CN103464738B - Add corrupt split slide plate and the production method thereof of titanium - Google Patents
Add corrupt split slide plate and the production method thereof of titanium Download PDFInfo
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- CN103464738B CN103464738B CN201310365196.XA CN201310365196A CN103464738B CN 103464738 B CN103464738 B CN 103464738B CN 201310365196 A CN201310365196 A CN 201310365196A CN 103464738 B CN103464738 B CN 103464738B
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Abstract
The present invention relates to a kind of corrupt split slide plate and production method thereof of adding titanium, raw material is corundum in granules, corundum fine powder, active oxidation aluminium powder, carbide fine powder, metallic aluminium powder, metallic silicon power, metallic titanium powder, carbon black and boron carbide, additional phenolic resins.During production, powder is added mixing roll to mix; Add particulate material and phenolic resins again, mix, repressedly obtain blank; Heat-treated under medium temperature 10-14h after being dried by blank, through natural cooling, obtains the corrupt split slide plate adding titanium.The compressive resistance of product of the present invention is 140-260MPa, and high temperature break resistant intensity is 30-35MPa; Replacing part metals aluminium by introducing Titanium, the content of aluminium oxide in molten steel can be reduced, be reduced in steel pouring process and cause submersed nozzle dross to break the probability watered because aluminium oxide changes calcium aluminate into, extend its service life.Production method of the present invention is simple, and cost is lower, is beneficial to and applies.
Description
Technical field
The present invention relates to the sliding plate brick in the series of the steel ladle slide board mouth of a river in a kind of STEELMAKING PRODUCTION, particularly relate to a kind of corrupt split slide plate and production method thereof of adding titanium.
Background technology
Since the seventies in last century, one of slide gate nozzle important technology innovation having become steel and iron industry fast development, present domestic and international most ladle, tundish have all loaded onto slide gate nozzle system.Slide plate is the key components of slide gate nozzle, it is the vitals directly controlling molten steel, determine slide gate nozzle function, in use procedure, these parts wash away due to the chemical erosion and physics needing to bear over a long time high-temperature molten steel, in addition fierce and the thermal shock of transition and mechanical wear effect, service condition is comparatively harsh, simultaneously for realizing freely openable steel stream, sliding surface flatness and form factor size thereof all need to be strict with.Therefore, require that slide plate must have the characteristics such as high strength, wear-resistant, the resistance to slagging of retractory and good thermal shock stability.
Existing corrupt split slide plate introduces a large amount of metallic aluminium powder in the material, the oxygen of these metallic aluminium powders in steel pouring process easily in molten steel is combined and generates aluminium oxide, excessive aluminium oxide easily causes submersed nozzle dross to block, and this phenomenon is especially particularly evident in aluminum killed steel.This slide board fire resistant material needs to improve in intensity, thermal shock resistance and wearability etc., can not meet the instructions for use of modern steel rapid industrial development, thus the slide plate goods of compressive resistance and High anti bending strength, long service life, plasticity and good-extensibility are developed in urgent hope.
Summary of the invention
The technical problem to be solved in the present invention is: overcome defect of the prior art, proposes corrupt split slide plate and the production method thereof of a kind of good-extensibility, compressive resistance and High anti bending strength.
Technical scheme of the present invention:
A kind of corrupt split slide plate adding titanium, raw material by weight percentage consists of: the metallic aluminium powder of the active oxidation aluminium powder of the corundum in granules of 50-70%, the corundum fine powder of 5-20%, 5-15%, the carbide fine powder of 3-10%, 2-10%, the metallic silicon power of 1-5%, the metallic titanium powder of 0.5-5%, the carbon black of 0.5-5%, the boron carbide of 0.5-2%, above-mentioned raw materials total amount is 100%, the thermosetting phenolic resin of additional above-mentioned raw materials total amount 3.5-5.5%.
