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2. 发明公开

EP3081319A1 HOLLOW FAN BLADE PREPARATION METHOD 有权转让
标题翻译： HERSTELLUNGSVERFAHRENFÜRHOHLEGEBLÄSESCHAUFEL
公开(公告)号：EP3081319A1
公开(公告)日：2016-10-19
申请号：EP14870491.9
申请日：2014-12-11
申请人： Institute For Metals Superplasticity Problems Of The Russian Academy Of Sciences , Open Joint Stock Company "Aviadvigatel" , Joint Stock Company "UFA Engine Industrial Association"
发明人： INOZEMTSEV, Alexander Alexandrovich , MULYUKOV, Radik Rafikovich , PAVLINICH, Sergey Petrovich , ARTYUKHOV, Alexander Viktorovich , SAFIULLIN, Rinat Vladikovich , TRIFONOV, Vadim Gennadievich , KHARIN, Sergey Alexandrovich , MANAPOV, Irek Usmanovich , MOROZOV, Mikhail Alexandrovich
IPC分类号： B21D53/78 , B23P15/04 , B21K3/04 , B21D26/02
摘要： The invention relates to metal forming using diffusion welding and superplastic forming. Stop-off material is preliminarily applied in a predetermined screen pattern to areas where surfaces of skin and core preforms come into contact. Skin preforms are provided with a groove, and core preform is provided with a slot for mounting at least one tube. A stack is sealed along edges with the exception of where at least one tube is to be mounted. A tube is mounted to be connected to a collector zone, and oxygen and binder of the stop-off material are removed from cavities in the stack. The stack is fully sealed, heated, and the preforms are diffusion-welded in predetermined areas, also along an entrance edge, an exit edge and a peripheral edge. An integral structural preform is given an airfoil shape and subjected to superplastic forming by supplying working fluid into cavities between the skin and core preforms through also at least one tube. The collector zone is disposed on the side of the stack, which corresponds to the peripheral edge of the blade. For mounting one or more tubes for supplying working fluid at superplastic forming, the groove in the skin preforms and the slot in the core preform are provided at a distance from the outer boundary of the entrance edge or exit edge less than L/3, where L is the length of the blade chord along the peripheral edge. It is thus possible to eliminate risk of defects during blade forming without compromising performance characteristics of the blade and increase in labor intensity of producing same.
摘要翻译：本发明涉及使用扩散焊接和超塑性成形的金属成形。将预定的屏幕图案预先施加到皮肤和纤维预制件的表面接触的区域。皮肤预成型件设置有凹槽，并且芯预制件设置有用于安装至少一个管的槽。堆叠沿着边缘密封，除了要安装至少一个管的地方。管被安装成连接到收集器区域，并且停止材料的氧气和粘合剂从堆叠中的空腔移除。堆叠被完全密封，加热，并且预成型件也在沿着入口边缘，出口边缘和周边边缘的预定区域中扩散焊接。通过将至少一个管子提供给皮肤和纤芯预成型件之间的空腔中，将工作流体供给到工作流体中，使整体结构预制件具有翼型形状并进行超塑性成形。收集器区域设置在堆叠的侧面，其对应于叶片的周边边缘。为了安装用于在超塑性成形时供应工作流体的一个或多个管，皮肤预制件中的凹槽和芯预制件中的槽设置在距离入口边缘或出口边缘的外边界小于L / 3的距离处，其中 L是沿边缘的叶片弦的长度。因此，可以在不影响叶片的性能特性的同时，消除叶片成形时的缺陷风险，增加制造叶片的劳动强度。

3. 发明公开

EP2368651A1 METHOD FOR PRODUCING A HOLLOW FAN BLADE 审中-公开
标题翻译： VERFAHREN ZUR HERSTELLUNG EINER HOHLENLÜFTERSCHAUFEL
公开(公告)号：EP2368651A1
公开(公告)日：2011-09-28
申请号：EP09756124.5
申请日：2009-10-12
申请人： Open Joint Stock Company "Aviadvigatel" , Institute For Metals Superplasticity Problems Of The Russian Academy Of Sciences
发明人： KOKSHAROV, Nikolay Leonidovich , KHARIN, Sergey Alexandrovich , KLIMOV, Valery Nikolaevich , MOROZOV, Mikhail Alexandrovich , SAIRANOV, Azat Nailievich , DONGAUZER, Konstantin Alexandrovich , ANDREYCHENKO, Igor Leonardovich , MULYUKOV, Radik Rafikovich , KRUGLOV, Alexey Anatolievich , LUTFULLIN, Ramil Yavatovich , SAFIULLIN, Rinat Vladikovich , RUDENKO, Oleg Alexandrovich , MUKHAMETRAKHIMOV, Minnaul Khidiyatovich
IPC分类号： B21D53/78 , B23P15/04 , B21K3/04
CPC分类号： B21D53/78 , B21D26/021 , B21D26/055 , B21K3/04 , B21K23/00 , B23K20/021 , B23K20/18 , B23K2201/001 , B23P15/04 , F01D5/147 , F05D2230/236 , F05D2300/133 , Y02T50/673
摘要： A method for manufacturing a hollow fan blade of a titanium alloy, said blade consisting of skins and a filler forming stiffeners, comprises the step of working skin workpieces with a preformed blade root portion, during which working on surfaces of the skin workpieces, areas to be bonded to a filler workpiece are shaped in the form of projections with a surface flat in a cross-section, and areas to be not bonded to the filler workpiece are shaped in the form of recesses, respectively, wherein at least a part of a surface of recesses opposite to projections in a stack assembled for diffusion welding is made flat in a cross-section, and also comprises the steps of: applying a bond preventing coating onto surfaces of workpiece areas to be not bonded; assembling the skin and filler workpieces into a stack; diffusion welding the skin and filler workpieces; forming stiffeners by superplastic forming, the method further comprises the step of providing the skin and filler workpieces with an aerodynamic profile by applying a deforming load thereto, including forming a pressure face and a suction face of the blade and twisting its airfoil. The method is characterized in that said projections and recesses are made on the surfaces of the skin workpieces prior to providing them with the aerodynamic profile, while the step of providing the workpieces with the aerodynamic profile is performed after diffusion welding.
The method is particularly applicable to aircraft engine building.
摘要翻译：一种用于制造钛合金中空风扇叶片的方法，所述叶片由表皮和填料形成加强件组成，包括用预成型叶片根部对皮肤工件进行加工的步骤，在此期间对皮肤工件的表面进行加工，被结合到填充工件的形状是以横截面为平坦的凸起的形式形成的，并且不结合到填充工件的区域分别成形为凹部的形式，其中至少一部分在用于扩散焊接组装的叠层中与突起相对的凹部的表面在横截面上变得平坦，并且还包括以下步骤：将不粘结防止涂层施加到不粘合的工件区域的表面上; 将皮肤和填充工件组装成堆叠; 扩散焊接皮肤和填充工件; 通过超塑性成形形成加强件，该方法还包括通过向其施加变形载荷来为皮肤和填料工件提供空气动力学特性的步骤，包括形成叶片的压力面和吸力面并扭转其翼型。该方法的特征在于，在为其提供空气动力学特性之前，所述突起和凹陷在皮肤工件的表面上制成，而在扩散焊接之后执行提供工件的步骤。该方法特别适用于飞机发动机的建造。

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