本发明公开一种血管支架用镁合金细径薄壁毛细管材的一次成型加工方法,步骤如下：将镁合金热挤压坯料400℃-500℃热处理240h-480h；在挤压比100-400,模具预热到350℃-450℃的情况下,对坯料进行直接热挤压加工,从而一次成型生产血管支架用镁合金细径薄壁毛细管材。本方法通过热处理和大挤压比、一次成型加工,突破现有挤压工艺的限制,实现血管支架用镁合金细径薄壁毛细管材一次成型,省略常规使用的拉拔或者轧制等工艺。具有如下优点：成本低、效率高；加工毛细管材尺寸精度高,平直度高；组织均匀,腐蚀均匀；毛细管材的延伸率10%以上,抗拉强度210MPa-260MPa以上,屈服强度50MPa-90MPa。

The invention discloses a one-time forming and processing method of a magnesium alloy thin-diameter thin-walled capillary material for a blood vessel stent. The steps are as follows: a magnesium alloy hot extrusion blank is heat-treated at 400°C-500°C for 240h-480h; the extrusion ratio is 100-400, When the mold is preheated to 350°C-450°C, the blank is directly hot-extruded to produce magnesium alloy thin-diameter and thin-walled capillary materials for vascular stents in one molding. The method breaks through the limitation of the existing extrusion process through heat treatment, large extrusion ratio, and one-time forming process, realizes one-time forming of magnesium alloy thin-diameter thin-walled capillary materials for vascular stents, omitting conventional drawing or rolling processes. It has the following advantages: low cost and high efficiency; processing capillary material has high dimensional accuracy and high flatness; uniform structure and uniform corrosion; capillary material elongation is more than 10%, tensile strength is more than 210MPa-260MPa, and yield strength is 50MPa-90MPa .