Abstract: For large thin-walled circular workpieces made of 06Cr19Ni10 stainless steel material, where the radial dimension is much larger than the axial dimension, it is prone to warping deformation, resulting in problems such as front and back runout and surface roughness accuracy exceeding the tolerance.At the same time, it has the characteristics of Z-shaped coatings. It is difficult to ensure that the segments are qualified and it is not easy to ensure the requirements of precision size and position tolerance.By analyzing the characteristics of stainless steel material and workpiece structure, a combination fixture and process flow were designed.Practice has proven that the designed combination fixture and processing technology ensure the accuracy of the workpiece.This method has good reference and promotion value for the production of similar parts.