CN111470851A - 一种整体塞棒用棒身材料 - Google Patents
一种整体塞棒用棒身材料 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 29
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010439 graphite Substances 0.000 claims abstract description 12
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 12
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000005011 phenolic resin Substances 0.000 claims abstract description 9
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052796 boron Inorganic materials 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 6
- 229910052580 B4C Inorganic materials 0.000 claims abstract description 5
- 229910052582 BN Inorganic materials 0.000 claims abstract description 5
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 5
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000007767 bonding agent Substances 0.000 claims abstract description 4
- 229910001337 iron nitride Inorganic materials 0.000 claims abstract description 4
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000001095 magnesium carbonate Substances 0.000 claims description 6
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 6
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 33
- 239000010959 steel Substances 0.000 abstract description 33
- RWDBMHZWXLUGIB-UHFFFAOYSA-N [C].[Mg] Chemical compound [C].[Mg] RWDBMHZWXLUGIB-UHFFFAOYSA-N 0.000 abstract description 17
- 230000035939 shock Effects 0.000 abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 4
- 239000010936 titanium Substances 0.000 abstract description 4
- 229910052719 titanium Inorganic materials 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- 239000010431 corundum Substances 0.000 abstract description 2
- 239000003575 carbonaceous material Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 4
- 241001391944 Commicarpus scandens Species 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明提出了一种整体塞棒用棒身材料，由下述重量份的原料制成：镁砂60～75份，鳞片石墨20～30份，高温烧结剂1～5份，抗氧化剂2～10份，以及结合剂10～15份；高温烧结剂为硅微粉或硼玻璃；抗氧化剂为金属硅粉、碳化硅粉、碳化硼粉、氮化硅、氮化硅铁、氮化硼中的一种或三种；结合剂为酚醛树脂。本发明的有益效果如下：通过采用电熔镁砂或者烧结镁砂取代棕刚玉作为整体塞棒棒身的主要原料，可满足帘线钢等特殊钢种用整体复合塞棒材质超低铝无钛的要求；同时通过加入特定的抗氧化剂和高温烧结剂，改善了镁碳质棒身的抗热震稳定性和强度。
Description
技术领域
本发明涉及耐火材料制备技术领域，特别是指一种整体塞棒用棒身材料。
背景技术
整体塞棒是冶金行业中用于连续浇铸使用的耐火材料，主要用于中间罐的开闭，通过控制塞棒头部至中间罐水口的位置来调节进入结晶器的钢水流，进而控制中间包的开浇、关闭以及结晶器的钢流，以保证钢水在结晶器中液面的稳定和连铸工序的稳定。
整体塞棒由棒头和棒身复合而成，棒头根据使用条件分为铝碳质、镁碳质、尖晶石碳质以及锆碳质棒头，而棒身材料一般采用铝碳质。作为帘线钢生产最后环节的冶金容器，中间包用耐材的无铝化是控制帘线中钢硬质夹杂物含量的重要因素。目前，国内整体塞棒的棒身大多以铝碳材质为主，该种材质的耐火材料具有抗热震稳定性强、抗冲刷、抗侵蚀性，能够满足长寿命连续浇铸的使用要求；但该种材质在应用于帘线钢生产时，容易在钢水中引入铝质脆性夹杂，导致生产出的帘线钢钢坯拉丝过程中易断裂，难以满足钢铁企业对生产更高洁净度帘线钢的指标要求。
钢帘线在拉拔与捻股过程中会因氧化铝和氮化钛等脆性夹杂物的存在，而极易出现断裂问题。帘线钢是生产钢帘线的重要材料，整体塞棒是浇铸帘线钢的控流元件，传统整体塞棒在长时间浇钢过程中，棒身的渣侵蚀处会因钢渣侵蚀和低熔物的存在，导致棒身中的氧化铝和钛等脆性杂质混入钢水中。为防止在浇铸帘线钢过程中整体塞棒棒身中的氧化铝和钛混入钢水中，得到洁净度更纯、品质更高的帘线钢，必须将整体塞棒的棒身材料改成超低铝无钛的镁碳材质，从而降低帘线钢中氧化铝和氮化钛等脆性夹杂物的混入。但是和铝碳棒身相比，镁碳棒身具有抗热震稳定性差、强度低等缺点，导致其在使用时容易出现炸裂、断等问题，因此传统技术中镁碳材质很少作为塞棒的棒身材质。
