Piezoelectric copolymer thick film forming die and processing mode

According to the piezoelectric copolymer thick film forming die and the machining method, the forming bottom face, the forming circumferential face and the forming top face are each provided with a hard metal coating, the surface roughness Ra of each hard metal coating is smaller than or equal to 0.02, and the planeness of the hard metal coating on the forming bottom face is better than 0.02 mm; the flatness of the hard metal coating on the forming top surface is superior to 0.02 mm, and the parallelism of the hard metal coating on the forming bottom surface and the hard metal coating on the forming top surface is superior to 0.02 mm; according to the piezoelectric copolymer thick film forming die and the machining mode, piezoelectric copolymer thick films of different models can be formed through the arrangement of the cross section shape and the height of the female die cavity; the hardness, wear resistance, temperature resistance, corrosion resistance and other properties of the lower die and the upper die