CN112299857A - 一种风阀阀体材料及其制备工艺 - Google Patents

一种风阀阀体材料及其制备工艺 Download PDF

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CN112299857A
CN112299857A CN202011276469.XA CN202011276469A CN112299857A CN 112299857 A CN112299857 A CN 112299857A CN 202011276469 A CN202011276469 A CN 202011276469A CN 112299857 A CN112299857 A CN 112299857A
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CN112299857B (zh
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李祥广
史少鹏
李文志
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Dezhou Qiyuan Air Conditioning Equipment Co ltd
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Abstract

本发明公开了一种风阀阀体材料及其制备工艺，包括下列重量份数的组分：氮化硅粉末70‑90份、氧化镁18‑28份、氧化铝12‑18份、氟化镁10‑15份、三氧化二铁5‑15份、贝壳粉5‑8份、微晶玻璃5‑8份、炭黑20‑25份、硅酸铝5‑10份、硅酮树脂12‑15份、高岭土3‑5份、聚乙二醇3‑6份、硅烷偶联剂2‑5份、分散剂1‑2份、消泡剂1‑2份、碳纤维1‑2份、水30‑40份，同时公开了一种风阀阀体材料的制备工艺。本发明属于风阀阀体领域，具体提供了一种耐热冲击性优良、强度高且具有一定高温强度的风阀阀体材料及其制备工艺。

