CN113683411A - 一种双辊薄带连铸用陶瓷侧封板及其制备方法 - Google Patents

一种双辊薄带连铸用陶瓷侧封板及其制备方法 Download PDF

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CN113683411A
CN113683411A CN202110951978.6A CN202110951978A CN113683411A CN 113683411 A CN113683411 A CN 113683411A CN 202110951978 A CN202110951978 A CN 202110951978A CN 113683411 A CN113683411 A CN 113683411A
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parts
reinforcing plate
substrate
nitride
raw materials
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CN113683411B (zh
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巩鹏程
王前
宫伯昌
任学美
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Shandong Pengcheng Ceramic New Material Technology Co ltd
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Abstract

本发明公开的属于双辊薄带连铸技术领域，具体为一种双辊薄带连铸用陶瓷侧封板，包括基板、加强板与烧结助剂，所述基板与加强板上均开设有通孔，且通孔的位置相对应，所述基板由以下原料制成：BN‑ZrO2、碳化锆与碳化硅，所述加强板由以下原料制成：二维六方氮化硼、氧化物与氮化物，本发明基板具有低热导率，良好的抗热震性能与抗腐蚀性能，加强板具有良好的抗热震性能、耐磨损性能与抗腐蚀性能，基板与加强板通过AlN作为烧结助剂，两者进行热压烧结，得到陶瓷侧封板，使得侧封板的整体性能更好，使用寿命更长，通过在基板与加强板上开设有通孔，并通过在基板与加强板之间、通孔内加入烧结助剂，能够保证了基板与加强板之间整体结构更加稳定。

Description

一种双辊薄带连铸用陶瓷侧封板及其制备方法
技术领域
本发明涉及双辊薄带连铸技术领域，具体为一种双辊薄带连铸用陶瓷侧封板及其制备方法。
背景技术
双辊薄带连铸技术是一种新型的薄带钢生产工艺，作为钢铁工业发展方向的前沿技术，可不经连铸、加热和热轧等生产工序，直接由液态钢水生产出厚度为1～5mm的薄带坯，在短时间内完成从液态金属到固态薄带的全部过程。另外，在获得特殊性能方面具有独特优势，可实现高性能钢材的减量化生产途径，得到了世界钢铁界的广泛重视，但仍需要不断完善以尽快实现工业化生产。
侧封板是在结晶辊两端添加的防漏部件，起到约束金属液体，促进薄带成型，保证薄带边缘质量等作用。但结晶辊的工况要求较为复杂，对侧封板材料的机械性能和理化性能稳定性均提出了较为苛刻的要求。
现有的侧封板大都只具有耐磨损性能、抗钢水侵蚀性能与抗震性能，其不具备较低的导热率，从而会导致在连铸的过程中容易在侧封板表面发生过冷现象而产生冷块，降低了侧封板的使用寿命和使用安全性，影响产品质量和整体生产线的运行。
发明内容
本发明的目的在于提供一种双辊薄带连铸用陶瓷侧封板及其制备方法，以解决上述背景技术中提出的连铸的过程中容易在侧封板表面发生过冷现象而产生冷块的问题。
为实现上述目的，本发明提供如下技术方案：一种双辊薄带连铸用陶瓷侧封板，包括基板、加强板与烧结助剂，所述基板与加强板上均开设有通孔，且通孔的位置相对应，所述基板由以下重量份数的原料制成：50-70份的BN-ZrO2、10-20份的碳化锆与6-12份的碳化硅，所述加强板由以下重量份数的原料制成：40-60份的二维六方氮化硼、2-10份的氧化物与2-15份的氮化物，所述氧化物包括氧化铝、氧化镁、二氧化硅、二氧化钛，所述氮化物包括氮化硅、氮化锆、氮化锡，所述烧结助剂由以下重量份数的原料制成：40-60份的氮化铝、20-30份的基板半成品粉末与20-30份的加强板半成品粉末。
优选的，所述基板由以下重量份数的原料制成：50份的BN-ZrO2、11份的碳化锆与8份的碳化硅，所述加强板由以下重量份数的原料制成：42份的二维六方氮化硼、3份的氧化物与2份的氮化物。
