本发明公开了一种TC4钛合金无缝管坯的制造方法，其壁厚均匀、组织均匀且无裂纹。一种TC4钛合金无缝管坯的制造方法，包括如下步骤：通过电火花在TC4钛合金棒材上穿孔形成沿轴向贯通所述TC4钛合金棒材的穿丝孔，在所述穿丝孔中穿入通电的电极丝，沿设定路径移动电极丝或转动TC4钛合金棒材使二者相对运动而在TC4钛合金棒材中切割出一个圆柱体，切割后的TC4钛合金棒材即形成空心管状的TC4钛合金无缝管坯，所述设定路径为圆心位于TC4钛合金棒材轴心线上的圆且该圆所处平面与TC4钛合金棒材的轴心线相互垂直。

 The invention discloses a manufacturing method for a TC4 titanium alloy seamless pipe blank. The TC4 titanium alloy seamless pipe blank is uniform in wall thickness, uniform in structure and free of cracks. The manufacturing method for the TC4 titanium alloy seamless pipe blank comprises the following steps that a TC4 titanium alloy bar is perforated through electric sparks, and a wire penetratinghole penetrating the TC4 titanium alloy bar in the axial direction is formed; an electrified electrode wire penetrates the wire penetrating hole, the electrode wire is moved or the TC4 titanium alloybar is rotated along the set path, so that the electrode wire and the TC4 titanium alloy bar relatively move, a cylinder is cut in the TC4 titanium alloy bar, and the hollow-pipe-shaped TC4 titaniumalloy seamless pipe blank can be formed through the cut TC4 titanium alloy bar. The set path is the circle with the circle center located on the axis line of the TC4 titanium alloy bar, and the planewhere the circle is located is perpendicular to the axis line of the TC4 titanium alloy bar.