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<div class="mbx">当前位置：<a href="/">首页</a> › <a href="/xinwen-2/">新闻资讯</a> › <a href="/xinwen-2/a2/">常见问题</a> › 柴油发电机缸体和缸盖产生裂纹的原因是什么？	</div>
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<h1 class="h1">柴油发电机缸体和缸盖产生裂纹的原因是什么？</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: 2024-09-25　　访问量:2550</div>
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<p>1)部分改进后的发电机为加强型，速度和功率均比原发电机有显着提高。高速运转时，发电机的惯性力和应力也增大，容易出现裂痕。</p><p>3)加工部位和未加工部位.过渡段内壁厚均会发生应力集中，当这些应力与停用的残余应力迭加时，还容易出现裂痕。</p><p>1)冬天，未操作冷却水，或停机后未及时排出冷却液，造成水套内水箱宝结冰，或在严寒的冷天，因加发烫水而致使冻裂。</p><p>4)材料在运转时，所出现的热应力太大。例如，内燃机长时间超负载作业，致使缸体内应力增加；水套中水垢过厚，减轻了水箱宝通过面积<a href="http://www.gdkmsfdj.com" target="_blank">发电机组厂家</a><a href="http://www.gdkmsfdj.com" target="_blank">柴油发电机故障</a>，并且水垢传热能力过低，降低了发电机的散热性能，尤其是汽缸之间.气门之间，以及进.排烟口附近的水道堵塞后，严重影响其散热，使局部作业温度上升，太高的温度应力致使了裂纹。</p><p>柴油发电机组和修理时，工艺要求不严格执行<a href="http://www.gdkmsfdj.com" target="_blank">柴油机常见故障及解决方案</a>。如果汽缸盖螺母未按规定顺序和功率拧紧。拧紧力不均匀，操作不符合规定的气缸盖螺母；在安装阀座圈时，如果不购买合适的压力过剩，如根据材料和加工精度选型合适，也会造成裂痕。</p><p>紧固汽缸盖螺帽，要使用读数准确的扭力扳手，按先中后后中，分值2-3次(如135系列柴油发电机缸盖螺母的规定功率为245-265N.m，首次拧至10N.m；第二次拧到20N.m；第三次可以拧到规定的力矩)对称地紧固到规定的力矩。重装汽缸盖的发电机在第一次出火后，还要按照上面的要求再次拧紧缸盖螺帽，以达到规定的功率，待发电机冷却后重新调整气门间隙。</p><p>温馨提示：拆下缸盖螺母的顺序正好与上面的顺序相反，按照先两边后中间的顺序，分2-3次对称地拧松。绝不要为了方便，一次卸下螺丝帽。</p><p>柴油发电机气缸、气缸盖开裂，可能引起水箱宝泄漏或机油泄漏，危害内燃机的工作，甚至使汽缸、汽缸盖报废。于是，学习诠释和准确保养和保养气缸、汽缸盖就显得非常重要。</p><p>柴油发电机气缸、汽缸盖不允许出现裂痕，否则将导致内燃机不能正常作业，一般状况下很容易损现汽缸、汽缸盖产生严重裂痕，但很难观察到小裂痕。一般状况下，汽缸、气缸盖裂痕的检验方法如下。</p><p>根据技术规格，将汽缸盖、气缸垫按照气缸的技术型谱装入汽缸体内，并将压力机出水管接头与气缸前端连接好。接着，在气缸体与气缸盖内(如有要素，可用80~90℃热水)，保持压力为0.3~0.5MPa，5分钟内不发生泄漏。如有水珠渗出，则表示有裂缝。在修理过汽缸体、更替过气缸套.阀座环和阀管之后，都要进行一次液压检验。</p><p>如无液压设备，可用自来水、气泵或气缸。向汽缸体及汽缸盖中注入水，然后用气泵或打气筒将水充入水套，借助气体压力检验是否漏液，可以判定出裂痕在哪里。在气缸与气缸的连接处装配一单向阀，以防止水、气倒流。</p></div><a href="http://www.gdkmsfdj.com/" target="_blank">http://www.gdkmsfdj.com</a>
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