优选的，所述基板由以下重量份数的原料制成：61份的BN-ZrO2、9份的碳化锆与8份的碳化硅，所述加强板由以下重量份数的原料制成：52份的二维六方氮化硼、7份的氧化物与6份的氮化物。
优选的，所述基板由以下重量份数的原料制成：70份的BN-ZrO2、19份的碳化锆与12份的碳化硅，所述加强板由以下重量份数的原料制成：60份的二维六方氮化硼、10份的氧化物与13份的氮化物。
所述基板的制备方法包括以下步骤：
步骤1：按照重量份数称取BN-ZrO2、碳化锆与碳化硅，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-50小时后得到混合均匀的浆料，将浆料在90-95℃下真空干燥20-30h，并将其过200目筛得到基板半成品混合粉末；
步骤2：将步骤1中的混合粉末装入热压模具中进行干压成型，然后在真空惰性气氛保护下，在20-45MPa的压力下、1500-1800℃下热压烧结1-3小时得到具有孔状结构的基板。
所述加强板的制备方法包括以下步骤：
步骤A：按照重量份数称取二维六方氮化硼、氧化物与氮化物，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-60小时后得到混合均匀的浆料，将浆料在100-120℃下真空干燥20-30h，并将其过200目筛得到加强板半成品混合粉末；
步骤B：将步骤1中的混合粉末装入热压模具中进行干压成型，然后在真空惰性气氛保护下，在20-30MPa的压力下、1500-1850℃下热压烧结1-3小时得到具有孔状结构的加强板。
一种制备双辊薄带连铸用陶瓷侧封板的方法，包括以下步骤：
步骤一：按照重量份数称取氮化铝、基板半成品粉末与加强板半成品粉末，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-60小时后得到混合均匀的浆料，将浆料在100-120℃下真空干燥20-30h，并将其过200目筛得到混合粉末；
步骤二：准备一块基板与一块加强板，并将步骤一中的混合粉末平铺在基板与加强板之间装入热压模具中，同时将剩余的混合粉末放入基板与加强板中的通孔中，采用真空惰性气氛保护，在10-20MPa的压力下，以100℃/min的升温速率升温，在800℃开始施加压力至20-30MPa，然后以200℃/min的升温速率升温至1500℃，在1500℃时加压至50-60MPa，保温保压1h后，缓慢冷却至室温，并同时卸载压力，即得双辊薄带连铸用陶瓷侧封板。
优选的，所述步骤二中平铺在基板与加强板之间混合粉末的厚度为1-2cm。
与现有技术相比，本发明的有益效果是：
1)本发明基板具有低热导率，良好的抗热震性能与抗腐蚀性能，加强板具有良好的抗热震性能、耐磨损性能与抗腐蚀性能，基板与加强板通过AlN作为烧结助剂，两者进行热压烧结，得到陶瓷侧封板，使得侧封板的整体性能更好，使用寿命更长。
2)本发明通过在基板与加强板上开设有通孔，并通过在基板与加强板之间、通孔内加入烧结助剂，能够保证了基板与加强板之间整体结构更加稳定。
具体实施方式
下面将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做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。
本发明提供一种技术方案：
实施例1：
一种双辊薄带连铸用陶瓷侧封板，包括基板、加强板与烧结助剂，所述基板与加强板上均开设有通孔，且通孔的位置相对应，所述基板由以下重量份数的原料制成：50份的BN-ZrO2、11份的碳化锆与8份的碳化硅，所述加强板由以下重量份数的原料制成：42份的二维六方氮化硼、3份的氧化物与2份的氮化物，所述氧化物包括氧化铝、氧化镁、二氧化硅、二氧化钛，所述氮化物包括氮化硅、氮化锆、氮化锡，所述烧结助剂由以下重量份数的原料制成：40-60份的氮化铝、20-30份的基板半成品粉末与20-30份的加强板半成品粉末。
一种制备双辊薄带连铸用陶瓷侧封板的方法，包括以下步骤：
步骤一：按照重量份数称取氮化铝、基板半成品粉末与加强板半成品粉末，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-60小时后得到混合均匀的浆料，将浆料在100-120℃下真空干燥20-30h，并将其过200目筛得到混合粉末；
步骤二：准备一块基板与一块加强板，并将步骤一中的混合粉末平铺在基板与加强板之间装入热压模具中，同时将剩余的混合粉末放入基板与加强板中的通孔中，采用真空惰性气氛保护，在10-20MPa的压力下，以100℃/min的升温速率升温，在800℃开始施加压力至20-30MPa，然后以200℃/min的升温速率升温至1500℃，在1500℃时加压至50-60MPa，保温保压1h后，缓慢冷却至室温，并同时卸载压力，即得双辊薄带连铸用陶瓷侧封板。
