Pipe material manufacturing device, pipe material manufacturing method, and pipe material

• Main Authors: MURATA MAKOTO, MOROI TUTOMU, KUBOKI TAKASHI
• Format: Patent
• Language: Chinese; English
• Published: 19.02.2014
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The problem addressed by the present invention is providing a pipe material manufacturing device that can carry out extrusion with a high extrusion force by a simple mechanism and can make the torsion angle of a spiral shaped protruding part formed on the inside surface of a pipe larger and also providing a pipe material manufacturing method and pipe material. A pipe material manufacturing device (10) is provided with a die (16) in which a through hole (22)is formed is provided on the extrusion direction (F) side of a billet (12) and an insertion part (34), which passes through the through hole (22), and the tip of which extends more on the extrusion direction side than the through hole (22). The insertion part (34) is provided on a floating die (30) placed inside a billet accommodating space (S), and a gap is formed between the inner circumference of the through hole (22) and the outer circumference of the insertion part (34). A spiral groove (40) is formed in the side surface side of the insertion part (34)