Described corundum in granules comprises the corundum 10-20% grain of corundum 15-20%, 0mm < particle diameter≤0.5mm of corundum 15-35%, 0.5mm < particle diameter≤1mm of corundum 5-15%, 1mm < particle diameter≤2mm of 2mm < particle diameter≤3mm, Al in corundum in granules
2o
3content>=99.0%.
Described corundum fine powder particle diameter≤0.045mm, wherein Al
2o
3content>=99.0%.
Particle diameter≤the 0.045mm of described active oxidation aluminium powder, wherein Al
2o
3content>=99.7%, Na
2o content≤0.11%.
Described carbide fine powder particle diameter≤0.045mm, wherein SiC content >=96.0%.
Described metallic aluminium powder comprises the aluminium powder two kinds of 0mm < particle diameter≤0.088mm and 0.088mm < particle diameter≤0.28mm, and the weight ratio of the two is 3:1 ~ 2:1, metal aluminum content >=99.0% wherein.
Described metallic silicon power comprises the metallic silicon power two kinds of 0.02mm < particle diameter≤0.045mm and particle diameter≤0.02mm, and the weight ratio of the two is 1:2, metallic silicon content >=99.0% wherein.
Particle diameter≤the 0.045mm of described metallic titanium powder, Titanium content >=98.0%; Particle diameter≤the 0.045mm of described boron carbide, boron carbide content >=98.0%; Particle diameter≤the 0.088mm of described carbon black, carbon content >=98.0%.
The production method of corrupt split slide plate is: take each raw material by proportioning, powder is wherein added taper mixing roll, comprise corundum fine powder, active oxidation aluminium powder, carbide fine powder, metallic silicon power, metallic aluminium powder, metallic titanium powder, carbon black, boron carbide, mix, obtain mixed powder, pack for subsequent use; Remaining particulate material is added edge runner-wet mill, mixes, then add thermosetting phenolic resin, after mixing 3-5min, add mixed powder, mixed grind 25-40min, repressed shaping, obtain blank; Blank being dried at 220-260 DEG C, finally at 780-800 degree heat-treated under medium temperature 10-14h, through naturally cooling to less than 250 DEG C, namely obtaining the corrupt split slide plate adding titanium.
Heating curve during described heat-treated under medium temperature is as follows: blank is warming up to 400 DEG C by room temperature gradually through 10h, then is warming up to 780-800 DEG C through 19h gradually by 400 DEG C.
positive beneficial effect of the present invention:
1, scientific formulation of the present invention, between component, compatibility is good, forming composition metal in conjunction with slide plate, improving a lot with simple metallic aluminium in conjunction with performance compared with slide plate by introducing Titanium.Properties of product of the present invention are as follows after testing: apparent porosity 3-8%, compressive resistance 140-260MPa, high temperature break resistant intensity 30-35MPa(1450 DEG C × 0.5h), and metallic aluminium simple under the same terms in conjunction with the high temperature break resistant intensity of slide plate less than 22MPa.
2, the present invention adopts the composition metal of metallic aluminium and Titanium to substitute single metallic aluminium in conjunction with slide plate in conjunction with slide plate, wherein Titanium is as the antioxidant in slide plate, simultaneously it is also the important element in steel and alloy, this material not only can significantly improve the resistance to elevated temperatures of goods, extend its service life, appropriate Titanium can also improve plasticity and the extensibility of steel simultaneously.
3, the present invention replaces part metals aluminium by introducing Titanium, can reduce the content of aluminium oxide in molten steel, is reduced in steel pouring process and causes submersed nozzle dross to break the probability watered because aluminium oxide changes calcium aluminate into, extend its service life.
4, have strict demand to the size of raw material granularity and proportioning in present invention process, grain size distribution is reasonable; Can be reacted with the nitrogen in air and the carbon in material by heat-treated under medium temperature titanium and generate titanium carbide and titanium nitride, the resistance to elevated temperatures of goods can be significantly improved, suitable treatment temperature effectively can control the generation of aluminium carbide and aluminium nitride simultaneously, can play inhibitory action to the aquation of corrupt split slide plate.
