Application of fiber-reinforced composites in lead die casting

Although the application of fiber-reinforced composites in the field of lead die casting is relatively small, its potential is huge, especially in situations where high strength, high modulus and lightweight design are required. The preparation process of fiber-reinforced lead-based composites is a complex and delicate process that combines knowledge and technology from multiple fields such as materials science, mechanical engineering and chemical engineering.
Fiber selection and pretreatment
Choosing the right fiber type is the key. Carbon fiber, glass fiber, etc. are widely considered due to their high strength and high modulus characteristics. Parameters such as fiber diameter, length, and surface morphology directly affect the performance of the composite material. After the fiber is selected, pretreatment such as surface cleaning and coupling agent treatment is usually required to enhance the interfacial bonding between the fiber and the lead matrix.
Fiber preform preparation
Fiber preform is the basis for the preparation of composite materials, and its structure determines the performance of the final composite material. The preform can be made by weaving, knitting, lamination, etc. to form a two-dimensional or three-dimensional fiber network structure. The design of the preform needs to consider factors such as the arrangement direction, density, and porosity of the fiber to optimize the mechanical properties of the composite material.
Lead matrix material preparation
The selection and preparation of lead matrix materials are equally important. According to the application requirements, select the appropriate lead alloy formula and adjust its properties such as melting point and fluidity. During the preparation process, the smelting temperature and time of the lead alloy need to be strictly controlled to avoid the introduction of impurities and gases while ensuring the uniformity of the alloy composition.