CN101487538B - 一种风阀板 - Google Patents

一种风阀板 Download PDF

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CN101487538B
CN101487538B CN2009100144312A CN200910014431A CN101487538B CN 101487538 B CN101487538 B CN 101487538B CN 2009100144312 A CN2009100144312 A CN 2009100144312A CN 200910014431 A CN200910014431 A CN 200910014431A CN 101487538 B CN101487538 B CN 101487538B
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CN101487538A (zh
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于风福
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WEIHAI SANDUN WELDING MATERIALS ENGINEERING Co Ltd
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Abstract

本发明涉及一种风阀板，其包括有耐热钢骨架外壳，内部填充非金属耐火材料，外壳底部设有与风道配合的凹槽，外壳下部迎风面设有向凹槽过渡的流线型坡面，形成流线型通道，外壳为双金属复层耐磨钢板制作，内部设有若干流线型双金属复层耐磨钢板制作的筋板，筋板与筋板之间填充非金属耐火材料，双金属复层耐磨钢板是以母材为基体通过堆焊方法复合耐磨层制成的耐磨板材制品。本发明构造合理，能有效抵制整体结构变形，制造工艺简单，通过表面堆焊技术抵抗冲蚀磨损，耐高温冲蚀磨损性能优越，使用寿命显著提高。特别适于做水泥生产线三次风阀板使用。

Description

一种风阀板
技术领域
本发明涉及一种金属复合板材，具体地说是一种耐高温冲蚀磨损的风阀板，适于做水泥生产线三次风阀板使用。
背景技术
我们知道，上个世纪末，我国就进入了水泥生产的快速发展期，通过设备的大量引进和吸收，十几年来投产了一大批生产能力大于2500t/d的生产线。这些生产线存在一个共性问题：回收再利用的三次风需经管道输送回到生产环节。因为工艺上需要调节三次风供应量，管道上设有阀门，三次风温度约为900℃并含有较大浓度的熟料粉尘，其阀门的阀板部件在强烈的高温冲蚀磨损条件下工作。早期进口的生产线，三次风阀门原设计为电动蝶阀，蝶阀阀板由耐热钢板(Ni25Cr20)制成，由于阀板磨损造成设备故障停机周期为2-3个月；之后国内各大水泥生产企业纷纷采取措施对三次风阀门进行技术改造，改造后的三次风阀门采用由卷扬机控制升降的闸阀形式，阀板则采用耐热钢骨架浇注耐火浇注料制成。新型阀板存在的问题有二：(1)、阀板在不均匀受热情况下易发生骨架变形与阀座卡死；(2)、浇注料在强烈冲蚀条件下易发生开裂和大块脱落。因此，使用寿命始终不够理想。
发明内容
本发明所要解决的技术问题是克服上述现有技术的不足，提供一种构造合理，制造工艺简单，耐高温冲蚀磨损，使用寿命长的风阀板。
本发明解决上述技术问题采用的技术方案是：一种风阀板，其包括有耐热钢骨架外壳，内部填充非金属耐火材料，其特征是：外壳底部设有与风道配合的凹槽，外壳下部迎风面设有向凹槽过渡的流线型坡面，形成流线型通道，外壳为双金属复层耐磨钢板制作，内部设有若干流线型双金属复层耐磨钢板制作的筋板，筋板与筋板之间填充非金属耐火材料，双金属复层耐磨钢板是以母材为基体通过堆焊方法复合耐磨层制成的耐磨板材制品，所说母材选用普通碳钢、低合金钢或不锈钢，耐磨层是一种以高硬度金属碳硼化合物为硬质强化相的合金，合金具体组成含量(重量％)为：W 5-30、Nb 2-15、V3-12、Mo 1-8、Cr 1-5、B 2-7、稀土0.01-2、余量为Fe。
本发明风阀板通过表面堆焊技术抵抗冲蚀磨损，内部结构合理，能有效抵制整体结构变形，对照现有技术，本发明构造合理，能有效抵制整体结构变形，制造工艺简单，通过表面堆焊技术抵抗冲蚀磨损，耐高温冲蚀磨损性能优越，使用寿命显著提高。特别适于做水泥生产线三次风阀板使用。本发明耐磨堆焊层表面平滑、均匀、摩擦系数低，提高寿命2-3倍。
附图说明
下面结合附图对本发明作进一步的描述：
图1是本发明的结构示意图。
图2是图1的截面示意图。
图中1.外壳，11.凹槽，12.流线型坡面，2.筋板，3.非金属耐火材料。
具体实施方式
从图1、图2中可以看出，本发明一种风阀板，其包括有耐热钢骨架外壳1，内部填充非金属耐火材料3。本发明风阀板仍采用由卷扬机控制升降的闸阀形式，考虑水泥生产线三次风存在一个最小流量，本发明外壳1底部设有与风道配合的凹槽11，外壳下部迎风面设有向凹槽过渡的流线型坡面12，形成流线型通道，外壳为双金属复层耐磨钢板制作，内部设有若干流线型双金属复层耐磨钢板制作的筋板2，筋板与筋板之间填充非金属耐火材料3，双金属复层耐磨钢板是以母材为基体通过堆焊方法复合耐磨层制成的耐磨板材制品。
本发明双金属复层耐磨钢板是用堆焊方法制成的“金属复合材料”。双金属复层耐磨钢板是以母材为基体通过堆焊方法复合耐磨层制成的耐磨板材制品。其母材根据需要可以选用普通碳钢、低合金钢或不锈钢，在本服役条件下，主要提供强度、韧性等机械性能指标，抵御外来作用力；表面耐磨层采用堆焊方法制成，主要提供耐磨损性能指标，两种材料各自承担不同任务，发挥最佳性能。由于有母材抵御外来作用力，表面耐磨层合金可以充分考虑耐磨性，实现过共晶组织，利用一次析出相的高显微硬度提高耐磨性能。表面耐磨层，是一种以高硬度金属碳硼化合物为硬质强化相的新型合金，合金具体组成含量(重量％)为：W 5-30、Nb 2-15、V 3-12、Mo 1-8、Cr 1-5、B2-7、稀土0.01-2、余量为Fe。用该合金制成堆焊焊条、药芯焊丝、块状堆焊材料或粉末堆焊材料，采用堆焊方法加工表面耐磨层。
本发明的特点是：(1)、流线型通道可在一定程度上避免大角度冲蚀磨损；(2)、流线型筋板及其排布，一方面增加刚度防止变形，另一方面实现阶梯服役，最大限度地提高使用寿命；(3)、非金属耐火材料可吸收一部分熟料粉尘形成阻磨层。(4)、用耐磨堆焊和焊接结构组合技术制造三次风阀板抵抗高温冲蚀磨损性能优越，使用寿命显著提高。

