The Ball Mill is a mill, one of the main working parts. In addition withstand grinding ball body of work, the static load, but also by the impact of grinding media, and the ball is rotating, so the ball to generate the alternating stress. Therefore, it must have sufficient strength and stiffness. This requires the manufacture of metal ball strength of the material must be high, plastic is better, with good mechanical properties and process performance in order to ensure the safe operation of ball mill. Generally used to make the barrel material is ordinary structural steel, such materials, the strength, plasticity, weldability be able to meet the requirements, along with industrial development, mill capacity (output) is also to large-scale development, and the recent design of The ball mill is a large mill 16Mn steel manufacture. Q235 elasticity higher than the limited strength of about 50%, corrosion resistance and 50% higher than in Q235, the impact toughness (especially at lower temperatures) than Q235 higher. And 16Mn also has a good cutting properties, weldability. wear resistance and fatigue resistance. So, is a very appropriate 16Mn steel.Ball Mill Operating Principle: ball mill is horizontal type and tubular running device, has two warehouses. This machine is grid type and its outside runs along gear. The material enters spirally and evenly the first warehouse of the milling machine along the input material hollow axis by input material device. In this warehouse , there is a ladder scaleboard or ripple scaleboard, and different specification steel balls are installed on the scaleboard, when the barrel body rotates and then produces centrifugal force ,at this time , the steel ball is carried to some height and falls to make the material grinding and striking. After grinded coarsely in the first warehouse, the material then enters into the second warehouse for regrinding with the steel ball and scaleboard. In the end, the ball is discharged by output…