by binding agent, and firmly compress;
D. side seal board bonding, after compressing is carried out heating cure.
The concrete steps of described step D are as follows:
D1. side seal board bonding, after compressing was placed 3 hours naturally;
D2. side seal board is put into baking oven and carry out heated baking, temperature increasing schedule is 20 ℃/hour;
D3. until being warming up to 280 ℃, and be incubated 3 hours;
D4. naturally cool to normal temperature.
In steps A, the Al of the substrate of employing
2O
3Content 〉=30wt%, SiO
2Content≤70wt%.
In step B, the residual solid amount of the modified silicone resin binding agent of employing is greater than 60%, and viscosity is 6～20PaS, and serviceability temperature is higher than 1500 ℃.
The thickness of coating binding agent is 0.1～1mm.
In technique scheme, twin-roll thin-strip casting side sealing plate of the present invention comprises that the panel of a nitrogen boron material and an aluminium silicon are the substrate of heat preserving and insulating material, and between panel and the substrate by being adhesively fixed.The preparation method of side seal board of the present invention comprises panel and substrate bonding by binding agent, and carries out heating cure.The thermal conductivity factor of the substrate of this side seal board is significantly smaller than panel, makes that its heat is difficult for scattering and disappearing, and improved heat insulation effect, thereby guaranteed strip edge portion quality, and both thermal coefficient of expansions equates, distortion or cracking are distorted after can keeping from heat; By adopting resistant to elevated temperatures modified silicone resin binding agent, not only strengthened adhesive strength, and played insulation effect.
Description of drawings
Fig. 1 is the principle schematic of the twin-roll thin strip continuous casting of prior art;
Fig. 2 is the structural representation of side seal board of the present invention;
Fig. 3 is the cross-sectional schematic along A-A line among Fig. 3;
Fig. 4 is the user mode schematic diagram of side seal board of the present invention.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
See also shown in Figure 2, twin-roll thin-strip casting side sealing plate 20 integral body of the present invention are the class triangular structure, it comprises that the panel 21 of a nitrogen boron material and an aluminium silicon are the substrate 22 of heat preserving and insulating material, and the horizontal structure of substrate 22 is similar to panel 21, and is slightly larger than panel 21.Please in conjunction with shown in Figure 3, the vertical cross-section of this substrate 22 is " [" type structure, and a side of panel 21 is located in substrate 22 openings, and this side of panel 21 is provided with a tack coat 23, and bonding fixing by tack coat 23 with substrate 22, each limit portion of substrate 22 then partly wraps panel 21 corresponding limit portions.The aluminium silicon of above-mentioned employing is the Al of the substrate 22 of heat preserving and insulating material
2O
3Content be 75wt%, SiO
2Content be 23wt%, its coefficient of expansion is 5.8 * 10
-6/ ℃, be close with the coefficient of expansion of panel 21, and the thickness of this substrate 22 is 20mm.And the binding agent that tack coat 23 is adopted be residual solid amount greater than 60%, viscosity is 10PaS, serviceability temperature is higher than 1500 ℃ modified silicone resin binding agent, this binding agent has that elastoplasticity is good, thermal conductivity factor is little (less than 0.5wm
-1k
-1) characteristics, and the thickness of the tack coat 23 that is provided with is 0.8mm.By repeatedly repetition test and calculating, the comprehensive thermal conductivity factor of this substrate 22 and tack coat 23 has reached 0.29wm
-1k
-1, the thermal conductivity factor of panel 21 is 22wm
-1k
-1, the thermal conductivity factor of whole side seal board 20 then is 0.56wm
-1k
-1
