Zirconia Ball with Low Thermal Expansion Coefficient for Grinding Precision Ceramic Components

2025-10-27

在精密陶瓷制造领域,从电子陶瓷基板到航空航天结构件,对部件尺寸精度、表面光洁度及力学性能的要求日益严苛,而研磨作为关键工序,对填料的稳定性和效率提出了特殊挑战。传统研磨介质常因热膨胀系数过高、耐磨性不足等问题,导致研磨过程中部件热应力开裂或研磨效率低下。低膨胀氧化锆球作为新型化工填料,凭借其独特的材料特性,成为解决精密陶瓷研磨痛点的理想选择,在提升加工质量与生产效率方面展现出显著优势。



低膨胀氧化锆球的性能优势

低膨胀氧化锆球的核心优势在于其极低的热膨胀系数(通常≤6.5×10^-6/℃),相比传统氧化铝球(约8×10^-6/℃)和普通氧化锆球(约7.5×10^-6/℃),能在研磨过程中有效减少因温度波动产生的热应力。当研磨环境温度变化时,该填料体积变化率更低,可避免因热胀冷缩导致的研磨介质与陶瓷部件间的应力冲击,从而减少研磨过程中部件表面微裂纹的产生,提升成品合格率。同时,其高硬度(HRA≥85)和优异的化学稳定性,确保长期研磨过程中自身磨损小,可维持稳定的研磨效率长达数百小时。

在精密陶瓷研磨中的应用价值

在精密陶瓷研磨场景中,低膨胀氧化锆球通过优化研磨介质与物料的接触效率,显著提升加工质量。其球形度(≥0.98)和表面光洁度(Ra≤0.02μm)可减少对陶瓷部件表面的划伤,使成品表面粗糙度控制在Ra0.1μm以下,满足半导体封装基板、生物陶瓷人工关节等高要求场景。此外,在纳米级研磨中,该填料可通过规则的球径分布(如0.1-5mm梯度级配),实现对陶瓷浆料的均匀分散,提升浆料的致密度和流动性,为后续烧结提供稳定的坯体质量。某电子陶瓷企业应用数据显示

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