Preparation method of copper-zinc composite plates and mold for achieving same
The invention discloses a preparation method of copper-zinc composite plates and a mold for achieving the same. The preparation method comprises the following steps of 1) heating surface-finished copper plates and performing heat preservation on the copper plates for standby; 2) smelting zinc ingots inside a smelting furnace to obtain liquid zinc; 3) putting the heat-preserved copper plates into the preheated mold, pouring the liquid zinc on the upper surface of the copper plates, performing pressurization rapidly until reaching a pressure of 800-1500 MPa, performing pressure maintaining for 1-2 minutes, and then performing demoulding and air cooling to obtain the copper-zinc composite plates. According to the preparation method of the copper-zinc composite plates, the liquid zinc is poured onto the preheated copper plates, pressurization is performed rapidly to achieve one-step solid-liquid composition, further the liquid zinc solidifies under pressure, so that mutual diffusion of copper and zinc can be facilitated, casting effects can be reduced, good copper-zinc alloy bonding interface layers are formed, the bonding force of the bonding interface layers is enhanced and further the strength of the copper-zinc composite plates is improved; the one-step molding performance is good, the molded parts are unlimited in shape, subsequent processes such as rolling can be omitted, the process is simple and the operation is convenient. 1. A copper-zinc composite plate preparation method, characterized in that comprises the following steps: 1) surface treatment of the copper plate is heated to the 300-500 [...] , thermal insulation spare; 2) within the ingot into the melting furnace for smelting, to the 410-480 [...] zinc; 3) step 1) the resulting insulation copper plate into the pre-heated mold, the copper plate on the upper surface of the casting step 2) the resulting molten zinc, the surface of the liquid quickly pressurizing 800-1500MPa, pressure maintaining 1-2min, demoulding, air-cooled, to obtain. 2. Method for preparing copper-zinc composite according to Claim 1, characterized in that step 1) the surface treatment to the surface of a copper plate and sequentially, alkali cleaning, acid cleaning, washing the processing. 3. Method for preparing copper-zinc composite according to Claim 1, characterized in that step 3) in the preheating temperature of the mold for the 150-300 [...]. 4. For implementing the method for the preparation of copper zinc composite mould according to Claim 1, characterized in that comprising a concave die and a male die, including the shearing of the sleeve is of an annular cross section, the bottom of the body is provided with a side and the inner surface of the sleeve body is closely matched with the gasket; the outer surface of the die by the inner surface of the sleeve with the inserted fitting.