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发明授权
CN106747458B 制作碳化硅陶瓷微珠的生产工艺 有权

制作碳化硅陶瓷微珠的生产工艺
摘要：
本发明涉及一种制作碳化硅陶瓷微珠的生产工艺，属于粉体研磨领域。陶瓷原料的制备按照质量百分比，由如下组分组成：α‑SiC粉75%‑90%,SiO２3%‑7%,Al2O35%‑7%，TiN0.1%‑3%，酚醛树脂0.5%‑1%，HT树脂0.4%‑5%，油酸0.1%‑1%,B4C0.9%‑1%；在同一个转盘中将粘合剂PVA注入陶瓷原料，利用粘合剂PVA在介质中成球并固化，直接成型致密的粒径在0.1—2mm的坯珠；对填入海绵中的坯珠进行冷等静压，时间2‑10分钟；将冷等静压后的坯珠置于脱胶炉中完成脱胶工序；真空高温烧结炉中，将所得坯珠置于坩埚中进行烧结，生产陶瓷微珠坯球；将所得陶瓷微珠坯球进行研磨和抛光生产陶瓷微珠。
摘要（英）：

The invention relates to a production process of manufacturing silicon carbide ceramic microbeads and belongs to the field of powder grinding. Raw materials of the ceramic comprise the following components in percentage by weight: 75-90% of alpha-SiC powder, 3-7% of SiO2, 5-7% of Al2O3, 0.1-3% of TiN, 0.5-1% of phenolic resin, 0.4-5% of HT resin, 0.1-1% of oleic acid and 0.9-1% of B4C. The production process comprises the following steps: injecting the adhesive PVA into the ceramic raw materials in a same rotating disc, and balling and curing the adhesive PVA in the ceramic raw materials to directly form compact blank beads, the grain sizes of which are 0.1-2mm; performing isostatic cool pressing on the blank beads filling into sponge for 2-10 minutes; putting the blank beads after isostatic cool pressing in a degumming furnace to realize a degumming step; sintering the blank beads in a crucible in a vacuum high-temperature sintering furnace to produce ceramic microbead blank balls; and grinding and polishing the obtained ceramic microbead blank balls to produce the ceramic microbeads.

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