发明内容
本发明提出一种整体塞棒用棒身材料，解决了现有技术中铝碳质棒身容易在钢水中引入铝质脆性杂质、导致帘线钢钢坯易断裂的问题。
本发明的技术方案是这样实现的：
一种整体塞棒用棒身材料，由下述重量份的原料制成：镁砂60～75份，鳞片石墨20～30份，高温烧结剂1～5份，抗氧化剂2～10份，以及结合剂10～15份；所述高温烧结剂为硅微粉或硼玻璃；所述抗氧化剂为金属硅粉、碳化硅粉、碳化硼粉、氮化硅、氮化硅铁、氮化硼中的一种或三种；所述结合剂为酚醛树脂。
作为优选，所述镁砂采用电熔镁砂或烧结镁砂，其中氧化镁的含量大于90％，二氧化硅的含量不大于10％。
作为优选，所述鳞片石墨中的碳含量不小于90％。
本发明所述的整体塞棒棒身为镁碳材料，棒头也是镁碳质，棒头和棒身之间采用过渡料，过渡料即为棒头料和棒身材料按一定比例混合均匀后的材料。
本发明采用电熔镁砂或烧结镁砂以及石墨为主要原料制备整体塞棒的棒身，通过加入适量抗氧化剂，能够降低镁碳材料的热膨胀系数，增加其抗热震稳定性；通过加入高温烧结剂硅微粉或硼玻璃，能够增加镁碳棒身材料的常温强度，增强其抗侵蚀、抗磨蚀和抗剥落能力，使其具备抗渣性能好、热震稳定性高、耐高温的特性，以满足整体塞棒棒身材料的使用要求，满足帘线钢生产的要求。
上述抗氧化剂中的氮化硅、氮化硅铁、氮化硼具有热膨胀率低，高温强度高，抗侵蚀性好等特性。
本发明的有益效果为：
本发明通过采用电熔镁砂或者烧结镁砂取代棕刚玉作为整体塞棒棒身的主要原料，可满足帘线钢等特殊钢种用整体复合塞棒材质超低铝无钛的要求；同时通过加入特定的抗氧化剂和高温烧结剂，改善了镁碳质棒身的抗热震稳定性和强度。
具体实施方式
下面将结合本发明实施例，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1
一种整体塞棒用棒身材料，由下述重量的原料制成：电熔镁砂60千克，鳞片石墨20千克，硅微粉1千克，碳化硅粉2千克，以及酚醛树脂10千克。
将上述原料按照上述重量称重后混合均匀，经造粒、干燥后与镁碳棒头进行复合，静压成型后，在非氧化气氛下于900℃温度下烧制成整体塞棒。
经过试验检测，上述制备出的整体塞棒在钢厂使用25炉、16小时后，棒身无断裂、且几乎没有被侵蚀；制品的显气孔率13％～17％，耐压强度25～40Mpa，抗折强度7～12Mpa。
实施例2
一种整体塞棒用棒身材料，由下述重量的原料制成：烧结镁砂67.5千克，鳞片石墨25千克，硅微粉3千克，碳化硼粉6千克，以及酚醛树脂12.5千克。
将上述原料按照上述重量称重后混合均匀，经造粒、干燥后与镁碳棒头进行复合，静压成型后，在非氧化气氛下于1000℃温度下烧制成整体塞棒。
经过试验检测，上述制备出的整体塞棒在钢厂使用35炉、22小时后，棒身无断裂、且几乎没有被侵蚀；制品的显气孔率13％～17％，耐压强度25～40Mpa，抗折强度7～12Mpa。
实施例3
一种整体塞棒用棒身材料，由下述重量的原料制成：烧结镁砂75千克，鳞片石墨30千克，硼玻璃5千克，氮化硅铁10千克，以及酚醛树脂15千克。
将上述原料按照上述重量称重后混合均匀，经造粒、干燥后与镁碳棒头进行复合，静压成型后，在非氧化气氛下于1100℃温度下烧制成整体塞棒。
经过试验检测，上述制备出的整体塞棒在钢厂使用70炉、28小时后，棒身无断裂、且几乎没有被侵蚀；制品的显气孔率13％～17％，耐压强度25～40Mpa，抗折强度7～12Mpa。
实施例4
一种整体塞棒用棒身材料，由下述重量的原料制成：电熔镁砂70千克，鳞片石墨28千克，硼玻璃3千克，氮化硼5千克，氮化硅2千克，金属硅粉1千克以及酚醛树脂12千克。
将上述原料按照上述重量称重后混合均匀，经造粒、干燥后与镁碳棒头进行复合，静压成型后，在非氧化气氛下于900℃温度下烧制成整体塞棒。
经过试验检测，上述制备出的整体塞棒在钢厂使用35炉、20小时后，棒身无断裂、且几乎没有被侵蚀；制品的显气孔率13％～17％，耐压强度25～40Mpa，抗折强度7～12Mpa。
实施例5
一种整体塞棒用棒身材料，由下述重量的原料制成：电熔镁砂68千克，鳞片石墨26千克，硅微粉4千克，氮化硅4千克，金属硅粉1千克，碳化硼粉1千克以及酚醛树脂13千克。
将上述原料按照上述重量称重后混合均匀，经造粒、干燥后与镁碳棒头进行复合，静压成型后，在非氧化气氛下于900℃温度下烧制成整体塞棒。
经过试验检测，上述制备出的整体塞棒在钢厂使用75炉、30小时后，棒身无断裂、且几乎没有被侵蚀；制品的显气孔率13％～17％，耐压强度25～40Mpa，抗折强度7～12Mpa。
实施例6
一种整体塞棒用棒身材料，由下述重量的原料制成：烧结镁砂72千克，鳞片石墨29千克，硼玻璃2千克，氮化硅铁4千克，碳化硅粉0.5千克，金属硅粉0.5千克，以及酚醛树脂14千克。
将上述原料按照上述重量称重后混合均匀，经造粒、干燥后与镁碳棒头进行复合，静压成型后，在非氧化气氛下于900℃温度下烧制成整体塞棒。
经过试验检测，上述制备出的整体塞棒在钢厂使用35炉、18小时后，棒身无断裂、且几乎没有被侵蚀；制品的显气孔率13％～17％，耐压强度25～40Mpa，抗折强度7～12Mpa。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (3)
1.一种整体塞棒用棒身材料，其特征在于，由下述重量份的原料制成：镁砂60～75份，鳞片石墨20～30份，高温烧结剂1～5份，抗氧化剂2～10份，以及结合剂10～15份；所述高温烧结剂为硅微粉或硼玻璃；所述抗氧化剂为金属硅粉、碳化硅粉、碳化硼粉、氮化硅、氮化硅铁、氮化硼中的一种或三种；所述结合剂为酚醛树脂。
2.根据权利要求1所述的一种整体塞棒用棒身材料，其特征在于，所述镁砂采用电熔镁砂或烧结镁砂，其中氧化镁的含量大于90％，二氧化硅的含量不大于10％。
3.根据权利要求1所述的一种整体塞棒用棒身材料，其特征在于，所述鳞片石墨中的碳含量不小于90％。
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