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我厂以前在加工一小批精密GCr15针阀中混有少量45~#钢。由于精密针阀基本成形,无法进行破损检验,按一般资料介绍的无损区分法又比较复杂,在这种情况下,我们利用钢铁材料不同,内部结构不同,其导磁性能就不同以及被测工件有精密几何形状等特点,研制了一台简易磁吸器(见图1),它由磁铁、砝码两部份组成.针阀承受砝码的总载荷随着针阀材料
I plant in the processing of a small batch of precision GCr15 needle valve mixed with a small amount of 45 ~ # steel. Due to the basic shape of precision needle valve can not be damaged test, according to the general introduction of non-destructive distinction between the data and more complicated, in this case, we use different materials, the internal structure of different permeability and the measured workpiece Has a precise geometry and other characteristics, developed a simple magnetometer (see Figure 1), which consists of magnets, two parts weight. Needle valve to withstand the total load with the weight of the needle valve material