Extrusion load stress and grinding Raymond mill wear parts easy to make martensite cracks, when the eutectic carbides along the grain boundaries into a network, will promote its brittle crack propagation, residual austenite In this case the existence of the body to prevent the extension of a good crack, to the number on Raymond often need to replace the grinding rolls. Raymond roller mill wear parts are easy to wear, so it's useful life and its environment are closely related, so Raymond roller mill machine to suit different needs 5r Raymond, on the roller surface state requirements are also different . Some work roll surface grinding, Roll Roll, roll Roll shape is cylindrical; some teeth Raymond roller mill, only a rough roll surface, the roll is called smoothing roll, calender rolls both ends slightly taper. Before Raymond mill are manual feed Raymond 6r, when the feeding, Banxia handle, feed mill began, while the rolling mill rolls together, this approach can not adjust the speed of the feed rollers, can not automatically adjust the rolling mill rolls away. Manual control is the most primitive of control, can not guarantee the timely roll grinding roll and feed roller clutch timely stops, resulting in an empty mill phenomenon, but the price is cheaper, still use this control on a small mill. Eighties of the more common applications of hydraulic feed control adjustment, the biggest drawback of this control system is a serious oil 4r Raymond nineties, pressure control gradually replace the hydraulic control, clean, and free of oil, more than one mill the same advantages can be gas source. Lanping Raymond Raymond _ _ Yuxin Senda Ltd. Henan new Senda by heavy machinery. Henan new Senda Heavy Machinery Co., Ltd. (www.hnsdzg.com) strong, credible, in Zhengzhou crushing grinding equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Yuxin Senda and you hand into the brilliant, for a better future!