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1. 发明授权

US4445354A Procedure and equipment for the manufacture of pipes with external and internal diameters varying in stages 失效
标题翻译：用于制造具有不同阶段的外部和内部直径的管道的程序和设备
公开(公告)号：US4445354A
公开(公告)日：1984-05-01
申请号：US400788
申请日：1982-07-22
申请人： Gerd Pfeiffer , Horst Stinnertz , Fritz Zeunert
发明人： Gerd Pfeiffer , Horst Stinnertz , Fritz Zeunert
IPC分类号： B21B17/02 , B21B21/02 , B21B17/10
CPC分类号： B21B21/02
摘要： The present invention relates to a cold pilger rolling mill and a method and means for manufacturing tubes with externally and/or internally thickened portions by reducing the tubes over a mandrel by means of grooved rolls which are mounted in a reciprocating roll stand. The invention provides several different varying diameter grooves on the rolls, which grooves can be brought into play one after the other by rotation of the rolls through an adjustment of the toothed racks on which the rolls are mounted. Consequently, at least one groove is provided for the rolling out of the required cross-section of most of the tube and a second groove is provided for the rolling of a thickened portion of the tube. It is essential that a smoothing zone is associated with each groove, and a zone for rotating and advancing the tube is associated with at least one of the grooves.
摘要翻译：本发明涉及一种冷轧机轧机，以及一种通过借助于安装在往复式辊架中的带槽轧辊将管子放在心轴上来制造具有外部和/或内部加厚部分的管子的方法和装置。本发明在辊上提供了几个不同的变化直径的凹槽，这些凹槽可以通过辊的旋转通过调节其上安装有辊的齿条而一个接一个地起作用。因此，提供至少一个用于滚出大部分管的所需横截面的凹槽，并且为管的加厚部分的轧制提供第二凹槽。平滑区域与每个凹槽相关是必要的，并且用于旋转和前进管的区域与至少一个凹槽相关联。

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