公开(公告)号：EP2471971A1

公开(公告)日：2012-07-04

申请号：EP09848738.2

申请日：2009-08-28

申请人： Daiwa Steel Tube Industries Co., Ltd.

发明人： NAKAMURA Shinichiro ,  TAMAMURA Tadayoshi

IPC分类号： C23C2/38 ,  B21C37/08 ,  B21C37/09 ,  B23K11/087 ,  C23C2/02 ,  C23C2/18 ,  C23C2/20 ,  C23C2/26

CPC分类号： C23C2/36 ,  B05C3/12 ,  B05D1/30 ,  B21C37/065 ,  B21C37/09 ,  B21C37/101 ,  B21C37/105 ,  B21C37/108 ,  B21C37/153 ,  B21C43/00 ,  C23C2/003 ,  C23C2/02 ,  C23C2/38 ,  C23C6/00

摘要： To provide a system and a method capable of easily adjusting a dipping time in a continuous steel pipe manufacturing line.
Provided is a steel pipe manufacturing system that manufactures a steel pipe of which inner and outer faces or any one face thereof is subjected to molten metal-plating from a steel sheet in a continuous manufacturing line, the system including: an inner-face plating performing part that performs molten metal-plating by pouring molten metal to the upper side of the steel sheet corresponding to the inner face of the steel pipe; a steel pipe forming part that obtains a continuous steel pipe by continuously cold-forming the steel sheet subjected to the inner-face plating into a tubular shape and seam-welding a longitudinal end face joint portion of the steel sheet formed in the steel pipe; and an outer-face plating performing part that performs molten metal-plating by dipping the outer face of the steel pipe into the molten metal, in which a dipping length of the molten metal is adjusted in the inner-face plating performing part and/or the outer-face plating performing part.

摘要翻译： 提供一种能够容易地调节连续钢管生产线中的浸渍时间的系统和方法。 本发明提供一种钢管制造系统，其制造在连续制造生产线中从钢板的内外面或其任一面经受熔融金属镀覆的钢管，该系统包括：内表面镀层 通过将熔融金属倾倒到与钢管的内表面相对应的钢板的上侧来进行熔融金属镀敷的部分; 钢管形成部件，其通过将经受内表面电镀的钢板连续冷成形为管状并且对形成在钢管中的钢板的纵向端面接合部进行缝焊而获得连续钢管; 以及外表面电镀执行部，其通过将钢管的外表面浸入熔融金属中进行熔融金属镀层，其中在内表面电镀执行部分中调节熔融金属的浸渍长度和/或 外表面电镀执行部分。