Vertical composite blank layer-to-layer vacuum nickel coating device and vacuum nickel coating method

The invention discloses a vertical composite blank layer-to-layer vacuum nickel coating device and vacuum nickel coating method. The device comprises a vacuum pipe, an upper box, a low-alloy steel basic layer, a fixed support, heating plates, a stainless steel composite layer, gas cylinders, a graphite runner, a gas division plate, a gas blowing pipe, an induction electric furnace, heating pipes,an electromagnetic oscillator, a lower box and fixed rods. The lower end of the graphite runner is located above the bottom of the induction electric furnace. The heating plates are fixed to the threefaces, close to a film coating area, of a composite blank through the fixed support and the gas cylinders. The gas division plate is placed above the induction electric furnace, and four holes are formed in the face, facing the induction electric furnace, of the gas division plate and are distributed annularly. Compared with an existing middle interlayer forming method, according to the layer-to-layer vacuum nickel coatin