Classification of rare earths 1) Light rare earth (also known as 铈 group): 镧 , 铈, 镨 , é’• , é’·, é’ , é“• , é’† . 2) Heavy rare earth (also known as é’‡ group): 铽 , é• , é’¬ , é“’ , é“¥ , 镱 , é•¥ , é’ª , é’‡. The difference between the 铈 group and the é’‡ group is because the rare earth mixture obtained by separation of minerals is often named after the ratio of lanthanum or cerium. Rare earth metals (rare earth metals), also known as a rare earth element, is a general term for a group â…¢B periodic table scandium, yttrium, lanthanides 17 elements, commonly represented by R or RE. Their names and chemical symbols are é’ª (Sc), é’‡ (Y), 镧 (La), 铈 (Ce), 镨 (Pr), é’• (Nd), é’· (Pm), é’ (Sm), é“• (Eu ), Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu. Their atomic numbers are 21 (Sc), 39 (Y), 57 (La) to 71 (Lu). The element “Ce†“铈†was discovered and named by the German Claupros, Swede Usbizzi, and Singel in 1803 to commemorate the asteroid, Ceres, discovered in 1801. IPS Inch Poly Pipe Fusion Machines IPS/Inch Poly Pipe Fusion Machines means the inserts of butt fusion machine are made in IPS size. Wuxi Yuda offers IPS polyethylene welder from IPS 1 1/4 to IPS 96; every poly pipe welding range has relevant fusion welders to choose. such as RDH315 plastic pipe welding machine to weld IPS3'' to IPS10''. RDH630 HDPE Pipe Plastic Welder to weld IPS14'' to IPS24''. Poly Fusion Machines is by the way of heat fusion/ heat welding/butt welding/ fusion to join two different pieces of a thermoplastic. This process involves heating both pieces simultaneously and pressing them together. The two pieces then cool together and form a permanent bond. When done properly, the two pieces become indistinguishable from each other. Dissimilar plastics can result in improper bonding. Find Plastic Pipe Welder Today! Search HDPE Pipeline Welding Equipment on www(dot)cnbuttfuison(dot)com IPS Inch Poly Pipe Fusion Machines,Fusion Welder,Heat Fusion Machine,Pipe Fusion Machines WUXI MEIERTE MACHINERY TECHNOLOGY CO.,LTD , https://www.pipefusionweldings.com
Use of rare earth element cerium (Ce)