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在金属硬度试验中,为保证试验数据的准确,往往需要确定出硬度试样的最小厚度:若试验受检面为圆柱形或球形面,则需确定修正值或修正系数,以对实测硬度做出修正:有时因试样尺寸、形状等原因需对实测硬度做量值换算:当设计图与工艺检验指标不同时,需用硬度换算强度;根据硬度压痕求得HB、HV等硬度值等,都要通过计算方可实现。但更多的是以查阅《标准》或《手册》的方法完成。由于数据分散,查找极不方便,且极易造成人为的误差,影响硬度试验的顺利进行。为了克服上述缺点,由上饶精密仪器厂陈预培工程师设计、上饶工贸联营工艺厂生产了金属硬度试验系列用尺。这
In the metal hardness test, in order to ensure the accuracy of the test data, it is often necessary to determine the minimum thickness of the hardness test specimen: if the test surface to be tested cylindrical or spherical surface, you need to determine the correction or correction factor to the measured hardness Amendment: sometimes due to the sample size, shape and other reasons need to measure the hardness value to be done: When the design drawings and process indicators are not the same, the hardness should be used to calculate the intensity; According to the hardness indentation obtained HB, HV and other hardness values , Must be calculated through the realization. But more is done by consulting the “standard” or “manual” method. As the data scattered, very easy to find, and easily lead to human error, affecting the smooth progress of the hardness test. In order to overcome the above shortcomings, designed by Shangrao Precision Instrument Factory Chen preemptive engineer, Shangrao Craft Factory produced metal hardness test series ruler. This