In high-pressure casting, hard materials such as quartz, feldspar, and alumina play a critical role in slip performance, green body strength, and final product quality. Hard materials are particularly important in high-pressure casting processes, as consolidation, dewatering, and drying stages all affect yield rate. Proper selection and control of hard materials are key to ensuring production stability and high product yield.
1. Enhancing Slip Fluidity and Casting Efficiency
The particle shape, size, and hardness of hard materials directly affect slip fluidity and mold filling ability. During high-pressure rapid casting, slip flow and filling efficiency rely on the characteristics of hard materials and the fundamental slip formulation. Uniform and appropriately hard particles allow the slip to flow smoothly into complex molds, reducing clogging and defects.
Benefits:
Improves casting efficiency
Ensures uniform mold filling, reducing voids and air pockets
2. Improving Green Body Strength and Firing Density
Hard materials form a stable skeleton structure in the slip, enhancing both dry and wet strength of the green body. During firing, they contribute to a dense structure, improving durability. Proper ratios of hard materials and fundamental slip formulation are the basis for rapid hardening and high-efficiency drying.
Benefits:
Increases resistance to cracking in green bodies
Enhances firing density and wear resistance of final products
3. Maintaining Dimensional Stability
Due to their physical and chemical stability, hard materials help control drying shrinkage and firing contraction, resulting in more consistent and stable product dimensions.
Benefits:
Reduces dimensional deviation
Maintains product uniformity and interchangeability
4. Supporting Long-Term Production Stability
High-quality hard materials reduce slip performance fluctuations and product defects, minimizing production interruptions and ensuring stable operation of high-pressure casting lines.
Benefits:
Lowers scrap rates
Improves overall production efficiency
Hard materials are an essential component of high-pressure casting. Proper selection and management not only optimize slip performance and improve green body strength and firing density, but also ensure high yield in consolidation, dewatering, and drying stages, as well as long-term production stability. The fundamental slip formulation is the basis for achieving high-pressure rapid casting, efficient hardening, and drying.