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<div class="mbx">当前位置：<a href="/">首页</a> › <a href="/CumminsNews-2/">新闻资讯</a> › <a href="/CumminsNews-2/a1/">行业新闻</a> › 柴油发电机气缸套穴蚀的因由是什么？	</div>
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<h1 class="h1">柴油发电机气缸套穴蚀的因由是什么？</span></h1>
<div class="text">发布来源：康柴（深圳）电力技术有限公司　　发布日期: 2024-07-15　　访问量:1107</div>
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<p>柴油发电机气缸套是一个圆筒形零件，置于机体的气缸体孔中，上由气缸盖压紧固定。活塞在其内孔作往复运动，其外有水箱宝冷却。汽缸套应有足够的强度、刚度和耐热性能，还应具有较好的耐磨性能，而工作中应有良好润滑和冷却功效。柴油发电机汽缸套穴蚀是柴油发电机多发的失效形式之一，探讨其形成的起因，以便采取防治举措延缓穴蚀的出现，对减少机械损坏和增长机械寿命，有着十分重要的意义。</p><p><br></p><p><img src="//c.b2b168.net/photo/2024/07/15/23/202407152331332690984.png" width="0" height="0" alt="缸套外径表面穴蚀示意图"></p><p style="text-align:center"><img src="//c.b2b168.net/photo/2024/07/15/23/202407152331332690984.png" alt="缸套外径表面穴蚀示意图"></p><p style="text-align:center"><span style="text-wrap:*">缸套外径表面穴蚀示意图</span></p><p><br></p><p>1、气缸套结构。</p><p>气缸套穴蚀的根源在于汽缸套的震动，而振动强度与气缸套构造强度有关。增加气缸套的壁厚，可以提高其结构强度，从而使震动强度减少。通常认为，当壁厚达到0.08D（D为缸套的直径）以上时，穴蚀现状就很少发生。</p><p>2、活塞结构。</p><p>活塞销的位置影响活塞上下两部分重量的分配比例。当上下两部分毛重相差过量，活塞偏摆时出现较大的绕活塞销翻转的力矩。当活塞的上部净重较下部重量大时，增加了活塞上部对缸壁的撞击力，使局部的震动强度增大。活塞长度较长时，可以减弱翻转的影响，并使活塞与缸壁的接触面积增大，减少单位面积上的撞击力，从而使震动强度降低。3、水腔截面形式。水腔截面的形状危害着水流速度，从而使液体压力出现变化。在小截面处，水的流速高、压力小，容易蒸发而形成气泡；而在大截面处，水的流速相对过低、压力高，因而在小截面向大截面过渡处出现穴蚀的倾向增大。</p><p>4、活塞与缸套的配合间隙。</p><p>当活塞与缸套的配合间隙增大时，活塞对缸壁的冲击增大，因而使穴蚀加剧。</p><p>5、防锈水。</p><p>当水箱宝中含有腐蚀介质时，会形成腐蚀与穴蚀的联合用途，使穴蚀发生转速成倍、甚至于成数十倍增长。</p><p>6、操作条件。</p><p>当柴油发电机工作程序粗暴，较大爆发压力增大时，致使的侧向撞击力也相应增大，从而使穴蚀增加。</p></div><a href="http://www.szkcfdj.com/" target="_blank">http://www.szkcfdj.com</a>
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