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1. 发明申请

US20140283942A1 METHOD TO MAKE A CURVED TUBULAR ELEMENT TO CONVEY ABRASIVE MATERIALS SUCH AS CONCRETE OR SUCHLIKE, AND CURVED TUBULAR ELEMENT THUS OBTAINED 审中-公开
标题翻译：制造弯曲管状元件以输送混合材料或混合物的方法，以及获得的弯曲管状元件
公开(公告)号：US20140283942A1
公开(公告)日：2014-09-25
申请号：US14219188
申请日：2014-03-19
申请人： CIFA SPA
发明人： Fabio FERRE , Domenico MOTTARELLA , Mauro Marco CORTELLINI
IPC分类号： F16L9/14
CPC分类号： F16L43/002 , B65G53/523 , B65G2207/48 , F16L43/001 , F16L57/06
摘要： A method to make a curved tubular element comprising obtaining a first external curved tubular component, and a second internal curved component made of a material with a greater resistance to wear than the first external curved tubular component, and having a cross section which covers a portion of the internal surface of the first external curved tubular component. The first external curved tubular component includes at least two parts. Each of the parts has a cross section which is a respective portion of the complete tubular section of the first external curved tubular component; to bring the at least two parts near each other along respective connection edges, disposing the second internal curved component internally in contact with at least one of the two parts; to weld the at least two parts to define the first external curved tubular component and to enclose therein the second internal curved component.
摘要翻译：一种制造弯曲管状元件的方法，包括获得第一外部弯曲管状部件和由与第一外部弯曲管状部件相比具有更大耐磨性的材料制成的第二内部弯曲部件，并且具有覆盖部分的横截面的第一外部弯曲管状部件的内表面。第一外部弯曲管状部件包括至少两部分。每个部件具有横截面，该横截面是第一外部弯曲管状部件的完整管状部分的相应部分; 使所述至少两个部件沿着相应的连接边缘彼此靠近，将所述第二内部弯曲部件内部设置成与所述两个部件中的至少一个接触; 以焊接所述至少两个部分以限定所述第一外部弯曲管状部件并且在其中包围所述第二内部弯曲部件。

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