Launched by China's leading carbon fiber composite material technology pioneer JSHR Carbon Fiber Technology Group, a new generation of glass-reinforced material leaf springs jointly developed by a number of internationally outstanding companies on the composites industry chain are unveiled at the 2019 K show in Dusseldorf, Germany. KraussMaffei booth. The weight of the glass fiber leaf spring is 60% lighter than that of the traditional metal leaf spring. It can also be reinforced by targeted localization, has high corrosion resistance, and further increases the added value of the product.
This joint development of leaf spring products can be said to be a best practice for the overall coordination of the upstream and downstream of the composite material industry to maximize the technical advantages of all parties. The parts use HP-RTM (High Pressure Resin Transfer Molding) process to make high glass fiber leaf spring products. The improved permeability of the resin through the design of the fabric allows it to penetrate into multiple plies of the preform. JSHR Group is in charge of the design and development of leaf springs with a professional composite engineering design company Engenuity from the United Kingdom. Huntsman provided a matrix system made of epoxy resin. Johns Manville ) Provide glass fiber, Schmidt & Heinzmann (Schmidt & Heinzmann) made preforms, Chomarat made fabrics, composite mold expert Alpex (Alpine) specially designed to adapt to HP-RTM process For product molds, Hufschmied (Bobingen, Germany) is responsible for post-mold processing of the parts through milling, and KraussMaffei is responsible for specific project management and component final molding. JSHR, as a Tier 1 supplier of composite materials and components for the automotive industry, will use it as a key product for vigorous promotion and promotion in the subsequent market development process.
Composite leaf springs have many characteristics such as light weight, large elastic strain, long fatigue life and good safety fracture. According to test data, the service life of composite leaf springs is 5 times that of traditional alloy steel leaf springs, and its re-brightness is less than half of that of traditional leaf springs. At present, there are well-known mature OEMs in the world that have mass-produced models for loading Case. In contrast, the domestic use of this product is still at a relatively early stage of exploration. With this pre-research project, the joint development subject established an important theoretical and practical basis for mass production, including material parameters, design parameters, and process paths. In the stagnant environment of the automobile market, perhaps this type of product can provide different OEMs with surprisingly different ideas for winning in the severe competition of safety and performance.