The invention provides a vacuum milling method for a
metal compound plate, which relates to a compound plate production method and comprises the following steps that: 1, circumference lead angle beveled edges are processed on the circumference of the single side of a base plate, and the circumference dimension of a stainless steel plate is smaller than the dimension of the circumference lead angle beveled edges; 2, a right-angle hole is drilled between the lead angle beveled edges; 3, the stainless steel plate is flatly paved on the lead angle beveled edges side of the base plate, in addition, a
soldering flux layer is flatly paved between the stainless steel plate and the base plate, and the circumference sealing
welding is carried out on a pressure platform; 4, the
vacuum pumping is carried out through the right-angle hole of the base plate, and the sealing and plugging is carried out after the
vacuum pumping; 5, the two prepositive blank stainless steel surfaces are combined, in addition, a high-temperature adhesion-prevention agent layer is flatly paved between the two prepositive blank stainless steel surfaces, then, separation plates with the same circumference lengths are in dot
welding on the circumference, and next,
submerged arc welding sealing
welding is carried out between the two lead angle beveled edges and the separation plates; 6, a plurality of vent holes are drilled on a sealing and welding ring frame and the separation plates, 7, the hot milling is carried out; and 8, the edge milling separation is carried out. The vacuum milling method has the advantages that the prepositive blank
processing and the
vacuum pumping are firstly carried out, then, air holes are drilled, excessive air can be exhausted during the milling, and the plate
material quality is ensured.