磁力探伤用的磁粉种类很多,过去我厂在磁粉制造方面走了不少弯路后,才摸索着一些磁粉制造的经验,现将其叙述于后,供大家参考。在许多铁磁粉中,对磁力探伤最有效和最适用的是磁性氧化铁粉。我厂在制造这种磁粉,曾按照活叶技术资料研究室“磁粉的制造”一文的方法进行,当用熔融法时,将硫酸亚铁与碳酸钠均匀混合放入坩埚中,在电炉上加热很久后,硫酸亚铁仍不能与碳酸钠相混合,作了不少次试验都失败了。后来经多次研究,用加入清水的方法使其混合即获得成功,现将其具体的制造方法叙述如下。将硫酸亚铁与等量的碳酸钠均匀混合后,加入清水,即放在电炉上加 Magnetic detection with many types of magnetic particles, magnetic field in the past I plant a lot of detours to go after only groping some experience in the manufacture of magnetic powder, now described in the post, for your reference. Among many ferromagnetic powders, magnetic iron oxide powders are most effective and suitable for magnetic flaw detection. I plant in the manufacture of such magnetic powder, in accordance with living leaf technology information laboratory “of the manufacture of magnetic particles,” a text method, when using the melting method, the ferrous sulfate and sodium carbonate uniformly mixed into the crucible, heated on the electric furnace A long time later, ferrous sulfate still could not be mixed with sodium carbonate, and many tests failed. Later after many studies, with the method of adding water to make it a success, now its specific manufacturing methods are described below. The ferrous sulfate and the same amount of sodium carbonate evenly mixed, add water, that is, on the electric furnace plus