See also shown in Figure 2, twin-roll thin-strip casting side sealing plate 20 integral body of the present invention are the class triangular structure, it comprises that the panel 21 of a nitrogen boron material and an aluminium silicon are the substrate 22 of heat preserving and insulating material, and the horizontal structure of substrate 22 is similar to panel 21, and is slightly larger than panel 21.Please in conjunction with shown in Figure 3, the vertical cross-section of this substrate 22 is " [" type structure, and a side of panel 21 is located in substrate 22 openings, and this side of panel 21 is provided with a tack coat 23, and bonding fixing by tack coat 23 with substrate 22, each limit portion of substrate 22 then partly wraps panel 21 corresponding limit portions.The aluminium silicon of above-mentioned employing is the Al of the substrate 22 of heat preserving and insulating material
2O
3Content be 60wt%, SiO
2Content be 35wt%, its coefficient of expansion is 5.2 * 10
-6/ ℃, be close with the coefficient of expansion of panel 21, and the thickness of this substrate 22 is 20mm.And the binding agent that tack coat 23 is adopted be residual solid amount greater than 60%, viscosity is 10PaS, serviceability temperature is higher than 1500 ℃ modified silicone resin binding agent, this binding agent has that elastoplasticity is good, thermal conductivity factor is little (less than 0.5wm
-1k
-1) characteristics, and the thickness of the tack coat 23 that is provided with is 0.5mm.By repeatedly repetition test and calculating, the comprehensive thermal conductivity factor of this substrate 22 and tack coat 23 has reached 0.25wm
-1k
-1, the thermal conductivity factor of panel 21 is 22wm
-1k
-1, the thermal conductivity factor of whole side seal board 20 then is 0.49wm
-1k
-1
See also shown in Figure 2, twin-roll thin-strip casting side sealing plate 20 integral body of the present invention are the class triangular structure, it comprises that the panel 21 of a nitrogen boron material and an aluminium silicon are the substrate 22 of heat preserving and insulating material, and the horizontal structure of substrate 22 is similar to panel 21, and is slightly larger than panel 21.Please in conjunction with shown in Figure 3, the vertical cross-section of this substrate 22 is " [" type structure, and a side of panel 21 is located in substrate 22 openings, and this side of panel 21 is provided with a tack coat 23, and bonding fixing by tack coat 23 with substrate 22, each limit portion of substrate 22 then partly wraps panel 21 corresponding limit portions.The aluminium silicon of above-mentioned employing is the Al of the substrate 22 of heat preserving and insulating material
2O
3Content be 30wt%, SiO
2Content be 68wt%, its coefficient of expansion is 4.2 * 10
-6/ ℃, be close with the coefficient of expansion of panel 21, and the thickness of this substrate 22 is 20mm.And the binding agent that tack coat 23 is adopted be residual solid amount greater than 60%, viscosity is 10PaS, serviceability temperature is higher than 1500 ℃ modified silicone resin binding agent, this binding agent has that elastoplasticity is good, thermal conductivity factor is little (less than 0.5wm
-1k
-1) characteristics, and the thickness of the tack coat 23 that is provided with is 0.1mm.By repeatedly repetition test and calculating, the comprehensive thermal conductivity factor of this substrate 22 and tack coat 23 has reached 0.23wm
-1k
-1, the thermal conductivity factor of panel 21 is 22wm
-1k
-1, the thermal conductivity factor of whole side seal board 20 then is 0.45wm
-1k
-1
And side seal board 20 of the present invention all can adopt following method to make: the first surface that the panel 21 and an aluminium silicon of a nitrogen boron material are the substrate 22 of heat preserving and insulating material is all cleaned totally; Coating one deck modified silicone resin binding agent on a side of panel 21 then; Again that panel 21 and substrate 22 is bonding by binding agent, and firmly compress; At last side seal board 20 bonding, after compressing is carried out heating cure.The concrete steps of heating cure are for placing side seal board 20 bonding, after compressing 3 hours naturally earlier; Then side seal board 20 is put into baking oven and carry out heated baking, temperature increasing schedule is 20 ℃/hour; Until being warming up to 280 ℃, and be incubated 3 hours; Naturally cooling to normal temperature at last just can.
