Method for manufacturing large-diameter seamless titanium tube

The invention discloses a large-diameter seamless titanium tube manufacturing method, and belongs to the field of metal rolling machining. The invention discloses a manufacturing method of a large-diameter seamless titanium tube. The manufacturing method comprises the following steps: S1, heating a tube blank; s2, the heated tube blank is subjected to bacterium type perforating, and a tubular billet is obtained; and S4, external sizing is conducted on the pierced billet, then straightening with temperature is conducted, the temperature of straightening with temperature ranges from 260 DEG C to 540 DEG C, internal sizing is conducted, and the large-diameter seamless titanium tube is obtained. The manufacturing method has the advantage that the large-diameter seamless titanium pipe with good performance can be manufactured. 本申请公开了一种大口径无缝钛管制造方法，属于金属压延加工领域。一种大口径无缝钛管制造方法，包括以下步骤：S1.将管坯加热；S2.加热后的管坯进行菌式穿孔，得到毛管；S3.对毛管进行轧制，得到荒管：S4.对荒管进行外定径，然后进行带温矫直，带温矫直的温度为260~540℃，再进行内定径，得到大口径无缝钛管。本申请具有制造出性能良好的大口径无缝钛管的优点。