FDTG Special Steel completely independently developed a new type of spring steel with excellent comprehensive performance, which was successfully used in China National Heavy Duty Truck Co., Ltd. to produce variable cross-section leaf springs, and replaced the traditional leaf springs, making an important contribution to the lightweight development of automobiles.
In recent years, the country has severely regulated the overloading of automobiles, and increased the promotion of the upgrading of automobile emission standards. This has enabled major automakers to accelerate the process of lightweighting cars, and has prompted leaf spring manufacturers to increase the design stress of leaf springs and switch with high intensity Spring steel material with excellent plastic toughness and reliable durability. The company is aiming at this trend and material requirements, and determined research ideas from the perspective of optimized composition of ingredients, purity and quality control, refinement of grain size and improvement of plastic toughness, focusing on inhibiting the tendency of materials to decarburize. A series of research and development work such as testing, verification, optimization improvement, re-test verification, user trial, etc., finally successfully developed a high strength, good plasticity, excellent toughness, and good hardenability, decarburization and hot rolling hardness can fully meet users Demand for new spring steel. Once the new spring steel was launched, it won the favor of a well-known domestic company with excellent process performance, stable product quality, and reliable fatigue performance. It quickly upgraded the original material and applied it to a few leaf springs with increased design stress.
The introduction and application of this new spring steel has won the trust and praise of users, and has helped the automotive industry to switch from the national five standard to the national six standard, promoting the lightweight development of the automotive industry.