为了进行肯定评价，采用叶片入口段只由专门耐磨钢制作的叶轮，在抽送大颗粒固液混合物时其叶片承受最严重的磨损。这种叶轮安装在16P - 9M型泵上，根据水电安装托拉斯(研制叶轮结构)资料，使用经验表明在采用专门合金钢最少时，其寿命大幅度提高(1~1.5倍)。
How to Improve the Life of Fragile Parts of Slurry Pump
I. wear resistant materials
The most effective way to reduce wear and prolong the life of parts is to use special wear-resistant materials (alloy cast iron, alloy steel, special rubber and mineral polymer). It should be noted that, in the case of intense hydraulic abrasive wear, hardening of different types of metal surfaces (thermodynamic, electrical, etc.) is not effective because the thickness of the wear-resistant layer is very thin when the process is very difficult. In recent years, new wear-resistant alloy castings have been put forward and successfully tested in enterprises using slurry pumps. However, due to its relative brittleness, it can be used in pumping parts that do not contain large particles (a < 10mm) solid-liquid mixtures. When pumping the solid-liquid mixture of large particles (gravel and boulder), wear-resistant door steel should be used.
In order to carry out the positive evaluation, the blade is subjected to the most serious wear when pumping large particles solid liquid mixture by using the impeller which is made of special wear-resistant steel. The impeller is installed on the 16P - 9M pump. According to the data of the hydroelectric installation trust (developing impeller structure), the service life of the impeller is greatly increased (1 - 1.5 times) when the special alloy steel is used at least.