English Views: 336 Author: Site Editor Publish Time: 2025-09-19 Origin: Site
Jiangsu Sunzo Spring Elastic Technology Co., Ltd. (hereinafter referred to as "Sunzo Spring Elastic") has consistently focused on the R&D and innovation of ultra-high-performance materials, achieving continuous technological breakthroughs in key material fields such as spring steel, high-temperature alloys, and stainless steel. This article will take you deep into Sunzo Spring Elastic's core capabilities in material R&D, its development process, and successful case studies.
The company has a professional team composed of 3 PhD and 1 master in materials science. The core members have both university research and enterprise research and development background. They have been committed to the forefront research and industrialization of ultra-high performance materials for a long time, with solid theoretical foundation and achievement transformation ability.
Through a university-industry collaborative R&D platform, Sunzo Spring has equipped itself with cutting-edge analytical instruments including metallographic microscopes, scanning electron microscopes (SEM), tensile testing machines, creep testing machines, spectrometers, hardness testers, fatigue testing machines, and salt spray testers. The company has also established a pilot production facility to accelerate the transition of R&D achievements from lab benches to industrial-scale manufacturing.
We have established in-depth cooperation with many universities and enterprises such as University of Science and Technology Beijing, Nanjing University of Technology, Harbin Institute of Technology, Suqian College, Nanjing Iron and Steel Co., LTD., etc., integrating high-quality resources of industry, education and research, and jointly promoting the innovation and implementation of material technology.
Adhere to the industrialization thinking to promote material research and development, integrate the upstream and downstream industry chain, realize the whole process of laboratory research, pilot test, pilot test to large-scale production and market application, effectively promote the industrial application of technological achievements.
Sunzo Spring Elastic has established a systematic material research and development process and preliminary test process, covering composition design, process formulation, performance testing and production application, etc., to ensure that each stage is scientific, rigorous and controllable.
R& D process
Initial test procedure:
Figure SEM photo of ultra-high strength spring steel
Through systematic optimization of chemical composition, smelting, rolling, and heat treatment processes, Sunzo Spring Elastic successfully developed ultra-high-strength spring steel with tensile strength reaching 2.2 GPa. This material enables springs to achieve a 30% weight reduction while increasing fatigue life by 11 times, fully meeting the service cycle requirements of 2 million cycles.
Specific research contents include:
Explore the mechanism of strengthening elements such as V, Nb and Ti, and determine the optimal composition ratio;
Determine the phase transition point and phase transition curve, and make a scientific rolling and heat treatment process;
The fatigue life and elastic reduction performance were studied systematically, the S-N curve was drawn, and the critical size of inclusions was determined to provide guidance for the smelting process;
Complete the test and verification of fatigue life and elastic reduction performance.
Sunzo Spring Elasticity will continue to focus on the cutting-edge research and development of ultra-high performance materials, with innovation-driven development, to provide strong material support for high-end manufacturing.
