The vibrating spectrum analysis was done to centrifugal multi-level impellerblower, and found that the impeller has dynamic unbalance, so that the vibration of blower is to exceed the standard.
对离心式多级叶轮风机进行振动频谱分析，认为叶轮存在动不平衡，造成风机振动超标。
2
Corrosion phenomenon of gas blowerimpeller is introduced, the corrosive reason is briefly analyzed, and 8 items of improving measures are put forward.
介绍了煤气鼓风机叶轮腐蚀现象，并简单分析了腐蚀原因，还提出了8项改进措施。
3
Combining with development of high speed blowerimpeller with large titanium material cast welding structure, the manufacturing technical feature of the impeller is set forth.