What is Stator Bonding Lamination technology and how to do it

    JYSTATOR Stator Bonding Process Introduction

      As we know, all of the motor engineers would like to design the motor with higher efficiency, while some efficiency lost can not be avoid such as the iron loss of the stators. however, when the efficiency target is very strict, a simple improvement on the iron loss decrease would be much helpful for motor efficiency improvement；

     Stator Bonding eliminates the need for a rivet points or welding of the magnetic stator cores, which in turn reduces interlaminar losses.The bonded stator show optimal thermal conductivity,   no hurmony noise, and do not breathe at temperature changes. Therefore, interlaminar corrosion is avoided.

Normally we provide 3 types of lamination technology for stator stack laminations:

A. Interlock: it is common technology that being applied for most of the stators with high production efficiency.

B. Welding: we provide Laser welding for the stator stacks to get narrow welding area. this technology normally used for prototype sample customization and special application where has large torque.

C. Stator Bonding: apply high temperature Glue/Epoxy Adhesive on the stators to glue the stator sheet lamination together and ensure them will not loose. Due to it do not need any interlock point and welding, so it can lower the iron loss as maximum level. Typical process of stator bonding as below:

1. Punch the silicon steel sheet or EDM wire cut the silicon steel sheet.

2. Clean the lamination sheet   to avoid burrs.(TBD)

3. Design Lamination fixture for bonded stators

4. Bond the sheet together by high temperature glue/Epoxy to a stator height as designed.

5. Baking and ensure the varnish is harden for bonded stator (at least two times).

6   Inspection for boned stators

   JYSTATOR Has Over 10 years of bonding stator experiences for both samples and mass production,   by contuniuous investment on new technology, we have accumulated strong know-how on bonding stator process and keep stable quality which ensure the bonded stators has good strengths and also higher lamination factor; at the same time keep good perpendicularity by flatness by designing suitable lamination stacking fixture/Jig;   our advantage for bonding stator as below:

1. Abundant production experiences to keep good quality for bonding stator;

2. High production capacity which can produce over 1k pcs bonded stators every day;

3. Comprehensive inspection with CMM to ensure the quality of bonding stators

4. Minimum 96%-98% lamination factor   for bonded stators（based on 0.2mm silicon steel)

5. Bonding varnish being used is 200 degree with UL Certificate is being applied for bonding stator to ensure its safety for long time running;

More details about stator bonding technology, please feel free to share with us your drawing and technical requirement.

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