The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2025
Filed:
Jul. 10, 2024
Taiyuan University of Technology, Taiyuan, CN;
Jianchao Han, Taiyuan, CN;
Yanjun Wang, Taiyuan, CN;
Yi Jia, Taiyuan, CN;
Xinlong Zhang, Taiyuan, CN;
Wei Zhang, Taiyuan, CN;
Yizhi Zhang, Taiyuan, CN;
Shuzhi Zhang, Taiyuan, CN;
Changjiang Zhang, Taiyuan, CN;
Tao Wang, Taiyuan, CN;
TAIYUAN UNIVERSITY OF TECHNOLOGY, Taiyuan, CN;
Abstract
Provided is an efficient preparation method of a bimetallic seamless composite pipe, and belongs to the technical field of steel pipe manufacture. The efficient preparation method of the bimetallic seamless composite pipe includes following steps: sheathing a base pipe blank on a cladding pipe blank to obtain a composite pipe blank, and carrying out a stress relief annealing treatment on the composite pipe blank, where the base pipe blank and the cladding pipe blank are made of different materials; heating the composite pipe blank after the stress relief annealing treatment to a hot working window temperature, and sheathing on a core rod of an extrusion cylinder after an insulation treatment, and then extruding along an axial direction of the extrusion cylinder to obtain a bimetallic seamless composite pipe.