实施例2：
一种双辊薄带连铸用陶瓷侧封板，包括基板、加强板与烧结助剂，所述基板与加强板上均开设有通孔，且通孔的位置相对应，所述基板由以下重量份数的原料制成：61份的BN-ZrO2、9份的碳化锆与8份的碳化硅，所述加强板由以下重量份数的原料制成：52份的二维六方氮化硼、7份的氧化物与6份的氮化物，所述氧化物包括氧化铝、氧化镁、二氧化硅、二氧化钛，所述氮化物包括氮化硅、氮化锆、氮化锡，所述烧结助剂由以下重量份数的原料制成：40-60份的氮化铝、20-30份的基板半成品粉末与20-30份的加强板半成品粉末。
一种制备双辊薄带连铸用陶瓷侧封板的方法，包括以下步骤：
步骤一：按照重量份数称取氮化铝、基板半成品粉末与加强板半成品粉末，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-60小时后得到混合均匀的浆料，将浆料在100-120℃下真空干燥20-30h，并将其过200目筛得到混合粉末；
步骤二：准备一块基板与一块加强板，并将步骤一中的混合粉末平铺在基板与加强板之间装入热压模具中，同时将剩余的混合粉末放入基板与加强板中的通孔中，采用真空惰性气氛保护，在10-20MPa的压力下，以100℃/min的升温速率升温，在800℃开始施加压力至20-30MPa，然后以200℃/min的升温速率升温至1500℃，在1500℃时加压至50-60MPa，保温保压1h后，缓慢冷却至室温，并同时卸载压力，即得双辊薄带连铸用陶瓷侧封板。
实施例3：
一种双辊薄带连铸用陶瓷侧封板，包括基板、加强板与烧结助剂，所述基板与加强板上均开设有通孔，且通孔的位置相对应，所述基板由以下重量份数的原料制成：70份的BN-ZrO2、19份的碳化锆与12份的碳化硅，所述加强板由以下重量份数的原料制成：60份的二维六方氮化硼、10份的氧化物与13份的氮化物，所述氧化物包括氧化铝、氧化镁、二氧化硅、二氧化钛，所述氮化物包括氮化硅、氮化锆、氮化锡，所述烧结助剂由以下重量份数的原料制成：40-60份的氮化铝、20-30份的基板半成品粉末与20-30份的加强板半成品粉末。
一种制备双辊薄带连铸用陶瓷侧封板的方法，包括以下步骤：
步骤一：按照重量份数称取氮化铝、基板半成品粉末与加强板半成品粉末，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-60小时后得到混合均匀的浆料，将浆料在100-120℃下真空干燥20-30h，并将其过200目筛得到混合粉末；
步骤二：准备一块基板与一块加强板，并将步骤一中的混合粉末平铺在基板与加强板之间装入热压模具中，同时将剩余的混合粉末放入基板与加强板中的通孔中，采用真空惰性气氛保护，在10-20MPa的压力下，以100℃/min的升温速率升温，在800℃开始施加压力至20-30MPa，然后以200℃/min的升温速率升温至1500℃，在1500℃时加压至50-60MPa，保温保压1h后，缓慢冷却至室温，并同时卸载压力，即得双辊薄带连铸用陶瓷侧封板。
所述基板的制备方法包括以下步骤：
步骤1：按照重量份数称取BN-ZrO2、碳化锆与碳化硅，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-50小时后得到混合均匀的浆料，将浆料在90-95℃下真空干燥20-30h，并将其过200目筛得到基板半成品混合粉末；
步骤2：将步骤1中的混合粉末装入热压模具中进行干压成型，然后在真空惰性气氛保护下，在20-45MPa的压力下、1500-1800℃下热压烧结1-3小时得到具有孔状结构的基板。
所述加强板的制备方法包括以下步骤：
步骤A：按照重量份数称取二维六方氮化硼、氧化物与氮化物，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-60小时后得到混合均匀的浆料，将浆料在100-120℃下真空干燥20-30h，并将其过200目筛得到加强板半成品混合粉末；
步骤B：将步骤1中的混合粉末装入热压模具中进行干压成型，然后在真空惰性气氛保护下，在20-30MPa的压力下、1500-1850℃下热压烧结1-3小时得到具有孔状结构的加强板。
实施例一 实施例二 实施例三
热导率(W/m K) 18 20 21
原板层厚度(mm) 13.2 13.1 13.2
侵蚀层厚度(mm) 1.3 1.2 1.3
硬度/HK 420 423 421
