公开(公告)号：US20040003645A1

公开(公告)日：2004-01-08

申请号：US10311810

申请日：2002-12-20

申请人： WITZIG & FRANK GMBH

发明人： Walter Viegener ,  Jurgen Nageler ,  Walter Bauer

IPC分类号： B21D039/08

CPC分类号： B21D41/02 ,  B21C37/28 ,  B21D17/02 ,  B21D17/04

摘要： The disclosed process permits the production of special steel press fittings practically in a single work step, which comprises two process steps, which can be performed simultaneously, or also one after the other. The cut to size blank is widened in a die and is upset in order to form the desired pipe connection areas. The process has been shown to be dependable for special steel press fittings. Other pressure-resistant and tough metals can also be employed. The process is particularly suitable in connection with a following roller-burnishing step or grinding step for producing press fittings from welded special steel pipes.

摘要翻译： 所公开的方法允许实际上在单个工作步骤中生产特殊的钢压配件，其包括可以同时进行或者一个接一个地执行的两个工艺步骤。 切割成尺寸的坯料在模具中变宽并且不舒适以形成所需的管连接区域。 该工艺已被证明对于特殊的钢压配件是可靠的。 也可以使用其它耐压和韧性金属。 该方法特别适用于从焊接的特殊钢管生产压配件的后续辊抛光步骤或研磨步骤。