Spiral arm;  erosion wear;  Testing machine

Spiral arm erosion wear testing machine is a kind of solid particle erosion wear testing machine that is currently widely used. The structure design and improvement of this testing machine are carried out, and the grooved wheel feeding device is adopted to improve the feeding stability, and the pulse width modulation speed regulation, photoelectric speed measurement, PID automatic adjustment system control speed is adopted, so that the accuracy of impact speed and feeding speed is greatly improved. Preliminary tests show that the testing machine has stable data and reliable performance, which is suitable for erosion wear mechanism research and material wear resistance test.