Method for explosive machining of polycrystalline diamond and capable of improving conversion rate

The invention provides a polycrystalline diamond explosive machining method capable of improving the conversion rate, and relates to the technical field of material science. Constructing an explosion mechanical model containing a phase change flow field and an impact flow field which are in bidirectional connection, performing flow field simulation analysis and decision, and determining an initial processing strategy; carrying out airflow energy gathering analysis under the impact of the flyer, and determining an energy gathering effect relationship; determining a processing environment field domain and field domain influence characteristics; compensating and correcting the initial processing strategy, and determining a pre-processing strategy; the explosion processing control of the polycrystalline diamond is performed based on the pre-processing strategy, so that the technical problems of low diamond conversion rate, complex process, high processing cost and poor stability of product quality during explosio