Raymond (Raymond) common sense: Hardness: Because it is destructive test, so the unground of the original stone or precious of minerals can be used. There are two types of hardness scales, one is the absolute hardness 4r mill, and the other is a Mohs hardness (a relatively hardness) Mohs hardness: Ten to common mineral used as a standard to distinguish scratch with each other what what hard soft flour mill, it is customary on mineralogy or gemology is Mohs hardness. Mesh sieve pore is a general characterization of the size of its conversion formula is cm = 16 / mesh, mesh has English and American, British refers to the number of holes per square inch; technical knowledge grinding ring of Raymond recently found that many Users complain Raymond roller mill in life is too short rings, and does not take long to be broken, and that it makes them an illusion that the manufacturers in order to be the cheapest product earn the maximum benefit , making use of poor quality steel roller mill ring. As everyone knows, in Raymond is in accordance with the grinding roller and grinding ring pressed against each other in order to produce the required product, so the grinding roller and grinding ring of material are generally of high manganese steel and other wear-resistant materials. Because often pressed against each other, so the damage of time to be faster. For example, the production process grinding ring on it milling machine, which is made of steel with a 50SiMn, is a wear-resistant high manganese steel, ductile treated water through high manganese steel can be higher ductility and toughness. High manganese steel with high wear resistance, although its hardness only HB210, but its relatively low yield point σs, σb only 40%, so it has a higher ductility and toughness. High pressure suspension mill within the host, the roller hanger on fastening a 1000-1500 kg pressure hyperbaric spring mobile crushing station. After beginning work, grinding ring around the spindle rotation, and the role of high pressure spring and centrifugal force, keep grinding ring rolling, when the material to be ground into the grinding chamber 后雷蒙 mill, Raymond mill machine shovel by the blade ring From feeding were rolling around the spindle rotation between roller and grinding ring, RCC after the powder with circulating air blower into the analysis machine, qualified powder-gas inflow whirlwind of powder is finished, large particles tablets regrinding of magnetic separation equipment circulating air blower to repeat the above process, it entered the Wind bag filter purification. To guarantee stable output and fineness. So grinding ring to go through the ring blanks - roughing - Heat treatment - treatment finishing these few programs in order to avoid grinding ring wear a short period of time a little. 3r mill _ Lei Machinery (Online) _ mill provided by Zhengzhou Machinery Co., Ltd. Lei. Zhengzhou Lei Machinery Co., Ltd. (www.hnzljx.net) (www.hnzljx.net) is a professional, "Raymond, shredders, mills," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "Lei" brand has a good reputation. We adhere to the "service first, customer first" principle, so that the mechanical Lei won the trust of customers all at crushing grinding equipment, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!