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1. 发明申请

WO2014169366A2 PROCESS FOR PRODUCING A MULTILAYER PIPE HAVING A METALLURGICAL BOND BY DRAWING, AND MULTILAYER PIPE PRODUCED BY THIS PROCESS 审中-公开
标题翻译：通过绘图制造具有冶金粘结剂的多层管道的方法以及由该方法生产的多层管道
公开(公告)号：WO2014169366A2
公开(公告)日：2014-10-23
申请号：PCT/BR2014/000249
申请日：2014-07-23
申请人： VALLOUREC TUBOS DO BRASIL S.A.
发明人： SILVEIRA E SILVA, Júlio Márcio , EBELING, Timo , DA SILVA PERDIGÃO, Hezick , GRANHA GIORGINI, Danielle , DA SILVA PENNA, Antônio Wagner
CPC分类号： F16L9/02 , B21C1/24 , B21C9/00 , B21C37/06 , B21C37/154 , F16L58/08
摘要： The invention relates to a process for producing a multilayer pipe (1 ) from a tubular element having a metallurgical bond comprising at least one outer pipe (10) of metallic material and one inner pipe (20) of metallic material arranged within the outer pipe, the inner surface of the outer pipe (10) being mechanically bonded to the outer surface of the inner pipe (20) at least in parts of their interface, in which, in a production line, the tubular element is simultaneously heated and drawn, wherein each portion of the tubular element is submitted to heating by induction and then to hot-drawing, wherein the tubular element is drawn with a mandrel located therein. Through this process, the existing mechanical connection between the pipes is trans- formed in a metallurgical connection. The invention also relates to a multilayer pipe (1 ) produced for this process, wherein the outer pipe (10) is made of a carbon manganese steel alloy and the inner pipe (2) is made of a corrosion-resistant alloy.
摘要翻译：本发明涉及一种用于从具有冶金结合的管状元件制造多层管（1）的方法，所述管状元件包括金属材料的至少一个外管（10）和布置在外管内的一个金属材料内管（20）所述外管（10）的内表面至少在其界面的一部分机械地结合到所述内管（20）的外表面，其中在生产线中，所述管状元件被同时加热和拉伸，其中管状元件的每个部分通过感应加热，然后进行热拉伸，其中管状元件用位于其中的心轴拉伸。通过这一过程，管道之间的现有机械连接在冶金连接中传输。本发明还涉及一种用于该方法生产的多层管（1），其中外管（10）由碳锰钢合金制成，内管（2）由耐腐蚀合金制成。

2. 发明申请

WO2014169367A2 PROCESS FOR PRODUCING A MULTILAYER PIPE BY EXPANSION AND MULTILAYER PIPE PRODUCED BY SAID PROCESS 审中-公开
标题翻译：通过膨胀生产多层管道的工艺和由所述生产工艺生产的多层管道
公开(公告)号：WO2014169367A2
公开(公告)日：2014-10-23
申请号：PCT/BR2014/000250
申请日：2014-07-23
申请人： VALLOUREC TUBOS DO BRASIL S.A.
发明人： SILVEIRA E SILVA, Júlio Márcio , EBELING, Timo , DA SILVA PERDIGÃO, Hezick , GRANHA GIORGINI, Danielle , ALVES PINHEIRO, Gustavo , AMES, Jochen Peter , DA SILVA PENNA, Antônio Wagner
CPC分类号： B21C37/154 , B21C37/06 , F16L9/02 , F16L58/00
摘要： A process for producing a multilayer pipe by expansion is disclosed, with or without heating, in which a multilayer pipe (1 ) comprises at least one outer pipe of metallic material (10) and an inner pipe of metallic material (20), the inner pipe of metallic material (20) having a yield strength lower than the yield strength of the outer pipe (23) and an external diameter smaller than the internal diameter of the outer pipe. The process for producing the multilayer pipe comprises a mounting step (34) between the pipes (10, 20), wherein the inner pipe is inserted inside the outer pipe, and at least one mechanical expansion step (36), comprising moving a mandrel (2) longitudinally and internally in the inner pipe (20) while the outer pipe and the inner pipe are held at a fixed position, wherein at least part of the mandrel (2) has a greater external diameter than the internal diameter of the inner pipe. When the pipes are subjected to a process of cold expansion, a "lined pipe" is obtained, which is characterized by mechanical bonding between the pipes. When the pipes are subjected to a process of hot expansion, a "clad pipe" is obtained, which is characterized by metallurgical bonding between the pipes.
摘要翻译：公开了一种通过膨胀制造多层管的方法，其中加热或不加热，其中多层管（1）包括至少一个金属材料外管（10）和一个内管金属材料（20），金属材料（20）的内管具有比外管（23）的屈服强度低的屈服强度和小于外管内径的外径。用于制造多层管的方法包括在管（10,20）之间的安装步骤（34），其中内管插入到外管的内部，并且包括至少一个机械扩张台阶（36），包括移动心轴 2）在内管（20）内纵向和内部，而外管和内管保持在固定位置，其中心轴（2）的至少一部分的外径大于内管的内径。当管道经受冷膨胀过程时，“衬里管道” 其特征在于管道之间的机械结合。当管子经受热膨胀过程时，“复合管” 其特征在于管道之间的冶金结合。

3. 发明申请

WO2014169365A2 MULTILAYER PIPE 审中-公开
标题翻译：多层管道
公开(公告)号：WO2014169365A2
公开(公告)日：2014-10-23
申请号：PCT/BR2014/000248
申请日：2014-07-23
申请人： VALLOUREC TUBOS DO BRASIL S.A.
发明人： SILVEIRA E SILVA, Júlio Márcio , EBELING, Timo , DA SILVA PERDIGÃO, Hezick , GRANHA GIORGINI, Danielle
CPC分类号： F16L9/02 , B21C37/154 , F16L58/08
摘要： The present invention relates to a multilayer pipe (1 ) comprising a base tube (10) of metallic material and at least one outer coating tube (30) of metallic material disposed coaxially and externally in relation to the base tube, and the base tube (10) and the at least one outer coating tube (30) are mechanically bonded together with an interference fit, and metallurgically bonded. The multilayer pipe is a tube which has a homogeneous distribution of material along its longitudinal length.
摘要翻译：本发明涉及一种多层管（1），其包括金属材料的基管（10）和至少一个金属材料的外部涂层管（30），所述金属材料的外部涂层管（30）相对于基管和基管（10）以及至少一个外涂层管（30）通过过盈配合机械地结合在一起，并且冶金结合。多层管是沿其纵向长度均匀分布的管。

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