现货销售HUADE北京华德先导式溢流阀
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现货销售HUADE北京华德先导式溢流阀
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现货销售HUADE北京华德先导式溢流阀
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油泵严重损坏后的技术鉴定：油泵损坏后，首先要检查外观、内在及相关现象。当出现下列现象时，它的相应原因就可以确定：
1、轴承损坏：当泵芯严重损坏多出损伤，其中只要有轴承损坏的，一律视为安装不当造成。（因为轴承损坏在先、当轴承损坏后，轴就出现摆动，告诉摆动不会引起其他件损坏）
2、内胆有绣：当泵芯严重损坏多处损伤，其中只要有锈迹存在的。一律视为油液中进水造成。（因为油液正常时，永远不会出现生锈情况）
3、油质不好：当泵芯严重损坏。只要油液中存有赃物、异物或油已变黑，一律视为油脏、油质不好造成。
4、新轴断裂：应设法检查断裂位置，如果是材料或热处理不好，它的损坏点应当是最薄弱环节，也就是最小直径处或花健处，如果不在最弱地点断裂应当视为安装不当，同轴度偏差太大造成。
5、在检查材料时，应当对材料的成份，金相组织，硬度等进行检查，同时还要对损坏零件的先后顺序和因果关系等进行分析，最终能查出原因。
四、下面几项属于产品制造中的质量问题：
1、噪音偏高：只要其它原因都排除时，应属于质量问题。
2、零件划伤：转了与侧板的划伤是相对称的，对角划伤的现象应是质量问题。
3、轴断裂：当断在最薄弱的地方，同时其它件均完好时是轴的质量问题。
4、转子断裂：其它件都没断，只有转子断，是质量问题。
5、叶片断裂：其它件都没断，只有叶片断，是质量问题。
