Insulator spindle is the core connection component of the insulator string assembly in the power transmission system. It is used to fix and support the insulator to ensure its stable operation under high voltage environment. The insulator spindle produced by Handan Jinmai Fastener Manufacturing Co., Ltd. is made of high-strength alloy steel material, combined with precision processing technology, with good mechanical properties and anti-fatigue characteristics. It can be widely used in power transmission and transformation lines, substations, railway contact networks and other scenes, providing safe and reliable connection guarantee for power equipment.
1. High-strength material
Select high-quality 40CrMo alloy steel, after modulated heat treatment, tensile strength ≥1000MPa, impact resistance, deformation resistance, adapt to extreme climate and heavy load environment.
2. Precision structural design
The surface adopts thread rolling process to ensure thread accuracy and finish, high matching degree with insulator, convenient installation and excellent anti-loosening performance.
3. Corrosion-resistant treatment
Optional galvanizing, Dacromet or hot-dip galvanizing surface treatment process, greatly improves rust resistance, extends service life, and meets the harsh environmental requirements such as coastal areas and industrial pollution areas.
4. Diversified specification adaptation
Support customized production, provide a variety of thread specifications from M12 to M36, length range 50mm to 500mm, adapt to mainstream insulation models at home and abroad.
Handan Jinmai adopts full-process standardized production to ensure product quality:
1. Material selection: The raw material composition is tested by a spectrometer to ensure that the alloy steel meets ASTM standards.
2. Precision forging: CNC forging equipment is used to form, eliminate internal pores, and improve material density.
3. Heat treatment strengthening: Through quenching + tempering process, the metallographic structure is optimized to balance strength and toughness.
4. CNC turning: High-precision CNC lathe processes threads with a tolerance of ±0.02mm.
Material: 40CrMo alloy steel (in accordance with GB/T 3077 standard)
Tensile strength: ≥1000 MPa
Surface hardness: HRC 28-32
Thread standard: ISO 898-1 Class 8.8 or customized requirements
Corrosion resistance: zinc coating thickness ≥12μm, Dacromet coating salt spray resistance ≥1000 hours
Working temperature range: -40℃ to +120℃
Applicable standards: IEC 60120, GB/T 775.3
Conclusion：
As a professional manufacturer in the field of power fasteners, Handan Jinmai Fastener Manufacturing Co., Ltd. has always taken technological innovation and quality assurance as its core to provide customers with high-performance insulator mandrel solutions. Our products have passed ISO 9001 quality management system certification and strictly follow the International Electrotechnical Commission (IEC) standards. They are traceable from raw materials to finished products.
With more than ten years of industry experience, Handan Jinmai has provided supporting services for power engineering and railway infrastructure projects in more than 30 countries around the world. We not only provide standardized products, but also customize special sizes, coatings or material solutions according to customer needs to help customers improve equipment safety and operation and maintenance efficiency.
Choose Handan Jinmai, choose reliable connection!
For technical consultation or samples, please contact our international business team, we will serve you wholeheartedly.
We have recommended some of our Related products to you. I hope you will be interested.
