An excellent process engineer not only obtains qualified products through the sintering process, but also reduces the cost in the sintering process. Through experiments, the optimized conditions can be obtained. The sintering can be achieved for 1 hour, and should not be sintered for 1.5h, 2h. Waste energy and increase capital. It is necessary to find the optimization conditions in the shortest time and study the thermodynamics of the sintering process in depth. This will become a true NdFeB technician.