抗弯强度/MPa 202 201 200
上表为本发明实施例1-实施例3所制备得到的陶瓷侧封板的检测数值，根据上表数值可得，本发明的陶瓷侧封板具有低导热率，良好的耐磨损性能、抗腐蚀性能。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点，对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明；因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (8)

1.一种双辊薄带连铸用陶瓷侧封板，其特征在于：包括基板、加强板与烧结助剂，所述基板与加强板上均开设有通孔，且通孔的位置相对应，所述基板由以下重量份数的原料制成：50-70份的BN-ZrO2、10-20份的碳化锆与6-12份的碳化硅，所述加强板由以下重量份数的原料制成：40-60份的二维六方氮化硼、2-10份的氧化物与2-15份的氮化物，所述氧化物包括氧化铝、氧化镁、二氧化硅、二氧化钛，所述氮化物包括氮化硅、氮化锆、氮化锡，所述烧结助剂由以下重量份数的原料制成：40-60份的氮化铝、20-30份的基板半成品粉末与20-30份的加强板半成品粉末。
2.根据权利要求1所述的一种双辊薄带连铸用陶瓷侧封板，其特征在于：所述基板由以下重量份数的原料制成：50份的BN-ZrO2、11份的碳化锆与8份的碳化硅，所述加强板由以下重量份数的原料制成：42份的二维六方氮化硼、3份的氧化物与2份的氮化物。
3.根据权利要求1所述的一种双辊薄带连铸用陶瓷侧封板，其特征在于：所述基板由以下重量份数的原料制成：61份的BN-ZrO2、9份的碳化锆与8份的碳化硅，所述加强板由以下重量份数的原料制成：52份的二维六方氮化硼、7份的氧化物与6份的氮化物。
4.根据权利要求1所述的一种双辊薄带连铸用陶瓷侧封板，其特征在于：所述基板由以下重量份数的原料制成：70份的BN-ZrO2、19份的碳化锆与12份的碳化硅，所述加强板由以下重量份数的原料制成：60份的二维六方氮化硼、10份的氧化物与13份的氮化物。
5.根据权利要求1-4任一项所述的一种双辊薄带连铸用陶瓷侧封板，其特征在于：所述基板的制备方法包括以下步骤：
步骤1：按照重量份数称取BN-ZrO2、碳化锆与碳化硅，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-50小时后得到混合均匀的浆料，将浆料在90-95℃下真空干燥20-30h，并将其过200目筛得到基板半成品混合粉末；
步骤2：将步骤1中的混合粉末装入热压模具中进行干压成型，然后在真空惰性气氛保护下，在20-45MPa的压力下、1500-1800℃下热压烧结1-3小时得到具有孔状结构的基板。
6.根据权利要求1-4任一项所述的一种双辊薄带连铸用陶瓷侧封板，其特征在于：所述加强板的制备方法包括以下步骤：
步骤A：按照重量份数称取二维六方氮化硼、氧化物与氮化物，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-60小时后得到混合均匀的浆料，将浆料在100-120℃下真空干燥20-30h，并将其过200目筛得到加强板半成品混合粉末；
步骤B：将步骤1中的混合粉末装入热压模具中进行干压成型，然后在真空惰性气氛保护下，在20-30MPa的压力下、1500-1850℃下热压烧结1-3小时得到具有孔状结构的加强板。
7.一种制备权利要求1-4任一项所述一种双辊薄带连铸用陶瓷侧封板的方法，其特征在于：包括以下步骤：
步骤一：按照重量份数称取氮化铝、基板半成品粉末与加强板半成品粉末，并将上述原料混合均匀后向内加入无水乙醇，并球磨40-60小时后得到混合均匀的浆料，将浆料在100-120℃下真空干燥20-30h，并将其过200目筛得到混合粉末；
步骤二：准备一块基板与一块加强板，并将步骤一中的混合粉末平铺在基板与加强板之间装入热压模具中，同时将剩余的混合粉末放入基板与加强板中的通孔中，采用真空惰性气氛保护，在10-20MPa的压力下，以100℃/min的升温速率升温，在800℃开始施加压力至20-30MPa，然后以200℃/min的升温速率升温至1500℃，在1500℃时加压至50-60MPa，保温保压1h后，缓慢冷却至室温，并同时卸载压力，即得双辊薄带连铸用陶瓷侧封板。
8.根据权利要求7所述的一种双辊薄带连铸用陶瓷侧封板的制备方法，其特征在于：所述步骤二中平铺在基板与加强板之间混合粉末的厚度为1-2cm。
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