Claims (1)

1.一种风阀板，其包括有耐热钢骨架外壳，内部填充非金属耐火材料，其特征是：外壳底部设有与风道配合的凹槽，外壳下部迎风面设有向凹槽过渡的流线型坡面，形成流线型通道，外壳为双金属复层耐磨钢板制作，内部设有若干流线型双金属复层耐磨钢板制作的筋板，筋板与筋板之间填充非金属耐火材料，双金属复层耐磨钢板是以母材为基体通过堆焊方法复合耐磨层制成的耐磨板材制品，所说母材选用普通碳钢、低合金钢或不锈钢，耐磨层是一种以高硬度金属碳硼化合物为硬质强化相的合金，合金具体组成含量(重量％)为：W 5-30、Nb 2-15、V 3-12、Mo 1-8、Cr 1-5、B 2-7、稀土0.01-2、余量为Fe。
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CN103075532A (zh) * 2011-10-25 2013-05-01 山西沁新能源集团股份有限公司 一种清洁型热回收炼焦炉烟道闸板

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266517A (en) * 1964-02-12 1966-08-16 Kinney Eng Inc S P Gate valve for use in hot blast lines
CN2148182Y (zh) * 1993-02-12 1993-12-01 铁道部大连内燃机车研究所 废气涡轮增压器涡轮进气壳的改进
CN2319637Y (zh) * 1997-11-12 1999-05-19 湖北建设机械股份有限公司 S管混凝土分配阀
CN2325594Y (zh) * 1998-03-19 1999-06-23 曲树蓁 闸板式煤粉阀门
CN2701916Y (zh) * 2004-04-29 2005-05-25 吕运征 新型高强复合材料井盖
CN1843681A (zh) * 2005-04-06 2006-10-11 威海三盾焊接材料工程有限公司 耐磨堆焊合金材料
CN101261081A (zh) * 2007-09-11 2008-09-10 李朝侠 流态化焙烧炉球拱炉顶及其成形方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266517A (en) * 1964-02-12 1966-08-16 Kinney Eng Inc S P Gate valve for use in hot blast lines
CN2148182Y (zh) * 1993-02-12 1993-12-01 铁道部大连内燃机车研究所 废气涡轮增压器涡轮进气壳的改进
CN2319637Y (zh) * 1997-11-12 1999-05-19 湖北建设机械股份有限公司 S管混凝土分配阀
CN2325594Y (zh) * 1998-03-19 1999-06-23 曲树蓁 闸板式煤粉阀门
CN2701916Y (zh) * 2004-04-29 2005-05-25 吕运征 新型高强复合材料井盖
CN1843681A (zh) * 2005-04-06 2006-10-11 威海三盾焊接材料工程有限公司 耐磨堆焊合金材料
CN101261081A (zh) * 2007-09-11 2008-09-10 李朝侠 流态化焙烧炉球拱炉顶及其成形方法

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