VERFAHREN ZUR HERSTELLUNG DURCH SCHWEISSEN VON EINEM MAST AUS ZWEI MATERIALIEN

摘要

The process for manufacturing a bimaterial metallic column such as a public lighting column from two designs having an invisible joint between the designs without external ring and/or additional support, comprises continuously plasma arc welding a joining surface of a small base of the second design and a large base of the first design to form a cross welding seam with 100% penetration, parallelly polishing the cross welding seam, and rotating the welded designs before assembling the column so that the polished face is present on outside of the finished column. The process for manufacturing a bimaterial metallic column such as a public lighting column from two designs having an invisible joint between the designs without external ring and/or additional support, comprises continuously plasma arc welding a joining surface of a small base of the second design and a large base of the first design to form a cross welding seam with 100% penetration, parallelly polishing the cross welding seam, and rotating the welded designs before assembling the column so that the polished face is present on outside of the finished column. The first and second designs have an isosceles trapezoid shape, and are prepared from a first and a second metallic material respectively. The second design extends from the first design with an accuracy of one millimeter. The first metallic material is an alloy carbon steel. The second metallic material is an alloy of stainless steel.