Manufacturing method of nickel-copper alloy coiled tubing

• Main Authors: WANG HAOLIN, DONG JIAN, GAO RUNQIU, LIU YUEMING, DUAN JIANLIANG
• Format: Patent
• Language: Chinese; English
• Published: 25.08.2023
• Subjects: COMBINED OPERATIONS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; TRANSPORTING; UNIVERSAL MACHINE TOOLS

The invention discloses a manufacturing method of a nickel-copper alloy coiled tubing, and relates to the technical field of coiled tubing manufacturing. The method comprises the steps that steel strip plates are in butt joint, and the welding mode of plasma and inert gas shielding tungsten electrode welding is adopted for operation; welding the steel strip to form a continuous steel strip of the required length; steel belt pipe manufacturing is conducted, and the shape of the coiled tubing is formed through a pipe forming device; in the pipe manufacturing process, a combined welding mode that ultra-narrow gap plasma welding with high penetrability is used for bottoming and inert gas shielding tungsten electrode welding is used for welding a cover face is used for forming and grinding of pipe manufacturing longitudinal welding seams; a composite heating mode of combining an intermediate frequency heating furnace and a muffle furnace is adopted for heating the pipe, and then finishing and nondestructive testin