2025-10-18
Precision Rework: How Our Varnish Stripping Machine Protects Delicate Hairpin Stators.
The proliferation of high-density hairpin stators in EVs and industrial applications presents a unique challenge for motor repair and rework processes. The tightly packed, rectangular copper conductors in a hairpin stator, placed with minimal clearance by a Hairpin Winding Machine, are far more sensitive to damage during varnish removal than traditional round wire windings. Overheating or mechanical force applied during stripping can compromise the copper's integrity, ruin the lamination steel's magnetic properties, or induce micro-cracks that lead to premature failure upon re-energizing.
Our advanced Varnish Stripping Machine is specifically designed with the sensitivity of modern stators in mind. It employs a high-precision, non-contact method that targets only the organic varnish coating. This process ensures the complete removal of the insulating material without imparting undue heat or mechanical stress to the underlying conductors or the laminated steel core. The controlled environment prevents oxidation and preserves the electrical performance of the magnetic steel. For manufacturers who produce high-value hairpin stators, and for repair facilities that service them, our machine is an insurance policy. It guarantees that the core component of the motor—the stator—is perfectly prepared for re-winding or new insulation, preserving the high efficiency and power density originally achieved by the precision winding process.