5, corrupt split slide plate production method of the present invention is simple, and cost is lower, is beneficial to and applies.
Detailed description of the invention
Following examples are to further illustrate the present invention, do not represent any limitation of the invention.Wen Zhongru is not particularly illustrated, and percentage composition is wherein weight percentage.
embodiment 1: a kind of corrupt split slide plate adding titanium, raw material by weight percentage consists of: the corundum in granules of 65%, the corundum fine powder of 10%, 5% active oxidation aluminium powder, 6% carbide fine powder, 5% metallic aluminium powder, 3% metallic silicon power, metallic titanium powder 3%, 2% carbon black, 1% boron carbide, above-mentioned raw materials total amount is 100%, the thermosetting phenolic resin of additional 4.2%.
Wherein corundum in granules comprises corundum 10%, the corundum 20% of 1mm < particle diameter≤2mm, the corundum 20% of 0.5mm < particle diameter≤1mm, 15%, the corundum of 0mm < particle diameter≤0.5mm of 2mm < particle diameter≤3mm, Al in corundum in granules
2o
3content>=99.0%.
Corundum fine powder particle diameter≤0.045mm, wherein Al
2o
3content>=99.0%.
Production method: take each raw material by proportioning, powder is wherein added taper mixing roll, comprises corundum fine powder, active oxidation aluminium powder, carbide fine powder, metallic silicon power, metallic aluminium powder, metallic titanium powder, carbon black, boron carbide, mix, obtain mixed powder, pack for subsequent use; Remaining particulate material is joined in edge runner-wet mill and mixes, then add phenolic resins, mixing 3-5min, then add the powder mixed, mixed grind 25-40min, compressing on friction press, obtain blank; Blank being dried under 220-260 DEG C of condition, finally at 780-800 degree heat-treated under medium temperature 10-14h, through naturally cooling to less than 250 DEG C, namely obtaining the corrupt split slide plate adding titanium.
Heating curve during heat-treated under medium temperature is as follows: heated by blank, be warming up to 400 DEG C gradually, then be warming up to 780-800 DEG C through 19h gradually by 400 DEG C by room temperature through 10h.
embodiment 2: the corrupt split slide plate adding titanium, raw material composition is in table 1.
In raw material 65% corundum in granules: comprise the corundum 5% of 2mm < particle diameter≤3mm, the corundum 25% of 1mm < particle diameter≤2mm, the corundum 15% of 0.5mm < particle diameter≤1mm, 20%, the corundum of 0mm < particle diameter≤0.5mm, Al in corundum in granules
2o
3content>=99.0%.
Corundum fine powder particle diameter≤0.045mm, wherein Al
2o
3content>=99.0%; Particle diameter≤the 0.045mm of active oxidation aluminium powder, wherein Al
2o
3content>=99.7%, Na
2o content≤0.11%.
Carbide fine powder particle diameter≤0.045mm, wherein SiC content >=96.0%; Metallic aluminium powder comprises the aluminium powder two kinds of 0mm < particle diameter≤0.088mm and 0.088mm < particle diameter≤0.28mm, and the weight ratio of the two is 3:1 ~ 2:1, metal aluminum content >=99.0% wherein.
Metallic silicon power comprises the metallic silicon power two kinds of 0.02mm < particle diameter≤0.045mm and particle diameter≤0.02mm, and the weight ratio of the two is 1:2, metallic silicon content >=99.0%.
Metallic titanium powder particle diameter≤0.045mm, Titanium content >=98.0%; Boron carbide particle diameter≤0.045mm, boron carbide content >=98.0%; Particle size carbon black≤0.088mm, wherein carbon content >=98.0%.