Description

一种风阀阀体材料及其制备工艺
技术领域
本发明属于风阀阀体领域，具体是指一种风阀阀体材料及其制备工艺。
背景技术
风阀阀体是高炉炼铁、焚烧炉、化工设备等领域中必不可少的设备，其中在高炉炼铁中，对风阀阀体的高温强度、耐热冲击性、刚性、耐疲劳性都要求优异的性能，在风炉燃烧期，风阀关闭，使风炉和风管道隔离开。风阀长期承受热对流和热辐射，是高炉设备中工作环境最恶劣的设备之一。而风阀阀体直接固定在高温的热风管道上，长期承受热交变负荷。在送风期，风阀阀板提升至阀盖内，风阀阀体内侧面及密封面受高速热风涡流冲刷，致使比其它部位提前氧化、龟裂。在燃烧期，风阀关闭，阀体朝向热风炉的一面承受热风的侵蚀，而朝向热风主管道侧则承受热风高压，因此阀体的密封面承受严峻的考验。阀体的寿命决定了阀门的整体寿命，研制一种高性能的风阀阀体，对提高寿命、提高设备利用率、减少高炉休风次数、节约能源、提高炼铁效率、加速高炉系统的发展至关重要。
发明内容
针对上述情况，本发明提供了一种耐热冲击性优良、强度高且具有一定高温强度的风阀阀体材料及其制备工艺。
本发明采取的技术方案如下：本发明一种风阀阀体材料，其特征在于，包括下列重量份数的组分：氮化硅粉末70-90份、氧化镁18-28份、氧化铝12-18份、氟化镁10-15份、三氧化二铁5-15份、贝壳粉5-8份、微晶玻璃5-8份、炭黑20-25份、硅酸铝5-10份、硅酮树脂12-15份、高岭土3-5份、聚乙二醇3-6份、硅烷偶联剂2-5份、分散剂1-2份、消泡剂1-2份、碳纤维1-2份、水30-40份。
作为优选地，一种风阀阀体材料，包括下列重量份数的组分：氮化硅粉末70份、氧化镁18份、氧化铝12份、氟化镁10份、三氧化二铁5份、贝壳粉5份、微晶玻璃5份、炭黑20份、硅酸铝5份、硅酮树脂12份、高岭土3份、聚乙二醇3份、硅烷偶联剂2份、分散剂1份、消泡剂1份、碳纤维1份、水30份。
作为优选地，一种风阀阀体材料，包括下列重量份数的组分：氮化硅粉末80份、氧化镁26份、氧化铝17份、氟化镁12.5份、三氧化二铁10份、贝壳粉6.5份、微晶玻璃6.5份、炭黑22.5份、硅酸铝7.5份、硅酮树脂13.5份、高岭土4份、聚乙二醇4.5份、硅烷偶联剂3.5份、分散剂1.5份、消泡剂1.5份、碳纤维1.5份、水35份。
作为优选地，一种风阀阀体材料，包括下列重量份数的组分：氮化硅90份、氧化镁28份、氧化铝22份、氟化镁15份、三氧化二铁15份、贝壳粉8份、微晶玻璃8份、炭黑25份、硅酸铝10份、硅酮树脂15份、高岭土5份、聚乙二醇6份、硅烷偶联剂5份、分散剂2份、消泡剂2份、碳纤维2份、水40份。
进一步地，所述分散剂为聚丙烯酸铵分散剂。
进一步地，所述微晶玻璃的化学成分为SiO2：60-80％，Al2O3：0-3.5％，Li2O：7-15％，K2O：1.5-4％。
一种风阀阀体材料的制备方法，其特征在于，具体包括下列步骤：
(1)配料：称取或量取对应重量的氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水备用；
(2)球磨：依次在球磨机内加入氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水，混合搅拌4小时，得到混合均匀的浆料；
(3)干燥：将球磨后的浆料干燥2小时，干燥至恒温备用，得到粉料；
(4)细磨：将干燥后的粉料细磨，得到物料；
(5)过筛：将细磨后的物料过100-150目筛，如部分物料细度达不到100-150则继续对其细磨，得到粉状物料；
(6)装模：将过筛后的粉状物料装入模具中，使用捣棒将表面压实，对模具预置20MPa的压力，并抽真空至4Pa；
(7)烧结：开始加热加压，在烧结至500-800℃时，升压至40MPa，在烧结至800-1300℃后，升压至50MPa，在烧结至1300-1500℃后，升压至60MPa，30分钟后冷却即可，待其完全固化后脱模。
进一步地，所述干燥温度为80℃。
本发明一种风阀阀体材料及其制备工艺，主要采用氮化硅材料，作为一种重要的结构材料，氮化硅与其它无机酸反应，抗腐蚀能力强，高温时抗氧化，而且它还能抵抗冷热冲击，既有优良的高温结构材料，又是新型的功能材料，通过加入贝壳粉和硅酸铝，提升了阀体的耐火性，有效减小风炉在燃烧时对阀体的热负荷。炭黑粉末填充在阀体内，可有效提升阀体的强度，高岭土作为烧结剂使高温强度提高，微晶玻璃和贝壳粉的加入进一步提升了阀体的耐热冲击性，在耐热性优异的同时，还能够保持高温下的机械强度。
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。
实施例1：
一种风阀阀体材料，包括下列重量份数的组分：氮化硅粉末70份、氧化镁18份、氧化铝12份、氟化镁10份、三氧化二铁5份、贝壳粉5份、微晶玻璃5份、炭黑20份、硅酸铝5份、硅酮树脂12份、高岭土3份、聚乙二醇3份、硅烷偶联剂2份、分散剂1份、消泡剂1份、碳纤维1份、水30份，分散剂为聚丙烯酸铵分散剂，微晶玻璃的化学成分为SiO2：60-80％，Al2O3：0-3.5％，Li2O：7-15％，K2O：1.5-4％。
一种风阀阀体材料的制备方法，其特征在于，具体包括下列步骤：
