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    • 9. 发明授权
    • Method for manufacturing heat exchanger tubing
    • 换热器管道的制造方法
    • US4283824A
    • 1981-08-18
    • US68707
    • 1979-08-22
    • Friedrich SchatzGerhard Ziemek
    • Friedrich SchatzGerhard Ziemek
    • B21C37/08B21C37/15B21D53/06F28F1/00B23P15/26
    • B21C37/155B21C37/0803B21D53/06F28F1/006Y10T29/49377Y10T29/53122
    • In accordance with the teachings of the instant invention, methods and apparatus are set forth for the manufacture of discrete lengths of heat exchanger tubing comprised of a thin walled metallic tubular member having a plurality of spaced apart transverse grooves impressed into its outer surface, and expanded end portions whose inner cross sections form symmetrical polygons. Such tubing is manufactured in accordance with the instant invention by the steps of deforming a metal band in a longitudinal direction into a tubular member, continuously seam welding the longitudinal edges of the tubular member, continuously impressing spaced apart grooves into the outer surface of the welded tubular member, transversely cutting the tubular member along smooth portions of the tubular member between selected adjacent transverse grooves to form discrete tube lengths, and expanding the inner cross sections of the end portions of each of such lengths to form symmetrical polygons.
    • 根据本发明的教导,提出了用于制造离散长度的热交换器管道的方法和装置,所述热交换器管道由薄壁金属管状构件构成,所述薄壁金属管状构件具有冲压到其外表面中的多个间隔开的横向槽,并且膨胀 其内部横截面形成对称多边形的端部。 根据本发明,通过将金属带沿纵向变形成管状构件的步骤来制造这种管,连续地对管状构件的纵向边缘进行焊缝焊接,将间隔开的凹槽连续地压入焊接的外表面 管状构件沿着选定的相邻横向槽之间的管状构件的平滑部分横向地切割管状构件以形成分立的管长度,并且使每个这样的长度的端部的内部横截面膨胀以形成对称的多边形。