Production method: first take each raw material by proportioning, adds taper mixing roll by powder material wherein and mixes, pack; Remaining particulate material joined in edge runner-wet mill and mix, then add phenolic resins, mixing 3-5min, then adds the powder material mixed grind 25-40min mixed, compressing on friction press, obtains blank; Blank being dried under 220-260 DEG C of condition, finally at 780-800 DEG C of heat-treated under medium temperature 12-14h, through naturally cooling to less than 250 DEG C, namely obtaining the corrupt split slide plate adding titanium.
Heating curve during heat-treated under medium temperature is as follows: blank is warming up to 400 DEG C by room temperature gradually through 10h, then is warming up to 780-800 DEG C through 19h gradually by 400 DEG C.
embodiment 3: the corrupt split slide plate adding titanium, raw material composition is in table 1.
In raw material 65% corundum in granules: comprise the corundum 15% of 2mm < particle diameter≤3mm, the corundum 25% of 1mm < particle diameter≤2mm, the corundum 15% of 0.5mm < particle diameter≤1mm, 10%, the corundum of 0mm < particle diameter≤0.5mm, Al in corundum in granules
2o
3content>=99.0%.Other requirements and production method are with example 1.
embodiment 4: the corrupt split slide plate adding titanium, raw material composition is in table 1.
In raw material 56% corundum in granules: comprise the corundum 10% of 2mm < particle diameter≤3mm, the corundum 15% of 1mm < particle diameter≤2mm, the corundum 15% of 0.5mm < particle diameter≤1mm, 16%, the corundum of 0mm < particle diameter≤0.5mm, Al in corundum in granules
2o
3content>=99.0%.Other requirements and production method are with example 1.
embodiment 5: the corrupt split slide plate adding titanium, raw material composition is in table 1.
In raw material 50% corundum in granules: comprise the corundum 8% of 2mm < particle diameter≤3mm, the corundum 15% of 1mm < particle diameter≤2mm, the corundum 15% of 0.5mm < particle diameter≤1mm, 12%, the corundum of 0mm < particle diameter≤0.5mm, Al in corundum in granules
2o
3content>=99.0%.Other requirements and production method are with example 1.
embodiment 6: the corrupt split slide plate adding titanium, raw material composition is in table 1.
In raw material 70% corundum in granules: comprise the corundum 12% of 2mm < particle diameter≤3mm, the corundum 33% of 1mm < particle diameter≤2mm, the corundum 15% of 0.5mm < particle diameter≤1mm, 10%, the corundum of 0mm < particle diameter≤0.5mm, Al in corundum in granules
2o
3content>=99.0%.Other requirements and production method are with example 2.
embodiment 7: the corrupt split slide plate adding titanium, raw material composition is in table 1.
In raw material 60% corundum in granules: comprise the corundum 10% of 2mm < particle diameter≤3mm, the corundum 20% of 1mm < particle diameter≤2mm, the corundum 20% of 0.5mm < particle diameter≤1mm, 10%, the corundum of 0mm < particle diameter≤0.5mm, Al in corundum in granules
2o
3content>=99.0%.Other requirements and production method are with example 2.
embodiment 8: the corrupt split slide plate adding titanium, raw material composition is in table 1.
In raw material 68% corundum in granules: comprise the corundum 8% of 2mm < particle diameter≤3mm, the corundum 25% of 1mm < particle diameter≤2mm, the corundum 15% of 0.5mm < particle diameter≤1mm, 20%, the corundum of 0mm < particle diameter≤0.5mm, Al in corundum in granules
2o
3content>=99.0%.Other requirements and production method are with example 2.
