In the grand landscape of industrial manufacturing, every precision component plays an indispensable role, and the DIN6796 Disc Spring Washer is undoubtedly a shining pearl. This innovative product, originating from France in the late 19th century, was meticulously designed by the visionary French engineer Julien Belleville to address the critical issue of spontaneous bolt loosening in mechanical systems. After years of refinement, it has now become a standard for ensuring bolt connection safety in the global industrial sector.
Jiangsu Sunzo Spring Technology Co., Ltd., a mixed-ownership enterprise with shares held by China National Nuclear Corporation, has a renowned reputation in the field of elastic component manufacturing. The company's R & D center is located in Nanjing, Jiangsu, and its production base is in Sihong, Jiangsu. With strong technical strength and excellent product quality, it has become a preferred partner for many industry benchmark enterprises. Jiangsu Sunzo specializes in the R & D, production, and sales of high-quality elastic components such as disc springs, disc spring washers, and wave springs. Its products are widely used in numerous fields including nuclear power, aviation, aerospace, military industry, hydrogen energy, ultra-high voltage, automobiles, wind power, ships, construction bridges, petrochemicals, engineering machinery, and metallurgy.
Jiangsu Sunzo has participated in the formulation of international ISO disc spring standards and national standards. It has a professional product R & D team and a modern testing center. The company has successively passed ISO 9001, IATF 16949, ISO14001, ISO45001 and other quality management system certifications, and has now obtained more than 70 patents. It has a complete industrial chain from raw materials to special equipment and product manufacturing. The company is equipped with advanced production equipment such as vacuum heat treatment furnaces, laser cutting machines, CNC lathes, metallographic microscopes, salt spray testing machines, spring-specific force measuring machines, and electronic tension and compression testing machines, ensuring high precision and reliability of elastic components, and its technical strength is leading in the industry.
The DIN6796 Disc Spring Washer produced by Jiangsu Sunzo strictly adheres to the DIN6796 standard. After a series of rigorous tests, it ensures consistent dimensional accuracy, high-quality material composition (usually high-grade spring steel or stainless steel), and predictable performance indicators, enabling seamless integration with ISO and DIN standard bolts and screws. The unique frustoconical disc geometry of the washer allows it to exert a sustained preload force through elastic deformation, creating a mechanical buffer that absorbs vibrational energy, compensates for thermal expansion/contraction, and resists cyclic loading - all common causes of connection failure.
Unlike conventional flat washers, the DIN6796 Disc Spring Washer has non-linear load-deflection characteristics. Even under extreme conditions, the clamping force remains stable, preventing micro-loosening that could escalate into catastrophic system failure. Its working principle is that when assembled with bolt and nut connections, it deforms under axial load, storing axial tension potential energy. When the nut or bolt loosens, the washer rebounds and releases the potential energy to prevent loosening, effectively eliminating the adverse effects of bolt and nut loosening during assembly, thereby achieving a locking effect.
In terms of material selection, Jiangsu Sunzo's DIN6796 Disc Spring Washer offers a variety of options. For normal operating conditions, spring steel and other materials are used, allowing a maximum operating temperature of no more than 250°C; in corrosive environments, stainless steel and other materials are used, with a temperature resistance of up to 300°C; for high-temperature operating conditions, Inconel 718 or alloys are used, with a maximum applicable temperature of 800°C. Surface treatment technologies include galvanizing, etc., to enhance corrosion resistance.
The DIN6796 Disc Spring Washer is suitable for a variety of heavy-duty applications, such as wind turbine nacelles, automotive powertrains, industrial presses, and railway bogies. In wind turbine nacelles, it can effectively withstand the vibration and impact caused by wind force, ensuring the stability of bolt connections and reducing equipment failures and downtime caused by bolt loosening; in automotive powertrains, it can compensate for the thermal expansion and contraction generated during engine operation, ensuring a tight connection between various components and improving the performance and reliability of the vehicle.
Jiangsu Sunzo always adheres to a customer-oriented approach and is dedicated to providing customers with the best elastic technology solutions. The company has an experienced and highly skilled service team that can provide customers with comprehensive technical support and after-sales service. Whether it is product selection, design optimization, or on-site installation guidance, the professionals at Jiangsu Sunzo can provide customers with professional and efficient services.
With excellent product quality, strong technical strength, and high-quality service, Jiangsu Sunzo's DIN6796 Disc Spring Washer has won the trust of various high-end customers at home and abroad. In future development, Jiangsu Sunzo will continue to uphold the philosophy of "innovation, quality, service", continuously enhance its core competitiveness, and provide more high-quality elastic component products and solutions for the global industrial sector.
