| 摘要 |
<p>The invention relates to a method and device for hardening surfaces (10, 11, 12; 39, 40, 41) of a crankshaft (K) or camshaft (N), said surfaces being adjacently arranged in axis direction (A). According to the invention, the surfaces (10, 11, 12; 39, 40, 41) to be hardened are inductively heated by an inductor (14, 15, 16; 33, 34, 35) individually allocated thereto and are quenched after heating, whereby at least two adjacently arranged surfaces (10, 11, 12; 39, 40, 41) to be hardened are simultaneously heated. The aim of the invention is to make it possible to simultaneously harden closely adjacent surfaces while decreasing the risk of a defective hardening. To this end, the invention provides that, during simultaneous heating of the surfaces (10, 11, 12; 39, 40, 41) to be hardened, the inductor (14, 15, 16; 33, 34, 35) that is individually allocated to one of the surfaces (10, 11, 12; 39, 40, 41) is operated with a frequency (F1, F2; F3, F4) that differs from that of the inductor (10, 11, 12; 39, 40, 41) allocated to the immediately adjacent surface (10, 11, 12; 39, 40, 41) to be hardened.</p> |