(1)配料：称取或量取对应重量的氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水备用；
(2)球磨：依次在球磨机内加入氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水，混合搅拌4小时，得到混合均匀的浆料；
(3)干燥：将球磨后的浆料干燥2小时，干燥至恒温备用，得到粉料；
(4)细磨：将干燥后的粉料细磨，得到物料；
(5)过筛：将细磨后的物料过100-150目筛，如部分物料细度达不到100-150则继续对其细磨，得到粉状物料；
(6)装模：将过筛后的粉状物料装入模具中，使用捣棒将表面压实，对模具预置20MPa的压力，并抽真空至4Pa；
(7)烧结：开始加热加压，在烧结至500-800℃时，升压至40MPa，在烧结至800-1300℃后，升压至50MPa，在烧结至1300-1500℃后，升压至60MPa，30分钟后冷却即可，待其完全固化后脱模。
步骤(3)所述干燥温度为80℃。
实施例2：
一种风阀阀体材料，包括下列重量份数的组分：氮化硅粉末80份、氧化镁26份、氧化铝17份、氟化镁12.5份、三氧化二铁10份、贝壳粉6.5份、微晶玻璃6.5份、炭黑22.5份、硅酸铝7.5份、硅酮树脂13.5份、高岭土4份、聚乙二醇4.5份、硅烷偶联剂3.5份、分散剂1.5份、消泡剂1.5份、碳纤维1.5份、水35份，分散剂为聚丙烯酸铵分散剂，微晶玻璃的化学成分为SiO2：60-80％，Al2O3：0-3.5％，Li2O：7-15％，K2O：1.5-4％。
一种风阀阀体材料的制备方法，其特征在于，具体包括下列步骤：
(1)配料：称取或量取对应重量的氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水备用；
(2)球磨：依次在球磨机内加入氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水，混合搅拌4小时，得到混合均匀的浆料；
(3)干燥：将球磨后的浆料干燥2小时，干燥至恒温备用，得到粉料；
(4)细磨：将干燥后的粉料细磨，得到物料；
(5)过筛：将细磨后的物料过100-150目筛，如部分物料细度达不到100-150则继续对其细磨，得到粉状物料；
(6)装模：将过筛后的粉状物料装入模具中，使用捣棒将表面压实，对模具预置20MPa的压力，并抽真空至4Pa；
(7)烧结：开始加热加压，在烧结至500-800℃时，升压至40MPa，在烧结至800-1300℃后，升压至50MPa，在烧结至1300-1500℃后，升压至60MPa，30分钟后冷却即可，待其完全固化后脱模。
步骤(3)所述干燥温度为80℃。
实施例3：
一种风阀阀体材料，包括下列重量份数的组分：氮化硅90份、氧化镁28份、氧化铝22份、氟化镁25份、三氧化二铁15份、贝壳粉8份、微晶玻璃8份、炭黑25份、硅酸铝10份、硅酮树脂15份、高岭土5份、聚乙二醇6份、硅烷偶联剂5份、分散剂2份、消泡剂2份、碳纤维2份、水40份，分散剂为聚丙烯酸铵分散剂，微晶玻璃的化学成分为SiO2：60-80％，Al2O3：0-3.5％，Li2O：7-15％，K2O：1.5-4％。
一种风阀阀体材料的制备方法，其特征在于，具体包括下列步骤：
(1)配料：称取或量取对应重量的氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水备用；
(2)球磨：依次在球磨机内加入氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水，混合搅拌4小时，得到混合均匀的浆料；
(3)干燥：将球磨后的浆料干燥2小时，干燥至恒温备用，得到粉料；
(4)细磨：将干燥后的粉料细磨，得到物料；
(5)过筛：将细磨后的物料过100-150目筛，如部分物料细度达不到100-150则继续对其细磨，得到粉状物料；
(6)装模：将过筛后的粉状物料装入模具中，使用捣棒将表面压实，对模具预置20MPa的压力，并抽真空至4Pa；
(7)烧结：开始加热加压，在烧结至500-800℃时，升压至40MPa，在烧结至800-1300℃后，升压至50MPa，在烧结至1300-1500℃后，升压至60MPa，30分钟后冷却即可，待其完全固化后脱模。
步骤(3)所述干燥温度为80℃。
将上述三种实施例获得的风阀阀体材料以及常见的风阀阀体材料(对照组)进行测试试验，试验结果见下表：
Figure BDA0002779209240000051
抗热冲击性：在均热板上自室温以恒定的速率加热至1000℃，保持30min，然后置于空气中淬冷，循环30次。
抗折强度保持率越大代表在其热稳定性更好，破坏强度代表其抵抗外力作用下发生破坏时出现的最大应力，在热冲击作用下各组均未出现破裂现象。
以上对本发明及其实施方式进行了描述，这种描述没有限制性，所示的也只是本发明的实施方式之一，实际的结构并不局限于此。总而言之如果本领域的技术人员受其启示，在不脱离本发明创造宗旨的情况下，不经创造性的设计出与该技术方案相似的结构方式及实施例，均应属于本发明的保护范围。

