混凝土泵车弯管内衬的研制

Preparation of Curved Pipe Liner Used in Concrete Pump Truck

泵车弯管内衬的磨损失效分析表明,低碳Cr26高铬铸铁复合弯管内衬的磨损机制主要以微观切削磨损为主,因此为了提高弯管的使用寿命而提高了Cr26高铬铸铁的含碳量,从而提高其硬度。冲蚀磨损实验和实际装车运行结果表明,高碳Cr26高铬铸铁内衬及复合弯管,冲蚀磨损率和实际使用寿命均高于低碳Cr26高铬铸铁,达到了提高混凝土泵车弯管使用寿命的目的。

The wear failure analysis of curved pipe liner used in concrete pump truck shows that the wear mechanism of low carbon Cr26 high chromium cast iron liner is dominated by micro-cutting wear.Thus the hardness of Cr26 high chromium cast iron can be increased by addition of its carbon content to increase the service life of curved pipe.The results of erosion wear tests and practical running operations showed that erosion wear rate of high carbon Cr26 high chromium cast iron and the service life of composite curved pipe can be higher than that of low carbon Cr26 high chromium cast iron.The purpose of increasing the service life of concrete pump truck curved pipe is achieved.