Method for preparing large-size tungsten copper faced plasma component

The invention belongs to the field of energy materials, and relates to a method for preparing a large-size tungsten copper faced plasma component. The method is characterized in that copper or chromium zirconium copper with the thickness of 10-30mm serves as a substrate, a pure tungsten plate with the thickness of 0.25-0.5mm serves as a covering plate, a parallel installation explosion method is adopted, the size of a medicine box is the same as that of the covering plate, the rock expanded ammonium nitrate explosive is used, the density is 1.0g/cm , the explosion velocity is about 2000-2300m/s, the explosive payload in the unit area is 1.0g/cm , the installation gap is 3-5mm, sandy soil serves as a base, and the explosion is started from the middle of a short edge. According to the method, large-area welding can be achieved, two materials including the tungsten and the copper which are extremely different in performance such as the elasticity modulus, the hardness, the thermal expansion coefficient and the melting point can be firmly and fixedly welded together in an instant, the utilized energy sources are the explosive which is low in proce and easy to obtain, and the method is simple in technology and easy to operate.