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从水泥压力试验机检验水泥的几个实例,展现了由于水泥压力试验机的示值超差而造成的危害以及现场如何排除这些示值超差的方法;并从水泥检验的特殊性以及笔者在长期实际工作中的经验,介绍了水泥压力试验机示值超差的几种主要表现形式、示值误差图线,分析了产生示值超差的原因。进而指出了在设计时应如何避免产生示值超差、在检定及修理时应如何发现示值超差及排除示值超差的问题。
Several examples of testing cement from the cement pressure testing machine show the hazards caused by the overshoot of the cement pressure testing machine and how to eliminate the over-indication in the field. From the peculiarity of the cement inspection and the author’s Long-term practical experience, introduced several main manifestations of cement pressure test machine over-tolerance, showing the error of the plot line, analysis of the cause of the over-representation. Furthermore, it is pointed out how to avoid the indication tolerance when designing, how to find the indication tolerance and eliminate the indication tolerance in the verification and repair.