Table 1: the material composition (by weight percentage, %) of each embodiment middle slide plate
Claims (9)
1. one kind is added the production method of the corrupt split slide plate of titanium, it is characterized in that: by weight percentage, raw material consists of: the metallic aluminium powder of the active oxidation aluminium powder of the corundum in granules of 50-70%, the corundum fine powder of 5-20%, 5-15%, the carbide fine powder of 3-10%, 2-10%, the metallic silicon power of 1-5%, the metallic titanium powder of 0.5-5%, the carbon black of 0.5-5%, the boron carbide of 0.5-2%, above-mentioned raw materials total amount is 100%, the thermosetting phenolic resin of additional above-mentioned raw materials total amount 3.5-5.5%;
Take each raw material by proportioning, powder is wherein added taper mixing roll, comprise corundum fine powder, active oxidation aluminium powder, carbide fine powder, metallic silicon power, metallic aluminium powder, metallic titanium powder, carbon black, boron carbide, mix, obtain mixed powder, pack for subsequent use; Remaining particulate material is added edge runner-wet mill, mixes, then add thermosetting phenolic resin, after mixing 3-5min, add mixed powder, mixed grind 25-40min, repressed shaping, obtain blank; Blank being dried at 220-260 DEG C, finally at 780-800 degree heat-treated under medium temperature 10-14h, through naturally cooling to less than 250 DEG C, namely obtaining the corrupt split slide plate adding titanium.
2. the production method of corrupt split slide plate according to claim 1, it is characterized in that: described corundum in granules comprises the corundum 10-20% grain of corundum 15-20%, 0mm < particle diameter≤0.5mm of corundum 15-35%, 0.5mm < particle diameter≤1mm of corundum 5-15%, 1mm < particle diameter≤2mm of 2mm < particle diameter≤3mm, Al in corundum in granules
2o
3content>=99.0%.
3. the production method of corrupt split slide plate according to claim 1, is characterized in that: described corundum fine powder particle diameter≤0.045mm, wherein Al
2o
3content>=99.0%.
4. the production method of corrupt split slide plate according to claim 1, is characterized in that: the particle diameter≤0.045mm of described active oxidation aluminium powder, wherein Al
2o
3content>=99.7%, Na
2o content≤0.11%.
5. the production method of corrupt split slide plate according to claim 1, is characterized in that: described carbide fine powder particle diameter≤0.045mm, wherein SiC content >=96.0%.
6. the production method of the corrupt split slide plate according to any one of claim 1-5, it is characterized in that: described metallic aluminium powder comprises the aluminium powder two kinds of 0mm < particle diameter≤0.088mm and 0.088mm < particle diameter≤0.28mm, the weight ratio of the two is 3:1 ~ 2:1, metal aluminum content >=99.0% wherein.
7. the production method of corrupt split slide plate according to claim 6, it is characterized in that: described metallic silicon power comprises the metallic silicon power two kinds of 0.02mm < particle diameter≤0.045mm and particle diameter≤0.02mm, the weight ratio of the two is 1:2, metallic silicon content >=99.0% wherein.
8. the production method of corrupt split slide plate according to claim 7, is characterized in that: the particle diameter≤0.045mm of described metallic titanium powder, Titanium content >=98.0%; Particle diameter≤the 0.045mm of described boron carbide, boron carbide content >=98.0%; Particle diameter≤the 0.088mm of described carbon black, carbon content >=98.0%.
9. the production method of corrupt split slide plate according to claim 1, is characterized in that: heating curve during described heat-treated under medium temperature is as follows: blank is warming up to 400 DEG C by room temperature gradually through 10h, then is warming up to 780-800 DEG C through 19h gradually by 400 DEG C.
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| CN111410519B (en) * | 2020-04-24 | 2022-10-04 | 河南熔金高温材料股份有限公司 | Aluminum titanate-added Al 2 O 3 -C sliding brick and production method thereof |
| CN115057692B (en) * | 2022-06-08 | 2023-04-18 | 郑州海迈高温材料研究院有限公司 | Aluminum-carbon sliding brick added with ferrotitanium alloy and production method thereof |
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| EP0299441A2 (en) * | 1987-07-15 | 1989-01-18 | Kurosaki Refractories Co. Ltd. | Slidding gate nozzle for special steel |
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