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引言在磁粉探伤中,由于油磁悬液配制简便,有效使用期长,从而在工业生产中得到广泛的使用.它的配制方法一般是用煤油与变压器油1∶1混合,再以每kml混合油中加入12～20(g)的磁粉,搅拌均匀.磁悬液一旦配制好,长期反复使用后,对它的探伤性能是否减退,则往往很少引起使用者的注意.由于磁粉损耗、沉淀以及煤油挥发等,使磁悬液在磁粉粒度、磁悬液浓度、液体粘度、悬浮度等各方面都受到影响,势必影响检测灵敏度.
Introduction Magnetic particle testing, due to the oil suspension preparation is simple, effective use of a long period of time, which in industrial production has been widely used.Its preparation method is generally used kerosene and transformer oil mixed 1: 1, and then mixed per kml Oil added 12 ~ 20 (g) of the magnetic powder, stir well once the magnetic suspension formulated, long-term repeated use of its detection performance is reduced, it is often rarely caused the user’s attention due to magnetic loss, precipitation As well as kerosene volatilization, so that the magnetic suspension in magnetic particle size, magnetic suspension concentration, liquid viscosity, suspension and other aspects are affected, bound to affect the detection sensitivity.