Showcase Some of Our Most Successful Project Cases

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In the rail transit industry, disc springs are widely used in brake and braking systems as key elastic elements. The service process of disc springs is often accompanied by a harsh and complex environment, which leads to the occurrence of disc spring stress relaxation, high temperature creep and corrosion. It is necessary to improve performance by optimizing material selection, heat treatment process and design to ensure long-term and stable operation of the equipment.

Sunzo spring optimizes the material heat treatment process and surface treatment process. After the 180-hour 5%NaCl neutral salt spray test, there is no corrosion phenomenon in the disc spring, and the fatigue life can reach more than 1 million times.

SUNZO has it’s own researching and development team and test center, has participate in rule-making of the latest national industry standards and the international ISO standards for disc springs.