See also shown in Figure 4, during use, only need this side seal board 20 is located in the bracing frame 5, and between substrate 22 and bracing frame 5 medial surfaces, be lined with layer of insulation material 6 (can adopt heat resisting temperature) greater than 1200 ℃ fire-retardent fiber felt-rug or fire resistant heat preserving plate, the compressive resistance of this heat-insulating material 6 should be higher than the stretch pressure of side seal board 20, and has flexibility preferably, can contact with crystallization roller 1 end face when bad at side seal board 20, adjust by local micro-deformation, thereby the end face that guarantees side seal board 20 and crystallization roller 1 is fitted fully, prevents bleed-out.
Because the substrate 22 of this side seal board 20 and the comprehensive thermal conductivity factor of tack coat 23 are significantly smaller than the thermal conductivity factor of panel 21, make that its heat is difficult for scattering and disappearing, improved heat insulation effect, thereby avoid the side seal board 20 near surfaces cold steel that condenses, cause the strip limit to split or defective such as burr, thereby guaranteed strip edge portion quality, improved economic benefit; Because substrate 22 is close with the thermal coefficient of expansion of panel 21, and tack coat 23 is comparatively soft, make that side seal board 20 is heated after, can be different and plane torsional deformation or cracking phenomena take place because of the swell increment of two plates; In addition, owing to adopted resistant to elevated temperatures modified silicone resin binding agent, not only strengthened adhesive strength, and played certain insulation effect.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (10)
1. twin-roll thin-strip casting side sealing plate is characterized in that:
This side seal board comprises that the panel of a nitrogen boron material and an aluminium silicon are the substrate of heat preserving and insulating material, and between described panel and the substrate by being adhesively fixed.
2. twin-roll thin-strip casting side sealing plate as claimed in claim 1 is characterized in that,
The vertical cross-section of described substrate is " [" type structure; One side of described panel is located in the base openings, and this side of panel is provided with a tack coat, and bonding fixing by tack coat and substrate.
3. twin-roll thin-strip casting side sealing plate as claimed in claim 2 is characterized in that,
The Al of described substrate
2O
3Content 〉=30wt%, SiO
2Content≤70wt%.
4. twin-roll thin-strip casting side sealing plate as claimed in claim 2 is characterized in that:
The binding agent that described tack coat adopts is residual solid measuring greater than 60%, and viscosity is 6～20PaS, and serviceability temperature is higher than 1500 ℃ modified silicone resin binding agent.
5. twin-roll thin-strip casting side sealing plate as claimed in claim 4 is characterized in that:
The thickness of described tack coat is 0.1～1mm.
6. the preparation method of a twin-roll thin-strip casting side sealing plate is characterized in that,
The concrete steps of this preparation method are as follows:
A. the surface that the panel and an aluminium silicon of a nitrogen boron material is the substrate of heat preserving and insulating material is all cleaned totally;
B. coating one deck modified silicone resin binding agent on a side of described panel;
C. described panel and substrate is bonding by binding agent, and firmly compress;
D. side seal board bonding, after compressing is carried out heating cure.
7. the preparation method of twin-roll thin-strip casting side sealing plate as claimed in claim 6 is characterized in that:
The concrete steps of described step D are as follows:
D1. side seal board bonding, after compressing was placed 3 hours naturally;
D2. side seal board is put into baking oven and carry out heated baking, temperature increasing schedule is 20 ℃/hour;
D3. until being warming up to 280 ℃, and be incubated 3 hours;
D4. naturally cool to normal temperature.
8. the preparation method of twin-roll thin-strip casting side sealing plate as claimed in claim 6 is characterized in that:
In steps A, the Al of the substrate of employing
2O
3Content 〉=30wt%, SiO
2Content≤70wt%.
9. the preparation method of twin-roll thin-strip casting side sealing plate as claimed in claim 6 is characterized in that:
In step B, the residual solid amount of the modified silicone resin binding agent of employing is greater than 60%, and viscosity is 6～20PaS, and serviceability temperature is higher than 1500 ℃.
