Manufacturing method for controlling deformation of ferrite/martensitic steel hexagonal pipe

The invention belongs to the technical field of metallurgical materials, and relates to a manufacturing method for controlling deformation of a ferrite/martensitic steel hexagonal pipe. The manufacturing method sequentially comprises the following steps of (1), carrying out hot extrusion; (2), rolling and annealing intermediate cold; (3), rolling a circular tube into a hexagonal tube; (4), normalizing and tempering an intermediate pipe; (5), carrying out cold rolling on finished product; (6), carrying out final heat treatment. By means of the manufacturing method for controlling deformation of the ferrite/martensitic steel hexagonal pipe, the obtained hexagonal pipe can meet the strict requirements of a fast reactor core assembly on the straightness, the wall thickness, the inner opposite side distance, the torsion resistance and the like of the ferrite/martensitic steel hexagonal pipe. 本发明属于冶金材料技术领域，涉及一种铁素体/马氏体钢六角管控制变形的制造方法。所述的制造方法依次包括如下步骤：(1)热挤压；(2)中间冷轧和退火；(3)圆管轧六角形管；(4)中间管正火和回火；(5)成品冷轧；(6)最终热处理。利用本发明的铁素体/马