Worm ion nitriding temperature equalizing device

The invention relates to a worm ion nitriding temperature equalizing device, which comprises a base plate and a top cover, wherein the base plate is provided with a sleeve I for vertically fixing a worm and support posts annularly arrange around the periphery of the sleeve I; an auxiliary cathode I is placed on the support post; the top cover is fixed at the other end of the worm; an auxiliary cathode II is suspended below the top cover; when in use, luminance build-up warming is carried out on the auxiliary cathode I and the auxiliary cathode II together with spare parts; and therefore, the temperature in near space is increased, the radiation loss of spare parts is reduced, the temperature uniformity of large worm ion nitriding is improved, the surface nitriding area of worm workpiece is greatly increased, the consistency of the hardness and layer depth of spare parts is greatly improved, simultaneously the labor intensity of operators is greatly lessened, the efficiency of worm ion nitriding is improved, t