• 2026-06-10

  Core Principle: Excessive Contact Resistance Terminal overheating is fundamentally caused by abnormally high contact resistance. According to Joule’s law, high resistance generates massive heat when current passes through. Once the terminal contact surface fails to fit tightly, resistance rises sharply, forming a vicious cycle: heat accumulation → increased resistance → more...

• 2026-06-13

Main Causes of Terminal Overheating and Blackening 1. Unqualified Contact & Loose Installation Loose crimping, uneven torque and assembly gaps reduce the effective contact area of terminals. Based on the I²R heating principle, local high resistance generates intense heat, scorching metal surfaces and forming permanent black carbonized marks. Excessive crimping also causes micro-cracks and...

• 2026-06-18

  Common Stator & Rotor Core Defects The most frequent manufacturing defects for silicon steel motor cores include lamination edge burrs, inter-lamination short circuits, loose stacking and delamination, excessive core iron loss, dimensional tolerance errors, rotor die-casting faults and surface corrosion. All these issues result from improper process operation and insufficient quality co...

• 2026-06-22

Why Terminal Precision Matters for Motors Even tiny flaws in terminals create big problems:   Energy loss: Poor fit increases contact resistance, raising heat and lowering efficiency.   Connection failure: Vibration or thermal cycling causes loose contacts, leading to motor shutdowns.   Safety risks: Overheating from unstable connections can trigger short circuits.   Micro prec...

• 2026-06-27

  What Are Car Wiring Terminals They are precision-stamped metal parts crimped or soldered to wire ends, fitting into connector housings. Unlike generic terminals, automotive-grade versions must withstand extreme temperatures, vibration, moisture, and corrosion to meet SAE and ISO standards.     Common Types Crimp terminals: Fast, reliable for mass production.   Blade/quick-con...