10. the preparation method of twin-roll thin-strip casting side sealing plate as claimed in claim 9 is characterized in that:
The thickness of coating binding agent is 0.1～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100416878A CN101648260B (en) | 2008-08-14 | 2008-08-14 | Twin-roll thin-strip casting side sealing plate and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100416878A CN101648260B (en) | 2008-08-14 | 2008-08-14 | Twin-roll thin-strip casting side sealing plate and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101648260A true CN101648260A (en) | 2010-02-17 |
| CN101648260B CN101648260B (en) | 2011-06-15 |
Family
ID=41670648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100416878A Active CN101648260B (en) | 2008-08-14 | 2008-08-14 | Twin-roll thin-strip casting side sealing plate and manufacturing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161082A (en) * | 2010-02-23 | 2011-08-24 | 上海柯瑞冶金炉料有限公司 | Side sealing plate for thin-belt continuous casting and manufacturing method |
| CN104550795A (en) * | 2015-01-07 | 2015-04-29 | 江苏沙钢集团有限公司 | Thin strip continuous casting device |
| CN106541092A (en) * | 2016-11-25 | 2017-03-29 | 江西理工大学 | A kind of twin-roll thin strip continuous casting side seal board and its using method |
| CN109877284A (en) * | 2018-08-08 | 2019-06-14 | 江苏沙钢集团有限公司 | Composite side sealing plate and side sealing device for thin strip continuous casting |
| CN113441690A (en) * | 2020-03-26 | 2021-09-28 | 宝山钢铁股份有限公司 | Supporting device for side sealing plates between rollers of double-roller thin-strip continuous casting machine |
| CN114378267A (en) * | 2021-12-15 | 2022-04-22 | 山东理工大学 | Side sealing plate applied to double-roller casting and rolling |
| CN115947610A (en) * | 2023-02-06 | 2023-04-11 | 中钢集团洛阳耐火材料研究院有限公司 | Multi-layer composite side sealing plate for twin-roll thin-strip continuous casting and preparation method thereof |
-
2008
- 2008-08-14 CN CN2008100416878A patent/CN101648260B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161082A (en) * | 2010-02-23 | 2011-08-24 | 上海柯瑞冶金炉料有限公司 | Side sealing plate for thin-belt continuous casting and manufacturing method |
| CN102161082B (en) * | 2010-02-23 | 2013-10-30 | 上海柯瑞冶金炉料有限公司 | Side sealing plate for thin-belt continuous casting and manufacturing method |
| CN104550795A (en) * | 2015-01-07 | 2015-04-29 | 江苏沙钢集团有限公司 | Thin strip continuous casting device |
| CN106541092A (en) * | 2016-11-25 | 2017-03-29 | 江西理工大学 | A kind of twin-roll thin strip continuous casting side seal board and its using method |
| CN109877284A (en) * | 2018-08-08 | 2019-06-14 | 江苏沙钢集团有限公司 | Composite side sealing plate and side sealing device for thin strip continuous casting |
| CN113441690A (en) * | 2020-03-26 | 2021-09-28 | 宝山钢铁股份有限公司 | Supporting device for side sealing plates between rollers of double-roller thin-strip continuous casting machine |
| CN114378267A (en) * | 2021-12-15 | 2022-04-22 | 山东理工大学 | Side sealing plate applied to double-roller casting and rolling |
| CN115947610A (en) * | 2023-02-06 | 2023-04-11 | 中钢集团洛阳耐火材料研究院有限公司 | Multi-layer composite side sealing plate for twin-roll thin-strip continuous casting and preparation method thereof |
| CN115947610B (en) * | 2023-02-06 | 2023-09-01 | 中钢集团洛阳耐火材料研究院有限公司 | Multilayer composite side sealing plate for double-roller thin strip continuous casting and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101648260B (en) | 2011-06-15 |
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