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化验室里称样,一般都采用电磁吸棒来吸取铁、钢屑试样。因电磁吸棒构造较为复杂,外形粗大,故在使用时很不方便。如图所示是我们利用普通书写用的圆珠笔改制成的简易磁棒。经过较长时间的实际使用,我们认为这种简易磁棒使用轻便,应用自如,有助于加快称样的速度,构造简单,易于制作。图中:1.为圆珠笔杆。2.滑动槽。3.针杆(唱针即可),插于磁棒芯上(也可用树脂胶粘)。4.小竹棒
Weighing in the laboratory, generally using electromagnetic stick to absorb iron, steel samples. Due to the electromagnetic stick structure is more complex, thick shape, it is not convenient to use. As shown in the figure, we use a simple writing ballpoint pen converted into a simple magnetic bar. After a long period of actual use, we think that this simple magnetic stick light, easy to use, help to speed up the kind of speed, simple structure, easy to make. In the picture: 1. For the ball-point pen. Slide the slot. 3. Needle bar (needle can be), inserted in the magnet core (also available resin adhesive). 4 bamboo stick