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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。