X-ray converting target piece, target layer plate and processing method for target layer plate

The invention discloses an X-ray converting target piece, a target layer plate and a processing method for a target layer plate. The X-ray converting target piece comprises a converting layer and a heat conducting layer, wherein the converting layer is arranged above the heat conducting layer, the converting layer is used for converting electronic beams into X rays, and the heat conducting layer is used for converting electronic beams emitted by the converting layer into X rays and is used for quickly achieving heat diffusion of the converting layer in the vertical scanning direction. The processing method for the target layer plate comprises the following steps of S1, bending a plurality of the X-ray converting target pieces into arc plates, and S2, welding a plurality of the arc plates into a target layer plate. The target layer plate can be manufactured in the processing method. The X-ray converting target piece improves the utilization rate of energy of electronic beams and improves the converting efficie