Safety Regulations and Test on Friction Sparks of Metal Material in Coal Mine Ventilator

This paper introduces the types of metal material for mine-used blades of coal mine ventilator and safety regulations of relative standard of GB3836, European PREN1701:2003 (D), and analyzes and summarizes the safety testing of high speed impact fricti on sparks and rotating friction sparks, and provides suggestions for the safe use of fan impeller in coal mine.