Cold drawing method of large-size titanium alloy rectangular pipe

• Main Authors: ZHANG GUOZHONG, REN JIAJIE, ZHOU CHANGGUI, WU XIANGGUANG, LIAN WEIGUO
• Format: Patent
• Language: Chinese; English
• Published: 27.08.2021
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The invention relates to the technical field of TC4 titanium alloy rectangular pipe machining and application, in particular to a cold drawing method of a large-size TC4 titanium alloy rectangular pipe. The method comprises the following steps: firstly, arranging the TC4 titanium alloy round pipe on cold drawing equipment, and smearing a lubricant on the surface layer; after the lubricant is smeared, cold-drawing the titanium alloy circular tube into a TC4 titanium alloy elliptical pipe by using a die, and heating the TC4 titanium alloy circular pipe to 400 +/-50 DEG C in the cold-drawing process; after cold drawing is completed, the surface layer of the TC4 titanium alloy oval tube is continuously coated with the lubricating agent; After the lubricant is smeared, cold-drawing the TC4 titanium alloy elliptical pipe into a titanium alloy square pipe by using a die, and heating the TC4 titanium alloy elliptical pipe to 400 +/-50 DEG C in the cold-drawing process; after cold drawing is completed, continuously co