等静压成型素坯与釉面针孔的形成

RESEARCH ON THE NEEDLE HoLE OF GLAZE SURFACE OF DOMESTIC FINE PORCELAIN BY ISOSTATIC PRESSING

利用体视显微机和偏光显微镜对釉层显微结构进行观察，并做了性能测试，结合等静压成形以及生产实际，对釉面针孔的成因进行了讨论。通过分析对比．得出高气孔率的素坯是影响釉面针孔的重要因素；在进一步的试验中，提出了克服釉面针孔的合理途径并取得了一定成效。

The microstructure between body and glaze are studied by steromicroscope and Polarizing microscope in this paper and some properties are tested. The combination of isostatic pressing exchnology with the facts of production,mechanism of forming needle hole on glaze surface is toplored. Through analysis, high porosity in biscuit they formed by isostatic pressing is an important factor which resulted in needle hole on glaze surface. Ways of impmeing the quality of glaze and reducing the needle hole are found in further experiments.