The invention discloses non-oriented
electrical steel for a hub motor of a portable
electric bicycle and a manufacturing method of the non-oriented
electrical steel, and belongs to the field of non-oriented steel. In order to solve the problems of high
processing difficulty and low efficiency of existing non-oriented steel for a small motor, the invention provides the non-oriented
electrical steel for the hub motor of the portable
electric bicycle. The non-oriented electrical steel for the hub motor of the portable
electric bicycle is prepared from the following components in percentage by weight: 1.50-3.00% of Si, 0.50% to 2.00% of Als;, 0.20% to 1.00% of Mn, 0.01% to 0.20% of P, less than or equal to 0.005% of C, less than or equal to 0.03% of S, less than or equal to 0.03% of N, less than or equal to 0.005% of Ti, and the balance of iron and inevitable impurities, wherein the weight percentage of C, S, N and Ti meets the following formula: C% + S% + N% + Ti% is less than or equal to 0.01%. According to non-oriented electrical steel for the hub motor of the portable electric bicycle, the
ductility of
silicon steel is improved by reasonably controlling the element content, and
machining is convenient. According to the manufacturing method of the non-oriented electrical steel,
eddy current and
magnetic hysteresis loss in a wound iron core is reduced, meanwhile,
surface oxidation and surface
nitride precipitation of a steel coil can be avoided, and the iron core loss is reduced; compared with existing non-oriented
silicon steel with the same iron loss level, the elongation is higher, the subsequent cold
machining performance is more excellent, and the
machining is convenient while the excellent performance is ensured.