Claims (8)

1.一种风阀阀体材料，其特征在于，包括下列重量份数的组分：氮化硅粉末70-90份、氧化镁18-28份、氧化铝12-18份、氟化镁10-15份、三氧化二铁5-15份、贝壳粉5-8份、微晶玻璃5-8份、炭黑20-25份、硅酸铝5-10份、硅酮树脂12-15份、高岭土3-5份、聚乙二醇3-6份、硅烷偶联剂2-5份、分散剂1-2份、消泡剂1-2份、碳纤维1-2份、水30-40份。
2.根据权利要求1所述的一种风阀阀体材料，其特征在于，包括下列重量份数的组分：氮化硅粉末70份、氧化镁18份、氧化铝12份、氟化镁10份、三氧化二铁5份、贝壳粉5份、微晶玻璃5份、炭黑20份、硅酸铝5份、硅酮树脂12份、高岭土3份、聚乙二醇3份、硅烷偶联剂2份、分散剂1份、消泡剂1份、碳纤维1份、水30份。
3.根据权利要求1所述的一种风阀阀体材料，其特征在于，包括下列重量份数的组分：氮化硅粉末80份、氧化镁26份、氧化铝17份、氟化镁12.5份、三氧化二铁10份、贝壳粉6.5份、微晶玻璃6.5份、炭黑22.5份、硅酸铝7.5份、硅酮树脂13.5份、高岭土4份、聚乙二醇4.5份、硅烷偶联剂3.5份、分散剂1.5份、消泡剂1.5份、碳纤维1.5份、水35份。
4.根据权利要求1所述的一种风阀阀体材料，其特征在于，包括下列重量份数的组分：氮化硅90份、氧化镁28份、氧化铝22份、氟化镁15份、三氧化二铁15份、贝壳粉8份、微晶玻璃8份、炭黑25份、硅酸铝10份、硅酮树脂15份、高岭土5份、聚乙二醇6份、硅烷偶联剂5份、分散剂2份、消泡剂2份、碳纤维2份、水40份。
5.根据权利要求1所述的一种风阀阀体材料，其特征在于，所述分散剂为聚丙烯酸铵分散剂。
6.根据权利要求1所述的一种风阀阀体材料，其特征在于，所述微晶玻璃的化学成分为SiO2：60-80％，Al2O3：0-3.5％，Li2O：7-15％，K2O：1.5-4％。
7.一种风阀阀体材料的制备方法，其特征在于，具体包括下列步骤：
(1)配料：称取或量取对应重量的氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水备用；
(2)球磨：依次在球磨机内加入氮化硅粉末、氧化镁、氧化铝、氟化镁、三氧化二铁、贝壳粉、微晶玻璃、炭黑、硅酸铝、硅酮树脂、高岭土、聚乙二醇、硅烷偶联剂、分散剂、消泡剂、碳纤维和水，混合搅拌4小时，得到混合均匀的浆料；
(3)干燥：将球磨后的浆料干燥2小时，干燥至恒温备用，得到粉料；
(4)细磨：将干燥后的粉料细磨，得到物料；
(5)过筛：将细磨后的物料过100-150目筛，如部分物料细度达不到100-150则继续对其细磨，得到粉状物料；
(6)装模：将过筛后的粉状物料装入模具中，使用捣棒将表面压实，对模具预置20MPa的压力，并抽真空至4Pa；
(7)烧结：开始加热加压，在烧结至500-800℃时，升压至40MPa，在烧结至800-1300℃后，升压至50MPa，在烧结至1300-1500℃后，升压至60MPa，30分钟后冷却即可，待其完全固化后脱模。
8.根据权利要求7所述的一种风阀阀体材料制备方法，其特征在于，所述干燥温度为80℃。
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