The production process of radiation oriented sintered NdFeb magnetic ring is characterized in that it includes the following steps:(1) The lower pressure head assembly back to the edge of the Yin model cavity, the upper pressure head assembly up to the high; (2) The magnetic powder into the cavity of the female mold, the upper pressure head assembly down to the edge of the cavity of the female mold, the upper pressure head assembly and the lower pressure head assembly between the radiation magnetic field; (3) The upper pressing head assembly and the lower pressing head assembly move to the middle at the same time for pressing, pressing magnetic powder into magnetic cake;(4) When the magnetic field and pressure on the magnetic cake reach a certain intensity, the magnetic field is removed; (5) The upper pressure head components decompress, while the upper pressure head components and lower pressure head components rise at the same time, rising out of the female mold cavity; (6) after the magnetic cake exits the cavity of the negative mold, the lower pressing head component stops rising, the upper pressing head component continues to rise, and the magnetic cake is removed; (7) Isostatic pressing, sintering aging; (8) Grind the outer circle and sleeve hole of magnetic cake; (9) Finished. The above production process of a radiation-oriented sintered NdFeb magnetic ring is characterized in that the way to remove the magnetic field in step (4) is to stop supplying power to the electromagnetic coil, so that the magnet loses its magnetism in order to the upper pressure head assembly and the lower pressure head assembly lose their magnetism. The above production process of a radiation-oriented sintered NdFeb magnetic ring is characterized in that the remaining magnetic cake core column is re-pulverized after the holing in said (8).Beneficial effects of the utility model are as follows: the material can be used repeatedly, material utilization ratio, the yield of the circular, performance consistency (including each circular and consistency on the circumference of a circle) is high, stable performance, can make thin wall parts, restrictions on the size shape is small, the magnetization of the magnetic pole number is arbitrarily, high production efficiency, product quality is stable and reliable, and can completely meet the requirements of a variety of purposes, And can produce multiple rings in a round cake, can meet the needs of some paired users, greatly reduce production costs, improve efficiency.
Post time: Dec-06-2021