1、如果叶轮的铆钉头部被磨损，可以通过压紧叶轮体与轮毂用电焊堆焊，让磨损的铆钉头部回到原来的正常状态。
1. If the rivet head of the impeller is worn out, the worn rivet head can be restored to its original normal state by pressing the impeller body tightly and welding it with the wheel hub.
2、对铆钉孔处容易产生疲劳裂纹的情况，可用整根没有用过的新焊条进行焊接修裂纹，但要以叶轮轴心线为中心对称进行，将该裂纹处补焊剩下的焊条留在该处，再用一根新焊条修补相对称的铆钉孔裂纹，焊完后剩下的焊条与对称铆钉修补时剩下的焊条一样长，以确保焊补上去的重量相等。若是对称的铆钉孔处无裂纹也要将焊条堆焊于此处，用来抵消对称铆钉孔裂纹处新补的焊接重量。按照这种对称补重的方法焊接可以修复裂纹。
2. For situations where fatigue cracks are prone to occur at the rivet hole, a new welding rod that has not been used can be used to repair the cracks. However, the welding rod should be symmetrically centered around the axis of the impeller. The remaining welding rod at the crack should be left there, and a new welding rod should be used to repair the corresponding rivet hole cracks. After welding, the remaining welding rod should be the same length as the remaining welding rod when repairing the symmetrical rivet, to ensure equal weight when welding. If there are no cracks at the symmetrical rivet hole, the welding rod should also be deposited here to offset the newly added welding weight at the symmetrical rivet hole crack. Welding according to this symmetrical weight method can repair cracks.
3、对叶轮进行简单的动平衡试验，方法也很简单。把叶轮支起后用手拨动使之轻轻旋转，达不到平衡的地方会停到较低点且左右摆动。若有偏重可在对面的叶轮的焊痕，也能达到平衡，这样可以把风机修复好进行正常工作了。
3. The method of conducting a simple dynamic balance test on the impeller is also very simple. After supporting the impeller, use your hand to gently rotate it. If the balance cannot be reached, it will stop at a lower point and swing left and right. If there is a bias, the welding marks on the opposite impeller can also achieve balance, so that the fan can be repaired for normal operation.