Preparation method for W-Cu shaped charge liner

The invention discloses a preparation method for a W-Cu shaped charge liner. The preparation method comprises the following steps that copper powder and tungsten powder raw materials are weighed in proportion and are mixed in a ball mill to obtain tungsten and copper mixed powder; a solid model of the shaped charge liner is built, and geometrical information of each cross section is obtained through processing and converted into information of the movement track of a numerical control workbench; a base board is fixed to the five-axis linkage numerical control workbench, and by the adoption of a synchronous powder feeding method, the tungsten and copper mixed powder is fed to be within the irradiation range of laser beams for melting; at the moment, the numerical control workbench moves, so that a cladding layer is formed on the surface of the base board; new settled layers are formed by solidification on the basis of the cladding layer and then are stacked layer by layer until manufacturing of an initial shaped charge liner is completed; the initial shaped charge liner is put into a resistance furnace for recrystallization annealing treatment, then the furnace is cooled, and finally the inner wall surface and the outer wall surface of the shaped charge liner are milled to obtain the W-Cu shaped charge liner. The preparation method for the W-Cu shaped charge liner has the advantages of being short in forming time, high in material utilization rate and low in energy consumption, and is convenient to apply and popularize.