镍铝青铜电机转子的搅拌摩擦焊接

Friction Stir Welding of Rotor of Ni-Al Bronze Motor

由镍铝青铜ZCuAl_(9)NiFe_(4)Mn_(2)制作的内护套、外护套、上盖板和下盖板,磁轭和磁钢组成了在海水中工作的电机转子。为了对磁极进行保护,需要在完成充磁的强磁性条件下采用焊接的方式将内护套、外护套、上盖板和下盖板焊为一体,且焊缝能承受1.5 MPa的气压。本文从搅拌头设计,焊接工艺参数设计,焊缝性能等方面摸索焊接电机转子所需要的工艺参数;同时解决了焊接电机转子所需要的全部关键技术问题;电机转子焊接后通过各种检测,确认合格。本电机转子的成功焊接为强磁场条件下铜合金的焊接提供了实用的工艺方法。

The inner sheath,outer sheath,upper cover plate and lower cover plate,yoke and magnetic steel made of nickel aluminum bronze ZCuAl_(9)NiFe_(4)Mn_(2) constitute the motor rotor working in sea water.In order to protect the magnetic pole,it is necessary to weld the inner sheath,outer sheath,upper cover plate and lower cover plate as a whole under the condition of strong magnetic after magnetization,and the welding seam can withstand 1.5MPa air pressure.In this paper,from the design of stirring needle,welding process parameters design,weld performance and other aspects to explore the required process parameters for welding motor rotor;At the same time,all the key technical problems needed to weld the motor rotor are solved;After welding,the motor rotor passed various tests and was confirmed to be qualified.The successful welding of the motor rotor provides a practical process for the welding of copper alloy under the condition of strong magnetic field.