VERFAHREN ZUR HERSTELLUNG EINES METALLROHRES MIT SPIRALRIPPEN

• Main Authors: NAKASUJI, KAZUYUKI GEN. RES. LAB. OF SUMITOMO, AMAGASAKI-SHI HYOGO-KEN, JP, HAYASHI, CHIHIRO GEN. RES. LAB. OF SUMITOMO, KURODA, KOUICHI GEN. RES. LAB. OF SUMITOMO
• Format: Patent
• Language: German
• Published: 25.03.1993
• Edition: 5
• 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 present invention relates to a method of manufacturing a metallic tube (T) with spiral fin, used as a heat transfer tube of a heat exchanger and the like. According to the manufacturing method of the present invention, a solid metallic bar (B1) or metallic elementary hollow bar provided with a s...