If the rivet head of the impeller is worn, the impeller body and the hub can be welded by electric welding to restore the worn rivet head to a normal state.
In the case where the rivet hole often has fatigue cracking, it can be started by welding with a welding rod that has not passed through the center line of the impeller shaft, and the remaining welding rod of the crack is left here, and then one The unused welding rods are used to fill the rivet hole cracks. The remaining welding rods are the same length as the remaining welding rods when the symmetrical rivets are repaired. This ensures the same weight of the welding.
If there is no crack at the symmetrical rivet hole, the electrode should be placed in this place, thus eliminating the new welding quality at the symmetry rivet hole crack. The crack can be repaired by this stacked weighting method. The pulverizer performs a simple dynamic balance test on the impeller, and the process is not complicated.
After the impeller is lifted up, it can be rotated gently by hand. If it can't reach the balance, it will stop at the low point of Zui and swing left and right. If it is biased, spot welding can be performed on the opposite impeller, and the weight in the home can be balanced. It is also possible to use an angle grinder to grind the weld marks of the heavy impeller, and the balance can be achieved, but the fan can be repaired and operated normally.
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