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实验研究了用圆柱样品测量钢铁材料矫顽力的抽拉样品冲击指零法。指出在用这种方法测量时,若用最大磁场为30kA/m的螺线管作磁化装置,则只能测量长度大于100mm、长径比大于10而饱和矫顽力小于10~2A/m的样品。但是,若用电磁铁进行正向磁化,用螺线管进行反向磁化,则可测量长度小于电磁铁最大极间距而饱和矫顽力大于10~2A/m的各种样品。在用一圆台极头的电磁铁时,为了准确测出饱和矫顽力,样品长度应小于44mm。矫顽力处于200～2000A/m的不同长度样品的测量得出,后一方法测饱和矫顽力的综合偶然误差小于8A/m。
Experimental study of the cylindrical sample to measure the coercive force of steel samples pull pull zero method. It is pointed out that if the solenoid with the maximum magnetic field of 30 kA / m is used as the magnetizing device, only the length of more than 100 mm, the aspect ratio of more than 10 and the saturation coercivity of less than 10 to 2 A / m sample. However, if the magnets are magnetized in the forward direction and the magnets are magnetized in the reverse direction, various samples whose length is less than the maximum pole pitch of the electromagnet and whose saturation coercive force is more than 10 to 2 A / m can be measured. When using a trinocular magnet, in order to accurately measure the saturation coercivity, the sample length should be less than 44mm. Coercivity in the 200 ~ 2000A / m different lengths of the sample measured, the latter method of measuring the coercivity of the coercive integrated casual error is less than 8A / m.