Yuma Precision is specialized in manufacturing segmented stator structure since 2016. We have evolved from the initial V-sharp interlock to round rivet process, then to straight rivet, while upgrading the structure to skewed groove structure. Each step of trial has significantly improved the product accuracy and motor performance from various aspects.
With the market for motor power density, temperature rise, and vibration has higher requirements, the demand for rivet-free has gradually emerged. After several years of research and development, we have fully mastered the adhesive bonding process for iron cores. The thinnest material currently used in the adhesive process is 0.2mm, and we are now mass-producing silicon steel sheets with thicknesses of 0.2mm, 0.25mm, and 0.35mm.
In the curing process of adhesive-bonded cores, the adhesive can form a strong bonding force on the surface of the silicon steel, which far exceeds of traditional welding or riveting process, thereby enhancing the overall strength of motor stator and rotor cores.
The bonding process involves applying a special adhesive material to the surface of silicon steel sheets to bond multiple sheets together. The advantages of this process include effectively reducing eddy current losses and improving motor efficiency. The bonding process can also avoid the structural damage to the stator and rotor core caused by welding and riveting, thereby enhancing the electromagnetic performance of the motor. Bonded stator and rotor cores offer several benefits, such as increased motor power density, reduced vibration, lower noise, decreased temperature rise, enhanced strength of the stator and rotor cores, high precision, high cleanliness, flexible design, and high efficiency and energy savings.
