我厂进口的6NAO/2型煤气鼓风机有一密封圈,材料系铝合金。加工时先要把坯料锯成两个半圆,刨平两接触面,再焊接成整体,车削加工成成品,再把焊接处拆开。拆开后的焊接面因没有余量不能再加工,因此焊接要求很高,既要焊得牢固(车床夹紧时不得开裂),又要不影响焊接面精度,还要便于拆开。我们原采用焊锡和风焊铝方法都未能达到要求。后来采用铁锚705酚醛-丁晴粘合剂(上海新光化工厂生产)粘接,取得良好效果。 I imported 6NAO / 2 gas blower has a ring, the Department of aluminum alloy. First processing the billet into two semi-circular, planing the two contact surfaces, and then welded into a whole, turning into finished products, and then open the welding place. Open the welding surface because there is no surplus can not be processed, so welding demanding, it is necessary to weld firmly (lathe clamping without cracking), but also does not affect the accuracy of the welding surface, but also easy to open. We used the original method of soldering and welding aluminum failed to meet the requirements. Later using iron anchor 705 phenolic - Dingqing adhesive (Shanghai Shin Kong Chemical Factory production) bonding, and achieved good results.